WO2016089806A2

WO2016089806A2 - Door lock

Info

Publication number: WO2016089806A2
Application number: PCT/US2015/063078
Authority: WO
Inventors: Yang Wang
Original assignee: Illinois Tool Works Inc.
Priority date: 2014-12-03
Filing date: 2015-12-01
Publication date: 2016-06-09
Also published as: WO2016089806A3

Abstract

A door lock (100) for locking a door of an electrical appliance, comprising a driving gear (305), a lockpin driving wheel (210), a lockpin (110), and a spring element (510). In the present invention, the lockpin driving wheel (210) is driven by the driving gear (305) to rotate synchronously; and when the lockpin driving wheel (210) is driven to rotate in a second direction by an external force, the lockpin driving wheel (210) overcomes the friction of the spring element (510) against the inner top of the lockpin driving wheel (210) and the inner bottom of the driving gear (305), so that the driving gear (305) is not driven by the lockpin driving wheel (210), and thus the lockpin driving wheel (210) slidably rotates on the driving gear (305).

Description

DOOR LOCK

TECHNICAL FIELD

The present invention relates to a door lock for an electrical appliance, and in particular to a door lock for an electrical appliance with an emergency release device.

BACKGROUND

Current electrical appliances need a high-security door lock mechanism to be installed therein. A washing machine, for example, needs a door lock mechanism for fixing to be installed therein in order to lock its top plate, so as to avoid possible damages to human bodies caused by the high-speed rotation during the operation of a large tumbler washing machine (or the high-speed rotation due to inertia after the stop of the operation).

Existing door locks are all closed and opened by stretching and retracting a lockpin driven by an electric motor via a driving mechanism. However, the driving mechanism converts the rotational movement of the motor into the rectilinear movement of the lockpin, and slipping of a gear or slipping between driving wheels may occur during the transmission of movement, thereby causing a delay in the positioning of the lockpin, which is disadvantageous for the accurate control of the door lock. Furthermore, in the case of for example a sudden power cut of the electrical appliance, an emergency unlocking device is needed for opening the door lock in emergency. SUMMARY

For solving the above technical problems, the present invention provides a door lock:

A door lock (100) for locking a door of an electrical appliance, comprising: a driving gear (305);

a lockpin driving wheel (210) engaged with an upper portion of the driving gear (305) so that a cavity (550) is internally formed between the lockpin driving wheel (210) and the driving gear (305);

a lockpin (110) driven by the lockpin driving wheel (210) to make a rectilinear reciprocating movement, wherein the lockpin (110) has a released position and a locked position at which the lockpin (110) locks the door of the electrical appliance;

a spring element (510) disposed in the cavity (550) so that an upper end of the spring element (510) abuts against an inner top (552) of the lockpin driving wheel (210), and a lower end of the spring element (510) abuts against an inner bottom (554) of the driving gear (305);

wherein when the driving gear (305) rotates in a first direction, the lockpin driving wheel (210) is driven to rotate synchronously in the first direction by the friction of the spring element (510) against the inner top (552) of the lockpin driving wheel (210) and the inner bottom (554) of the driving gear (305); and

wherein when the lockpin driving wheel (210) is driven to rotate in a second direction (namely a direction opposite to the first direction) by an external force, the lockpin driving wheel (210) overcomes the friction of the spring element (510) against the inner top (552) of the lockpin driving wheel (210) and the inner bottom (554) of the driving gear (305), so that the driving gear (305) is not driven to rotate by the lockpin driving wheel (210), and thus the lockpin driving wheel (210) slidably rotates on the driving gear (305).

The present invention further discloses a door lock with an emergency release device, comprising:

a lockpin driving wheel (210);

a lockpin (110) having a locked position and a released position, wherein the lockpin driving wheel (210) makes reciprocating rectilinear movement between the locked position and the released position;

an emergency release device configured to drive the lockpin driving wheel (210) to rotate in a second direction to move the lockpin (110) from the locked position to the released position; and

a resetting device (510) configured to reset the emergency release device after the emergency release operation. The beneficial effects of the present invention are as follows:

1. A cavity is internally formed by fitting the lockpin driving wheel (210) and the driving gear (305), with the spring element (510) supported therebetween, and the lockpin driving wheel (210) is driven to rotate by the driving gear (305) by means of the friction between the spring element (510) and the lockpin driving wheel (210) and the driving gear (305), so that the rotary power can be fully transmitted, which solves the problem of transmission delay at the lockpin driving wheel (210).

2. When the emergency release device is used to rotate the lockpin driving wheel (210) in an opposite direction, since the lockpin driving wheel (210) is locked by the worm of the motor, the friction between the spring element (510) and the lockpin driving wheel (210) and the driving gear (305) is insufficient to drive the driving gear (305) to synchronously rotate in the opposite direction, and slipping occurs between the lockpin driving wheel (210) and the driving gear (305), so as to avoid failure in manual unlocking.

3. The present invention is further provided with an emergency release device which allows the door lock to be opened manually when the electrical appliance is suddenly powered off, has a simple structure, and is convenient to operate.

DESCRIPTION OF DRAWINGS

Fig. 1 is a three-dimensional structural schematic diagram of the door lock (100) of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of the door lock (100) of the present invention with the housing of door lock removed.

Fig. 3 is a three-dimensional structural schematic diagram of the driving mechanism of the present invention.

Fig. 4 is a three-dimensional structural schematic diagram of the rear side of the lockpin (110) of the present invention.

Fig. 5 A is a sectional view of Fig. 1 along the line B-B'.

Fig. 5B is a sectional view of the lockpin driving wheel (210) and the driving gear (305).

Fig. 6A is a vertical view three-dimensional diagram of the lockpin driving wheel (210) of the door lock (100) of the present invention.

Fig. 6B is a structural explosion schematic diagram of the door lock (100) of the present invention.

Fig. 7 A is a structural schematic diagram of the emergency release device of the present invention.

Fig. 7B is a structural schematic diagram of the spring cord (104) of the present invention.

Fig. 8A is a structural schematic diagram of the cord knot (628) and the notch

(626) of the present invention.

Fig. 8B is an enlarged view of the region A in Fig. 8A.

Fig. 9A is a two-dimensional structural schematic diagram of the lockpin (110) of the present invention.

Fig. 9B is a two-dimensional structural schematic diagram of the lockpin driving wheel (210) of the present invention.

Fig. 9C is a two-dimensional structural schematic diagram of the pulley (610) of the present invention.

Fig. 1 OA is a structural schematic diagram of the lockpin (110) of the present invention in the released position.

Fig. 10B is a structural schematic diagram of the lockpin (110) of the present invention in the locked position.

Fig. IOC is a structural schematic diagram of releasing the lockpin (110) changing from the locked position to the released position by means of the emergency release device of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The various embodiments of the present invention will be described below with reference to the drawings, which constitute a part of the description. It will be understood that, although the terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "perpendicular", or "parallel", are used in the present invention to describe various exemplary structural portions and elements in the present invention, the terms used herein are only for the purpose of illustration, and are determined based on the exemplary orientation shown in the drawings. Since the embodiments disclosed in the present invention can be arranged according to different directions, the terms indicating directions are construed as just for illustration, rather than as a limitation. In the following drawings, the same components and parts use the same figure numbers, and the similar components and parts use the similar figure numbers, so as to avoid redundant description.

As shown in Fig. 1, a door lock 100 has a substantially square housing 101, the housing 101 being engaged with the door lock case 109 to form a cavity. On the side of the left end of the housing, a lockpin head 112 extends outward from the inner side of the housing 101, and the lockpin head 112 can make reciprocating movement and can be inserted into a lock hole corresponding to the top plate of the electrical appliance so as to lock the top plate. At the lower end of the housing 101, a spring cord 104 extends from the inner side of the housing 101, and a tail end of the spring cord 104 is provided with a pull ring 102.

As shown in Fig. 2, the internal structural schematic diagram of the door lock 100 with the housing 101 removed includes: a lockpin 110, a lockpin driving wheel 210, an indicating circuit 218, a sliding slot 216, a rotation shaft 206, a circuit connection spring leaf 221, etc., wherein the rotation shaft 206 is coaxial to the lockpin driving wheel 210, and the lockpin driving wheel 210 rotates around the rotation shaft 206. The lockpin 110 is provided at its rear portion with a sliding slot 216 penetrating therethrough, and the sliding slot 216 limits the lockpin 110 to make a rectilinear reciprocating movement on the rotation shaft 206. A circuit connection spring leaf 221 is provided at an inner side of the lockpin 110 facing the indicating circuit 218, and when the lockpin 110 makes the reciprocating movement, the circuit connection spring leaf 221 turns on or turns off the indicating circuit 218. Specifically, when the lockpin 110 extends outward to the locked position, the circuit connection spring leaf 221 is in contact with the indicating circuit 218, and the indicating circuit 218 is switched on and sends to an operator an indicating signal indicating that the door lock is in the locked position (the indicating signal may be light emitted by an indicating light, a light emitting diode, etc., not shown in the figure); and when the lockpin 110 returns inward to the released position, the circuit connection spring leaf 221 is disconnected from the indicating circuit 218, so that the indicating circuit 218 will not send the indicating signal. The indicating circuit 218 is arranged on the printed circuit board 208, and is arranged above the motor 310 (see Fig. 3 and Fig. 6B).

As shown in Fig. 3, the structural schematic diagram of the driving mechanism, with the housing 101, the door lock case 109 and the printed circuit board 208 of the door lock 100 removed, comprises a lockpin 110, a lockpin driving wheel 210, a sliding slot 216, a rotation shaft 206, a driving gear 305, a gear 307, a worm 308, a rotation shaft 309, a driving shaft 315, a motor 310, etc. The lockpin 110 is driven by the lockpin driving wheel 210 to make a rectilinear reciprocating movement, the lockpin driving wheel 210 is driven by the driving gear 305 to rotate, and the driving gear 305 is driven by the worm 308. Specifically, the motor 310 is provided with the driving shaft 315, the driving shaft 315 is linked with the worm 308; and the driving gear 305 is provided on an outer wall at a lower portion thereof with a gear 307, and the gear 307 engages with the worm 308 so that the driving gear 305 is driven to rotate in the first direction (counter-clockwise direction) when the worm 308 is driven by the motor 310 to rotate.

As shown in Fig. 4, the rear side of the lockpin 110 comprises an eccentric slot 414 arranged at one side of the middle portion, a sliding slot 216 in the middle portion, a lockpin head 112 extending at the front end, etc., wherein the lockpin driving wheel 210 is provided with an eccentric pin 509 (see Fig. 5); the eccentric pin 509 is inserted in the eccentric slot 414; and the eccentric pin 509 converts the rotational movement of the lockpin driving wheel 210 into a rectilinear movement of the lockpin 110.

Fig. 5 A is a sectional view of Fig. 1 along the line B-B'.

As shown in Fig. 5 A, the housing 101 of the door lock 100 engages with the door lock case 109 to form a cavity, the cavity is provided therein with a lockpin 110 having a lockpin head 112 extending outward, a lockpin driving wheel 210, a driving gear 305, a spring element 510, etc. The lockpin driving wheel 210 is arranged below the lockpin 110 and drives the motion of the lockpin 110; an upper portion of the lockpin driving wheel 210 is provided with an eccentric pin 509; and the eccentric pin 509 is inserted in an eccentric slot 414 at an underside of the lockpin 110 to drive the motion of the lockpin 110. The lockpin driving wheel 210 engages with the upper portion of the driving gear 305, so that a cavity 550 is internally formed between the lockpin driving wheel 210 and the driving gear 305; the spring element 510 is arranged in the cavity 550 and around an inner core 508 of the lockpin driving wheel 210 and the driving gear 305, so that an upper end of the spring element 510 abuts against an inner top 552 of the lockpin driving wheel 210, and a lower end of the spring element 510 abuts against an inner bottom 554 of the driving gear 305; when the driving gear 305 rotates in a first direction (counter-clockwise direction), the lockpin driving wheel 210 is driven to rotate synchronously in the first direction by means of the friction of the spring element 510 against the inner top of the lockpin driving wheel 210 and the inner bottom of the driving gear 305; and when the lockpin driving wheel 210 is driven to rotate in a second direction (namely a clockwise direction) by an external force, the lockpin driving wheel 210 overcomes the friction of the spring element 510 against the inner top of the lockpin driving wheel 210 and the inner bottom of the driving gear 305 (the external force being greater than the friction), so that the driving gear 305 is not driven to rotate by the lockpin driving wheel 210, and thus the lockpin driving wheel 210 slidably rotates on the driving gear 305.

Fig. 5B is a sectional view of the lockpin driving wheel (210) and the driving gear (305). As shown in Fig. 5B, the lockpin driving wheel 210 provides a downward edge 560 extending downward from its underside; an annular groove 570 is provided in the edge 560; the upper portion of the driving gear 305 can be inserted in the annular groove 570, so that a cavity 550 is internally formed between the lockpin driving wheel 210 and the driving gear 305; at the middle portion of the cavity 550, the lockpin driving wheel 210 abuts against a bearing portion of the driving gear 305 to form an inner core 508; the spring element 510 is arranged in the cavity 550 and around an inner core 508, so that an upper end of the spring element 510 abuts against an inner top 552 of the lockpin driving wheel 210; and a lower end of the spring element 510 abuts against an inner bottom 554 of the driving gear 305. An upper disc surface of the lockpin driving wheel 210 is provided with an eccentric pin 509, and the eccentric pin 509 is inserted in an eccentric slot 414 at the underside of the lockpin 110. The inner core 508 is hollow for arranging the rotation shaft 206 therein, both ends of the rotation shaft 206 are fixed on the door lock case 109, and the lockpin driving wheel 210 and driving gear 305 as a whole rotate around the rotation shaft 206.

As shown in Fig. 6A, a pulley 610 is sheathed around an outer edge of the lockpin driving wheel 210; an inner edge of the pulley 610 is provided with an inner slot 615; an outer side of the lockpin driving wheel 210 is provided with a sliding pin 616 protruding outward; the inner slot 615 has a length of free travel such that the sliding pin 616 can slide in the inner slot 615; and when the sliding pin 616 slides to the extremity of one end of the inner slot 615, the lockpin driving wheel 210 is driven to rotate by the pulley 610. A stop pin 620 is provided at an outer edge of the pulley 610, and the door lock case 109 is provided with a stop slot 622; the stop slot 622 is provided with a length of free travel; and when the pulley 610 rotates to the extremity of one end of the stop slot 622, the stop pin 620 is caught in the stop slot 622 to limit the rotation of the pulley 610. Even if the motor 310 still drives the driving gear 305 to rotate, owing to the engagement of the stop slot 622 and the stop pin 620, the lockpin driving wheel 210 is caught, the spring element 510 will slip, and lockpin driving wheel 210 will not make excessive rotation.

It can be seen from Fig. 6B, from top to bottom, a housing 101, a lockpin 100, a printed circuit board 208, a pulley 610, a spring cord 104, a spring 609, a spring securing bolt 630, a lockpin driving wheel 210, a driving gear 305, a motor 310, a fixing bolt 660, a door lock case 109, etc. The spring cord 104 extends from the inner side of the lower end of the door lock case 109, and a tail end of the spring cord 104 is provided with a pull ring 102.

As shown in Fig. 7A, a groove 602 is provided around an outer edge of the pulley 610, and a spring cord 104 is provided in and winds around the groove 602. A distal end of the spring cord 104 is connected with a spring 609, wherein one end of the spring 609 is connected to the spring cord 104, and the other end of the spring 609 is fixed on a spring securing bolt 630 in the door lock case 109.

As shown in Fig. 7B, the spring cord 104 crosses to form a ring and can be sheathed around the periphery of the pulley 610, one end of the spring cord 104 is provided on the spring 609, and the cord head of the spring cord 104 is fixed to form a cord knot 628.

Fig. 8A is a structural schematic diagram of the cord knot (628) and the notch (626) of the present invention.

As shown in Fig. 8A, the groove 602 is provided with a notch 626, and the cord knot 628 of the spring cord 104 is caught in the notch 626 such that the spring cord 104 and the pulley 610 are stationary relative to each other. When the pull ring 102 at the distal end of the spring cord 104 is pulled, the pulley 610 is driven by the spring cord 104 to rotate in a second direction (clockwise direction). When the pull ring 102 is released, the pulley 610 is driven by the spring 609 to rotate in a first direction (counter-clockwise direction). Fig. 8B is an enlarged view of the region A in Fig. 8A.

As shown in Fig. 8B, the spring cord 104 is provided in and winds around the groove 602, and the cord knot 628 is caught in the notch 626.

It can be seen from Fig. 9A that the front end of the lockpin 110 is a lockpin head 112, a rear portion of the lockpin head 112 is provided with a sliding slot 216 arranged in (or substantially in) the same straight line with the lockpin head 112, and a transverse eccentric slot 414 is provided at one side of the sliding slot 216.

As shown in Fig. 9B, the center of the lockpin driving wheel 210 is an inner core 508 for receiving the rotation shaft 206. An eccentric pin 509 is provided on a wheel disc of the lockpin driving wheel 210, and a sliding pin 616 is provided on an outer edge of the lockpin driving wheel 210.

As shown in Fig. 9C, the pulley 610 is of a ring structure, a stop pin 620 is provided on an outer edge of the ring structure, and the inner edge is provided with an inner slot 615. The pulley 610 is nested at the periphery of the lockpin driving wheel 210, the inner slot 615 is used for receiving the sliding pin 616, and the width of the inner slot 615 is greater than the width of the sliding pin 616, so that the inner slot 615 has a length of free travel, and the sliding pin 616 can slide a certain distance on the inner slot 615.

As shown in Fig. 10A, the lockpin 110 is in a released position and then the lockpin head 112 is in a retracted position, so that the door lock 100 cannot lock the door of the electrical appliance.

Fig. 10B is a structural schematic diagram of the lockpin (110) of the present invention in the locked position. As shown in Fig. 10B, the lockpin driving wheel 210 is driven (via the transmission of the driving gear 305) by the motor 310 to rotate by a certain angle in a counter-clockwise direction (direction A), and under the drive of the eccentric pin 509, the lockpin 110 is pushed upward to move to a locked position, and then the door lock 100 locks the door of the electrical appliance. Then the sliding pin 616 of the lockpin driving wheel 210 slides a certain distance in the inner slot 615 of the pulley 610, and the pulley 610 is not driven to rotate.

Then, if the motor 310 is controlled by a control circuit to rotate in an opposite direction (direction A') to drive the lockpin driving wheel 210 to rotate by a certain angle in a clockwise direction, the lockpin 110 will be driven by the eccentric pin 509 to move from the locked position to the released position as shown in Fig. 10A, and then the door of the electrical appliance is opened.

As shown in Fig. IOC, the door lock is in the locked state as shown in Fig. 10B, and if the electrical appliance is suddenly powered off, and the door of the electrical appliance urgently needs to be opened, this cannot be achieved by means of the drive of the motor 310. Then an emergency release device shall be used to drive the lockpin 110 from the locked position to the released position.

The specific operation includes: the pull ring 102 is pulled to drive the pulley 610 to rotate in the clockwise direction, and the inner slot 615 of the pulley 610 will be caught on the sliding pin 616 of the lockpin driving wheel 210 and driven to rotate in the clockwise direction, so that the lockpin driving wheel 210 moves the lockpin 110 from the locked position to the released position as shown in Fig. IOC. Then, the pull ring 102 is released, the spring 609 will drive the spring cord 104 to retract so as to drive the pulley 610 in an opposite direction back to the initial position (the position as shown in Fig. 10A) and get it ready for the next emergency release operation.

The stop pin 620 at the outer edge of the pulley 610 can slide a certain distance, namely the distance at which the pulley 610 performs an emergency release operation, in the stop slot 622. However, owing to the limitation by the stop pin 620 and the stop slot 622, the pulley 610 will not rotate beyond the range too much.

It is to be noted that when performing an emergency release operation, the lockpin driving wheel 210 synchronously rotates in the clockwise direction, and will drive the driving gear 305 to rotate synchronously through the spring element 510, while the driving gear 305 engages with the worm 308 of the motor 310. The friction generated by the spring element 510 is insufficient to further synchronously drive the motor 310 to rotate in the clockwise direction, and thus the spring element 510 will slip in the cavity 550; therefore, the driving gear 305 will not be driven to rotate in the clockwise direction.

Although the present invention is described with reference to the embodiments shown in the drawings, it shall be understood that the door lock of the present invention can have many changes without departing from the spirit and scope of the invention. A person skilled in the art will also be aware that the parameters in the embodiments disclosed in the invention, such as the sizes, shapes, or types of the elements or materials, can be changed in different ways and these all fall within the spirit and scope of the invention and the claims.

Claims

1. A door lock (100) for locking a door of an electrical appliance, characterized by comprising:

a driving gear (305);

wherein when the lockpin driving wheel (210) is driven to rotate in a second direction, namely a direction opposite to the first direction, by an external force, the lockpin driving wheel (210) overcomes the friction of the spring element (510) against the inner top (552) of the lockpin driving wheel (210) and the inner bottom (554) of the driving gear (305), so that the driving gear (305) is not driven to rotate by the lockpin driving wheel (210), and thus the lockpin driving wheel (210) slidably rotates on the driving gear (305).

2. The door lock (100) according to claim 1 , characterized in that:

an eccentric pin (509) is provided on a top surface of the lockpin driving wheel (210); an eccentric slot (414) is provided at a rear portion of the lockpin (110), and the eccentric pin (509) is inserted into the eccentric slot (414); and

the rotational movement of the lockpin driving wheel (210) is converted to the rectilinear movement of the lockpin (110) by the eccentric pin (509).

3. The door lock (100) according to claim 1, characterized by further comprising:

a driving mechanism (308, 309, 310 and 315) for driving the driving gear (305) to rotate in the first direction.

4. The door lock (100) according to claim 3, characterized in that:

the driving mechanism (308, 309, 310 and 315) comprises a motor (310) and a driving shaft (315);

the driving shaft (315) is linked to a worm (308); and

the driving gear (305) is provided on an outer wall of a lower portion thereof with a gear (307) which engages with the worm (308) so that the driving gear (305) is driven to rotate in the first direction when the worm (308) rotates.

5. The door lock (100) according to claim 1 , characterized in that:

a rotation shaft (206) is provided in the middle portion of the lockpin driving wheel (210) and the driving gear (305) so that the lockpin driving wheel (210) and the driving gear (305) rotate about the rotation shaft (206).

6. The door lock (100) according to claim 5, characterized in that:

the door lock (100) comprises a door lock case (109), and both ends of the rotation shaft (206) are fixed on the door lock case (109).

7. The door lock (100) according to claim 1 , characterized in that:

a sliding slot (216) is provided in a rear portion of the lockpin (110), and the sliding slot (216) is limited on the rotation shaft (206) to make rectilinear reciprocating movement.

8. The door lock (100) according to claim 1 , characterized in that:

a pulley (610) is provided around an outer edge of the lockpin driving wheel

(210);

an inner slot (616) is provided on an inner edge of the pulley (610), and a sliding pin (615) protruding outwardly is provided on the outside of the lockpin driving wheel (210);

the inner slot (616) has a length of free travel such that the sliding pin (615) can slide in the inner slot (616);

when the sliding pin (615) slides to an extremity of one end of the inner slot

(616), the lockpin driving wheel (210) is driven to rotate by the pulley (610).

9. The door lock (100) according to claim 8, characterized in that:

a stop pin (620) is provided at an outer edge of the pulley (610), and the door lock case (109) is provided with a stop slot (622);

wherein the stop slot (622) is provided with a length of free travel, and when the pulley (610) rotates to an extremity of one end of the stop slot (622), the stop pin (620) is caught in the stop slot (622) to limit the rotation of the pulley (610).

10. The door lock (100) according to claim 9, characterized in that:

a groove (602) is provided around an outer edge of the pulley (610), and spring cord (104) is provided in the groove (602).

11. The door lock (100) according to claim 10, characterized in that:

the groove (602) is provided with a notch (626), and the spring cord (104) is provided with a cord knot (628) which is caught in the notch (626) such that the spring cord (104) and the pulley (610) are stationary relative to each other;

when a proximal end of the spring cord (104) is pulled, the pulley (610) is driven to rotate in a second direction by the spring cord (104).

12. The door lock (100) according to claim 11, characterized in that: a distal end of the spring cord (104) is connected with a spring (609), wherein one end of the spring (609) is connected with the spring cord (104), and the other end of the spring (609) is fixed in an interior of the door lock case (109);

a pull ring (102) is provided at the proximal end of the spring cord (104), and the pulley (610) is driven to rotate in the second direction by pulling the pull ring (102);

when releasing the pull ring (102), the pulley (610) is driven to rotate in the first direction by the spring (609).

13. The door lock (100) according to claim 12, characterized in that:

when the pulley (610) rotates in the second direction and the lockpin driving wheel (210) is driven to rotate in the second direction by the pulley (610), the lockpin (110) will be driven from the locked position to the released position by the lockpin driving wheel (210).

14. The door lock (100) according to claim 6, characterized in that:

a circuit connection spring leaf (221) is provided on the underside of a rear portion of the lockpin (110);

a printed circuit board (208) is provided in the door lock case (109), and an upper surface of the printed circuit board (208) is provided with an indicating circuit (218);

when the lockpin (110) makes the reciprocating movement, the circuit connection spring leaf (221) turns on or turns off the indicating circuit (218).

15. The door lock (100) according to claim 14, characterized in that:

the printed circuit board (208) is disposed on an upper side of the motor

(310).

16. The door lock (100) according to claim 1 , characterized in that:

the driving gear (305) is a worm gear.

17. The door lock (100) according to one of claims 1, 3-4 and 12, characterized in that:

the first direction is a counter-clockwise direction.

18. The door lock (100) according to one of claims 1, 11, 12 and 13, characterized in that:

the second direction is a clockwise direction.

19. A door lock with an emergency release device, characterized by comprising:

a lockpin driving wheel (210);

a lockpin (110) having a locked position and a released position, wherein the lockpin driving wheel (210) is configured to rotate in a first direction to drive the lockpin (110) to make reciprocating rectilinear movement between the locked position and the released position;

an emergency release device configured to rotate in a second direction to drive the lockpin driving wheel (210) to move the lockpin (110) from the locked position to the released position; and

a resetting device (510) configured to reset the emergency release device after the emergency release operation.

20. The door lock (100) according to claim 19, characterized in that:

the resetting device (510) is a spring.

21. The door lock (100) according to claim 19, characterized in that the emergency release device comprises:

a pulley (610) provided around an outer edge of the lockpin driving wheel

(210);

an inner slot (616) provided on an inner edge of the pulley (610), and a sliding pin (615) protruding outwardly provided on the outside of the lockpin driving wheel (210); wherein the inner slot (616) has a length of free travel, and the sliding pin (615) can slide in the inner slot (616); and

wherein when the sliding pin (615) slides to an extremity of one end of the inner slot (616), the pulley (610) drives the lockpin driving wheel (210) to rotate.

22. The door lock (100) according to claim 21, characterized in that:

the stop slot (622) is provided with a length of free travel, and when the pulley (610) rotates to an extremity of one end of the stop slot (622), the stop pin (620) is caught in the stop slot (622) to limit the rotation of the pulley (610).

23. The door lock (100) according to claim 22, characterized in that:

a groove (602) is provided around an outer edge of the pulley (610), and a spring cord (104) is provided in the groove (602).

24. The door lock (100) according to claim 23, characterized in that:

25. The door lock (100) according to claim 24, characterized in that:

a distal end of the spring cord (104) is connected with a spring (609), wherein one end of the spring (609) is connected with the spring cord (104), and the other end of the spring (609) is fixed in an interior of the door lock case (109);

a pull ring (102) is provided at the proximal end of the spring cord (104), and the pulley (610) is driven to rotate in the second direction by pulling the pull ring (102); when releasing the pull ring (102), the pulley (610) will be driven to rotate in the first direction by the spring (609).

26. The door lock (100) according to claim 24, characterized in that:

when the pulley (610) rotates in the second direction and the lockpin driving wheel (210) is driven to rotate in the second direction, the lockpin (110) is moved from the locked position to the released position by the lockpin driving wheel (210).

27. The door lock (100) according to claim 19, characterized by further comprising:

a driving gear (305) configured to drive the lockpin driving wheel (210) to rotate in the first direction;

wherein the driving gear (305) and the lockpin driving wheel (210) are arranged to engage with one another, and a spring element (510) is sandwiched between the driving gear (305) and the lockpin driving wheel (210);

wherein when the driving gear (305) rotates in a first direction, the lockpin driving wheel (210) is driven to rotate synchronously in the first direction by the friction of the spring element (510) against an inner top (552) of the lockpin driving wheel (210) and an inner bottom (554) of the driving gear (305); and

wherein when the lockpin driving wheel (210) is driven to rotate in a second direction by an external force, the driving gear (305) is not moved by the lockpin driving wheel (210) such that the lockpin driving wheel (210) slides on the driving gear (305).

28. The door lock (100) according to claim 27, characterized in that:

an eccentric pin (509) is provided on the lockpin driving wheel (210);

an eccentric slot (414) is provided at a rear portion of the lockpin (110), and the eccentric pin (509) is inserted into the eccentric slot (414); and

29. The door lock (100) according to claim 27, characterized in that:

the lockpin driving wheel (210) is driven by a motor (310);

a worm (308) is linked to a driving shaft (315) of the motor (310); and the driving gear (305) is provided on an outer wall of a lower portion thereof with a gear (307) which engages with the worm (308), the gear (307) is driven to rotate by the driving shaft (315) and drives the lockpin driving wheel (210) to rotate.

30. The door lock (100) according to claim 29, characterized in that:

31. The door lock (100) according to claim 30, characterized in that:

32. The door lock (100) according to claim 29, characterized in that:

a printed circuit board (208) is provided in the door lock (100), and an upper surface of the printed circuit board (208) is provided with an indicating circuit (218);

33. The door lock (100) according to claim 32, characterized in that:

the printed circuit board (208) is disposed on an upper side of the motor

(310).

34. The door lock (100) according to claim 27, characterized in that:

the driving gear (305) is a worm gear.

35. The door lock (100) according to one of claims 19, 25 and 27, characterized in that:

the first direction is a counter-clockwise direction.

36. The door lock (100) according to one of claims 19 and 24- 27, characterized in that:

the second direction is a clockwise direction.

37. A door lock (100), characterized by comprising any combination of the technical features in claims 1-18.

38. A door lock (100), characterized by comprising any combination of the technical features in claims 19-36.