CN109253214B - Emergency gearbox - Google Patents
Emergency gearbox Download PDFInfo
- Publication number
- CN109253214B CN109253214B CN201811265795.3A CN201811265795A CN109253214B CN 109253214 B CN109253214 B CN 109253214B CN 201811265795 A CN201811265795 A CN 201811265795A CN 109253214 B CN109253214 B CN 109253214B
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- CN
- China
- Prior art keywords
- clutch
- wheel
- emergency
- speed changing
- gearbox
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/039—Gearboxes for accommodating worm gears
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/002—Geared transmissions
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/0026—Clutches, couplings or braking arrangements
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0084—Key or electric means; Emergency release
- E05B2047/0086—Emergency release, e.g. key or electromagnet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Pulleys (AREA)
Abstract
The invention relates to the field of door lock accessories, in particular to an emergency gearbox, which comprises a gearbox body, a power output gear set, an automatic power input gear set, a clutch assembly, a clutch fitting piece and a driving gear, wherein the clutch fitting piece is connected with an emergency knob, and when the clutch fitting piece rotates along with the emergency knob, the clutch assembly can be driven to be in a separation or combination state; the driving gear comprises a meshing zone meshed with the power output gear set and a clearance zone disengaged from the power output gear set; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, the clutch matching piece drives the clutch component to be in a separation state; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch assembly to be in a combined state. When the emergency knob is in a power failure state, the clutch and unlocking operations can be synchronously completed by twisting the emergency knob, and the operation is extremely simple.
Description
Technical Field
The invention relates to the field of door lock accessories, in particular to an emergency gearbox.
Background
The quality of the burglary-resisting door on the market is uneven at present, and the tool to lock is one of the important consideration index of the burglary-resisting security performance of door, and almost all tool to locks are mechanical type, and main spring bolt is cylinder or square, twists the internal stroke piece of lock through external force and reaches the purpose of switch lock, and this kind of lock body structure is complicated, and the accessory is numerous, and the fault rate is big, and can not satisfy and be matcing with the intelligent tool to lock that is rising.
The common intelligent lock is different from the traditional mechanical lock, is a lockset which can be more intelligent in the aspects of user identification, safety, management and the like, and controls the opening and closing of the burglary-resisting door in an intelligent remote control mode.
However, when the existing intelligent lock is powered off, the lock is opened and closed by driving the lock tongue through the motor, the related transmission structure for manually opening the anti-theft door through the emergency unlocking device is complex, the situation that the internal structure is blocked or invalid and unlocking is impossible easily occurs, or a user needs to use a large force to overcome the structure friction to realize unlocking; in addition, the existing clutch device has higher precision requirement, and can accurately realize clutch operation. In addition, the existing emergency unlocking device is often provided with a clutch structure and an unlocking structure, a user needs to screw the clutch structure to realize clutch and then screw the unlocking structure to realize unlocking, the operation is complex, the process is fixed, the user needs to clutch and then unlock, and the user often needs to operate with both hands, so that great inconvenience is brought to the user.
Disclosure of Invention
The invention aims to solve the technical problems that the emergency gearbox is complex in emergency structure and high in clutch precision requirement, and aims to overcome the defects in the prior art.
In order to solve the technical problem, the invention provides an emergency gearbox, which comprises a gearbox body, a power output gear set, an automatic power input gear set arranged in the gearbox body and driven by a motor, and a clutch assembly arranged between the power output gear set and the automatic power input gear set, wherein the emergency gearbox also comprises a clutch fitting piece and a driving gear, wherein the clutch fitting piece is connected with an emergency knob, and the clutch fitting piece can drive the clutch assembly to be in a separation or combination state when rotating along with the emergency knob; the driving gear comprises a meshing zone meshed with the power output gear set and a clearance zone disengaged from the power output gear set; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, the clutch matching piece drives the clutch assembly to be in a separation state; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch assembly to be in a combined state.
Among them, the preferred scheme is: the clutch fitting is provided with a first groove.
Among them, the preferred scheme is: the clutch assembly comprises a clutch rod, a medium-stage speed changing wheel arranged at one end of the clutch rod and a medium-stage speed changing small wheel coaxially arranged with the medium-stage speed changing wheel, when the emergency knob drives the clutch matching piece to rotate, one end of the clutch rod descends, the other end of the clutch rod ascends, and the medium-stage speed changing wheel is separated from the medium-stage speed changing small wheel; when one end of the clutch lever is positioned in the first groove, the intermediate speed change wheel is combined with the intermediate speed change small wheel.
Among them, the preferred scheme is: the middle-stage speed-changing wheel is provided with a bulge, the middle-stage speed-changing small wheel is provided with a second groove which is combined with or separated from the bulge under the driving of the emergency component, or the middle-stage speed-changing small wheel is provided with a bulge, and the middle-stage speed-changing wheel is provided with a second groove which is combined with or separated from the bulge under the driving of the emergency component.
Among them, the preferred scheme is: auxiliary sliding grooves are formed in two sides of the second groove, and end edges of adjacent auxiliary sliding grooves are tangentially arranged.
Among them, the preferred scheme is: the boss is provided with a frustum.
Among them, the preferred scheme is: the clutch assembly further comprises a first clutch spring used for pressing down the intermediate speed changing wheel, a shaft sleeved by the intermediate speed changing wheel is a clutch shaft, and the first clutch spring is arranged between the intermediate speed changing wheel and the clutch shaft or a cover plate of the gearbox body; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch rod to be in a stable state, the first clutch spring presses the intermediate speed changing wheel, and the intermediate speed changing wheel and the intermediate speed changing small wheel are combined.
Among them, the preferred scheme is: one end of the intermediate speed change wheel is provided with an extension part, and one end of the clutch lever is abutted against the extension part; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, the clutch matching piece drives one end of the clutch rod to descend, the other end of the clutch rod ascends, and the extending part is tilted to separate the intermediate speed changing wheel from the intermediate speed changing small wheel.
Among them, the preferred scheme is: the clutch assembly further comprises a torsion spring and a second clutch spring coaxially arranged with the intermediate speed changing wheel, and one end of the torsion spring is abutted against the clutch lever; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch rod to be in a stable state, the torsion spring is in a force storage state, and the second clutch spring is in a compression state, so that the intermediate speed change wheel and the intermediate speed change pinion are combined; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, one end of the clutch lever is driven by the clutch matching piece to descend, the other end of the clutch lever is driven by the clutch matching piece to ascend, the torsion spring is in a releasing state, and the second clutch spring is in a releasing state, so that the intermediate speed change wheel and the intermediate speed change small wheel are arranged in a separated mode.
Among them, the preferred scheme is: the automatic power input gear set comprises a gear assembly, a worm and a worm wheel meshed with the worm, wherein the gear assembly is provided with a front-stage speed changing wheel which is coaxially fixedly arranged with the worm wheel and meshed with a middle-stage speed changing wheel, and the height of the front-stage speed changing wheel is larger than or equal to the stroke of the middle-stage speed changing wheel in the clutch process.
Compared with the prior art, the emergency gearbox has the advantages that by designing the emergency gearbox, when the emergency gearbox is in the power failure state, the clutch matching piece can drive the clutch component to separate by screwing the emergency knob, then emergency unlocking is carried out, the requirement on excessive precision is not needed, and the whole structure is very ingenious as long as the emergency knob is screwed; in addition, the driving gear can be driven to rotate when the emergency knob is screwed, and the driving gear can drive the power output gear set to output power, so that a user can realize the clutch and unlocking operation simultaneously only by directly screwing the emergency knob, and the operation is extremely simple and convenient.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is an exploded view of an emergency gearbox of the present invention;
FIG. 2 is a schematic representation of one embodiment of an emergency gearbox of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic illustration of a medium speed gearbox of the present invention;
FIG. 5 is a schematic view of another embodiment of an emergency gearbox of the present invention;
fig. 6 is a partial enlarged view of fig. 5.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1-6, the present invention provides a preferred embodiment of an emergency gearbox.
The emergency gearbox is mounted on the lock and used for driving the lock to be unlocked. The emergency gearbox comprises a gearbox body 10, a power output gear set, an automatic power input gear set arranged in the gearbox body 10 and driven by a motor 31, and a clutch assembly arranged between the power output gear set and the automatic power input gear set, the emergency gearbox further comprises an emergency assembly, the emergency assembly drives the clutch assembly to complete clutch operation in a power failure state, and at the moment, the automatic power input gear set does not drive the power output gear set to output power, but instead, the emergency assembly drives the power output gear set to output power. Therefore, when the lock is required to be unlocked manually, for example, the lock can be unlocked even in a power failure state.
Specifically, referring to fig. 1, the clutch assembly includes a clutch lever 21, a middle-stage gearbox wheel 11 disposed at one end of the clutch lever 21 and in driving connection with the clutch lever 21, and a middle-stage gearbox wheel 12 disposed coaxially with the middle-stage gearbox wheel 11, wherein the clutch lever 21 is a clutch lever and is mounted on the gearbox body 10, when one end of the clutch lever 21 descends, the other end of the clutch lever must ascend, and the middle-stage gearbox wheel 11 ascends along with the clutch lever, and is separated from the middle-stage gearbox wheel 12, that is, the middle-stage gearbox wheel 11 and the middle-stage gearbox wheel 12 do not influence each other.
Further, referring to fig. 1 and 2, the emergency assembly includes a clutch matching member provided at the other end of the clutch lever 21 and an emergency knob 51 coaxially fixed with the clutch matching member, the clutch matching member rotates along with the rotation of the emergency knob 51, and the clutch matching member is provided with a first groove 221. When the emergency knob 51 drives the clutch matching piece to rotate, the clutch rod 21 gradually breaks away from the first groove 221, at this time, the clutch rod 21 is pressed down by the pressing force of the clutch matching piece, and the other end of the clutch rod 21 is lifted up, so that the intermediate speed changing wheel 11 is separated from the intermediate speed changing small wheel 12. When the emergency knob 51 does not drive the clutch matching piece to rotate, one end of the clutch lever 21 is located in the first groove 221, even though one end of the clutch lever 21 has an ascending trend, the upper end face of one end of the clutch lever 21 is mutually abutted against the bottom end face of the first groove 221, one end of the clutch lever 21 is limited in the first groove 221, the clutch lever 21 is in a stable state, one end of the clutch lever 21 cannot continuously ascend, at the moment, the intermediate speed changing wheel 11 is pressed by the other end of the clutch lever 21, the intermediate speed changing wheel 11 and the intermediate speed changing wheel 12 are combined, the automatic power input gear set drives the intermediate speed changing wheel 11 to rotate under the driving of the motor 31, the intermediate speed changing wheel 11 drives the intermediate speed changing wheel 12 to rotate, and the intermediate speed changing wheel 12 drives the power output gear set to output power. The clutch matching piece is a clutch gear 22, and of course, the clutch matching piece may be other parts provided with grooves instead of gears, and the purpose of the clutch gear 22 is to be meshed with the lock cylinder structure in this embodiment, so that the lock cylinder structure can drive the clutch gear 22 to rotate, and the clutch operation can be realized in the door or outside the door.
Still further, referring to fig. 1, the emergency assembly further includes a driving gear 52 coaxially fixed to the emergency knob 51, the driving gear 52 is disposed on one side of the power output gear set, and the driving gear 52 rotates with the rotation of the emergency knob 51. When the emergency knob 51 is screwed, the clutch gear 22 and the driving gear 52 are driven to synchronously rotate, one end of the clutch lever 21 is driven by the clutch gear 22 to descend, and the other end of the clutch lever 21 is driven by the clutch gear to ascend, at this time, the intermediate speed change wheel 11 and the intermediate speed change small wheel 12 are separately arranged, the driving gear 52 is in driving connection with the power output gear set, and the driving gear 52 continues to rotate along with the rotation of the emergency knob 51 to drive the power output gear set to output power. In this way, the clutch and unlocking operations can be simultaneously realized by directly screwing the emergency knob 51, so that the whole structure is extremely simple, and the operation is extremely simple. The driving gear 52 is provided with a clearance area 521, when the emergency knob 51 is not rotated, the clearance area 521 faces to the power output gear set, that is, the driving gear 22 is disengaged from the power output gear set, so that the automatic power input gear set does not drive the driving gear 52 to rotate when the power output gear set is driven to output power, and the emergency knob 51 and the clutch gear 22 are not driven to rotate; the drive gear is further provided with a meshing area 522, when the emergency knob 51 rotates, the meshing area 522 is meshed with the power output gear set, and the drive gear 22 drives the power output gear set to output power.
Further, referring to fig. 3 and fig. 4, the intermediate-stage gearbox wheel 11 is provided with a protrusion 121, the intermediate-stage gearbox small wheel 12 is provided with a second groove 111 adapted to the protrusion 121, and under the driving action of the emergency component, the protrusion 121 extends into or extends out of the second groove 111 to realize the combination or separation of the two, so that the intermediate-stage gearbox wheel 11 and the intermediate-stage gearbox small wheel 12 are combined or separated; or, the second groove 111 is formed on the intermediate-stage speed-changing small wheel 12, the second groove 111 corresponding to the protrusion 121 is formed on the intermediate-stage speed-changing wheel 11, and under the driving action of the emergency component, the protrusion 121 stretches into or stretches out of the second groove 111 to realize the combination or separation of the two, so that the intermediate-stage speed-changing wheel 11 and the intermediate-stage speed-changing small wheel 12 are combined or separated; or, the intermediate-stage speed-changing wheel 11 is provided with a second groove 111 and a protrusion 121, the intermediate-stage speed-changing small wheel 12 is also provided with the second groove 111 and the protrusion 121, and under the driving action of the emergency component, the protrusion 121 stretches into or stretches out of the second groove 111 to realize the combination or separation between the two, so that the intermediate-stage speed-changing wheel 11 and the intermediate-stage speed-changing small wheel 12 are combined or separated. It should be noted that when the protrusion 121 is combined with the second groove 111, that is, the intermediate speed changing wheel 11 is combined with the intermediate speed changing small wheel 12, at this time, the intermediate speed changing wheel 11 and the intermediate speed changing small wheel 12 will drive each other to rotate, that is, the rotation of the intermediate speed changing wheel 11 will drive the intermediate speed changing small wheel 12 to rotate, and the rotation of the intermediate speed changing small wheel 12 will also drive the intermediate speed changing wheel 11 to rotate. When the protrusion 121 and the second groove 111 are separated, that is, the intermediate speed changing wheel 11 and the intermediate speed changing small wheel 12 are separated, the intermediate speed changing wheel 11 and the intermediate speed changing small wheel 12 have no influence on each other.
In this embodiment, referring to fig. 4, auxiliary sliding grooves 112 are disposed on two sides of the second groove 111, and the auxiliary sliding grooves 112 are used for the auxiliary protrusions 121 to extend into the second groove 111. The intermediate speed changing wheel 11 gradually approaches the intermediate speed changing small wheel 12 under the driving of the emergency assembly, when the intermediate speed changing wheel 11 just contacts the intermediate speed changing small wheel 12, the position of the protrusion 121 may not be just opposite to the position of the second groove 111, the protrusion 121 may contact the auxiliary chute 112 first, the auxiliary chute 112 is provided with a certain gradient, the intermediate speed changing wheel 11 then moves towards the intermediate speed changing small wheel 12, and the protrusion 121 gradually slides from the auxiliary chute 112 to the second groove 111, so as to extend into the second groove 111. Preferably, the end edges of the adjacent auxiliary sliding grooves 112 are arranged tangentially, and the protrusions 121 can extend into the second grooves 111 no matter how the intermediate speed changing wheel 11 and the intermediate speed changing small wheel 12 rotate, so that the clutch cannot fail.
Further, referring to fig. 3, the protrusion 121 is provided with a frustum 1211 corresponding to the auxiliary chute 112, and the slope of the frustum 1211 corresponds to the slope of the auxiliary chute 112, so as to facilitate the protrusion 121 sliding from the auxiliary chute 112 to the second groove 111. Of course, the slope of the frustum 1211 is not limited, and the auxiliary protrusion 121 can slide from the auxiliary chute 112 to the second recess 111.
Still further, referring to fig. 5 and 6, the clutch lever 21 is fixed on the gearbox body 10 by a screw 28, the clutch assembly further comprises a first clutch spring 27 coaxially fixed with the intermediate speed changing wheel 11, and a common shaft thereof is fixed on the gearbox, the shaft is a clutch shaft, the intermediate speed changing wheel 11 and the first clutch spring 27 only move on the clutch shaft, and the first clutch spring 27 is arranged between the intermediate speed changing wheel 11 and the clutch shaft or a cover plate of the gearbox body 10; specifically, referring to fig. 5, the first clutch spring 27 is sleeved on the clutch shaft, and one end of the first clutch spring 27 abuts against the clutch lever 21, and the other end abuts against the intermediate speed change wheel 11. In view of the stroke problem, one end of the transmission body 10 is provided to protrude, and the clutch shaft is lengthened. When the emergency assembly does not press one end of the clutch lever 21, that is, the clutch gear 22 does not rotate, one end of the clutch lever 21 is located in the first groove 221, the clutch lever 21 is in a stable state, and the first clutch spring 27 is in a compressed state, so that a certain elastic force is given to the intermediate-stage gearbox wheel 11, and the intermediate-stage gearbox wheel 11 and the intermediate-stage gearbox small wheel 12 are combined.
Still further, referring to fig. 6, the top end of the intermediate speed changing wheel 11 is provided with an extension 111, one end of the clutch lever 21 abuts against the extension 111, when the emergency assembly presses down one end of the clutch lever 21, that is, when the clutch gear 22 rotates, one end of the clutch lever 21 receiving the pressing force descends, the other end not receiving the pressing force ascends, and the extension 111 is tilted, so that the intermediate speed changing wheel 11 ascends and is separated from the intermediate speed changing small wheel. Of course, the intermediate speed changing wheel 11 may not be provided with the extension 111, and the clutch lever 21 directly abuts against the main body of the intermediate speed changing wheel 11, and drives the intermediate speed changing wheel 11 to rise together during the rising process. In summary, the intermediate speed change wheel 11 and the intermediate speed change small wheel 12 realize clutch operation.
Alternatively, referring to fig. 1 and 2, the clutch lever 21 is fixed on the gearbox body 10 by a screw 25, the clutch assembly further comprises a torsion spring 23 and a second clutch spring 24 coaxially fixed with the intermediate speed changing wheel 11 and located in the intermediate speed changing wheel 11, one end of the torsion spring 23 abuts against the clutch lever 21, and the torsion spring 23 is fixed on the gearbox by a screw 26. When the emergency assembly does not press down the clutch lever 21, that is, the clutch gear 22 does not rotate, one end of the clutch lever 21 is located in the first groove 221, the clutch lever 21 is in a stable state, the torsion spring 23 is in a force storage state, the second clutch spring 24 is in a compression state, and the force of the torsion spring 23 is larger than that of the second clutch spring 24, so that the intermediate speed change wheel 11 and the intermediate speed change small wheel 12 are combined. When the emergency assembly presses down the clutch lever 21, one end of the clutch lever 21, which is subjected to the pressing force, is lowered, the other end of the clutch lever, which is not subjected to the pressing force, is raised, the torsion spring 23 is given an acting force, the torsion spring 23 is in a releasing state, the second clutch spring 24 is converted into a releasing state, and under the action of the elastic force of the second clutch spring 24, the intermediate speed change wheel 11 is raised and is separated from the intermediate speed change small wheel 12. In summary, the intermediate speed change wheel 11 and the intermediate speed change small wheel 12 realize clutch operation.
Of course, the emergency gearbox may also be less complex, for example, the emergency assembly is only provided with an extrusion piece, the clutch lever 21 is fixedly connected with the intermediate speed change wheel 11, one end of the clutch lever 21 is extruded by the extrusion piece, the extrusion piece is matched with the clutch lever 21, so that one end of the clutch lever 21 can be driven to descend, and the other end of the clutch lever 21 is lifted to lift the intermediate speed change wheel 11.
In this embodiment, referring to fig. 1, the automatic power input gear set includes a gear assembly, a worm 32, and a worm wheel 33 meshed with the worm 32, where the gear assembly is provided with a front-stage gearbox wheel 34 coaxially fixed with the worm wheel 33 and meshed with the middle-stage gearbox wheel 11, when the protrusion 121 is combined with the second groove 111, the motor 31 drives the worm 32 to rotate, the worm 32 drives the worm wheel 33 to rotate, the worm wheel 33 drives the front-stage gearbox wheel 34 to rotate, the front-stage gearbox wheel 34 drives the middle-stage gearbox wheel 11 to rotate, the middle-stage gearbox wheel 11 drives the middle-stage gearbox wheel 12 to rotate, and the middle-stage gearbox wheel 12 drives the power output gear set to output power to drive the lock to unlock. Preferably, the height of the front-stage gearbox wheel 34 is greater than or equal to the stroke of the intermediate-stage gearbox wheel 11 in the clutch process, so that the front-stage gearbox wheel 34 and the intermediate-stage gearbox wheel 11 are always in a meshed state, and the situation that the intermediate-stage gearbox wheel 11 cannot be restored to the meshed state with the front-stage gearbox wheel 34 when the intermediate-stage gearbox wheel 11 is combined after being separated from the intermediate-stage gearbox small wheel 12 is avoided.
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.
Claims (8)
1. The utility model provides an emergent gearbox, includes gearbox body, power take off gear train, locates the automatic power input gear train of motor drive in the gearbox body and establishes the clutch pack between power take off gear train and automatic power input gear train, its characterized in that: the emergency gearbox further comprises an emergency knob, a clutch matching piece and a driving gear, wherein the clutch matching piece is connected with the emergency knob, and when the clutch matching piece rotates along with the emergency knob, the clutch matching piece can drive the clutch assembly to be in a separated or combined state; the driving gear comprises a meshing zone meshed with the power output gear set and a clearance zone disengaged from the power output gear set; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, the clutch matching piece drives the clutch assembly to be in a separation state; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch assembly to be in a combined state;
the clutch matching piece is provided with a first groove;
the clutch assembly comprises a clutch rod, a medium-stage speed changing wheel arranged at one end of the clutch rod and a medium-stage speed changing small wheel coaxially arranged with the medium-stage speed changing wheel, when the emergency knob drives the clutch matching piece to rotate, one end of the clutch rod descends, the other end of the clutch rod ascends, and the medium-stage speed changing wheel is separated from the medium-stage speed changing small wheel; when one end of the clutch lever is positioned in the first groove, the intermediate speed change wheel is combined with the intermediate speed change small wheel;
the clutch fitting is a clutch gear.
2. The emergency gearbox of claim 1, wherein: the middle-stage speed-changing wheel is provided with a bulge, the middle-stage speed-changing small wheel is provided with a second groove which is combined with or separated from the bulge under the driving of the emergency component, or the middle-stage speed-changing small wheel is provided with a bulge, and the middle-stage speed-changing wheel is provided with a second groove which is combined with or separated from the bulge under the driving of the emergency component.
3. The emergency gearbox of claim 2, wherein: auxiliary sliding grooves are formed in two sides of the second groove, and end edges of adjacent auxiliary sliding grooves are tangentially arranged.
4. An emergency gearbox according to claim 3, characterised in that: the boss is provided with a frustum.
5. The emergency gearbox of any one of claims 1 to 4, wherein: the clutch assembly further comprises a first clutch spring used for pressing down the intermediate speed changing wheel, a shaft sleeved by the intermediate speed changing wheel is a clutch shaft, and the first clutch spring is arranged between the intermediate speed changing wheel and the clutch shaft or a cover plate of the gearbox body; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch rod to be in a stable state, the first clutch spring presses the intermediate speed changing wheel, and the intermediate speed changing wheel and the intermediate speed changing small wheel are combined.
6. The emergency gearbox of claim 5, wherein: one end of the intermediate speed change wheel is provided with an extension part, and one end of the clutch lever is abutted against the extension part; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, the clutch matching piece drives one end of the clutch rod to descend, the other end of the clutch rod ascends, and the extending part is tilted to separate the intermediate speed changing wheel from the intermediate speed changing small wheel.
7. The emergency gearbox of any one of claims 1 to 4, wherein: the clutch assembly further comprises a torsion spring and a second clutch spring coaxially arranged with the intermediate speed changing wheel, and one end of the torsion spring is abutted against the clutch lever; when the driving gear rotates along with the emergency knob to be disengaged from the power output gear set, the clutch matching piece drives the clutch rod to be in a stable state, the torsion spring is in a force storage state, and the second clutch spring is in a compression state, so that the intermediate speed change wheel and the intermediate speed change pinion are combined; when the driving gear rotates along with the emergency knob to be meshed with the power output gear set, one end of the clutch lever is driven by the clutch matching piece to descend, the other end of the clutch lever is driven by the clutch matching piece to ascend, the torsion spring is in a releasing state, and the second clutch spring is in a releasing state, so that the intermediate speed change wheel and the intermediate speed change small wheel are arranged in a separated mode.
8. The emergency gearbox of claim 1, wherein: the automatic power input gear set comprises a gear assembly, a worm and a worm wheel meshed with the worm, wherein the gear assembly is provided with a front-stage speed changing wheel which is coaxially fixedly arranged with the worm wheel and meshed with a middle-stage speed changing wheel, and the height of the front-stage speed changing wheel is larger than or equal to the stroke of the middle-stage speed changing wheel in the clutch process.
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| CN201811265795.3A CN109253214B (en) | 2018-10-29 | 2018-10-29 | Emergency gearbox |
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| CN201811265795.3A CN109253214B (en) | 2018-10-29 | 2018-10-29 | Emergency gearbox |
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| CN109253214A CN109253214A (en) | 2019-01-22 |
| CN109253214B true CN109253214B (en) | 2023-09-08 |
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| CN201811265795.3A Active CN109253214B (en) | 2018-10-29 | 2018-10-29 | Emergency gearbox |
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Families Citing this family (1)
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| CN110159088B (en) * | 2019-07-05 | 2021-02-09 | 江苏亚亚门业集团有限公司 | Clutch transmission device of electronic lock body |
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