Handle rotating shaft structure of electronic door lock

Abstract

The utility model discloses a handle pivot structure of electronic door lock, aims at solving the problem of insufficient strength of mechanical counter lock structure and unstable action of clutch mechanism in prior art. The structure includes handle head, pivot, independent positioning sheet and clutch mechanism. The positioning sheet is independently arranged, and the limiting cooperation part on the positioning sheet is matched with the limiting part of the pivot to realize firm and reliable lifting counter lock. The clutch mechanism includes the pin driven by the driving part, and the limiting flange of the pin is arranged in the pin mounting cavity. The pin is selectively inserted or separated from the locking slot of the pivot to realize electronic clutch. The utility model discloses the design of high-strength counter lock bearing force structure and high-reliability clutch mechanism through separation, which significantly improves the durability, safety and action reliability of the door lock.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and more specifically, to a handle shaft structure for an electronic door lock. Background Technology

[0002] Electronic door locks have been widely used in homes and businesses due to their convenience and high security. Existing electronic door locks typically incorporate a clutch mechanism in the external handle structure to allow the handle to rotate freely when no electronic authorization is available, thus preventing unauthorized personnel from opening the lock by turning the handle. Additionally, for convenient locking after leaving the house, some locks also feature a deadbolt function by lifting the handle.

[0003] However, existing technologies have some shortcomings in achieving these functions. For example, the lift-up locking function typically relies on a limiting and bearing structure integrated inside the handle. Handle heads are often made of die-cast materials such as zinc alloy, which have limited inherent strength. Furthermore, their compact internal space results in a small contact area and weak structural strength for the limiting and bearing structure. Under prolonged use or when subjected to significant external forces, this can easily lead to deformation or damage, causing the locking function to fail. In addition, if the reciprocating motion of key moving parts in the clutch mechanism lacks stable and reliable guidance, it is prone to jamming or shaking after prolonged use, affecting the smoothness of the door lock's opening action and overall reliability.

[0004] Therefore, how to provide a handle shaft structure for an electronic door lock that combines a high-strength mechanical deadbolt structure and a high-reliability electronic clutch mechanism has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a handle shaft structure for an electronic door lock that has high structural strength and stable and reliable operation.

[0006] This utility model provides a handle shaft structure for an electronic door lock, comprising: The handle head has an open shaft mounting cavity and a pin mounting cavity located on the radial side of the shaft mounting cavity and communicating with it. The positioning plate is connected to the opening side of the shaft mounting cavity of the handle head. The positioning plate has a central hole and a limiting fit part set on the inner peripheral wall of the central hole. The rotating shaft includes a plug-in part and a limiting part. The plug-in part passes through the central hole and is rotatably disposed in the rotating shaft mounting cavity. The plug-in part is provided with a locking slot communicating with the pin mounting cavity. The limiting part is disposed on the outer periphery of the plug-in part and is limited to a limiting engagement part in the first rotation direction. Clutch mechanism, the clutch mechanism includes: A pin is positioned within the pin mounting cavity; the pin is axially movable so that one end inserts into a locking slot, thereby locking the handle head to the pivot. A drive component used to move the pin.

[0007] Optionally, the handle head is provided with a first pin channel and a second pin channel located on both sides of the pin mounting cavity along the pin moving direction; the positioning plate is provided with at least one protrusion corresponding to the first pin channel and the second pin channel, and at least one protrusion is inserted into its corresponding channel to form an interlocking structure that prevents relative rotation between the positioning plate and the handle head; wherein, the pin mounting cavity, the first pin channel and the second pin channel are all cavities with open top surfaces and interconnected with each other, jointly defining an opening, and the positioning plate covers the opening.

[0008] Optionally, a limiting flange is provided on the pin; after the protrusion is inserted into the first pin channel and / or the second pin channel, it together with the first pin channel and / or the second pin channel provides a closed guide track for the axial movement of the limiting flange.

[0009] Optionally, the positioning plate is made of stainless steel.

[0010] Optionally, at least one positioning post is also provided on the handle, and the positioning plate is provided with a positioning slot for the positioning post to be inserted.

[0011] Optionally, the limiting part and the insertion part of the rotating shaft are integrally formed.

[0012] Optionally, the insertion part of the shaft is a hollow structure; two locking slots are provided, and the two locking slots are opened radially along the insertion part, opposite to each other and communicating with each other, so that the pin can pass through.

[0013] Optionally, the structure also includes a fixed plate, a bearing fixed to the fixed plate, and a handle mounting ring; the handle head is rotatably disposed in the bearing, and the handle mounting ring is sleeved on the outer periphery of the handle head and fixed to the fixed plate.

[0014] Optionally, a limiting flange is provided on the pin; the clutch mechanism also includes an elastic element, which is elastically disposed between the inner wall of the pin mounting cavity and the limiting flange, for elastically biasing the pin to an initial position when the driving member is in a non-driving state, in which the pin disengages from the locking slot.

[0015] Optionally, the structure further includes an annular pressure plate and a clutch fixing cover plate; the annular pressure plate is sleeved on the rotating shaft and abuts against the outer surface of the positioning plate, and the clutch fixing cover plate is fixed to the handle and covers the outside of the annular pressure plate to press it against the positioning plate, thereby axially limiting the rotating shaft.

[0016] Based on the technical content disclosed in this utility model, the following beneficial effects are achieved: This invention separates the load-bearing structure of the lifting-lock function from the space- and material-constrained handle head by setting an independent positioning plate. This allows the load-bearing structure to use higher-strength materials and a more robust structural form, thereby significantly improving the reliability and resistance to violent damage of the mechanical locking function. Simultaneously, the clutch mechanism and positioning plate of this invention are compact and stably coordinated, ensuring the precision and smoothness of the electronic clutch operation. Ultimately, this results in a handle shaft structure for an electronic door lock that is structurally strong, reliable in operation, and balances electronic and mechanical safety.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a front structural diagram of an embodiment of the present utility model; Figure 3 For along Figure 2 Schematic diagram of the cross-sectional structure of line AA in the middle; Figure 4 This is an exploded view of the first-person perspective structure of an embodiment of the present utility model. Figure 5 This is an exploded view of the second-perspective structure of an embodiment of the present utility model; Figure 6 This is a front view of the "pin locked" state according to an embodiment of the present utility model; Figure 7 For along Figure 6 Schematic diagram of the cross-sectional structure of the middle BB line; Figure 8 This is a three-dimensional schematic diagram of the "press-down unlock" state according to an embodiment of the present utility model; Figure 9 This is a three-dimensional schematic diagram of the "lift-up locking" state according to an embodiment of the present utility model; Figure 10 This is a three-dimensional schematic diagram of the "downward idling" state of an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Handle; 2. Handle head; 201. Pin mounting cavity; 202. First pin channel; 203. Second pin channel; 204. Positioning pin; 205. Screw hole pin; 206. Rotary shaft mounting cavity; 3. Fixing plate; 4. Lifting motor; 401. Lifting plate; 5. Pin; 501. Limiting flange; 6. Elastic element; 7. Handle mounting ring; 8. Bearing; 9. Rotary shaft; 901. Annular pressure plate; 902. Limiting part; 903. Locking slot; 904. Indicator mark; 905. Insertion part; 10. Positioning piece; 1001. First limiting protrusion; 1002. Second limiting protrusion; 1003. Limiting mating part; 1004. Positioning slot; 1005. Screw hole; 1006. Center hole; 11. Clutch fixing cover plate. Detailed Implementation

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0022] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0023] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0024] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0026] The core concept of this utility model embodiment is that by adding an independent positioning piece, the mechanical anti-locking force-bearing function, which has extremely high requirements for structural strength, is separated from the traditional handle head, which is limited by both materials and space. At the same time, through the ingenious cooperation between the positioning piece and the handle head, pins and other components, the high stability of the overall structure and the high reliability of the clutch action are achieved.

[0027] See Figures 1 to 10 The first aspect of this utility model discloses a handle shaft structure for an electronic door lock.

[0028] Reference Figure 1The structure mainly includes a handle 1 for the user to grip, and a lock body assembly that houses the core transmission mechanism. The lock body assembly is installed as a whole by a fixing plate 3, on which other components such as the handle mounting ring 7 and the lifting motor 4 are mounted.

[0029] Reference Figure 2 , Figure 3 and Figure 4 The core components inside the lock body assembly include a handle head 2 connected to the handle 1, a rotating shaft 9 rotatably inserted inside the handle head 2, a positioning plate 10 fixedly connected to the handle head 2 and surrounding the outer periphery of the rotating shaft 9, and a clutch mechanism driven by a drive component.

[0030] The front end of the handle head 2 is connected to the handle 1, forming a pivot mounting cavity 206 inside. The extension direction of the pivot mounting cavity 206 is the direction of the rotation axis of the handle head 2. As the core assembly space, the pivot mounting cavity 206 mainly functions to accommodate and provide a rotatable range of motion for the insertion part 905 of the pivot 9. The handle head 2 is also provided with a pin mounting cavity 201 located on one radial side (below in this embodiment) of the pivot mounting cavity 206 and communicating with it. Specifically, on both sides of the pin mounting cavity 201 along the moving direction of the pin 5, a first pin channel 202 and a second pin channel 203 communicating with the pin mounting cavity 201 are respectively provided. The first pin channel 202 connects the pin mounting cavity 201 and the pivot mounting cavity 206. In the moving direction of the pin, the pivot mounting cavity 206, the first pin channel 202, the pin mounting cavity 201 and the second pin channel 203 are connected in sequence. Structurally, the pin mounting cavity 201, the first pin channel 202, and the second pin channel 203 are all U-shaped openings with open top surfaces. (Refer to...) Figure 3 To ensure that the handle head 2 can rotate smoothly, it is installed on the fixed plate 3 through a stable and reliable rotation support system. Specifically, the bearing 8 is fixedly connected to the fixed plate 3, and the handle head 2 is rotatably set inside the bearing 8; the handle mounting ring 7 is fitted around the outer circumference of the handle head 2 and pressed against the bearing 8. The mounting ring 7 is fixedly connected to the fixed plate 3 by screws, thus forming a stable and reliable rotation support system.

[0031] The rotating shaft 9 is the core transmission component that realizes the unlocking and locking actions; its end is used to connect to the bolt mechanism of the door lock (not shown in the figure). (Refer to...) Figure 4 and Figure 5The rotating shaft 9 includes a connector 905 and a limiting part 902. The limiting part 902 protrudes from the outer peripheral surface of the connector 905 in an integrally formed manner. This integral structure ensures sufficient structural strength and torsional resistance when it contacts the limiting mating part 1003 on the positioning piece 10 to transmit the upward locking torque. Specifically, the connector 905 is a hollow structure with two locking slots 903 radially formed on it. These two locking slots 903 are arranged opposite each other, and their central axes are on the same straight line and are interconnected. This arrangement is designed to ensure that the pin 5 can smoothly pass through the entire connector 905 to form a stable shear lock. In addition, each locking slot 903 is radially connected to the hollow part of the connector 905. When the insertion portion 905 of the rotating shaft 9 is assembled into the rotating shaft mounting cavity 206 of the handle head 2, since the pin mounting cavity 201 and the rotating shaft mounting cavity 206 are interconnected, the through hole formed by the locking slot 903 on the rotating shaft 9, the hollow structure, and the locking slot 903 on the other side can communicate with the opening structure formed by the first pin channel 202, the pin mounting cavity 201, and the second pin channel 203 on the handle head 2, thereby creating the necessary structural conditions for the insertion and locking of the pin 5. An indicator mark 904 for indicating the correct installation direction during production assembly can also be provided on the end face of the rotating shaft 9. This indicator mark 904 can be implemented in a variety of ways well known to those skilled in the art, such as by steel stamping, laser engraving, screen printing, or adhesive labeling to form a clearly identifiable mark. The presence of this mark provides assemblers with a clear visual reference, ensuring that the angular position of the pivot 9 relative to the handle 2 and other related components is accurate during initial installation. This effectively avoids installation failures or functional abnormalities caused by reverse installation or misalignment, significantly improving assembly efficiency and first-pass yield in mass production.

[0032] The positioning plate 10 is a key component in this invention for achieving high-strength locking and highly stable connection. It is connected to the handle head 2. To ensure its load-bearing capacity, the positioning plate 10 is preferably made of high-strength metal materials such as stainless steel. (Refer to...) Figure 4 and Figure 5 The positioning plate 10 has a central hole 1006 for the rotating shaft 9 to pass through, and the limiting fitting part 1003 for realizing the lifting and locking function is integrally formed on the inner peripheral wall of the central hole 1006.

[0033] The clutch mechanism is used to control whether the handle 1 can effectively drive the rotating shaft 9 according to electronic commands. (Refer to...) Figure 3 and Figure 4The mechanism mainly includes an axially movable pin 5, an elastic element 6 for providing a reset force, and a driving element for moving the pin 5. In this embodiment, the driving element can specifically be a lifting plate 401, which is driven by a lifting motor 4. The pin 5 has a radially protruding limiting flange 501. The pin 5 and the elastic element 6 are installed in the pin mounting cavity 201 of the handle head 2. In this embodiment, the elastic element 6 can specifically be a spring. One end of the elastic element 6 abuts against the limiting flange 501, and the other end abuts against the inner wall of the pin mounting cavity 201. When the driving element is in the initial position of the non-driven state, under the elastic action of the elastic element 6, the pin 5 is biased to the position of disengaging from the locking slot 903. At this time, the locking slot 903 on the rotating shaft 9 is located on the extension line of the axial movement path of the pin 5, preparing for subsequent insertion and engagement. When the drive unit is working, for example, when the lifting plate 401 moves under the drive of the lifting motor 4, it can push the pin 5 to overcome the elastic force of the elastic element 6 and move until its end passes through the interface between the pin mounting cavity 201 and the shaft mounting cavity 206 and is fully inserted into the locking slot 903 of the shaft 9. In this locked position, the pin 5 acts like a shear pin, with its shaft simultaneously inserted into the integrated structure of the handle head 2 and the locking slot 903 of the shaft 9, thereby rigidly locking the handle head 2 and the shaft 9 together in the rotational direction, so that the rotation of the handle head 2 can be transmitted to the shaft 9 without damage.

[0034] Another ingenious aspect of this embodiment lies in the composite assembly structure between the handle 2 and the positioning piece 10. (Refer to...) Figure 4 and Figure 5The insertion part 905 of the rotating shaft 9 passes through the central hole 1006 of the positioning plate 10 and then inserts into the rotating shaft mounting cavity 206 of the handle head 2. The handle head 2 is provided with two integrally formed positioning posts 204, and the corresponding positions on the positioning plate 10 are provided with positioning slots 1004. During assembly, the positioning posts 204 are inserted into the positioning slots 1004, achieving rapid and precise radial alignment and effectively sharing shear force. To further enhance connection stability, the positioning plate 10 is also integrally formed with a first limiting protrusion 1001 and a second limiting protrusion 1002. During assembly, the first limiting protrusion (1001) is embedded in the second pin channel (203), and the second limiting protrusion (1002) is embedded in the first pin channel, forming a strong interlock and effectively preventing relative rotation between the positioning plate 10 and the handle head 2. The first pin channel 202 and the second pin channel 203 are located on both sides of the pin mounting cavity 201 along the direction of pin 5 movement. The pin mounting cavity 201, the first pin channel 202, and the second pin channel 203 are all open at the top and interconnected, thus defining an opening covered by the positioning plate 10. After the positioning plate 10 is connected to the handle head 2, its plate body covers this opening, acting as a cover. Finally, the axial fastening is completed by passing a screw through the screw hole 1005 of the positioning plate 10 and locking it into the screw hole 205 of the handle head 2. Furthermore, if the pin 5 or the elastic element 6 is damaged, the positioning plate 10 can be removed, and the pin 5 or the elastic element 6 can be taken out of the pin mounting cavity 201 for replacement, reducing maintenance costs.

[0035] Most importantly, when the positioning plate 10 is assembled with the handle head 2, the inner walls of the first limiting protrusion 1001 and the second limiting protrusion 1002, together with the inner walls of the first pin channel 202 and the second pin channel 203, form a circumferentially enclosed and precise guide track for the limiting flange 501 of the pin 5. This ensures that the path of the pin 5 remains straight and stable during lifting and lowering movements, without wobbling, deflection, or jamming, thereby greatly improving the reliability of the clutch operation.

[0036] In addition, refer to Figure 3 and Figure 7This structure also includes an annular pressure plate 901 for axial positioning and a clutch fixing cover 11 for sealing and protection. Specifically, the annular pressure plate 901 is sleeved on the outer periphery of the middle part of the rotating shaft 9, with one side surface abutting against the outer surface of the positioning plate 10. The clutch fixing cover 11 covers the outside of the positioning plate 10 and is fixed to the handle head 2 with screws, with its inner surface pressing against the other side surface of the annular pressure plate 901. In this way, the annular pressure plate 901 is stably clamped between the positioning plate 10 and the clutch fixing cover 11, thereby applying reliable axial positioning to the rotating shaft 9 and preventing it from moving. At the same time, the clutch fixing cover 11 also provides effective sealing and protection for the internal clutch mechanism.

[0037] Combined with appendix Figures 8 to 10 The workflow of this structure is as follows: See Figure 10 Unauthorized free-spinning state: The drive component is in a non-drive state. Under the action of the elastic element 6, the pin 5 is in the lower disengaged position, and its end is not inserted into the locking slot 903 of the rotating shaft 9. At this time, pressing down the handle 1 in the second rotation direction causes the handle head 2 to spin freely relative to the rotating shaft 9, making it impossible to unlock.

[0038] See Figure 8 Authorized unlocking state: After system verification, the drive unit operates, pushing pin 5 upwards until its end passes through the interface between pin mounting cavity 201 and shaft mounting cavity 206, and is fully inserted into the locking slot 903 of shaft 9. At this time, pin 5, like a shear pin, is simultaneously inserted into handle head 2 and shaft 9, rigidly locking the two together. Then, pressing handle 1 downwards in the second rotation direction allows the rotation of handle head 2 to be fully transmitted to shaft 9, thereby completing the unlocking.

[0039] See Figure 9 In the reverse-lock state: When the user lifts handle 1 outdoors, the handle head 2 rotates in the first rotation direction. The lifting torque is transmitted through a purely mechanical transmission between the limiting part 902 of the rotating shaft 9 and the limiting mating part 1003 of the positioning piece 10, which drives the rotating shaft 9 to rotate in the first rotation direction, thereby achieving reverse locking.

[0040] The first and second rotation directions are opposite to each other.

[0041] In summary, the handle shaft structure of the electronic door lock provided by this utility model ingeniously integrates the limiting structure that bears the upward locking torque with the transmission structure that realizes the electronic clutch. In particular, by using an independent, high-strength positioning plate 10 to bear the locking torque, and utilizing the cooperation structure between the positioning plate 10 and the handle head 2 to provide stable guidance for the clutch pin 5, it not only solves the problem of insufficient strength of the locking structure in the prior art, but also improves the operational reliability of the clutch mechanism. Furthermore, the positioning plate 10 and the handle head 2 are interlocked and positioned by the first limiting protrusion 1001, the second limiting protrusion 1002, and the positioning pin 204 and the corresponding groove, and finally locked by the screw in the screw hole 1005. This series of cooperation features work together to form a high-rigidity connection that can effectively resist the torsional force generated when the user operates the handle, ensuring the stability and accuracy of the entire handle shaft structure in long-term use, thereby significantly improving the overall durability, security, and operational reliability of the electronic door lock.

[0042] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A handle shaft structure for an electronic door lock, characterized in that, include: The handle head has an open shaft mounting cavity and a pin mounting cavity located on the radial side of the shaft mounting cavity and communicating with it. A positioning piece is connected to the opening side of the rotating shaft mounting cavity of the handle head. The positioning piece has a central hole and a limiting fitting part disposed on the inner peripheral wall of the central hole. A rotating shaft includes a plug-in portion and a limiting portion. The plug-in portion passes through the central hole and is rotatably disposed in the rotating shaft mounting cavity. A locking slot communicating with the pin mounting cavity is provided on the plug-in portion. The limiting portion is disposed on the outer periphery of the plug-in portion and is limitedly engaged with the limiting mating portion in a first rotation direction. Clutch mechanism, the clutch mechanism comprising: A pin is disposed in the pin mounting cavity, and the pin is axially movable so that one end of the pin is inserted into the locking slot to lock the handle head to the pivot. as well as A drive component for moving the pin.

2. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The handle head is provided with a first pin channel and a second pin channel located on both sides of the pin mounting cavity along the pin movement direction; the positioning plate is provided with at least one protrusion corresponding to the first pin channel and the second pin channel, and at least one of the protrusions is inserted into its corresponding channel to form an interlocking structure that prevents relative rotation between the positioning plate and the handle head; wherein, the pin mounting cavity, the first pin channel and the second pin channel are all cavities with open top surfaces and interconnected with each other, jointly defining an opening, and the positioning plate covers the opening.

3. The handle shaft structure of the electronic door lock according to claim 2, characterized in that: The pin is provided with a limiting flange; after the protrusion is inserted into the first pin channel and / or the second pin channel, it together with the first pin channel and / or the second pin channel provides a closed guide track for the axial movement of the limiting flange.

4. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The positioning plate is made of stainless steel.

5. The handle shaft structure of the electronic door lock according to claim 2, characterized in that: The handle head is also provided with at least one positioning post, and the positioning plate is provided with a positioning slot for the positioning post to be inserted.

6. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The limiting part of the rotating shaft and the insertion part are integrally formed.

7. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The insertion part of the rotating shaft has a hollow structure; there are two locking slots, which are radially opened along the insertion part, opposite to each other and interconnected, so that the pin can pass through.

8. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The structure also includes a fixing plate, a bearing fixed to the fixing plate, and a handle mounting ring; the handle head is rotatably disposed in the bearing, and the handle mounting ring is sleeved on the outer periphery of the handle head and fixed to the fixing plate.

9. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The pin is provided with a limiting flange; the clutch mechanism further includes an elastic element, which is elastically disposed between the inner wall of the pin mounting cavity and the limiting flange, for elastically biasing the pin to an initial position when the driving member is in a non-driving state, in which the pin disengages from the locking slot.

10. The handle shaft structure of the electronic door lock according to claim 1, characterized in that: The structure also includes an annular pressure plate and a clutch fixing cover plate; the annular pressure plate is sleeved on the rotating shaft and abuts against the outer surface of the positioning plate, and the clutch fixing cover plate is fixed to the handle head and covers the outside of the annular pressure plate to press it against the positioning plate, thereby axially limiting the rotating shaft.

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