Return clutch device of lock cylinder
By designing a lock core return clutch device including square shaft sleeve, clutch square shaft, reset shaft, clutch shaft assembly and spring, the problem that the existing lock core cannot be equipped with a dull tongue and oblique tongue structure is solved, and the function of automatic return and direction indistinguishable from the connection strip is realized, simplifying the installation process and reducing the risk of misinstallation.
Patent Information
- Application Number
- CN202421648347.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing lock core cannot be equipped with two lock core structures: dull tongue and oblique tongue mechanical, which leads to the need to distinguish the direction of the connecting strip during installation, which increases the installation complexity and the risk of misinstallation.
A lock core retracting clutch device is designed, including a square shaft sleeve, a clutch square shaft, a reset rotating shaft, a clutch shaft assembly, a two-in-one first elastic member of the collection spring and a torsion spring. Through the cooperation of these components, the automatic return and direction indistinguishable of the connecting strip is realized.
The connection strip is automatically returned to position, and there is no need to distinguish the installation direction of the connection strip, which solves the wild-distribution problem of the dull tongue and oblique tongue structure, simplifies the installation process and reduces the risk of misinstallation.
Smart Images
Figure CN222924260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locks, in particular to a return clutch device of a lock core. Background Art
[0002] Regarding the installation of the deadbolt lock core structure, when the lock core is installed on the door, some door locks are installed on the left side of the door, and some door locks are installed on the right side of the door, so the lock core needs to distinguish between left and right directions to unlock. When designing the lock core, the left and right opening directions must be taken into consideration. At this time, the corresponding connecting strip of the deadbolt lock needs to be able to rotate 180° forward and backward, but the normal deadbolt lock can only rotate 90°. This also leads to the need to confirm whether the installation direction of the connecting strip is correct before installation.
[0003] When installing the oblique tongue lock core structure, since the front and back of the oblique tongue will be connected to the square tube, the direction of the square tube is not easy to distinguish, and the direction of the square tube can be rotated at will. During the installation process, the user needs to find the positioning points marked by the factory for installation. Once the user ignores the positioning points, it is easy to install in the wrong direction.
[0004] Therefore, there is currently no lock core structure in the market that is compatible with both the dead bolt and the inclined bolt structure and does not distinguish the direction of the connecting strip. Utility Model Content
[0005] The utility model provides a return clutch device for a lock core, aiming to solve the problem that the existing lock core cannot be compatible with two mechanical lock core structures, namely, a dead bolt and a tilted bolt.
[0006] The utility model provides a return clutch device for a lock core, comprising a square shaft sleeve, a clutch square shaft, a reset shaft, a clutch shaft assembly, and a first elastic member that integrates a spring and a torsion spring. The square shaft sleeve is provided with a square shaft hole and a clutch shaft slot. The clutch square shaft is docked with the square shaft sleeve through the first elastic member. One end of the clutch square shaft is provided with a square shaft protrusion, and the square shaft protrusion is aligned with the square shaft hole. The reset shaft sleeves the clutch square shaft and is connected in the square shaft sleeve. The bottom of the clutch shaft slot is provided with a first clutch hole, and the top of the reset shaft is provided with a second clutch hole. The clutch shaft assembly is installed in the clutch shaft slot, and the clutch shaft assembly is aligned with the first clutch hole and the second clutch hole.
[0007] As a further improvement of the present invention, the clutch shaft assembly includes a fixed sleeve, a clutch shaft, and a second elastic member. The fixed sleeve is connected to the clutch shaft slot, the clutch shaft is docked with the clutch shaft slot through the second elastic member, and the clutch shaft is movably connected between the fixed sleeve and the clutch shaft slot.
[0008] As a further improvement of the present utility model, the clutch shaft includes an upper shaft head, a lower shaft head, and a clutch shaft convex ring. The upper shaft head, the clutch shaft convex ring, and the lower shaft head are butt-jointed in sequence. The second elastic member is sleeved outside the lower shaft head, and both ends thereof respectively abut against the clutch shaft convex ring and the clutch shaft slot. When the clutch shaft is pressed down, the lower shaft head is snapped into the first clutch hole and the second clutch hole.
[0009] As a further improvement of the present utility model, the fixing sleeve is provided with a sleeve hole. In a normal state, the clutch shaft convex ring abuts against the bottom of the fixing sleeve, and the upper shaft head is snapped into the sleeve hole.
[0010] As a further improvement of the present utility model, both the square shaft sleeve and the clutch square shaft are provided with elastic member card slots, and both ends of the first elastic member are respectively fixed in the elastic member card slots of the square shaft sleeve and the clutch square shaft.
[0011] As a further improvement of the present utility model, the other end of the clutch square shaft is provided with a square shaft convex shaft, and the reset rotating shaft is further provided with a rotating shaft hole. The reset rotating shaft is matched and connected with the square shaft convex shaft through the rotating shaft hole.
[0012] As a further improvement of the present utility model, the return clutch device of the lock core further includes a square tube. One end of the square shaft sleeve is provided with a square tube hole, and one end of the square tube is connected in the square tube hole.
[0013] As a further improvement of the present utility model, the return clutch device of the lock core further includes a housing. The housing is sleeved outside the square shaft sleeve and fixes the square shaft sleeve, the clutch square shaft, and the reset rotating shaft on the lock body.
[0014] The beneficial effects of the present utility model are as follows: By using the first elastic member which combines the internal torsion spring and the second spring as a new connecting bar structure, the function of automatic return of the connecting bar and no need to distinguish the installation direction of the connecting bar is realized. By using the switching clutch structures, the effect of universal matching of the dead bolt and the diagonal bolt is realized. Description of the Drawings
[0015] Figure 1 is the overall structure diagram of the first perspective of the double-clutch structure intelligent lock core of the present utility model;
[0016] Figure 2 is the overall structure diagram of the second perspective of the double-clutch structure intelligent lock core of the present utility model;
[0017] Figure 3 is the structure explosion diagram of the double-clutch structure intelligent lock core of the present utility model;
[0018] Figure 4 is the structure decomposition diagram of the clutch shaft assembly and the square shaft sleeve in the present utility model;
[0019] Figure 5 is the structure cross-sectional view of the double-clutch structure intelligent lock core of the present utility model;
[0020] Figure 6 This is the structural diagram of the intelligent double-clutch lock core of the present utility model installed on the lock body. Specific implementation manners
[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0022] As Figures 1 to 5 shown, a return clutch device of a lock core of the present utility model includes a square shaft sleeve 1, a clutch square shaft 2, a return rotating shaft 3, a clutch shaft assembly, a first elastic member 4 which combines a coil spring and a torsion spring. The square shaft sleeve 1 is provided with a square shaft hole 11 and a clutch shaft slot 12. The clutch square shaft 2 is docked with the square shaft sleeve 1 through the first elastic member 4. One end of the clutch square shaft 2 is provided with a square shaft protrusion 21. The square shaft protrusion 21 is aligned with the square shaft hole 11. The return rotating shaft 3 sleeves the clutch square shaft 2 and is connected inside the square shaft sleeve 1. A first clutch hole 13 is provided at the bottom of the clutch shaft slot 12. A second clutch hole 31 is provided at the top of the return rotating shaft 3. The clutch shaft assembly is installed in the clutch shaft slot 12. The clutch shaft assembly is aligned with the first clutch hole 13 and the second clutch hole 31. The shape of the square shaft hole 11 can match the shape of the square shaft protrusion 21. Its cross-sectional shape is preferably a polygon structure. When the clutch square shaft 2 rotates, through the cooperation of the square shaft protrusion 21 and the square shaft hole 11, the square shaft sleeve 1 can be driven to move together.
[0023] The return clutch device of this lock core has two sets of clutch structures. The first set of clutch structure is composed of the clutch square shaft 2, the first elastic member 4 and the square shaft sleeve 1. Push the clutch square shaft 2 forward to make it contact with the square shaft sleeve 1 against the elastic force of the first elastic member 4. The square shaft protrusion 21 is docked with the square shaft hole 11 to realize the closing of the clutch square shaft 2 and the square shaft sleeve 1. When the thrust is removed, the first elastic member 4 drives the clutch square shaft 2 to rebound, realizing the separation of the clutch square shaft 2 and the square shaft sleeve 1. The second set of clutch structure is composed of the square shaft sleeve 1, the return rotating shaft 3 and the clutch shaft assembly. When the clutch shaft assembly is pressed down by an external force, the clutch shaft assembly is simultaneously stuck into the first clutch hole 13 and the second clutch hole 31, realizing the closing and linkage between the square shaft sleeve 1 and the return rotating shaft 3. After the external pressing force is removed, the clutch shaft assembly simultaneously disengages from the first clutch hole 13 and the second clutch hole 31, disconnecting the linkage between the square shaft sleeve 1 and the return rotating shaft 3.
[0024] The return clutch device of the lock core uses the first elastic member of the two-in-one internal torsion spring as a new connecting strip structure to realize the automatic return of the connecting strip, without distinguishing the function of the installation direction of the connecting strip. When installing the lock core, the connecting strip needs to be turned to the middle position so that the connecting strip can be turned 90 degrees to the left and 90 degrees to the right. The first elastic member 4 is fixed by the structural limit of the clutch square shaft 2 and the square shaft sleeve 1 to realize the function of automatic return of the manually turned connecting strip.
[0025] The clutch shaft assembly includes a fixed sleeve 5, a clutch shaft 6, and a second elastic member 7. The fixed sleeve 5 is connected to the clutch shaft slot 12. The clutch shaft 6 is docked with the clutch shaft slot 12 through the second elastic member 7. The clutch shaft 6 is movably connected between the fixed sleeve 5 and the clutch shaft slot 12. The second elastic member 7 can be a spring. After the fixed sleeve 5 and the square sleeve 1 are connected, an upward and downward movement space for the clutch shaft 6 is formed inside. When an external force presses downward, the clutch shaft 6 overcomes the elastic force of the second elastic member 7 and moves downward to the bottom of the clutch shaft slot 12. When there is no external force, the second elastic member 7 drives the clutch shaft 6 to rebound, so that the clutch shaft 6 moves upward to the position of the fixed sleeve 5.
[0026] The clutch shaft 6 includes an upper shaft head 61, a lower shaft head 62, and a clutch shaft convex ring 63. The upper shaft head 61, the clutch shaft convex ring 63, and the lower shaft head 62 are connected in sequence. The second elastic member 7 is sleeved on the outside of the lower shaft head 62, and the two ends are respectively against the clutch shaft convex ring 63 and the clutch shaft slot 12. When the clutch shaft 6 is pressed down, the lower shaft head 62 is inserted into the first clutch hole 13 and the second clutch hole 31. Under the downward pressure of the external force, the clutch shaft 6 overcomes the elastic force of the first elastic member 4 and moves downward, and is inserted into the first clutch hole 13 and the second clutch hole 31 at the same time, so that the square shaft sleeve 1 and the reset shaft 3 can be synchronously linked.
[0027] The fixing sleeve 5 is provided with a sleeve hole 51. In a normal state, the clutch shaft convex ring 63 presses against the bottom of the fixing sleeve 5, and the upper shaft head 61 is inserted into the sleeve hole 51. In a normal state, the second elastic member 7 applies elastic force to lift the clutch shaft 6 toward the fixing sleeve 5. At this time, the lower shaft head 62 is separated from the first clutch hole 13 and the second clutch hole 31, and the upper shaft head 61 is inserted into the sleeve hole 51 and protrudes from the fixing sleeve 5. The next time the clutch is closed, the clutch shaft 6 is pressed down by the protruding upper shaft head 61.
[0028] The square shaft sleeve 1 and the clutch square shaft 2 are both provided with elastic member slots 14 and 22, and the two ends of the first elastic member 4 are respectively fixed in the elastic member slots 14 and 22 of the square shaft sleeve 1 and the clutch square shaft 2. When the first elastic member 4 is pressed and used as a spring, the elastic member slots 14 and 22 of the square shaft sleeve 1 and the clutch square shaft 2 can be used as pressing surfaces of the first elastic member 4; when the first elastic member 4 is pressed and used as a torsion spring, the elastic member slots 14 and 22 of the square shaft sleeve 1 and the clutch square shaft 2 can be used as supporting points at both ends of the first elastic member 4, fixing the first elastic member 4 to help apply torque.
[0029] At the other end of the clutch square shaft 2, there is a square shaft convex shaft 23. The return rotation shaft 3 is also provided with a shaft hole. The return rotation shaft 3 is connected to the square shaft convex shaft 23 in a matching manner through the shaft hole. The shape of the shaft hole matches the shape of the square shaft convex shaft 23, and its cross-sectional shape is preferably a polygon structure. When the clutch square shaft 2 rotates, through the cooperation of the square shaft convex shaft 23 and the shaft hole, the return rotation shaft 3 can be driven to move together.
[0030] The return clutch device of the lock core further includes a square tube 8. There is a square tube hole 15 on the outer side of the square shaft sleeve 1. One end of the square tube 8 is connected in the square tube hole 15. The other end of the square tube 15 is fixed on the front panel of the lock body 10. After the clutch shaft 6 is pressed down by driving the motor 102, the knob handle is rotated to drive the square tube 15 to drive the lock tongue to unlock. The square tube 15 plays a role in driving the lock tongue.
[0031] The return clutch device of the lock core further includes a housing 9. The housing 9 is sleeved outside the square shaft sleeve 1 and fixes the square shaft sleeve 1, the clutch square shaft 2, and the return rotation shaft 3 on the lock body 10. There are a plurality of mounting holes around the housing 9. During installation, first, the assembled square shaft sleeve 1, clutch square shaft 2, return rotation shaft 3, clutch shaft assembly, and the first elastic member 4 are attached to the lock body 10, and then the housing 9 is sleeved on these fittings and the whole is fixed to the lock body 10, which facilitates the installation of the overall structure.
[0032] Combined Figure 6 As shown, the return clutch device of this lock core has two mechanical unlocking methods, and the specific working principle is as follows:
[0033] The first mechanical unlocking method: The key 101 can be placed on the front side. By pushing the clutch square shaft 2 with the key 101, that is, pushing Figure 6 to the position in area A in [description], the clutch square shaft 2 is pushed to contact the square shaft sleeve 1 against the elastic force of the first elastic member 4. At this time, the square shaft convex block 21 is stuck into the square shaft hole 11. The key 101 is rotated to make the clutch square shaft 2 and the square shaft sleeve 1 rotate together, and it is transmitted to the lock tongue and the rear panel through the square tube 8 to achieve the first mechanical unlocking function. After unlocking is completed, the key 101 is rotated back to its original position, and the clutch square shaft 2 retracts under the action of the first elastic member 4 and disengages from the square shaft sleeve 1. At this time, the key 101 can be pulled out.
[0034] The second mechanical unlocking method: The key 101 can be placed on the lower side, that is, the key 101 is inserted into Figure 6At the position of the middle B area, by pulling the key 101 to drive the motor 102 to drive the clutch shaft 6, the lower shaft head 62 of the clutch shaft 6 is simultaneously inserted into the first clutch hole 13 and the second clutch hole 31, so that the reset shaft 3 and the square shaft sleeve 1 are linked. At this time, the knob installed on the clutch square shaft 2 is twisted, and the clutch square shaft 2 drives the reset shaft 3 and the square shaft sleeve 1 to rotate together through the square tube 8 to the lock and the rear panel, realizing the second mechanical unlocking function. After the unlocking is completed, the clutch shaft 6 is reset, and the linkage between the reset shaft 3 and the square shaft sleeve 1 is disconnected. After the square shaft sleeve 1 is reset, the torque of the first elastic member 4 drives the reset shaft 3 and the clutch square shaft 2 to reset together, and the key 101 can be pulled out at this time.
[0035] In the utility model, the clutch shaft 6 and the square shaft sleeve 1 utilize the clamping position of the clutch shaft 6 and the spring to clamp into the upper and lower clutch holes, so that the first elastic member 4 of the spring-torsion spring two-in-one can be installed regardless of direction, and the automatic resetting function of the clutch square shaft 2 is realized by the torsion spring plus the spring.
[0036] Compatible with two ways of mechanical unlocking, the clutch square shaft 2 is assembled with the lock core accessory, and transmitted to the lock and the rear panel through the clutch transmission method.
[0037] The clutch shaft assembly structure uses the motor 102 to press down, and the clutch transmission is used to twist the knob handle (the knob handle is connected to the clutch square shaft 2, and the knob handle is not shown in the figure) to unlock the lock. The key 101 can also be placed on the bottom side and on the front side. The front side is placed by pushing the clutch rod with the key 101 to unlock the lock. The bottom side is placed by pulling the key 101 to drive the motor 102 to drive the clutch shaft 6 to open and close the lock. The clutch structure of this lock is an independent integrated module that can be widely used in various smart locks.
[0038] This clutch module is small in size and compatible with various types of locks. It is compatible with both fixed-bolt and inclined-bolt locks. It is simple to assemble and easy to use, achieving a modular assembly effect.
[0039] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A return clutch device for a lock core, characterized in that: It includes a square shaft sleeve, a clutch square shaft, a reset shaft, a clutch shaft assembly, and a first elastic member that integrates a spring and a torsion spring. The square shaft sleeve is provided with a square shaft hole and a clutch shaft slot. The clutch square shaft is docked with the square shaft sleeve through the first elastic member. One end of the clutch square shaft is provided with a square shaft protrusion, and the square shaft protrusion is aligned with the square shaft hole. The reset shaft sleeves the clutch square shaft and is connected to the square shaft sleeve. The bottom of the clutch shaft slot is provided with a first clutch hole, and the top of the reset shaft is provided with a second clutch hole. The clutch shaft assembly is installed in the clutch shaft slot, and the clutch shaft assembly is aligned with the first clutch hole and the second clutch hole.
2. The return clutch device of the lock core according to claim 1, characterized in that: The clutch shaft assembly includes a fixed sleeve, a clutch shaft, and a second elastic member. The fixed sleeve is connected in the clutch shaft slot. The clutch shaft is docked with the clutch shaft slot through the second elastic member. The clutch shaft is movably connected between the fixed sleeve and the clutch shaft slot.
3. The return clutch device of the lock core according to claim 2, characterized in that: The clutch shaft includes an upper shaft head, a lower shaft head, and a clutch shaft convex ring. The upper shaft head, the clutch shaft convex ring, and the lower shaft head are connected in sequence. The second elastic member is sleeved on the outside of the lower shaft head and the two ends respectively abut the clutch shaft convex ring and the clutch shaft slot. When the clutch shaft is pressed down, the lower shaft head is inserted into the first clutch hole and the second clutch hole.
4. The lock core return clutch device according to claim 3, characterized in that: The fixing sleeve is provided with a sleeve hole. In a normal state, the clutch shaft convex ring presses against the bottom of the fixing sleeve, and the upper shaft head is clamped in the sleeve hole.
5. The return clutch device of the lock core according to claim 1, characterized in that: The square shaft sleeve and the clutch square shaft are both provided with elastic member slots, and the two ends of the first elastic member are respectively fixed in the elastic member slots of the square shaft sleeve and the clutch square shaft.
6. The return clutch device of the lock core according to claim 1, characterized in that: The other end of the clutch square shaft is provided with a square shaft convex shaft, and the reset shaft is also provided with a shaft hole, and the reset shaft is matched and connected with the square shaft convex shaft through the shaft hole.
7. The lock core return clutch device according to claim 1, characterized in that: It also includes a square tube, the outer side of the square shaft sleeve is provided with a square tube hole, and one end of the square tube is connected to the square tube hole.
8. The return clutch device of the lock core according to claim 1, characterized in that: The utility model also comprises a shell, which is sleeved on the outside of the square shaft sleeve and fixes the square shaft sleeve, the clutch square shaft and the reset rotating shaft on the lock body.