A reset structure of a knob and a reset lock cylinder

Abstract

The application discloses a kind of to reset structure and to reset lock cylinder of head, including lock cylinder pivot, the lock shell of being set on lock cylinder pivot, the head of being axially connected to lock cylinder pivot, the side of head away from lock cylinder pivot is equipped with the angle adjusting member being fixed to lock shell, reset mechanism is equipped between head and angle adjusting member, reset mechanism is respectively with head and angle adjusting member cooperation to make head rotate after automatic reset, and reset mechanism has multiple selectable circumferential cooperation positions between angle adjusting member;Wherein, angle adjusting member circumferentially is equipped with multiple angle adjusting positions, the torsional elastic member of reset mechanism one end is clamped in the movable cavity of head, the other end is clamped on corresponding angle adjusting position, and the initial angle of head can be adjusted by selecting different angle adjusting position, to set the handle rotating angle required for unlocking according to consumer unlocking habit when installing.The application is simple in structure, convenient to adjust, reliable in reset, and can meet the personalized use demand.

Description

Technical Field

[0001] This invention relates to the field of lock technology, and more specifically to a dial reset structure and a dial reset lock cylinder including the dial reset structure. Background Technology

[0002] Door locks are frequently used security devices in daily life, and the ease of their operation directly affects the user experience. Lever locks (commonly known as handle locks) work by turning the handle, which drives a lever inside the lock cylinder to rotate. This lever then extends or retracts the bolt, thus locking or unlocking the door. Users need to turn the handle at a certain angle to unlock; the size of this angle determines the travel and feel of the unlocking operation.

[0003] However, different users have significantly different unlocking habits: some users are used to turning the handle by a small angle (such as about 15°) to unlock, while others are used to turning it by a larger angle (such as 30° or even 90°). Currently, locks on the market have their handle rotation angle fixed at the factory; that is, the required rotation angle for unlocking is preset during the manufacturing stage. Consumers can only passively accept this fixed angle after purchase and cannot adjust the rotation angle according to their own unlocking habits during installation. For users whose habits do not match the factory settings, they are forced to change their usage habits to adapt to the lock, or replace the entire lock to meet their needs. The former reduces ease of use, while the latter increases replacement costs and installation workload.

[0004] Further analysis reveals that the key to unlocking at different rotation angles lies in the initial angle of the dial: different initial angles require different rotation angles for the handle to unlock. Furthermore, after rotation, the handle typically needs an automatic reset mechanism to return to its original position for the user to operate again. However, in existing locks, the initial angle of the dial is fixed at the factory, and the mating positions in the dial reset mechanism are also fixed and unselectable. The reset mechanism is adapted to a fixed initial angle, preventing consumers from selecting or adjusting the initial angle according to their own habits during installation. Therefore, existing technology lacks a dial reset mechanism and dial reset lock cylinder that can adjust the initial angle of the dial according to the user's unlocking habits during installation and reliably and automatically reset after rotation. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing lock dials where the initial angle is fixed at the factory and cannot be adjusted according to the unlocking habits of consumers. This invention provides a dial reset structure and a dial reset lock cylinder that can adjust the initial angle of the dial according to the unlocking habits of consumers during installation, thereby satisfying the usage preferences of different consumers for the unlocking rotation angle. Moreover, the dial can automatically reset after rotation. The structure is simple and the adjustment is convenient.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dial reset structure includes a lock cylinder shaft 1 and a lock housing 2 sleeved on the lock cylinder shaft 1. A dial 3 is axially connected to the lock cylinder shaft 1. An angle adjustment member 4 is provided on the side of the dial 3 away from the lock cylinder shaft 1, and the angle adjustment member 4 is fixed to the lock housing 2. A reset mechanism 5 is provided between the dial 3 and the angle adjustment member 4. The reset mechanism 5 cooperates with the dial 3 and the angle adjustment member 4 respectively, so that the dial 3 automatically resets after rotation. Moreover, the reset mechanism 5 and the angle adjustment member 4 have multiple selectable circumferential cooperation positions. By selecting different circumferential cooperation positions, the initial angle of the dial 3 can be adjusted.

[0008] Furthermore, the reset mechanism 5 includes a movable cavity 6 disposed inside the dial head 3 and a torque elastic member 7 disposed inside the movable cavity 6. The angle adjusting member 4 is provided with multiple angle adjusting positions 8 in the circumferential direction. One end of the torque elastic member 7 is engaged in the movable cavity 6, and the other end is engaged in the corresponding angle adjusting position 8, so that the angle adjusting member 4 applies a reset torque to the dial head 3 through the torque elastic member 7.

[0009] Preferably, the movable cavity 6 is provided with a column 9, and the torsional elastic element 7 is sleeved on the column 9; the movable cavity 6 is provided with a snap-fit ​​part 10 on its side, and one end of the torsional elastic element 7 is snapped onto the snap-fit ​​part 10.

[0010] Preferably, the angle adjustment position 8 is a plurality of through holes 8 arranged circumferentially along the angle adjustment member 4; the other end of the torque elastic member 7 extends into one of the through holes 8, and a locking pin 11 is inserted into the through hole 8. The locking pin 11 passes through the through hole 8 and holds the other end of the torque elastic member 7 to realize the adjustment of the initial angle of the dial 3.

[0011] Preferably, it also includes a lock cylinder connecting rod 12, which connects and fixes the lock housing 2 and the angle adjusting member 4.

[0012] Preferably, the angle adjusting component 4 includes an adjusting disk 13 and a connecting ear 14 integral with the adjusting disk 13. The plurality of through holes 8 are arranged circumferentially on the adjusting disk 13, and the connecting ear 14 is connected and fixed to the lock cylinder connecting rod 12.

[0013] Preferably, an arc-shaped limiting block 15 is provided in the movable cavity 6. The arc-shaped limiting block 15 is used to limit the angle of rotation of the torsion elastic element 7 with the dial head 3, so as to limit the rotatable angle of the dial head 3.

[0014] Preferably, the torsion elastic element 7 is a torsion spring 7; the adjusting disk 13 has a convex disk 16 on the side facing the dial head 3, the convex disk 16 is placed in the movable cavity 6, and matches the movable cavity 6 and can rotate relative to it.

[0015] Preferably, the dial head 3 has multiple pull-limiting grooves 17 on the side facing the lock cylinder shaft 1, and the locking block 18 on the lock cylinder shaft 1 can extend and be engaged in the pull-limiting grooves 17 to drive the dial head 3 to rotate.

[0016] The present invention also provides a dial reset lock cylinder, including any of the dial reset structures described above, and further including a lock head 19, wherein the lock head 19 is connected to the lock cylinder rotating shaft 1 and drives the lock cylinder rotating shaft 1 to rotate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) The initial angle of the dial head is adjustable. By setting multiple selectable circumferential mating positions (multiple angle adjustment positions), installers can select different mating positions according to the consumer's unlocking habits during installation and adjust the initial angle of the dial head, such as 15°, 30° or even 90°, to meet personalized usage needs without replacing the lock.

[0019] (2) The adjustment operation is simple and convenient. The adjustment can be completed simply by inserting the other end of the torque elastic element into the target through hole and inserting the locking pin. The installation and adjustment are quick and the cost is low.

[0020] (3) Reliable reset and controllable rotation range. After the dial head rotates, it is automatically reset by applying reset torque through the torque elastic element; the rotation angle of the dial head is limited by the arc-shaped limit block to prevent over-rotation, and the structure is safe and stable;

[0021] (4) Compact structure. The overall structure has few parts and simple assembly relationship. It can be directly modified and assembled on the existing lock cylinder structure, and has good versatility. Attached Figure Description

[0022] Figure 1 This is one of the exploded perspective views of the present invention;

[0023] Figure 2 This is the second exploded perspective view of the present invention;

[0024] Figure 3 This is the front view of the present invention;

[0025] Figure 4 for Figure 3 AA cross-section view;

[0026] Figure 5 This is one of the perspective views of the present invention;

[0027] Figure 6 This is a second perspective view of the present invention. Detailed Implementation

[0028] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of protection of the present invention. Unless otherwise specified in the following embodiments, all conditions are performed according to conventional conditions in the art. The lever reset structure and lever reset lock cylinder of the present invention can be widely used in lever handle locks for entrance doors, interior doors, office doors, hotels, apartments, etc., and are especially suitable for consumers with different preferences for handle rotation angles. Installers can select the appropriate setting according to the consumer's usage habits during lock installation, completing the angle adjustment in one go, significantly improving the user experience.

[0029] like Figure 1-6 As shown, this embodiment provides a dial reset lock cylinder, including a lock cylinder shaft 1, a lock housing 2, a dial 3, an angle adjustment component 4, a reset mechanism 5, and a lock head 19.

[0030] like Figure 1 , 2 As shown in Figure 4, the lock housing 2 is sleeved on the lock cylinder shaft 1, and the lock cylinder shaft 1 can rotate relative to the lock housing 2 around its own axis. A dial 3 is axially connected to one end of the lock cylinder shaft 1, and a lock head 19 is connected to the other end of the lock cylinder shaft 1. The lock head 19 is used to drive the lock cylinder shaft 1 to rotate. The lock cylinder shaft 1 is provided with a lock block 18 that can extend or retract. The dial 3 has multiple pull-limiting grooves 17 on the side facing the lock cylinder shaft 1. When the lock block 18 extends and engages with the pull-limiting groove 17, the rotation of the lock cylinder shaft 1 drives the dial 3 to rotate synchronously via the lock block 18. When the lock block 18 retracts and disengages from the pull-limiting groove 17, the transmission between the lock cylinder shaft 1 and the dial 3 is disengaged. The extension and retraction of the lock block 18 are controlled by a locking mechanism within the lock head 19. This locking mechanism can adopt a conventional structure in the lock industry (such as a key-driven pin, a dial block, etc.), which will not be described in detail here.

[0031] like Figure 1-2 As shown, the dial 3 is provided with an angle adjustment component 4 on the side opposite to the lock cylinder shaft 1, and the angle adjustment component 4 is fixed to the lock housing 2; a reset mechanism 5 is provided between the dial 3 and the angle adjustment component 4, and the reset mechanism 5 cooperates with the dial 3 and the angle adjustment component 4 respectively, so that the dial 3 automatically resets after rotation, and the reset mechanism 5 and the angle adjustment component 4 have multiple selectable circumferential cooperation positions for adjusting the initial angle of the dial 3.

[0032] The reset mechanism 5 includes a movable cavity 6 located inside the dial head 3 and a torsion elastic element 7 located within the movable cavity 6. The movable cavity 6 is a circular recessed cavity formed inward from the side of the dial head 3 away from the lock cylinder shaft 1. A column 9 is located at the center of the movable cavity 6. The column 9 can be integrally formed with the dial head 3, or it can be processed separately and fixed within the movable cavity 6 by riveting, threaded connection, or other methods. In this embodiment, the torsion elastic element 7 is a torsion spring 7, which is sleeved on the column 9. A snap-fit ​​part 10 is provided on the side of the movable cavity 6. One end of the torsion spring 7 is bent to form a snap-fit ​​foot and snaps onto the snap-fit ​​part 10, so that one end of the torsion spring 7 maintains circumferential linkage with the dial head 3. An arc-shaped limiting block 15 is also provided inside the movable cavity 6. The arc-shaped limiting block 15 is located on the rotation path of the torsion spring 7 and is used to limit the angle of rotation of the torsion spring 7 with the dial head 3, thereby limiting the rotatable angle of the dial head 3 and preventing over-rotation. The arc-shaped limiting block 15 can be one or more blocks, and its central angle is set according to the required rotation angle range of the dial 3, for example, 30°~120°.

[0033] The angle adjustment component 4 includes an adjustment disc 13 and a connecting lug 14 integral with the adjustment disc 13. The adjustment disc 13 is disc-shaped with multiple through holes 8 evenly arranged circumferentially on its surface, forming angle adjustment positions. The connecting lug 14 is connected and fixed to the lock cylinder connecting rod 12, which connects and fixes the lock housing 2 and the angle adjustment component 4, keeping the angle adjustment component 4 stationary relative to the lock housing 2. A convex plate 16 is provided on the side of the adjustment disc 13 facing the dial head 3. The convex plate 16 is a circular boss, which is placed in the movable cavity 6, matches the movable cavity 6, and can rotate relative to it. On the one hand, it provides radial positioning for the dial head 3 and the adjustment disc 13, and on the other hand, it ensures that the dial head 3 rotates smoothly relative to the angle adjustment component 4. In addition, the angle adjustment positions 8 can be in other forms such as toothed grooves and locking teeth in addition to through holes 8 and grooves. Any structure that can realize multiple selectable circumferential mating positions between the other end of the torsional elastic element 7 and the angle adjustment component 4 is within the protection scope of this invention.

[0034] The other end of the torsion spring 7 is located in one of the through holes 8, and a locking pin 11 is inserted into the through hole 8. The locking pin 11 passes through the through hole 8 and holds the other end of the torsion spring 7, thus circumferentially locking the other end of the torsion spring 7 with the through hole 8. By selecting different through holes 8, that is, changing the circumferential engagement position between the other end of the torsion spring 7 and the angle adjustment component 4, the preload angle of the torsion spring 7 changes accordingly, and the initial angle of the dial head 3 also changes accordingly, thereby achieving the adjustment of the initial angle of the dial head 3. It should be noted that the initial angle and the rotatable angle of the dial head 3 are two independent angular parameters: the initial angle is determined by the position of the selected through hole 8 at the other end of the torsion spring 7, while the rotatable angle is limited by the arc-shaped limiting block 15 in the movable cavity 6. Due to the different initial angles of the dial head 3, the handle rotation angle required for the lock block 18 to engage with the limiting groove 17 and drive the dial head 3 to retract the lock tongue is correspondingly different, thus satisfying the usage preferences of different consumers for the unlocking rotation angle.

[0035] When unlocking, the user turns the handle, which drives the lock cylinder shaft 1 to rotate. The lock block 18 extends and engages with the limiting groove 17, causing the dial head 3 to rotate. The dial head 3 drives one end of the torsion spring 7 to rotate accordingly, while the other end of the torsion spring 7 is constrained by the locking pin 11 at the through hole 8. The torsion spring 7 then accumulates torque. The rotation of the dial head 3, through the conventional transmission structure of the lock, causes the bolt to retract, thus unlocking. After releasing the handle, the torsion spring 7 releases its torque, and through the locking part 10, it drives the dial head 3 to rotate in the opposite direction to automatically reset. The dial head 3 returns to the initial angle position determined by the selected through hole 8. The arc-shaped limiting block 15 limits the rotatable angle of the dial head 3 to prevent over-rotation. The locking pin 11 and the through hole 8 can be fitted with an interference fit or a threaded fit. The locking pin 11 can also be equipped with elastic locking feet to secure it in the through hole 8.

[0036] In this embodiment, eight through holes 8 are provided, evenly arranged along the circumference of the adjusting disc 13. The central angle between adjacent through holes 8 is 45°, and the diameter of each through hole 8 is 3mm. The locking pin 11 engages with the through holes 8. By selecting different through holes 8, different initial angles of the dial head, such as 15°, 30°, 45°, 60°, 75°, and 90°, can be achieved. The torsion spring 7 is made of 65Mn spring steel wire with a diameter of 1mm, consisting of three turns, with both ends bent to form locking feet. The dial head 3 and the adjusting disc 13 can be made of zinc alloy or engineering plastic. Of course, the above parameters are only examples. The number of through holes 8 can be set to 3 to 12 as needed, preferably 5 to 8, and the initial angle of the dial head can be set as needed within the range of 15° to 90°.

[0037] During assembly, first, the torsion spring 7 is fitted onto the column 9, and one end is inserted into the locking part 10; then, the convex plate 16 of the adjusting disc 13 is aligned with the movable cavity 6 and pressed in, so that the convex plate 16 is placed inside the movable cavity 6; subsequently, the connecting lug 14 is connected and fixed to the lock housing 2 through the lock cylinder connecting rod 12; finally, according to the consumer's unlocking habits, the gear is selected, the other end of the torsion spring 7 is inserted into the corresponding through hole 8 and fixed by inserting the locking pin 11, thus completing the assembly. When the consumer needs to change the initial angle of the dial, there is no need to replace the lock; simply pull out the locking pin 11, move the other end of the torsion spring 7 to another through hole 8, and then insert the locking pin 11 to fix it. The adjustment process is simple and quick.

[0038] Furthermore, the difference between Embodiment 2 and Embodiment 1 lies in the form of the angle adjustment position. The angle adjustment position 8 consists of multiple grooves arranged circumferentially along the adjustment disc 13. The other end of the torsion spring 7 is inserted into one of the grooves, and an elastic locking block can be provided to press the other end of the torsion spring 7 firmly into the groove to prevent it from coming out. During adjustment, the other end of the torsion spring 7 is pulled out of the current groove and inserted into another groove, thereby changing the initial angle of the dial head 3 and adjusting the initial angle setting of the dial head. The remaining structure is the same as in Embodiment 1, and will not be described again here.

[0039] Furthermore, the difference between Embodiment 3 and Embodiment 1 lies in the form of the torsion elastic element. The torsion elastic element 7 is a torsion spring, one end of which is fixed to the snap-fit ​​part 10 inside the movable cavity 6, and the other end is snapped into the corresponding angle adjustment position 8 (such as a through hole 8 or a groove). When the dial 3 rotates, the torsion spring elastically deforms and accumulates torque. After being released, the torque is released to drive the dial 3 to reset. Alternatively, two torsion springs 7 with opposite directions of rotation can be coaxially sleeved on the column 9 to provide a smoother reset torque. The remaining structure is the same as in Embodiment 1, and will not be described again here.

Claims

1. A dial reset structure, comprising a lock cylinder shaft (1) and a lock housing (2) sleeved on the lock cylinder shaft (1), wherein a dial (3) is axially connected to the lock cylinder shaft (1), characterized in that: The dial (3) is provided with an angle adjustment component (4) on the side opposite to the lock cylinder shaft (1), and the angle adjustment component (4) is fixed to the lock housing (2); a reset mechanism (5) is provided between the dial (3) and the angle adjustment component (4), and the reset mechanism (5) cooperates with the dial (3) and the angle adjustment component (4) respectively, so that the dial (3) automatically resets after rotation; and the reset mechanism (5) and the angle adjustment component (4) have multiple selectable circumferential cooperation positions to adjust the initial angle of the dial (3).

2. The dial reset structure according to claim 1, characterized in that: The reset mechanism (5) includes a movable cavity (6) located inside the dial (3) and a torque elastic element (7) located inside the movable cavity (6). The angle adjustment element (4) has multiple angle adjustment positions (8) circumferentially. One end of the torque elastic element (7) is engaged in the movable cavity (6), and the other end is engaged in the corresponding angle adjustment position (8), so that the angle adjustment element (4) applies a reset torque to the dial (3) through the torque elastic element (7).

3. The dial reset structure according to claim 2, characterized in that: The movable cavity (6) is provided with a column (9), and the torsional elastic element (7) is sleeved on the column (9); the movable cavity (6) is provided with a snap-fit ​​part (10) on its side, and one end of the torsional elastic element (7) is snapped on the snap-fit ​​part (10).

4. The dial reset structure according to claim 3, characterized in that: The angle adjustment position (8) consists of multiple through holes (8) arranged circumferentially along the angle adjustment member (4); the other end of the torque elastic member (7) extends into one of the through holes (8), and a locking pin (11) is inserted into the through hole (8). The locking pin (11) passes through the through hole (8) and holds the other end of the torque elastic member (7) to achieve the adjustment of the initial angle of the dial (3).

5. The dial reset structure according to claim 4, characterized in that: It also includes a lock cylinder connecting rod (12), which connects and fixes the lock shell (2) and the angle adjusting member (4).

6. The dial reset structure according to claim 5, characterized in that: The angle adjustment component (4) includes an adjustment disc (13) and a connecting ear (14) integral with the adjustment disc (13). The plurality of through holes (8) are arranged circumferentially on the adjustment disc (13), and the connecting ear (14) is connected and fixed to the lock cylinder connecting rod (12).

7. The dial reset structure according to claim 3 or 4, characterized in that: An arc-shaped limiting block (15) is provided in the active cavity (6). The arc-shaped limiting block (15) is used to limit the angle of rotation of the torsion elastic element (7) with the dial head (3) so as to limit the rotatable angle of the dial head (3).

8. The dial reset structure according to claim 6, characterized in that: The torsion elastic element (7) is a torsion spring (7); the adjusting disk (13) has a convex disk (16) on the side facing the dial (3), the convex disk (16) is placed in the movable cavity (6), and is matched with the movable cavity (6) and can rotate relative to it.

9. The dial reset structure according to claim 1 or 2, characterized in that: The dial (3) has multiple pull-limiting grooves (17) on the side facing the lock cylinder shaft (1). The lock block (18) on the lock cylinder shaft (1) can extend out and be inserted into the pull-limiting grooves (17) to drive the dial (3) to rotate.

10. A dial-reset lock cylinder, characterized in that: The device includes a dial reset structure as described in any one of claims 1 to 9, and also includes a lock head (19), which is connected to the lock cylinder shaft (1) and drives the lock cylinder shaft (1) to rotate.

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