Door lock for roller washing machine

Abstract

The invention provides a door lock for a roller washing machine, belongs to the technical field of door locks of roller washing machines, overcomes the technical defect that the existing door lock of the roller washing machine cannot be locked and unlocked forcefully, comprises a base body, and is characterized in that a locking body capable of clamping a door hook of the washing machine through elastic rotation is mounted on the base body; a locking plate capable of clamping and jacking one end of the locking body through up-down elastic movement is arranged on the side, away from a washing machine door hook, of the locking body, a sliding pin column is arranged on the side, close to the base body, of the locking plate, and the sliding pin column is installed in a sliding groove of the transmission plate in an up-down sliding mode. The transmission plate is connected with a cam installed at the output end of the motor in a left-right sliding mode, the cam drives the transmission plate to slide left and right, and the transmission plate drives the locking plate to move up and down so that the locking body can be locked to lock or unlock the washing machine door hook. The door lock can be mechanically opened or closed; the door lock can be forcibly pulled open during power failure, and the door lock is protected.

Description

Technical Field

[0001] The invention belongs to the technical field of door locks for drum washing machines, and in particular relates to a door lock for a drum washing machine. Background Art

[0002] The working principle of the door lock structure disclosed in the Chinese patent document No. 200720125731.4 and Japanese patent No. 4038546 and Japanese patent No. 2005-137508 is that the door bolt is inserted into the door lock to push the locking plate to move. After the door bolt is inserted to a certain depth, the locking plate is pushed into the window of the door bolt by the action of the return spring to position the door bolt and close the door. When the door needs to be opened, the button set on the box is pressed, and the hook connected to the button pulls the pull rod on the door lock device, and the locking plate is withdrawn from the window of the door bolt through the action of the pull rod to open the door.

[0003] The door opening design of this locking device must be equipped with a button device and corresponding connecting parts, which is structurally complex, and when the button structure fails mechanically, the door cannot be opened. In addition, in the case of a large-capacity washing machine, if a child accidentally enters the inner drum to play, after the door is closed, the child cannot push the door open from inside the inner drum, which poses a safety hazard.

[0004] The document of application number 03144503.9 discloses a door lock device for a drying machine. When closing the door, the inclined surface at the front of the hook pushes the support inside the door lock. After the hook is guided into the door lock, the support is buckled into the notch of the hook under the action of the spring to keep the door closed. When opening the door, the door is directly pulled, and the inclined surface at the front side of the notch of the hook pushes the support again to open the door. The door lock device of this structure is suitable for the situation that there is no large load between the door cover and the box body when the door is closed. If the rebound force of the door opening is relatively large after the door is closed, the hook is easy to fall out. In order to prevent the hook from falling out, it is necessary to increase the pressure of the spring. However, if the spring pressure is increased too much, since the entry and exit of the hook are both achieved by pushing the support open by the inclined surface, the operation force of the hook entering and exiting is easy to be unstable, especially after long-term use, the sliding surface of the hook and the support is aged and worn. Since there is hot water inside the drum washing machine when it is working, in order to prevent water leakage during operation, it is required to maintain a relatively large pressure between the door body and the box body, so the door lock device of this structure is not suitable for drum washing machines.

[0005] In Chinese patent literature, there is a patent document entitled "Door lock device" with publication number CN102094305B, which discloses a door lock device that can be directly opened by pulling a door, comprising a base (1) and a shell (2) connected thereto, the base being provided with a locking body (3) having a pivot, the locking body being provided with a pressing block (301), a lock hook (302), a rotation limit block I (303) and a rotation limit block II (304), a rotation torsion spring (4) being provided on the pivot of the locking body, and a movable locking plate (5) being provided on the base. A reset spring I (6) is arranged between the locking plate and the housing, and the front end (502) of the locking plate contacts the rotation limit block II (304) of the locking body under the action of the reset spring I and the rotation torsion spring, and the base body has a receiving space (103), and a reset spring II (7) is arranged in the receiving space, and one end of the reset spring II (7) contacts the bottom (1031) of the receiving space, and the other end contacts the locking plate, and the locking plate has a sliding surface (503), and the sliding surface corresponds to the sliding surface (104) on the base body. The present invention is suitable for a door lock device for a drum washing machine.

[0006] However, in the above scheme, the door lock cannot be locked and opened automatically by electric force. When the power is cut off and the door is opened forcefully, the internal components are easily damaged. This is a technical problem that we urgently need to solve. Summary of the invention

[0007] The purpose of the present invention is to provide a door lock for a drum washing machine and a pulsator washing machine thereof, so as to solve the above technical problems existing in the prior art.

[0008] According to the above purpose, the basic technical scheme of the present invention is: a door lock for a drum washing machine, including a base, characterized in that: a locking body that can engage the washing machine door hook through elastic rotation is installed on the base, and a locking plate that can clamp one end of the locking body through elastic movement up and down is provided on the side of the locking body away from the washing machine door hook, and a sliding pin column is provided on the locking plate close to the base side, and the sliding pin column is installed in the sliding groove of the transmission plate for sliding up and down, and the transmission plate can slide left and right and is connected to a cam installed on the output end of the motor, and the cam is driven to rotate by the rotation of the motor, and the cam drives the transmission plate to slide left and right, and the transmission plate drives the locking plate to move up and down to lock the locking body to lock or unlock the washing machine door hook.

[0009] Furthermore, a locking plate 2 is provided in parallel on one side of the locking plate, one end of which can support the middle part of the locking body. The other end of the locking plate 2 is movably and rotatably connected to one end of the transmission plate 2. The other end of the transmission plate 2 can slide left and right and slidably engage with an operating shaft that can move up and down.

[0010] Furthermore, when the washing machine is powered off, the washing machine door hook is pulled outward with strong force, and the washing machine door hook can drive one end of the locking body to rotate outward, and the middle part of the other end of the locking body rotates in the opposite direction toward the base side. At the same time, one end of the internal pressure locking plate 2 is flipped toward the base side, and the other end of the locking plate 2 drives the transmission plate 2 to rotate outward. The locking plate 2 is provided with a slope fulcrum close to the base side. While one end of the locking plate 2 rotates toward the base side, it also retreats backward. The middle part of the other end of the locking body can flip and slide under the other end of the locking plate 2. When the washing machine door hook is fully pulled out, the locking body can remain in the flipped state under the action of the spring, and will not damage the door lock.

[0011] Furthermore, the tail end of the second transmission plate is provided with a V-shaped sliding surface, and the operating shaft is provided with a circular smooth surface that can slidably contact the V-shaped sliding surface.

[0012] More specifically, when the operating shaft moves up and down, it slides on the surface of the operating shaft through the V-shaped sliding surface, driving the second transmission plate to move left and right, and driving the second locking plate to move left and right to drive the locking body to rotate counterclockwise to close or open the washing machine door hook.

[0013] Furthermore, a slope surface is provided between the cam and the transmission plate, and when the cam rotates clockwise, the transmission plate can be pushed to move leftward.

[0014] Furthermore, the slide groove of the transmission plate is arranged at 45 degrees to the horizontal direction.

[0015] The door lock for the drum washing machine is provided with a rotating torsion spring on the locking body for opening the hook direction of the washing machine door.

[0016] In the above-mentioned door lock for the drum washing machine, a compression spring is provided on the locking plate to separate from the direction of the locking body.

[0017] In the above-mentioned door lock for the drum washing machine, the transmission plate 2 is provided with a compression spring which allows the locking plate 2 to move leftward to ensure that the locking body is engaged with the door hook of the washing machine.

[0018] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0019] 1. A locking plate that can be clamped against one end of the locking body by elastically moving up and down is provided on the locking body of the product of the present invention, and the locking plate is provided with a sliding pin column near the base body. The sliding pin column is installed in the sliding groove of the transmission plate for sliding up and down. The transmission plate can slide left and right and is connected with a cam installed at the output end of the motor. The cam is driven to rotate by the rotation of the motor, and the cam drives the transmission plate to slide left and right. The transmission plate drives the locking plate to move up and down to lock the locking body to lock or unlock the washing machine door hook. The washing machine door lock can be automatically locked and opened by setting on the washing machine program to realize automatic control, and can also be strongly locked to ensure that the door is not opened when the washing machine is working normally, thereby protecting the washing machine and the surrounding environment.

[0020] 2. The locking plate of the product of the present invention is also provided with a second locking plate parallel to one side, one end of which can support the middle part of the locking body. The other end of the second locking plate is movably connected to one end of the second transmission plate. The other end of the second transmission plate can slide left and right and slidably engage with the operating shaft that can move up and down, so as to realize mechanical opening or closing of the door lock;

[0021] 3. The locking body of the product of the present invention is provided with a rotating torsion spring in the direction of opening the washing machine door hook, the locking plate is provided with a compression spring in the direction of disengaging from the locking body, and the transmission plate 2 is provided with a compression spring for the locking plate 2 to move leftward to ensure that the locking body and the washing machine door hook are engaged. After the external force of the electric and mechanical door locks is lost, the washing machine door hook can be forcibly pulled open to open the door lock, the door lock will not be damaged, and the door lock is protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the product of the present invention;

[0023] Figure 2 This is a front view structural schematic diagram of the product of the present invention with the housing removed;

[0024] Figure 3 It is a schematic diagram of the top view of the structure of the product of the present invention;

[0025] Figure 4 It is a left-side structural schematic diagram of the product of the present invention;

[0026] Figure 5 It is a rear view structural schematic diagram of the product of the present invention;

[0027] Figure 6 for Figure 3 EE cross-sectional structure diagram;

[0028] In the figure: 1. base; 2. washing machine door hook; 3. locking body; 4. locking plate; 5. sliding pin column; 6. transmission plate; 7. slide groove; 8. motor; 9. cam; 10. locking plate 2; 11. transmission plate 2; 12. operating shaft; 13. rotating torsion spring; 14. compression spring. DETAILED DESCRIPTION

[0029] Combination Figures 1 to 6 , which is a schematic diagram of the principle structure of an embodiment of a door lock for a drum washing machine of the present invention.

[0030] Embodiment 1, electric closing and unlocking

[0031] The door lock for a drum washing machine comprises a base body 1, on which a locking body 3 is mounted which can engage with a washing machine door hook 2 by elastic rotation, a rotating torsion spring 13 for opening the washing machine door hook 2 is arranged on the locking body 3, a locking plate 4 which can be clamped at one end of the locking body 3 by elastically moving up and down is arranged on the locking body 3 away from the washing machine door hook 2, a compression spring 14 for disengaging from the locking body 3 is arranged on the locking plate 4, a sliding pin 5 is arranged on the locking plate 4 near the base body 1, the sliding pin 5 is slidably mounted in a sliding groove 7 of a transmission plate 6, the sliding groove 7 of the transmission plate 6 is arranged at 45 degrees to the horizontal direction, the transmission plate 6 can slide left and right and is connected to a cam 9 mounted on the output end of a motor 8, a ramp surface is arranged between the cam 9 and the transmission plate 6, when the cam 9 rotates clockwise, the transmission plate 6 can be pushed to move leftward, the cam 9 is driven to rotate by the rotation of the motor 8, the cam 9 drives the transmission plate 6 to slide left and right, the transmission plate 6 drives the locking plate 4 to move up and down to lock the locking body 3 to lock or unlock the washing machine door hook 2.

[0032] When the washing machine is in operation, the door lock of the washing machine should be in a locked state. At this time, the door hook 2 of the washing machine cannot be pulled out from the locking body 3. This is to ensure the safety of the washing machine. During operation, the motor 8 is powered on and rotated under the instruction of the program, driving the cam 9 to rotate clockwise. The cam 9 pushes the transmission plate 6 forward through the inclined surface arranged on the upper part. The two sides of the transmission plate 6 are restricted and cannot move up and down, but can only move to the left. The sliding pin 5 of the locking plate 4 close to the side of the base 1 is subjected to left and right thrusts and effects in the slide groove 7 in the transmission plate 6. The sliding pin 5 can only move along the slide groove 7. Since the slide groove is arranged at 45 degrees, the locking plate 4 can only move upward when it cannot move left and right. The pusher claw at its left end moves upward and presses on the end surface of the right lower end of the locking body 3 close to the side of the base 1. Through the principle of a lever or a seesaw, the locking body 3 is fulcrum with the rotating shafts at the middle ends. The right end rises and the left end can only fall, and the washing machine door hook 2 is strongly pressed. At this time, the washing machine door hook 2 is locked and cannot be opened.

[0033] If the motor 8 rotates in the reverse direction, the operation is opposite to the above, and the door lock can also be opened, that is, the washing machine door hook 2 can be pulled open under the action of external force.

[0034] If the power is cut off in this state, the motor 8 is powered off, the cam 9 loses power and no longer pushes the transmission plate 6 forward. Since the locking plate 4 is provided with a compression spring 14 that is disengaged from the locking body 3, when the external force is lost, the elastic force of the compression spring 14 pushes the locking plate 4 downward in the opposite direction, and the pawl at its left end moves downward and disengages from the locking body 3. After the external force is lost, the locking body 3 is pushed to rotate clockwise under the rotational force of the rotating torsion spring 13, and the locking body 3 is unlocked from the washing machine door hook 2. The washing machine door hook 2 can also forcefully open the door lock under the action of external force.

[0035] Embodiment 2 Mechanical lock and unlock

[0036] The door lock for a drum washing machine comprises a base 1, on which a locking body 3 is mounted which can engage with a washing machine door hook 2 by elastic rotation, and on which a rotating torsion spring 13 for opening the washing machine door hook 2 is arranged, and on the side of the locking body 3 away from the washing machine door hook 2, a locking plate 2 10 is arranged which can support the middle part of the locking body 3 at one end, and the other end of the locking plate 2 10 is movably rotatably connected to one end of a transmission plate 2 11, and the transmission plate 2 11 is provided with a locking plate 2 10 which moves to the left to ensure that the locking body 3 is engaged with the washing machine door. The compression spring 14 is engaged with the hook 2, and the other end of the transmission plate 11 can slide left and right to slide and engage with the operating shaft 12 which can move up and down; the tail end of the transmission plate 11 is provided with a V-shaped sliding surface, and the operating shaft 12 is provided with a circular smooth surface that can slide in contact with the V-shaped sliding surface. When the operating shaft 12 moves up and down, it slides on the surface of the operating shaft 12 through the V-shaped sliding surface, driving the transmission plate 11 to move left and right, and driving the locking plate 10 to move left and right to drive the locking body 3 to rotate counterclockwise to close or open the hook 2 of the washing machine door.

[0037] When the washing machine is powered off, the washing machine door hook 2 is pulled outward with strong force, and the washing machine door hook 2 can drive one end of the locking body 3 to rotate outward, and the middle part of the other end of the locking body 3 rotates in the opposite direction toward the base 1 side, and at the same time, one end of the internal pressure locking plate 2 10 is flipped toward the base 1 side, and the other end of the locking plate 2 10 drives the transmission plate 2 11 to rotate outward. The locking plate 2 10 is provided with a slope fulcrum close to the base 1 side. While one end of the locking plate 2 10 rotates toward the base 1 side, it also retreats backward. The middle part of the other end of the locking body 3 can flip and slide under the other end of the locking plate 2 10. When the washing machine door hook 2 is fully pulled out, the locking body 3 can remain in the flipped state under the action of the spring and will not damage the door lock.

[0038] Embodiment 3 Two operation modes: motor and mechanical

[0039] A door lock for a drum washing machine comprises a base body 1, on which a locking body 3 is mounted which can engage with a washing machine door hook 2 by elastic rotation, a rotating torsion spring 13 for opening the washing machine door hook 2 is arranged on the locking body 3, a locking plate 4 which can be clamped at one end of the locking body 3 by elastically moving up and down is arranged on the locking body 3 away from the washing machine door hook 2, a compression spring 14 for disengaging from the locking body 3 is arranged on the locking plate 4, a sliding pin 5 is arranged on the locking plate 4 near the base body 1, and the sliding pin 5 is slidably mounted in a sliding groove 7 of a transmission plate 6, the sliding groove 7 of the transmission plate 6 is arranged at 45 degrees to the horizontal direction, the transmission plate 6 can slide left and right and is connected to a cam 9 mounted on the output end of a motor 8, a ramp surface is arranged between the cam 9 and the transmission plate 6, when the cam 9 rotates clockwise, the transmission plate 6 can be pushed to move leftward, the cam 9 is driven to rotate by the rotation of the motor 8, the cam 9 drives the transmission plate 6 to slide left and right, the transmission plate 6 drives the locking plate 4 to move up and down to lock the locking body 3 to lock or unlock the washing machine door hook 2.

[0040] A locking plate 2 10 is also provided in parallel on one side of the locking plate 4, and one end of the locking plate 2 10 can support the middle part of the locking body 3. The other end of the locking plate 2 10 is movably and rotatably connected to one end of a transmission plate 2 11. The transmission plate 2 11 is provided with a compression spring 14 for the locking plate 2 10 to move leftward to ensure that the locking body 3 is engaged with the washing machine door hook 2. The other end of the transmission plate 2 11 can slide left and right and slidably engage with an operating shaft 12 that can move up and down. A V-shaped sliding surface is provided at the tail end of the transmission plate 2 11, and a circular smooth surface that can slidably contact the V-shaped sliding surface is provided on the operating shaft 12. When the operating shaft 12 moves up and down, it slides on the surface of the operating shaft 12 through the V-shaped sliding surface, driving the transmission plate 2 11 to move left and right, and driving the locking plate 2 10 to move left and right to drive the locking body 3 to rotate counterclockwise to close or open the washing machine door hook 2.

[0041] When the washing machine is in operation, the door lock of the washing machine should be in a locked state. At this time, the door hook 2 of the washing machine cannot be pulled out from the locking body 3. This is to ensure the safety of the washing machine. During operation, the motor 8 is powered on and rotated under the instruction of the program, driving the cam 9 to rotate clockwise. The cam 9 pushes the transmission plate 6 forward through the inclined surface arranged on the upper part. The two sides of the transmission plate 6 are restricted and cannot move up and down, but can only move to the left. The sliding pin 5 of the locking plate 4 close to the side of the base 1 is subjected to left and right thrusts and effects in the slide groove 7 in the transmission plate 6. The sliding pin 5 can only move along the slide groove 7. Since the slide groove is arranged at 45 degrees, the locking plate 4 can only move upward when it cannot move left and right. The pusher claw at its left end moves upward and presses on the end surface of the right lower end of the locking body 3 close to the side of the base 1. Through the principle of a lever or a seesaw, the locking body 3 is fulcrum with the rotating shafts at the middle ends. The right end rises and the left end can only fall, and the washing machine door hook 2 is strongly pressed. At this time, the washing machine door hook 2 is locked and cannot be opened.

[0042] If the motor 8 rotates in the reverse direction, the operation is opposite to the above, and the door lock can also be opened, that is, the washing machine door hook 2 can be pulled open under the action of external force.

[0043] If the power is cut off in this state, the motor 8 is powered off, the cam 9 loses power, and no longer pushes the transmission plate 6 forward. Since the locking plate 4 is provided with a compression spring 14 in the direction of disengaging the locking body 3, when the external force is lost, the elastic force of the compression spring 14 pushes the locking plate 4 downward in the opposite direction, and the finger at the left end moves downward to disengage the locking body 3. After the external force is lost, the locking body 3 is pushed to rotate clockwise under the rotation force of the rotating torsion spring 13, and the locking body 3 is unlocked from the washing machine door hook 2. Under the strong outward pulling action of the washing machine door hook 2, the washing machine door hook 2 can drive the locking body 3 rotates outward, and the middle part of the other end of the locking body 3 rotates in the opposite direction toward the base 1 side, and at the same time, one end of the internal pressure locking plate 2 10 is flipped toward the base 1 side, and the other end of the locking plate 2 10 drives the transmission plate 2 11 to rotate outward. The locking plate 2 10 is provided with a slope fulcrum near the base 1 side. While one end of the locking plate 2 10 rotates toward the base 1 side, it also retreats backward. The middle part of the other end of the locking body 3 can be flipped and slid under the other end of the locking plate 2 10. When the washing machine door hook 2 is fully pulled out, the locking body 3 can remain in the flipped state under the action of the spring without damaging the door lock.

[0044] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0045] Although the following terms are used more frequently in this article: 1. base; 2. washing machine door hook; 3. locking body; 4. locking plate; 5. sliding pin; 6. transmission plate; 7. slide slot; 8. motor; 9. cam; 10. locking plate 2; 11. transmission plate 2; 12. operating shaft; 13. rotary torsion spring; 14. compression spring, etc., the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

[0046] The door lock for the drum washing machine provided by the present invention is introduced above. In the introduction, specific preferred embodiments are used to illustrate the principles and implementation methods of the present invention. These embodiments are only used to help understand the principles and core ideas of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the design ideas of the present invention, the implementation schemes in the above embodiments can be further combined or replaced, and the present invention can be improved and modified in a number of ways. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A door lock for a drum washing machine, comprising a base (1), characterized in that: The base (1) is provided with a locking body (3) which can engage with a washing machine door hook (2) by elastic rotation. A locking plate (4) which can engage with one end of the locking body (3) by elastically moving up and down is provided on a side of the locking body (3) away from the washing machine door hook (2). A sliding pin (5) is provided on a side of the locking plate (4) close to the base (1). The sliding pin (5) is installed in a sliding groove (7) of a transmission plate (6) so as to slide up and down. The transmission plate (6) is connected to a cam (9) installed at an output end of a motor (8) so as to slide left and right. The cam (9) is driven to rotate by the rotation of the motor (8). The cam (9) drives the transmission plate (6) to slide left and right. The transmission plate (6) drives the locking plate (4) to move up and down to lock the locking body (3) to lock or unlock the washing machine door hook (2).

2. The door lock for a drum washing machine according to claim 1, characterized in that: A second locking plate (10) is parallelly disposed on one side of the locking plate (4) and has one end capable of supporting the middle portion of the locking body (3). The other end of the second locking plate (10) is movably and rotatably connected to one end of the second transmission plate (11). The other end of the second transmission plate (11) can slide left and right to be slidably engaged with an operating shaft (12) that can move up and down.

3. The door lock for a drum washing machine according to claim 2, characterized in that: When the washing machine is powered off, the washing machine door hook (2) is pulled outward with strong force, and the washing machine door hook (2) can drive one end of the locking body (3) to rotate outward, and the middle part of the other end of the locking body (3) rotates in the opposite direction toward the base (1), and at the same time, one end of the internal pressure locking plate (10) is turned toward the base (1), and the other end of the locking plate (10) drives the transmission plate (11) to rotate outward. The locking plate (10) is provided with a slope fulcrum near the base (1). When one end of the locking plate (10) rotates toward the base (1) and also retreats backward, the middle part of the other end of the locking body (3) can turn over and slide to the bottom of the other end of the locking plate (10). When the washing machine door hook (2) is fully pulled out, the locking body (3) can remain in the turned state under the action of the spring, and the door lock will not be damaged.

4. The door lock for a drum washing machine according to claim 2, characterized in that: The tail end of the second transmission plate (11) is provided with a V-shaped sliding surface, and the operating shaft (12) is provided with a circular smooth surface that can slidably contact the V-shaped sliding surface.

5. The door lock for a drum washing machine according to claim 4, characterized in that: When the operating shaft (12) moves up and down, it slides on the surface of the operating shaft (12) through the V-shaped sliding surface, driving the second transmission plate (11) to move left and right, and driving the second locking plate (10) to move left and right, driving the locking body (3) to rotate clockwise and counterclockwise, so as to close or open the washing machine door hook (2).

6. The door lock for a drum washing machine according to claim 1, characterized in that: A slope surface is provided between the cam (9) and the transmission plate (6), and when the cam (9) rotates clockwise, the transmission plate (6) can be pushed to move leftward.

7. The door lock for a drum washing machine according to claim 1, characterized in that: The slide groove (7) of the transmission plate (6) is arranged at an angle of 45 degrees to the horizontal direction.

8. The door lock for a drum washing machine according to any one of claims 1 to 7, characterized in that: The locking body (3) is provided with a rotating torsion spring (13) in the direction of opening the washing machine door hook (2).

9. The door lock for a drum washing machine according to any one of claims 1 to 7, characterized in that: The locking plate (4) is provided with a compression spring (14) that is separated from the locking body (3).

10. The door lock for a drum washing machine according to any one of claims 1 to 7, characterized in that: The second transmission plate (11) is provided with a compression spring (14) which enables the second locking plate (10) to move leftward to ensure that the locking body (3) is engaged with the washing machine door hook (2).

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