CN2675803Y - a combination lock - Google Patents

Abstract

A cipher lock is composed of lock box, lock bolt, motor, drive unit and cipher control circuit assembly, and features that the power input of motor is connected to the output of cipher control circuit assembly, and the lock bolt is a rigid square body with internal cavity. The utility model has the advantages of light structure, material saving and flexible spring bolt expansion; the transmission is stable and reliable, and the gear can be effectively prevented from being abraded; the mechanical unlocking and the password unlocking are organically integrated, so that the use is convenient; the automatic locking device is arranged, so that the locking is simple and convenient.

Description

a combination lock

technical field

The utility model relates to a lockset, in particular to a combination lock driven by a motor.

Background technique

The transmission device of the lock tongue is the executive mechanism of the entire lock. The expansion and contraction of the lock tongue determines the closed or open state of the lock. Generally, the lock tongue of the lock is driven by a toggle mechanism installed in the lock box. The toggle mechanism can It is electric or electromechanical. In the prior art, Chinese Patent No. ZL01262635.X discloses a new type of lock bolt transmission device. The technical scheme of the transmission device of this structure is: the rear part of the lock bolt is located in the lock box. Lock bolt handle, there are two oblong holes on the bolt handle, guide pins and screws fixed on the lock box are arranged in the oblong holes, a rack is arranged on the bolt handle, and an emergency rack is arranged on the side of the bolt handle , a motor is installed in the lock box, and the output shaft of the motor is fixed with a gear that meshes with the rack. The rotation of the gear drives the rack to move the lock tongue so that the lock can be closed or unlocked. There is also a lock in the lock box. Emergency key, the emergency key is equipped with emergency gear and emergency rack meshing, the disadvantage of the transmission device of this structure is: the lock tongue is long and heavy, not only takes up space but also takes up materials, and the gear and rack are directly driven by the motor. The transmission is unstable and the gears are easy to wear; the emergency key can only be used when the motor transmission fails, and cannot be used as a daily mechanical switch lock, which makes the switch lock method appear single. This transmission device is relatively simple, and structure is also unreliable.

Contents of the invention

The purpose of the utility model is to provide a lock tongue with small volume, less space and material saving for the above existing problems and deficiencies. On this basis, the further purpose of the utility model is to provide a coded lock which organically integrates the mechanical unlocking and the combination button switch lock; on this basis, the further purpose of the utility model is to provide a combination lock tongue.

The technical scheme of the utility model is realized in the following way: a coded lock includes a lock box, a dead bolt, a motor, a transmission device and a coded control circuit assembly, wherein the power input end of the motor is connected to the output port of the coded control circuit assembly , characterized in that the deadbolt is a rigid square body with an inner cavity, a return spring is installed between the bottom plate and the port of the inner cavity of the deadbolt, a rotating shaft is arranged between the deadbolt and the transmission device, and one end of the rotating shaft and the transmission device The output end is connected, and the other end is placed in the return spring in the inner cavity of the lock tongue, and the surface of the shaft body is symmetrically provided with a convex column that can extend into the ramp of the return spring, and the lock tongue is positioned on the rotatable rotating shaft The helical movement of the convex column in the return spring ramp makes the elastic force produced by the return spring perform telescopic action on the promotion of the dead bolt.

In order to prevent the return spring from detaching from the inner chamber of the deadbolt, a limiter is installed at the port of the inner cavity of the deadbolt. The outer circumference of the limiter is symmetrically provided with two wings, and the middle of the limiter is provided with a circular hole that can be inserted into the rotating shaft. , the circumference of the circular hole is symmetrically provided with wing holes that can allow the bosses on the surface of the shaft body of the rotating shaft to pass through. In order to make the transmission device flexibly control the expansion and contraction of the deadbolt, there are elongated slots along the length direction on two or more sides of the deadbolt. A straight wire turned by a return spring.

In order to organically combine mechanical unlocking and password unlocking, a mechanical lock cylinder is provided in the lock box, and the mechanical lock cylinder and the dead bolt are connected through a pull rod. The lever provided on the mechanical lock cylinder can be inserted into the pull hole of the pull rod, and the hook provided at the other end of the pull rod is hooked on the side of the lock tongue, and the pull rod can drive the lock tongue to expand and contract horizontally under the toggle of the lever.

In order to close the lock conveniently, an automatic locking device electrically connected with the password control circuit assembly is provided in the lock housing. There are many kinds of automatic locking devices, which may include contact switches and The telescopic column that is telescopically installed in the lock box is in contact with the contact switch, wherein the contact switch includes a relay electrically connected to the password control circuit assembly, a cylindrical key arranged on the relay, and one end is movably connected with the relay and pressed against the cylinder The elastic contact piece on the key, the telescopic column includes the top column, the return spring and the limit seat located in the lock box, wherein the section of the top column covered with the return spring is installed in the limit seat, and one end of the top column is set as a two-sided inclined meeting head It protrudes from the slot hole at the corresponding position of the front baffle plate of the lock box. When the bumper closes the door, it can be automatically retracted into the lock box after touching the door strike plate. The elastic contact piece is thus a wedge-shaped contact that connects the power supply; the automatic locking device can also be a photoelectric switch device electrically connected with the password control circuit assembly.

For stable and reliable transmission, the above-mentioned transmission device is a two-stage reduction gear set, and the two-stage reduction gear set includes the first-stage driving gear on the output shaft of the motor, which is installed on a fixed shaft in the lock box and is connected with the first-stage driving gear. The meshing first-stage driven gear, the second-stage driving gear coaxially installed with the first-stage driven gear, and the second-stage driving gear meshed with and fixedly installed on one end of the rotating shaft connected to the lock box and drives the rotating shaft Rotating second stage driven gear.

In the utility model, a rotating shaft is arranged between the dead bolt and the transmission device, and the convex column provided on the rotating shaft performs a spiral motion in the return spring ramp installed in the inner chamber of the dead bolt to generate elastic force to push the dead bolt to carry out telescopic action. The structure is not only light and material-saving, but also flexible and convenient to realize the expansion and contraction of the lock tongue. At the same time, because the transmission device is set as a two-stage reduction gear set, it not only makes the transmission more stable and reliable, but also can effectively prevent the mechanical wear of the gears; Integrating into one, it can not only be directly unlocked by the key, but also can be locked and opened by the operation password, which is convenient to use and reliable in structure; It is necessary to insert the key or press the lock key to automatically extend the lock bolt to realize the lock closing, which makes the lock closing appear simple and convenient.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Fig. 1 is the structural representation after removing loam cake for the utility model lock box;

Fig. 2 is a schematic structural view of the spacer of the present invention.

Detailed ways

As shown in Figure 1 and Figure 2, a combination lock of the present invention includes a lock box 1, a dead bolt 2, a motor 3, a transmission device and a password control circuit assembly, wherein the power input terminal of the motor 3 is connected to the password control circuit assembly Connected to the output end, it is characterized in that the deadbolt 2 is a rigid square body with an inner cavity, a return spring 21 is installed between the bottom plate of the inner cavity of the deadbolt 2 and the port, and a rotating shaft is arranged between the deadbolt 2 and the transmission device 4. One end of the rotating shaft 4 is connected to the output end of the transmission device, and the other end is sleeved in the return spring 21 in the inner cavity of the lock tongue, and the surface of the shaft body is symmetrically provided with a ramp that can extend into the return spring 21. Protruding post 41, dead bolt 2 makes the elastic force produced by back spring 21 perform stretching action on dead bolt 2 through the helical movement of protruding post 41 on the rotatable rotating shaft 4 in the ramp of return spring 21 . In order to prevent the return spring from breaking away from the inner cavity of the dead bolt, a limiting piece 22 which can prevent the returning spring 21 from breaking away from the inner cavity of the deadbolt 2 is installed at the port of the inner cavity of the deadbolt 2. The outer circumference of the limiting piece 22 is symmetrically provided with two wings. 221, a round hole 222 that can be inserted into the rotating shaft 4 is provided in the middle of the limiting piece 22, and the circular hole 222 is symmetrically provided with a wing hole 223 that allows the protrusion 41 on the surface of the rotating shaft 4 to pass through. In order to enable the transmission device to flexibly control the expansion and contraction of the deadbolt, two or more sides of the above-mentioned deadbolt 2 are respectively provided with elongated slots 23 along the length direction, and the two ends of the above-mentioned return spring 21 are arranged as vertical return springs 21 and can be extended and inserted. Be contained in the straight iron wire that prevents back-moving spring 21 from rotating in the slotted hole 23. In order to organically combine mechanical unlocking and password unlocking, a mechanical lock core 5 is provided in the above-mentioned lock box 1, and the mechanical lock core 5 and the dead bolt 2 are connected by a pull rod 6, wherein the mechanical lock core 5 is provided with a driving rod 51, so One end of the pull rod 6 is provided with a pull hole 61 and the other end is provided with a hook 62, wherein the pull rod 51 provided with the mechanical lock cylinder 5 can be inserted into the pull hole 61 of the pull rod 6, and the pull hook 62 provided at the other end of the pull rod 6 is hooked on the On the side of the dead bolt 2, the pull rod 6 can drive the dead bolt 2 to expand and contract horizontally under the toggle of the driving rod 51. In order to facilitate cooperation, the utility model adopts the following structure: the four sides of the above-mentioned deadbolt 2 are respectively provided with elongated slots 23, and the straight iron wires provided at both ends of the above-mentioned return spring 21 are inserted on the upper side or the bottom side. In the strip-shaped slot 23 on the top, and the two wings 221 provided symmetrically on the outer circumference of the limit piece 22 are inserted in the strip-shaped slot 23 on the left and right sides of the deadbolt 2, and the hook 62 of the above-mentioned pull rod 6 is hooked on In the slot 23 on the side of the deadbolt 2. For the convenience of closing the lock, the above-mentioned lock box 1 is provided with an automatic locking device 7 electrically connected to the password control circuit assembly. The head switch 71 and the telescopic column 72 that is telescopically installed in the lock box 1 in contact with the contact switch 71, the contact switch 71 includes a relay 711 electrically connected with the password control circuit assembly, and a cylinder set on the relay 711. The key 712 and one end are movably connected to the relay 711 and the elastic contact piece 713 is pressed on the cylindrical key 712 . The telescopic post 72 includes a top post 721, a return spring 722 and a limit seat 723 located in the lock box 1, wherein a section of the top post 721 covered with a return spring 722 is installed in the limit seat 723, and one end of the top post 721 is set to two sides The inclined contact head 7211 protrudes from the slot hole at the corresponding position of the front plate of the lock box 1. The contact head 7211 can automatically retract into the lock box 1 after touching the door strike plate. When the 7211 retracts, it can squeeze the elastic contact piece 713 and make it connect to the wedge-shaped contact 7212 of the power supply. The automatic locking device 7 can also be a photoelectric switch device electrically connected with the password control circuit assembly. In order to save manufacturing cost, the utility model adopts the preceding automatic locking device 7 . When in use, when the relay 711 is turned on, the contact switch 71 transmits the lock signal to the password control circuit assembly, and the password control circuit assembly transmits the lock command to the motor 3, and the motor 3 rotates forward to drive the lock tongue 2 out of the lock box 1 to lock the door; for stable and reliable transmission, the above-mentioned transmission device is set as a secondary reduction gear set 8, and the secondary reduction gear set 8 includes the first-stage driving gear 81 on the output shaft of the motor 3, installed in the lock box 1 The first stage driven gear 82 on a fixed shaft and meshed with the first stage driving gear 81, the second stage driving gear 83 coaxially installed with the first stage driven gear 81, and the second stage driving gear 83 meshing with the first stage driven gear 81 And it is fixedly installed on one end of the rotating shaft 4 connected with the lock box 1 and drives the second stage driven gear 84 which rotates the rotating shaft 4 . In order to facilitate the opening and closing of the door when there are people, the above-mentioned lock box 1 is provided with a pull rod 91 that is connected to the inside and outside handle and can be moved to the rear end of the oblique auxiliary dead bolt 9 to control the telescopic shift fork 10 of the auxiliary dead bolt 9 . In order to facilitate the switch lock, a remote control switch lock control circuit assembly device that is electrically connected with the motor 3 and can control the forward or reverse rotation of the motor 3 can also be provided. The remote control switch lock control circuit assembly device includes a remote control transmitter with a remote control transmitter circuit and The remote control receiving circuit that is provided with in the lock body cooperates with the remote control transmitting circuit.

Claims (10)

1. A combination lock, comprising a lock box (1), a dead bolt (2), a motor (3), a transmission device and a combination control circuit assembly, wherein the power input terminal of the motor (3) is connected to the output of the combination control circuit assembly The ends are connected, and it is characterized in that the deadbolt (2) is a rigid square body with an inner cavity, and a return spring (21) is installed between the bottom plate of the inner cavity of the deadbolt (2) and the port, and the deadbolt (2) and the transmission device A rotating shaft (4) is arranged between them, one end of the rotating shaft (4) is connected to the output end of the transmission device, and the other end is sleeved in the return spring (21) in the inner chamber of the lock tongue, and the shaft body Surface symmetry is provided with the boss (41) that can stretch into the ramp of return spring (21), and dead bolt (2) passes through the boss (41) that is positioned on the rotatable rotating shaft (4) in the ramp of return spring (21). The helical movement of the back spring (21) causes the elastic force produced by the dead bolt (2) to perform a telescopic action. 2. The combination lock according to claim 1, characterized in that the port of the inner chamber of the deadbolt (2) is equipped with a limit piece (22) which can prevent the return spring (21) from detaching from the inner chamber of the deadbolt (2) , the outer circumference of the spacer (22) is symmetrically provided with two wings (221), and the center of the spacer (22) is provided with a circular hole (222) that can be inserted into the rotating shaft (4), and the circular hole (222) A wing hole (223) that allows the boss (41) on the surface of the shaft body of the rotating shaft (4) to pass through is arranged symmetrically on its circumference. 3. The combination lock according to claim 1, characterized in that two or more side surfaces of the above-mentioned deadbolt (2) are respectively provided with elongated slots (23) along the length direction, and the two ends of the above-mentioned return spring (21) Be arranged as vertical back-moving spring (21) and extend the straight iron wire that can be inserted in the slotted hole (23) and prevent back-moving spring (21) from rotating. 4. The combination lock according to claim 1, characterized in that a mechanical lock core (5) is provided in the lock box (1), and the mechanical lock core (5) and the lock tongue (2) pass through the pull rod (6) connection, wherein the mechanical lock core (5) is provided with a lever (51), one end of the pull rod (6) is provided with a dial hole (61) and the other end is provided with a hook (62), wherein the mechanical lock core (5) is provided with The lever (51) of the pull rod (6) can be inserted into the pull hole (61) of the pull rod (6), and the hook (62) provided at the other end of the pull rod (6) is hooked on the side of the dead bolt (2), and the pull rod (6) The dead bolt (2) can be driven horizontally to expand and contract under the toggle of the driving lever (51). 5. The combination lock according to claim 3 or 4, characterized in that the four sides of the above-mentioned lock tongue (2) are provided with elongated slots (23), and the two ends of the above-mentioned return spring (21) are provided with straight The iron wire is inserted in the strip slot (23) that is provided with on the upper side or the bottom side, and the two wings (221) that are provided symmetrically on the outer circumference of the limit piece (22) are inserted in the left and right sides of the dead bolt (2) In the elongated slots (23) on both sides, the hooks (62) of the above-mentioned pull bars (6) are hooked in the slots (23) on the side close to the pull bars (6). 6. The combination lock according to claim 1, characterized in that the lock box (1) is provided with an automatic locking device (7) electrically connected to the combination control circuit assembly. 7. The combination lock according to claim 6, characterized in that the above-mentioned automatic locking device (7) includes a contact switch (71) electrically connected to the combination control circuit assembly and a retractable contact switch (71). The telescopic column (72) that is installed in the lock box (1), the contact switch (71) includes a relay (711) electrically connected with the password control circuit assembly, a cylindrical key ( 712) and one end is movably connected with the relay (711) and pressed against the elastic contact piece (713) on the cylinder key (712). 8. The combination lock according to claim 7, characterized in that the telescopic column (72) includes a top column (721), a return spring (722) and a limit seat (723) located in the lock box (1), Wherein the push post (721) is covered with a section of the back-moving spring (722) and is installed in the limit seat (723), and one end of the push post (721) is set as a two-sided inclined meeting head (7211) and from the front baffle plate of the lock box (1). It protrudes from the slot hole at the corresponding position, and the contact head (7211) can automatically retract into the lock box (1) after touching the door strike plate. The other end of the top post (721) is provided with a The wedge-shaped contact (7212) that can squeeze the elastic contact piece (713) and make it connect to the power supply. 9. The combination lock according to claim 1, characterized in that the above-mentioned transmission device is a two-stage reduction gear set (8), and the two-stage reduction gear set (8) includes a first gear mounted on the output shaft of the motor (3). Stage driving gear (81), be installed on the lock box (1) li on a fixed shaft and the first stage driven gear (82) with the first stage driving gear (81) meshing, and the first stage driven gear (82) ) the second-stage driving gear (83) coaxially installed and meshed with the second-stage driving gear (83) and fixedly installed on one end of the rotating shaft (4) connected with the lock box (1) and drives the rotating shaft (4) Rotating second stage driven gear (84). 10. The combination lock according to claim 1, characterized in that the above-mentioned lock box (1) is provided with a pull rod (91) at the rear end of the oblique auxiliary lock tongue (9) which is connected to the inner and outer handles and can be moved. ) to control the telescopic shift fork (10) of the auxiliary dead bolt (9).