CN110670948A

CN110670948A - Unlocking device for controlling rear clutch by lock with fixed front lock cylinder

Info

Publication number: CN110670948A
Application number: CN201910961730.0A
Authority: CN
Inventors: 颜群
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-01-10

Abstract

A lock head with a front lock cylinder fixed for controlling a rear clutch comprises a front panel, a handle shaft and a lock head with a lock cylinder fixed, wherein the inner side of the front panel is provided with the lock head with the lock cylinder fixed, one end of the handle shaft is provided with a door opening handle and a handle return spring, the other end of the handle shaft is provided with a rod mounting end, and the handle shaft is also provided with a cam capable of placing a sliding part in the lock head with the lock cylinder fixed in a locking position; the method is characterized in that: the sliding piece is also provided with a rack, the inner side of the front panel is provided with a gear which can be driven by the rack to rotate, and the gear is provided with a control stick insertion hole for inserting and controlling the locking head arranged at the inner side of the rear panel to be separated from and connected with the locking platform. The invention has simple structure, can be conveniently installed and used, ensures the precision and the use reliability of products, greatly improves the functions of preventing the master key of the intelligent lockset with a rear clutch from being opened and preventing the lock cylinder from being opened by violence damage, and can be widely used in the field of intelligent door locks, such as: security doors, safes, etc.

Description

Unlocking device for controlling rear clutch by lock with fixed front lock cylinder

Technical Field

The invention relates to an unlocking device for controlling a rear clutch by a lock head in the field of intelligent door locks, which comprises the following steps: a lock with a fixed front lock core controls the unlocking device of a rear clutch.

Background

In the field of intelligent locks, in order to enhance the anti-magnetic and anti-theft performance thereof, a force clutch driven by a motor or electromagnetically or pulled by a heat-shrinkable metal wire is arranged at the inner side of a rear panel of a lockset, and the force clutch is used for controlling a locking spring pin arranged at the inner side of the rear panel to be separated from a handle locking wheel so as to realize the function of rotating and unlocking a door opening handle. Generally, a force clutch provided inside the rear panel, a spring pin fixed to the rear panel, and a lock wheel provided on the rear handle shaft are collectively referred to as a rear clutch or a rear clutch device. The lock body and the door body are arranged between the lock head and the rear clutch at intervals, so that the lock head arranged at present cannot directly or indirectly act on the rear clutch to realize the unlocking function of rotating the door opening handle, and the lock head drives the lock core hoist liner to drive the lock body lock tongue to realize the unlocking function at present. Especially, the lock head which is arranged in the front panel and can prevent the master key and the lock cylinder from being opened by violence damage is fixed, and a technology which can adopt the preposed lock head to control the postposition clutch to realize the rotation of the door opening handle to realize the unlocking is needed.

The invention can provide a device for controlling a handle clutch arranged on the inner side of a rear panel to realize that a door opening handle drives a lock body to unlock by adopting a lock head with a fixed lock cylinder arranged on the inner side of a front door panel. The invention has simple structure, can be conveniently installed and used, improves the use accuracy, can greatly improve the functions of preventing the master key of the intelligent lockset with the rear clutch from being opened and preventing the lock core from being destroyed by violence, and can be widely used in the field of intelligent locksets required by doors, such as: security doors, safes, etc.

Disclosure of Invention

In order to achieve the purpose, the invention discloses a technical scheme of a lock head with a fixed front lock cylinder for controlling an unlocking device of a rear clutch, which comprises the following steps: the lock comprises a front panel, a handle shaft and a lock head with a fixed lock core, wherein the lock head with the fixed lock core is arranged on the inner side of the front panel, a door opening handle is arranged at one end of the handle shaft, a rod mounting end is arranged at the other end of the handle shaft, a handle return spring is arranged between the handle shaft and the front panel, and a cam capable of placing the lock head with the fixed lock core in a locking position is also arranged on the handle shaft between the rod mounting end and the handle return spring; the lock with the immovable lock core comprises the lock core, a sliding part and a lock unlocking spring, wherein the sliding part is provided with a stress column which can be pushed by a cam to move the sliding part at a locking position, and the lock is characterized in that: the sliding piece is also provided with a rack, the inner side of the front panel is provided with a gear which can be driven by the rack to rotate, and the gear is provided with a control stick insertion hole for inserting and controlling the locking head arranged at the inner side of the rear panel to be separated from and connected with the locking platform.

The control rod is arranged in the control rod insertion hole, the inner side of the rear panel is provided with a rotating wheel, the rotating wheel is provided with a rod insertion groove into which the control rod can be inserted, and the rotating wheel is also provided with a pressure point which can push a locking head in the locking spring pin or push a push rod in the driving clutch along with the rotation of the control rod to enable the locking head to be separated from the locking platform.

The key groove of the lock is parallel to the axial line of the handle shaft, or the key groove of the lock is vertical to the axial line of the handle shaft.

The outer side of the gear is provided with a protective cover for protecting the control stick from illegal damage.

Description of the drawings:

the invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic diagram of an overall schematic structure of an embodiment of the present invention placed several tens of degrees counter-clockwise.

Fig. 2 is a schematic structural diagram of another embodiment of the present invention.

Fig. 3 is a schematic view of a structure in the direction of a-a in fig. 2.

In the figure: 1. handle shaft, 11, handle mounting end, 12, stick mounting end, 15, annular groove, 16, door opening handle, 17, unlocking stick, 18, cam, 19, finger press button, 10, hollow bolt, 101, rear handle shaft, 111, rear handle mounting end, 102, rear stick mounting end, 106, rear door opening handle, 2, handle return wheel, 21, pressure arm, 22, handle return spring, 23, groove, 24, protrusion, 201, rear handle return spring, 211, rear pressure arm, 222, rear handle return spring, 3, handle locking wheel, 31, locking table, 33, taper spring, 34, limit table, 35, thrust ball, 36, thrust ball slide, 38, thrust ball spring, 39, taper button, 30, taper slide, 4, locking spring pin, 41, locking head, 42, locking pin spring, 43, unlocking action point, 40, locking pin groove, 5. the mechanical force clutch comprises a force clutch body, 51 push rods, 52 rotating wheels, 53 rod slots, 54 pressure points, 6 bottom shells, 62 spring slots, 60 rod mounting rotating holes, 7 outer cover shells, 71 upper clamping plates, 72 lower clamping plates, 70 end mounting rotating holes, 8 lock heads, 80 lock head shells, 81 sliding pieces, 82 lock cylinders, 83 lock head unlocking springs, 84 lock side columns, 85 stress columns, 86 racks, 87 side column marbles, 88 key slots, 89 side column marble springs, 9 lock bodies, 91 front panels, 92 rear panels, 93 lock bodies, 94 through holes, 95 protective covers, 96 gears, 97 control rods and 98 control rod jacks.

Detailed Description

As shown in fig. 1, 2 and 3, the drawings include: the lock comprises a front panel 91, a handle shaft 1 and a lock 8 with a fixed lock core, wherein the lock 8 with the fixed lock core is arranged on the inner side of the front panel, a door opening handle 16 is arranged at one end of the handle shaft, a rod mounting end 12 is arranged at the other end of the handle shaft, a handle return spring 22 is arranged between the handle shaft 1 and the front panel 91, and a cam 18 capable of placing the lock 8 with the fixed lock core in a locking position is also arranged on the handle shaft 1 between the rod mounting end 12 and the handle return spring 22; the lock head 8 with the immovable lock core comprises a lock core 82, a sliding part 81 and a lock head unlocking spring 83, wherein the sliding part 81 is provided with a stress column 85 which can be pushed by a cam 18 to push the sliding part 81 to be at a locking position, and the lock head is characterized in that: the slider 81 is further provided with a rack 86, a gear 96 which can be driven to rotate by the rack 86 is provided on the inner side of the front panel 91, and a control stick insertion hole 98 for inserting and controlling the locking head 41 provided on the inner side of the rear panel 92 to be disengaged from the locking table 31 is provided on the gear 96.

As shown in FIG. 1, a control stick 97 is provided in the control stick insertion hole 98, a turning wheel 52 is provided on the inner side of the rear panel 92, a stick insertion slot 53 for inserting the control stick 97 is provided on the turning wheel 52, and a pressure point 54 for pushing the locking head 41 of the locking spring pin 4 or the push rod 51 of the pushing clutch 5 to separate the locking head 41 from the locking table 31 is provided on the turning wheel 52 in accordance with the rotation of the control stick 97.

The key slot 88 of the lock cylinder 8 is parallel to the axis of the handle shaft 1, or the key slot 88 of the lock cylinder 8 is perpendicular to the axis of the handle shaft 1.

A protective cover 95 for protecting the control stick 97 from illegal damage is arranged outside the gear 96.

Front panel part embodiment

Referring to fig. 1 and 2, a handle shaft 1 having the structure shown in the figures can be manufactured by turning, milling and drilling technologies, and a handle mounting end 11 for mounting a door opening handle 16 is arranged at one end of the handle shaft 1, wherein the handle mounting end 11 can be arranged in a column shape as shown in the figures, can be arranged in a groove and screw hole shape as required for mounting the door opening handle 16, and can be arranged in a flange and screw hole shape as required for mounting the door opening handle 16. And the other end of the handle shaft 1 is provided with a stick mounting end 12 capable of mounting an unlocking stick 17, the stick mounting end 12 can be arranged into a groove shape with a square or rectangular or polygonal section according to the requirement of the lock body 93, and the installation and the use of the unlocking stick 17 can be conveniently realized. A handle return spring 22 is provided and mounted between the handle shaft 1 and the front panel 91. The handle return spring 22 can be installed and manufactured as shown in fig. 1 using a torsion spring. The handle return spring 22 can also be made as shown in fig. 2, using a compression spring. The handle return spring 22 can also be installed and manufactured by a tension spring (not shown). Referring to the installation and manufacture of the pressure spring in fig. 2, a lock capable of changing the installation direction of the door opening handle 1 is manufactured, a handle return wheel 2 with a rectangular rounded angle in section symmetrical to the axis of the handle shaft 1 is arranged between the handle installation end 11 and the rod installation end 12, a pressure arm 21 capable of being matched with two ends of the rectangular edge of the handle return wheel 2 is arranged at the outer edge of the handle return wheel 2, and a handle return spring 22 capable of enabling one side of the pressure arm 21 to be in pressure connection with the handle return wheel 2 is arranged at two ends of the pressure arm 21. The handle return spring 22 shown in the figure is a compression spring, and the handle return spring 22 can be set as a tension spring according to the requirement in actual manufacturing. In order to enable the handle lock return wheel 2 to operate stably, the handle return spring 22 may be disposed and mounted in the spring groove 62 in actual manufacture, and the spring groove 62 may be disposed on the inner side of the bottom case 6 or the outer cover case 7 as needed. A set of matching guide protrusions and guide grooves (not shown) may also be provided between the two sides of the saddle-shaped pressure arm 21 as in fig. 3 and its corresponding bottom shell 6 or upper and lower clamping plates 71, 72 in fig. 2. In order to further assist in positioning or resetting the door opening handle 16 or the handle shaft 1, in the actual manufacturing process, as shown in fig. 3, a groove 23 is formed in a central position of the outer edge of the handle resetting wheel 2, and a protrusion 24 capable of correspondingly matching with the groove 23 is formed on the pressure arm 21.

Referring to fig. 1 and 2, a cam 18 for locking the lock 8 with the lock cylinder fixed is disposed on the handle shaft 1 between the rod mounting end 12 and the handle return spring 22. The cam 18 can be manufactured together with the handle shaft 1, or can be separately manufactured and then installed into a whole by adopting a rivet welding process and technology.

Referring to fig. 1 and 2, a lock 8 with a fixed lock cylinder capable of correspondingly matching with the cam 18 is arranged and installed at a proper position on the inner side of the front panel 91. For convenience of illustration, the lock shown in fig. 1 is a cylindrical side column spring lock, and in practical application, any side column spring can be adopted to manufacture the lock with the fixed lock core according to requirements. All locks with a stationary lock cylinder with a sliding element can be adapted to the application of the invention. The plug 82 having the side post pins 87, side post pin springs 89 and locking side posts 84 can be mounted in the plug housing 80, and the slider 81 can be mounted in the plug housing 80 on the side of the plug 82 where the locking side posts 84 are located and the slider 81 can slide vertically relative to the plug keyway 88. A force-bearing column 85 capable of being pushed by the cam 18 to move the sliding member 81 to the locking position is further provided on the sliding member 81. In order to facilitate the cooperation between the force-bearing column 85 and the cam 18, the force-bearing column 85 can be made in the shape of a circular arc at the contact end with the cam 18, and the length of the force-bearing column 85 is such that the cam 18 can push the sliding member 81 to the locking position and facilitate the extraction of a key inserted in the lock cylinder 82. And a lock head unlocking spring 83 is arranged and installed on the sliding piece 81.

Referring to fig. 1 and 2, a rack 86 is further provided on the sliding member 81 of the lock head 8, and is capable of indirectly acting on the lock head 41 provided on the inner side of the rear panel 92 during the unlocking process of the sliding member 81. The specific setting of the locking head 8 and the rack 86 at the selected position inside the front panel 91 may be determined by the size of the lock body 93 selected or the relative positions of the through holes 94 on both sides of the lock body 93 used for installation with respect to the unlocking stick 17. For a lock body with a larger volume, a mounting hole for mounting the cylinder lock head can be selected as the through hole 94 of the lock body 93, and the through holes 94 can be additionally arranged on two sides of the lock body 93 according to requirements. For a miniature or small-sized lock body, a through hole is required to be formed in the lock body, and the control rod 97 can directly penetrate through the outside of the lock body and can ensure normal operation of the lock body.

Referring to fig. 1 and 2, a gear 96 is disposed on the inner side of the front panel 91 and can be driven by the rack 86 to rotate and can be aligned with the through holes 94 on the two sides of the lock body 93. The gear 96 can be disposed on the lock head housing 80 shown in fig. 1, or on the bottom housing 6 capable of fixedly mounting the lock head 8 or the handle shaft 1 shown in fig. 2, or the gear 96 can be disposed on a bottom cover (not shown) disposed on the bottom side of the front panel 91, as long as the gear 96 can be driven by the rack 86 to rotate and normally operate. The gear 96 is provided with a control stick insertion hole 98 for inserting and controlling the locking head 41 arranged on the inner side of the back panel 92 to be separated from and connected with the locking platform 31. The specific configuration of the control stick receptacle 98 hole cross-sectional geometry is described above with reference to the hole cross-sectional method of the stick mounting head 12.

In order to protect the control rod 97 and prevent an illegal unlocking person from utilizing the gap between the front panel 91 and the door body and using a sheet metal wrench to twist the control rod 97 to realize illegal unlocking, a protective cover 95 for protecting the control rod 97 from illegal damage is arranged and installed outside the gear 96 according to the invention shown in fig. 1 and 2.

In fig. 2, in order to prevent the door opening handle 16 from being shaken, an annular groove 15 concentric with the shaft is arranged on the handle shaft 1 between the handle return wheel 2 and the cam 18, and an upper clamping plate 71 and a lower clamping plate 72 which are composed of an upper half circular arc and a lower half circular arc and can be matched with the circular arc at the bottom side of the annular groove 15 and mutually fixed with the bottom shell 6 or the outer cover shell 7 are respectively arranged between the bottom shell 6 and the outer cover shell 7. In actual manufacturing, the annular groove 15 of the present invention can be formed by an annular groove formed by a gap between the handle return pulley 2 and the cam 18 as needed.

Rear panel section embodiments

Referring to fig. 1, a rear handle shaft 101 having the structure shown in fig. 1 can be manufactured by turning, milling and drilling, a rear handle mounting end 111 for mounting a rear door opening handle 106 is arranged at one end of the rear handle shaft 101, and the rear handle mounting end 111 can be arranged in a column shape or a column shape with a groove shape parallel to the shaft as shown in the figure. A rear rod mounting end 102 capable of mounting the unlocking rod 17 is arranged at the other end of the rear handle shaft 101, and the rear rod mounting end 102 can be arranged into a groove with a square groove shape, a rectangular groove shape or a polygonal groove shape in cross section according to the requirement of the lock body 93, so long as the installation and the use of the unlocking rod 17 are convenient. A rear handle return spring (not shown) is further installed between the inner side of the rear panel 92 and the rear handle shaft 101, and the specific arrangement of the rear handle return spring can be selected with reference to the arrangement of the handle return spring 22 between the front panel 91 and the handle shaft 1. Referring to fig. 1, a rear handle return wheel 201 having a rectangular shape with a rounded cross section symmetrical to the axis of the rear handle shaft 101 is disposed on the rear handle shaft 101 between the rear handle mounting end 111 and the rear stick mounting end 102, referring to the arrangement of the handle return spring 22 in fig. 2, a rear pressure arm capable of being matched with both ends of the rectangular side of the rear handle return wheel 201 is disposed at the outer edge of the rear handle return wheel 201 in fig. 1, and a rear handle return spring (not shown) capable of pressing one side of the rear pressure arm and the rear handle return wheel against each other is disposed at both ends of the rear pressure arm. The pressure spring of the rear handle return spring can be set as a tension spring, a torsion spring or a pressure spring according to requirements.

Referring to fig. 1, a handle locking wheel 3 is further disposed on one side of the rear handle return wheel 201, and the handle locking wheel 3 may be disposed on the left side or the right side of the rear handle return wheel 201 as needed, so that the installation direction of the rear door opening handle 106 can be conveniently changed and the lock body can be unlocked and locked when the lock is installed, and in the manufacturing process, the rear handle return wheel 201 and the handle locking wheel 3 may be disposed symmetrically to each other along a vertical axis of the rear handle shaft 101. The handle locking wheel 3 is provided with a locking platform 31 which can control the door opening handle 16 and the rear door opening handle 106 or the rear handle shaft 101 to rotate and unlock.

Referring to fig. 1, a locking spring pin 4 capable of matching with the locking platform 31 is further disposed and mounted on the inner side of the rear panel 92, and a locking pin sliding groove 40 and a locking head 41 disposed in the locking pin sliding groove 40 are further disposed in the locking spring pin 4. A locking pin spring 42 for assisting the movement of the locking head 41 into and out of the locking table 31 may be provided and installed on the outer side of the locking head 41 as required by the sliding direction of the locking head 41. The locking pin spring 42 may be arranged to assist the movement of the locking head 41 into the locking table 31 or the movement of the locking head 41 out of the locking table 31, as required, and in fig. 1, the locking pin spring 42 is shown to assist the movement of the locking head 41 out of the locking table 31, and the specific arrangement and application may depend on the requirements of the actual application. In order to ensure the stability and reliability of the locking function, one end of the locking head 41 is engaged with the locking stage 31, and the other end of the locking head 41 is installed to be capable of moving back and forth with the push rod 51 of the clutch 5 into and out of the locking stage 31 during the manufacturing and installation.

Referring to fig. 1, a thrust ball 35 capable of pushing the locking head 41 to move out of the locking table 31 is further disposed on one side of the locking table 31 in the handle locking wheel 3, a thrust ball sliding groove 36 capable of leading from one side of the locking table 31 to the axis thereof is disposed in the handle locking wheel 3, and the thrust ball 35 and a thrust ball spring 38 are disposed and mounted in the thrust ball sliding groove 36. For convenience of manufacture, the thrust marble chute 36 can be milled from the end face of the rear handle shaft 101 by adopting a milling planning process and technology, and then the thrust marble 35 and the thrust marble spring 38 are encapsulated by adopting a marble cover plate and a screw or a cover plate and a welding technology.

Referring again to fig. 1, a wedge button 39 is provided in the rear handle shaft 101 as shown, which is perpendicular to the thrust pin 35 and acts on the thrust pin 35. In the figure, the front end of the taper button is a taper and the back end is a thin cylinder. In fig. 1, the wedge button 39 can penetrate through the rear handle return wheel 201, the handle locking wheel 3 and the wedge chute 30 at the axis of the rear handle mounting end 111, and the wedge chute 30 can be set to have a circular or rectangular inner cross section as required, so long as the wedge button 39 can be conveniently mounted and used.

Referring to fig. 1, a wedge spring 33 for assisting the reset of the wedge button 39 is further disposed and installed in the wedge chute 30, and the wedge button 39 is disposed to be interlocked with the finger-pressure button 19 for normal operation.

In order to facilitate the installation and connection of the rear door handle 106 and the rear handle mounting end 111 and the operation of the finger button 19, the present invention can also be seen from fig. 1, and a hollow bolt 10 for fixing the axial connection of the rear door handle mounting end 111 and the rear door handle 106 is installed between the two handles.

Referring to fig. 1, a control stick 97 is installed in the control stick insertion hole 98 and has a section matching with the hole, a rotating wheel 52 is installed inside the rear panel 92 and has a section matching with the control stick, a stick insertion slot 53 is installed on the rotating wheel 52 and can be inserted with the control stick 97, and a pressure point 54 is installed on the rotating wheel 52 and can push or push the locking head 41 of the locking spring pin 4 or the push rod 51 of the pushing clutch 5 to separate the locking head 41 from the locking platform 31 along with the rotation of the control stick 97. In fig. 1, the pressure point 54 can push or release the push rod 51 along with the rotation of the wheel 52; in practical application, the locking head 41 can be changed into a locking head which can be acted on by the pressure point 54 according to requirements, a sliding groove (not shown) which can be led to the lower end of the locking head 41 is arranged on the shell of the existing locking spring pin 4, a force bearing platform (not shown) which can be fixedly connected with the locking head 41 and can be acted on by the pressure point 54 is arranged in the sliding groove, and the force bearing platform can move the locking pin 41 out of the locking platform 31 along with the action of the pressure point 54.

When in use:

in daily use, when outdoor personnel want to realize illegal unlocking, the push rod 51 of the force clutch 5 can be extended according to the convention shown in fig. 1, the interaction between the locking head 41 and the locking platform 31 in the unlocking direction is blocked by pushing and keeping, and the door opening handle 16 and the rear door opening handle 106 cannot rotate in the unlocking direction, so that illegal unlocking can be prevented.

When indoor or outdoor personnel want to lock the door lock, although the push rod 51 of the clutch 5 is extended according to the conventional force, the interaction between the locking head 41 and the locking platform 31 in the locking direction of the lock is not blocked, and the door opening handle 16 and the rear door opening handle 106 can rotate in the locking direction of the lock body 93 to lock the lock.

When outdoor personnel normally carry out electronic key unlocking, the system sends an unlocking instruction to the force closing device 5, at the moment, the push rod 51 can be shortened and retracted according to the convention in figure 1, at the moment, under the action of the locking pin spring 42 or the pulling force of the push rod 51, the locking head 41 moves along with the push rod 51 to separate from the locking platform 31, at the moment, according to the convention, the door opening handle 16 and the rear door opening handle 106 can both rotate towards the unlocking direction, and the unlocking of the lockset is realized.

When the indoor personnel normally unlock the lock, at the same time, only the hand holds the back door opening handle 106, the thumb is used for pressing the finger pressing button 19 arranged in the back door opening handle 106, and the wedge button 39 is driven to act on the thrust marble 35, at the moment, the thrust marble 35 can push the locking head 41 to be separated from the locking platform 31 according to convention, and the back door opening handle 106 can rotate towards the unlocking direction, so that the lock is unlocked.

When an outdoor person inserts a key to unlock the lock normally, at the moment, the side column pin 87 is in an unlocking state under the action of a matched key, at the moment, the door opening handle 16 is lifted up or the door opening handle 16 is rotated according to the locking direction, so that the convex part of the cam 18 is contacted with the stressed column 85 according to the convention, the sliding piece 81 is pushed to move slightly towards the locking direction, the locking side column 84 loses the friction force generated by the lock head unlocking spring 83, the locking side column 84 can fall into the lock core 82, at the moment, the locking side column 84 is not clamped between the lock core 82 and the sliding piece 81, at the moment, the door opening handle 16 is rotated towards the unlocking direction, the stressed column 85 moves towards the concave part along with the convex part of the cam 18, the sliding piece 81 also vertically slides along with the stressed column 85 and the key groove 88, at the moment, according to the convention, the rack 86 also moves, and under the driving of the rack 86, the gear 96, the control rod 97 and the rotating wheel 52 are, at this point, pressure point 54 is engaged to move locking head 41 of locking spring pin 4 completely out of locking abutment 31, or as shown in fig. 1, pressure point 54 compresses push rod 51, so that locking head 41 follows the movement to disengage locking abutment 41, at the same time door opening handle 16 has moved towards the equilibrium position of handle return spring 22, at which point opening of lock body 93 is achieved if door opening handle 16 is continued to be rotated in the unlocking direction. During the unlocking process of the lock body 93, at this time, according to the convention, the other protruding portion of the cam 18 moves to and acts on the force-bearing column 85, so that the sliding member 81 is located at the locking position, and at the same time, the rack 86 is driven to drive the gear 96 to be linked with the control rod 97 and the rotating wheel 52, so that the pressure point 54 does not act on the locking head 41 or the push rod 51. When the lock body is unlocked, the sliding piece 81 is arranged at the locking position according to the convention set by the cam 18, and the lock head can be locked by pulling out the key before the door opening handle 16 is released. When the door opening handle 16 is released, the locking head 41 can be correspondingly matched with the locking platform 31 under the action of the built-in return spring of the force clutch 4 and the action of the handle return spring 22, so as to realize locking.

Since the sliding member 81, the rack 86, the gear 96, the control rod 97 and the pressure point 54 on the runner 52 are arranged to be integrally linked, the present invention can ensure the use accuracy and the reliability of the product.

The above embodiments of the invention are not intended to be limiting illustrations of the concepts and applications of the invention. While the invention has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or all or none of the technical features may be equivalently replaced; the modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention, and the technical solutions are all covered by the claims and the specification of the present invention.

Claims

1. An unlocking device of a lock head with a fixed front lock cylinder for controlling a rear clutch comprises: the lock comprises a front panel (91), a handle shaft (1) and a lock head (8) with a fixed lock cylinder, wherein the lock head (8) with the fixed lock cylinder is arranged on the inner side of the front panel, a door opening handle (16) is arranged at one end of the handle shaft (1), a rod mounting end (12) is arranged at the other end of the handle shaft (1), a handle reset spring (22) is arranged between the handle shaft (1) and the front panel (91), and a cam (18) capable of placing the lock head (8) with the fixed lock cylinder in a locking position is further arranged on the handle shaft (1) between the rod mounting end (12) and the handle reset spring (22); lock core immovable tapered end (8) include lock core (82), slider (81) and tapered end spring (83) of unblanking, be equipped with on slider (81) and can be promoted slider (81) in stress column (85) of locking position by cam (18), characterized by: a rack (86) is arranged on the sliding piece (81), a gear (96) which can be driven by the rack (86) to rotate is arranged on the inner side of the front panel (91), and a control stick insertion hole (98) which is used for inserting and controlling the locking head (41) arranged on the inner side of the rear panel (92) to be separated from and connected with the locking platform (31) is arranged on the gear (96).

2. The lock with the immovable front lock cylinder of claim 1 controls the unlocking device of the rear clutch, which is characterized in that: the control rod jack (98) is internally provided with a control rod (97), the inner side of the rear panel (92) is provided with a rotating wheel (52), the rotating wheel (52) is provided with a rod slot (53) into which the control rod (97) can be inserted, and the rotating wheel (52) is also provided with a pressure point (54) which can push a locking head (41) in the locking spring pin (4) or a push rod (51) in the pushing force clutch (5) along with the rotation of the control rod (97) to ensure that the locking head (41) is separated from the locking platform (31).

3. The lock head with the front lock cylinder fixed as claimed in claim 1 or 2 controls the unlocking device of the rear clutch, which is characterized in that: a protective cover (95) for protecting the control stick (97) from illegal damage is arranged on the outer side of the gear (96).

4. The lock head with the front lock cylinder fixed as claimed in claim 1 or 2 controls the unlocking device of the rear clutch, which is characterized in that: the key groove (88) of the lock head (8) is parallel to the axis of the handle shaft (1), or the key groove (88) of the lock head (8) is vertical to the axis of the handle shaft (1).