Clutch transmission and intelligent lock
Technical Field
The invention relates to the field of locks, in particular to a clutch transmission and an intelligent lock.
Background
The transmission used by the intelligent lock in the market at present can obtain a relatively large transmission ratio because the input and output wheel sets of the motor are combined by a worm, a worm wheel and the like, and in practical application, the motor in the intelligent lock can realize forward rotation and reverse rotation according to an electronic instruction so as to drive the forward rotation and reverse rotation of the output wheel of the output gear set, thereby realizing unlocking and locking. But when the motor is static, the key is adopted to drive the lock core to unlock or the emergency knob is adopted to unlock, the whole transmission mechanism is required to be driven to operate, so that the unlocking strength is large, the use experience is poor, and the worm wheel are easy to generate structural self-locking, so that the unlocking can not be realized, the use is inconvenient, and the practicality and the application in the related functions of the intelligent lock field can not be met.
Disclosure of Invention
The invention aims to solve the technical problems that the prior art has the defects, the clutch transmission and the intelligent lock are provided, and the problems that the conventional clutch transmission and intelligent lock are overlarge in unlocking force and poor in use experience are solved.
In order to solve the above technical problems, the present invention provides a clutch transmission, including: the device comprises a shell, an input gear set, an output gear set and a clutch mechanism, wherein the input gear set, the output gear set and the clutch mechanism are arranged in the shell, and the input gear set is driven by a motor capable of rotating positively and negatively;
the clutch mechanism comprises a clutch transmission gear, a clutch driving gear and a column body which are coaxially and fixedly arranged, and the input gear set is in driving connection with the clutch transmission gear;
the clutch mechanism further comprises a clutch frame movably sleeved on the column body, a clutch gear arranged on the clutch frame and meshed with the clutch driving gear, and an elastic clamping piece clamped outside the column body and connected with the clutch frame; the elastic clamping piece can drive the clutch frame to rotate under the action of friction force of the column body until the clutch gear is in driving connection with the output gear set.
Still further preferred embodiments of the present invention are: the clutch frame is provided with a through hole in clearance fit with the column shaft, and the elastic clamping piece comprises a clamping ring part elastically clamped on the outer cylindrical surface of the column shaft and a connecting part connected to the clutch frame.
Still further preferred embodiments of the present invention are: the clutch frame is provided with a clamp nail, and the connecting part is clamped at the clamp nail.
Still further preferred embodiments of the present invention are: the clutch frame comprises two lugs, and each lug is provided with one clutch gear.
Still further preferred embodiments of the present invention are: the two lugs are arranged reversely.
Still further preferred embodiments of the present invention are: the column shaft is arranged between the clutch transmission gear and the clutch driving gear.
Still further preferred embodiments of the present invention are: the column body, the clutch transmission gear and the clutch driving gear are integrally formed.
Still further preferred embodiments of the present invention are: the input gear set comprises a worm arranged on a rotating shaft of the motor, and a power transmission gear or a power transmission gear set meshed between the worm and the clutch transmission gear.
Still further preferred embodiments of the present invention are: the shell comprises a lower shell and an upper shell provided with a concave cavity, and the power transmission gear or the power transmission gear set and the clutch transmission gear are positioned in the concave cavity of the upper shell; the worm is arranged in the lower shell, a clearance window is arranged on the side wall of the concave cavity, and the power transmission gear or the power transmission gear set is meshed with the worm through the clearance window.
Still further preferred embodiments of the present invention are: the column shaft is arranged between the clutch transmission gear and the clutch driving gear, a shaft hole is formed in the bottom of the concave cavity, the column shaft penetrates through the shaft hole to extend into the lower shell, and the clutch frame and the clutch gear are located in the lower shell.
Still further preferred embodiments of the present invention are: the bottom of the concave cavity is provided with a limiting boss protruding towards the lower shell, and when the clutch gear rotates to a driving connection position with the output gear set along with the clutch frame, the clutch frame or the elastic clamping piece and the limiting boss are blocked mutually.
In order to solve the technical problem, the invention also provides an intelligent lock which is characterized by comprising the clutch transmission.
The clutch driving gear and the clutch driving gear are coaxially and fixedly arranged, the clutch frame is movably sleeved on the column body, the clutch driving gear is meshed with the clutch gear on the clutch frame, and an elastic clamping piece connected with the clutch frame is clamped outside the column body. When the motor rotates forward or reversely, the elastic clamping piece can drive the clutch frame to rotate forward or reversely under the action of friction force of the column shaft to a position where the clutch gear is in driving connection with the output gear set, so that unlocking or locking is realized. Because the clutch frame is movably arranged between the clutch frame and the column body and is connected through the elastic clamping piece, when mechanical unlocking (key or emergency knob unlocking) is adopted, the output gear set can push the clutch gear to move outwards in the direction of disengaging, so that the clutch gear set is separated from a driving connection relation with the motor and the input gear set, the unlocking is more labor-saving, the structure is simple and reliable, and the use experience is good.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic illustration of the internal structure of a transmission of the present invention;
FIG. 2 is an exploded view of the transmission of the present invention;
FIG. 3 is a schematic perspective view of a clutch mechanism of the transmission of the present invention;
FIG. 4 is a schematic illustration of the engagement relationship of the various components within the transmission of the present invention;
FIG. 5 is a perspective view of the upper housing of the transmission of the present invention;
FIG. 6 is another angular perspective view of the upper housing of the transmission of the present invention;
FIG. 7 is a schematic illustration of the engagement relationship of the various components within the transmission during forward rotation of the motor of the present invention;
FIG. 8 is a schematic illustration of the engagement relationship of various components within a transmission during reverse rotation of the motor of the present invention;
FIG. 9 is a schematic diagram of the internal structure of a transmission of the present invention having two clutch gears.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1-3, the clutch transmission of the present embodiment includes a housing 1, an input gear set 2, an output gear set 3 and a clutch mechanism 4 connecting the input gear set 2 and the output gear set 3, which are disposed in the housing 1, wherein the input gear set 2 is driven by a motor 5 capable of rotating in opposite directions; the clutch mechanism 4 comprises a clutch transmission gear 41, a clutch driving gear 42 and a column body 43 which are coaxially and fixedly arranged, and the input gear set 2 is in driving connection with the clutch transmission gear 41; the clutch mechanism 4 further comprises a clutch frame 44 movably sleeved on the column body 43, a clutch gear 45 arranged on the clutch frame 44 and meshed with the clutch driving gear 42, and an elastic clamping piece 46 clamped outside the column body 43 and connected with the clutch frame 44; the elastic clamping piece 46 can drive the clutch frame 44 to rotate under the friction force of the column shaft 43 until the clutch gear 45 is in driving connection with the output gear set 3. The clutch driving gear 41, the clutch driving gear 42 and the column shaft 43 are coaxially fixed, the clutch frame 44 is movably sleeved on the column shaft 43, the clutch driving gear 42 is meshed with the clutch gear 45 on the clutch frame 44, and an elastic clamping piece 46 connected with the clutch frame 44 is clamped outside the column shaft 43. When the motor 5 rotates forward or backward, the elastic clamping piece 46 can drive the clutch frame 44 to rotate forward or backward under the friction force of the column body 43 to a position where the clutch gear 45 is in driving connection with the output gear set 3, so that unlocking or locking is realized. Because the clutch frame 44 and the column body 43 are movably arranged and are connected through the elastic clamping piece 46, when mechanical unlocking (key driving lock cylinder 6 or emergency knob 7 unlocking) is adopted, the output gear set 3 can push the clutch gear 45 to move outwards in the direction of disengaging, so that the clutch gear set is separated from indirect driving connection relation with the input gear set 2, and the unlocking is more labor-saving, simple and reliable in structure and good in use experience.
As shown in fig. 2 and 3, the input gear set 2 includes a worm 21 provided on the rotation shaft of the motor 5, and a power transmission gear or a power transmission gear set engaged between the worm 21 and a clutch transmission gear 41. Specifically, the present embodiment is a power transmission gear set, which is a worm wheel 22 meshed with the worm 21 and a coaxial pinion 23 provided on the worm wheel 22, and the coaxial pinion 23 is meshed with the clutch transmission gear 41.
As shown in fig. 2-6, to make the structure of the transmission more reasonable, the housing 1 includes a lower housing 11 and an upper housing 12 provided with a cavity 121, the worm wheel 22, the pinion 23 coaxially arranged with the worm wheel 22, and the clutch transmission gear 41 are located in the cavity 121 of the upper housing 12, and a cover plate 122 is provided on the cavity 121; the worm 21 is arranged in the lower shell 11, a clearance window 123 is arranged on the side wall of the concave cavity 121, the worm wheel 22 is meshed with the worm 21 through the clearance window 123, and the clutch transmission gear 41 is meshed with a pinion 23 coaxially arranged with the worm wheel 22 in the concave cavity 121. The output gear set 3 may be a single output gear 32 directly connected with a lock square bar (the square bar can drive the lock tongue to move in a telescopic way), or may be a gear set formed by at least one intermediate gear and the output gear 32. In this embodiment, the output gear set 3 includes a rear stage gear 31 provided on the lower housing 11 and an output gear 32 provided on the upper housing 12 and meshed with the rear stage gear 31, the rear stage gear 31 being for meshing with the clutch gear 45, and the upper housing 12 being provided with a hole site 124 for mounting the output gear 32. The gear body 311 is provided with a gear boss 312 protruding from an end surface, the gear body 311 is used for being meshed with the clutch gear 45, the gear boss 312 is a bevel gear boss, the output gear 32 is provided with a bevel gear end, and the bevel gear end is meshed with the bevel gear boss. Further, a shaft hole 125 is provided at the bottom of the cavity 121, the shaft 43 is disposed between the clutch transmission gear 41 and the clutch driving gear 42, the shaft 43 extends into the lower housing 11 through the shaft hole 125, and the clutch frame 44 and the clutch gear 45 are also disposed in the lower housing 11. Preferably, the shaft 43, the clutch transmission gear 41 and the clutch driving gear 42 are integrally formed, and the outer surface of the shaft 43 is a cylindrical surface, or at least the outer surface of the contact position with the elastic clamping member 46 is a cylindrical surface. The bottom of the cavity 121 is provided with a limiting boss 126 protruding toward the lower housing 11, and when the clutch gear 45 rotates along with the clutch frame 44 to a driving connection position with the rear stage transmission gear 31 of the output gear set 3, the clutch frame 44 or the elastic clamping piece 46 and the limiting boss 126 are blocked mutually. The spacing boss 126 can prevent the clutch gear 45 from continuously moving towards the direction of compressing the rear-stage transmission gear 31 of the output gear set 3 due to the rotation of the column shaft 43 after being meshed with the output gear set 3, so that the friction and abrasion between the clutch gear 45 and the output gear set 3 can be effectively reduced, and the noise can be reduced.
As shown in fig. 3 and 9, the clutch frame 44 is provided with a through hole 441 in clearance fit with the column body 43, the elastic clamping member 46 includes a clamping ring portion 461 elastically clamped on an outer cylindrical surface of the column body 43, and a connecting portion 462 connected to the clutch frame 44, and the clamping ring portion 461 is not limited to the annular ring, which is integrally shown and is in contact with the column body 43, and may be a special-shaped structure in which only a part of the clamping ring portion contacts with the column body 43. Further, the clutch frame 44 is provided with a clip 442, and the connecting portion 462 is clamped at the clip 442. Specifically, the elastic clamping member 46 is an elastic member, the connecting portion 462 is a clamping rod of the opening of the clamping ring portion 461, the clamping ring portion 461 is tightly fitted on the column body 43, and friction and sliding effects are achieved (that is, the elastic clamping member 46 is elastically clamped on the cylindrical surface of the column body 43 and allows the column body 43 to freely rotate relative to the clamping ring portion 461), the elastic clamping member 46 is connected with the clutch frame 44, and the opening is clamped on the clamping nail 442. Further, to reduce the response time of the switch lock, the clutch carrier 44 includes two lugs 443, and one clutch gear 45 is disposed on each lug 443. Preferably, the two ears 443 are oppositely disposed.
As described in fig. 1-8, the clutch transmission of the present embodiment operates as follows: when the motor 5 rotates positively, the clutch transmission gear 41 is driven to rotate through the worm 21 and the worm wheel 22, and as the elastic clamping piece 46 clamps the surface of the column body 43, a certain friction force exists, the elastic clamping piece also rotates and drives the clutch frame 44 to rotate around the column body 43 together, the limit boss 126 at the bottom of the concave cavity 121 of the upper shell 12 limits the rotation range of the clutch frame 44, the clutch frame 44 can only rotate to the position where the clutch gear 45 on the clutch frame 44 can be just meshed with the rear-stage speed-changing gear 31, and at the moment, the motor 5 can drive the output gear 32 to complete unlocking or locking actions after continuing to rotate; when the motor 5 rotates reversely, the clutch gear 45 rotates to engage the rear-stage gear 31, and the motor 5 continues to rotate to drive the output gear 32 to complete the locking or unlocking operation. When the motor 5 stops rotating, the worm 21, the worm wheel 22 and the clutch transmission gear 41 are in a meshing self-locking state, and the output gear set 3 (finally the rear-stage speed-changing gear 31) is driven to rotate in a movable direction under the action of external force such as a key or the emergency knob 7, so that the clutch gear 45 is stirred to drive the clutch frame 44 to rotate so as to be separated from the meshing of the rear-stage speed-changing gear 31, and at the moment, the output gear 32 can smoothly and positively rotate freely under the action of external force such as the key driving lock cylinder 6 or the emergency knob 7, namely, the external force is input from the rear stage, and the output gear set 3 can be easily rotated in at least one direction without being limited by self locking of the worm 21, the worm wheel 22 and other mechanisms.
Example two
The embodiment also provides an intelligent lock, which comprises the clutch transmission in the first embodiment.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.