Clutch device for lock
Technical Field
The utility model relates to a clutch for lock.
Background
Along with the development of locksets, in order to make things convenient for people to get in and out of a door, the door lock is provided with a handle linked with a lock body, and in order to prevent burglary, people need to set up a clutch device for the lock between the lock body and the handle. The clutch device structure adopted by the existing partial lock body is shown in attached figures 1 and 2, the clutch device comprises a clutch seat 1 and a rotor 3, the clutch seat 1 is fixedly connected with an outdoor handle and is provided with a clutch pin 21, the rotor 3 is rotatably arranged on the clutch seat 1, the clutch pin 3 can be inserted into or withdrawn from the rotor 3, when the clutch pin 21 is inserted into the rotor 3, the rotor 3 synchronously rotates along with the clutch seat 1, and the handle can be used for opening or closing a door; when the clutch pin 21 is withdrawn from the rotor 3, the rotor 3 and the clutch base 1 can rotate relatively, and when the handle is acted, the handle can only idle, so that the anti-theft purpose is realized.
In the existing structure, the clutch pin is inserted into the reversing rotor by the pushing of the pushing mechanism, and exits from the reversing rotor under the action of the clutch pin spring, so that when the clutch pin is used normally, the clutch device is vibrated by beating the lock body, the clutch pin can be inserted into the reversing rotor under the action of the clutch pin spring in the vibrating process, the unique condition that the reversing rotor can only be inserted by the pushing of the pushing mechanism cannot be ensured, the possibility of technical unlocking exists, therefore, the anti-theft function of the existing structure has defects, and the existing clutch device for locking has the need of improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure avoids making clutch produce the vibration through patting the lock body, and the separation and reunion round pin is overcome under the effect of separation and reunion round pin spring at the in-process of vibration and is inserted the switching-over rotor and by the possible clutch for lock that technical unblanked.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a clutch device for lock, including separation and reunion seat and rotor, the separation and reunion seat is provided with separation and reunion round pin and separation and reunion round pin spring, the separation and reunion round pin can insert or withdraw from the rotor, the separation and reunion round pin inserts the rotor and makes the rotor follow separation and reunion seat synchronous revolution, the separation and reunion round pin withdraws from the rotor and makes rotor and separation and reunion seat can rotate relatively under the effect of separation and reunion round pin spring, a serial communication port, the separation and reunion seat still is provided with shockproof round pin, first reset spring and piece, when shockproof round pin and separation and reunion round pin overcome the effect synchronous motion of the first reset spring that corresponds separately and separation and reunion round.
The utility model has the advantages of when external force patts lock body or other modes make clutch produce the vibration, separation and reunion round pin and shockproof round pin overcome separation and reunion round pin spring and first reset spring's effect synchronous movement respectively simultaneously, and the shockproof round pin effect is blockked the piece and is made to block and prevent the separation and reunion round pin to continue to remove and insert the rotor, has avoided the possible circumstances by technical unblanking from this.
The utility model discloses the accessible improves with following scheme:
the clutch seat is provided with a pivot hole with a central shaft coaxial with the rotating central shaft of the clutch seat, and the rotor is rotatably arranged in the pivot hole; the clutch seat is provided with a slideway, a first guide channel and a second guide channel which are arranged side by side and have a distance, the first guide channel is arranged along the radial direction of the pin joint hole, the first end of the slideway is communicated with the first guide channel, the second end of the slideway is communicated with the second guide channel, and the slideway is obliquely arranged to enable the first end to be closer to the center of the pin joint hole than the second end; the clutch pin is sleeved with the clutch pin spring and then can move in the first guide channel along the axial direction of the first guide channel, the shockproof pin is sleeved with the first return spring and then can move in the second guide channel along the axial direction of the second guide channel, and the blocking piece can be movably arranged in the slideway along the axial direction of the slideway; and the shockproof pin is also provided with an acting part, and when the shockproof pin moves towards the direction close to the pivot hole along the axial direction of the second guide channel, the acting part acts on the blocking piece to enable the blocking piece to slide along the slide way to enter the first guide channel so as to prevent the clutch pin from moving towards the direction close to the pivot hole.
When external force is used for beating the lock body or the clutch device is vibrated by other modes, the clutch pin and the shockproof pin synchronously move towards the direction close to the pivot hole by overcoming the action of the clutch pin spring and the first return spring respectively, the action part acts on the blocking piece to enable the blocking piece to slide along the slideway and enter the first guide channel to prevent the clutch pin from being continuously movably inserted into the rotor towards the direction close to the pivot hole, so that the possibility of technical unlocking is avoided from moving towards the direction close to the pivot hole,
the blocking piece is a sphere, the acting part bulge is formed on the outer peripheral wall of one end of the shockproof pin, which is far away from the pivot hole, a pressing part is further arranged on the outer peripheral wall of one end of the shockproof pin, which is far away from the pivot hole, one end of the first return spring is pressed against one end of the second guide channel, which is close to the pivot hole, and the other end of the first return spring is pressed against the pressing part; a butting part is formed on the peripheral wall of one end of the clutch pin, which is far away from the pivoting hole, one end of the clutch pin spring butts against one end of the first guide channel, which is close to the pivoting hole, and the other end of the clutch pin spring butts against the butting part; when the blocking piece enters the first guide channel to prevent the clutch pin from moving in the direction close to the pivot hole, the blocking piece is abutted against the abutting portion.
When the clutch pin is withdrawn from the rotor and the clutch pin is not overcome to the action of the clutch pin spring to form a motion state of being inserted into the rotor, the butting part is far away from the center of the pin-joint hole than the action part in the longitudinal direction.
The transverse distance of the blocking piece entering the first end of the slide way from the second end of the slide way is smaller than the longitudinal distance between the abutting part and the action part.
The clutch pin, the clutch pin spring, the shockproof pin, the first reset spring and the blocking piece form assemblies, the clutch seat is provided with two groups of assemblies, the two groups of assemblies are respectively arranged on two opposite sides of a rotating central shaft of the clutch seat, and the central shafts of the clutch pins of the two groups of assemblies are coaxial and are in the longitudinal direction when the clutch pin is installed and used.
The clutch device for the lock further comprises a base and a pushing mechanism, the clutch seat and the rotor are rotatably arranged on the base, and the clutch pin is pushed by the pushing mechanism to be inserted into the rotor.
The pushing mechanism comprises a motor which is installed and fixed on the base, the motor is connected with a push plate through a speed reducing mechanism, the push plate is an arc-shaped plate with a central shaft coaxial with a rotating central shaft of the clutch base, and the push plate moves downwards in the longitudinal direction under the action of the motor.
The separation and reunion seat passes through the bearing and rotationally installs on the base, is provided with second reset spring between separation and reunion seat and base, and separation and reunion seat side sets up and stretches out the outside handle head of base along its axis of rotation axial extension, the first handle of installing of handle.
The clutch seat is formed by combining a clutch base and a clutch cover.
Drawings
Fig. 1 is a schematic diagram of the overall three-dimensional structure of the clutch device for the lock.
FIG. 2 is a schematic cross-sectional view of a prior art clutch device for a lock;
fig. 3 is a schematic sectional view showing the clutch device for the lock in the embodiment (the clutch pin is withdrawn from the rotor by the clutch pin spring and the rotor and the clutch base can rotate relatively).
Fig. 4 is a schematic sectional view showing the structure of the clutch device for the lock according to the embodiment (when the clutch device is vibrated by the external force applied to the lock body or by other means, the clutch pin and the damper pin are moved toward the pivot hole against the action of the clutch pin spring and the first return spring, respectively, and the blocking member enters the first guide passage to block the movement of the clutch pin toward the pivot hole).
Fig. 5 is a schematic view of the enlarged structure of I in fig. 3.
FIG. 6 is an enlarged view of II in FIG. 4
FIG. 7 is a schematic structural view of the lock clutch device in an exploded state in the embodiment.
Detailed Description
As shown in fig. 1, 3 to 7, the clutch device for the lock comprises a clutch base 1 and a rotor 3, and more specifically, the clutch device for the lock further comprises a base 5 and a pushing mechanism 6.
The clutch seat 1 is formed by combining a clutch base 11 and a clutch cover 12, and the clutch seat 1 and the rotor 3 are rotatably arranged on the base 5. The clutch seat 1 is rotatably installed on the base 5 through a bearing 81, a second reset spring 82 is arranged between the clutch seat 1 and the base 5, one side face of the clutch seat 1 extends axially along a rotating shaft of the clutch seat and extends out of a handle head 13 outside the base 5, and the handle head 13 is connected with a handle. The rotor 3 is provided along its radial direction with an insertion hole into which or from which the clutch pin 21 described below is inserted or withdrawn.
The clutch seat 1 is provided with a clutch pin 21 and a clutch pin spring 22, the clutch pin 21 can be inserted into or withdrawn from the rotor 3, the clutch pin 21 is inserted into the rotor 3 to enable the rotor 3 to synchronously rotate along with the clutch seat 1, and the clutch pin 21 is withdrawn from the rotor 3 under the action of the clutch pin spring 22 to enable the rotor 3 and the clutch seat 1 to relatively rotate.
The clutch seat 1 is also provided with a shock-proof pin 41, a first return spring 42 and a blocking element 43, the shock-proof pin 41 being correspondingly set to the same movement state as the clutch pin 21 against the action of the first return spring 42 when the clutch pin 21 is withdrawn from the rotor 3 and the clutch pin 21 is set to the movement state of insertion into the rotor 3 against the action of the clutch pin spring 22, and the blocking element 43 being actuated so that the blocking element 43 prevents the insertion of the clutch pin 21 into the rotor 3.
The clutch seat 1 is further provided with a shockproof pin 41, a first return spring 42 and a blocking piece 43, when the clutch pin 21 exits from the rotor 3 and is in a static state, and when the lock body is tapped by external force or the clutch device is vibrated by other modes, the shockproof pin 41 and the clutch pin 21 can overcome the action of the corresponding first return spring 42 and the clutch pin spring 22 to synchronously move, the shockproof pin 41 acts on the blocking piece 43 to enable the blocking piece 43 to prevent the clutch pin 21 from continuously moving and inserting into the rotor 3 (namely, the clutch pin 21 is prevented from inserting into the rotor), thereby avoiding the possible situation of technical unlocking
Specifically, clutch seat 1 has a pivot hole 14 with a central axis coaxial with the central axis of rotation of clutch seat 1, and rotor 3 is rotatably mounted in pivot hole 14; the clutch seat 1 is provided with a slideway 15, a first guide channel 16 and a second guide channel 17 which are arranged side by side and have a distance, the first guide channel 16 is arranged along the radial direction of the pivot hole 14, the first end of the slideway 15 is communicated with the first guide channel 16, the second end of the slideway 15 is communicated with the second guide channel 17, and the slideway 15 is obliquely arranged to enable the first end to be closer to the center of the pivot hole 14 than the second end; the clutch pin 21 can move in the first guide channel 16 along the axial direction of the first guide channel 16 after being sleeved with the clutch pin spring 22, the shockproof pin 41 can move in the second guide channel 17 along the axial direction of the second guide channel 17 after being sleeved with the first return spring 42, and the blocking piece 43 can move in the slideway 15 along the axial direction of the slideway 15; the damper pin 41 is further provided with an acting portion 44, and when the damper pin 41 moves in the direction approaching the pivot hole 14 along the axial direction of the second guide passage 17, the acting portion 44 acts on the blocking member 43 to slide along the slide passage 15 into the first guide passage 16 to block the movement of the clutch pin 21 in the direction approaching the pivot hole 14.
More specifically, the blocking member 43 is a sphere, the acting portion 44 is convexly formed on an outer peripheral wall of one end of the shock-proof pin 41 away from the pivot hole 14, a pressing portion 45 is further arranged on the outer peripheral wall of one end of the shock-proof pin 41 away from the pivot hole 14, one end of the first return spring 42 abuts against one end of the second guide channel 17 close to the pivot hole 14, and the other end of the first return spring 42 abuts against the pressing portion 45; an abutting part 23 is formed on the peripheral wall of one end of the clutch pin 21 far away from the pivot hole 14, one end of the clutch pin spring 22 abuts against one end of the first guide channel 16 close to the pivot hole 14, and the other end of the clutch pin spring 22 abuts against the abutting part 23; when the blocking member 43 enters the first guide channel 16 to prevent the clutch pin 21 from moving toward the pivot hole 14, the blocking member 43 abuts against the abutting portion 23.
When external force is applied to the lock body or the clutch device is vibrated by other means, the clutch pin 21 and the shockproof pin 41 move towards the direction close to the pivot hole 14 against the action of the clutch pin spring 22 and the first return spring 42, respectively, the action part 44 acts on the blocking piece 43 to slide along the slide way 15 into the first guide channel 16 to prevent the clutch pin 21 from moving towards the direction close to the pivot hole 14, thereby avoiding the possibility of technical unlocking, and in the longitudinal direction, the abutting part 23 is far away from the center of the pivot hole 14 than the action part 44, the transverse distance of the blocking piece 43 entering the first end of the slide way 15 from the second end of the slide way 15 is smaller than the longitudinal distance of the abutting part 23 and the action part 44, so that the clutch pin 21 and the shockproof pin 41 move towards the direction close to the pivot hole 14 simultaneously, and the blocking piece 43 can enter the first guide channel 16 to prevent the clutch pin 21 from moving towards the direction close to the pivot, the insertion of the clutch pin 21 into the rotor 3 during shocks is avoided.
In order to facilitate the installation of a left-hand door or a right-hand door, the direction of the clutch base 1 needs to be adjusted according to actual conditions, therefore, the clutch pin 21, the clutch pin spring 22, the shockproof pin 41, the first return spring 42 and the blocking piece 43 form assemblies, the clutch base 1 is provided with two sets of the assemblies, the two sets of the assemblies are respectively arranged on two opposite sides of a rotating central shaft of the clutch base 1, and when the clutch base is installed and used, the central shafts of the clutch pins 21 of the two sets of the assemblies are coaxial and are in the longitudinal direction. Normally, in the upper group of said assemblies, under the action of gravity, the blocking member 43 will be in the first guide channel 16, always blocking the movement of the clutch pin 21 towards the direction of continued approach to the pivoting hole 14.
Clutch pin 21 is inserted in rotor 3 through the promotion of pushing mechanism 6, and pushing mechanism 6 includes motor 61 of installation fixing on base 5, and motor 61 is connected with push pedal 62 through reduction gears, and push pedal 62 is the coaxial arc of center pin and clutch seat 1 rotation center pin, and push pedal 62 is down motion in vertical under the effect of motor 61. The arc-shaped arrangement of the push plate 62 can realize that the push plate 62 can always act on the clutch pin 21 when the clutch seat 1 rotates.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.