CN114197969B

CN114197969B - Motor door lock and washing machine with same

Info

Publication number: CN114197969B
Application number: CN202111520575.2A
Authority: CN
Inventors: 王立孟
Original assignee: Wenzhou Tianjian Electric Co ltd
Current assignee: Wenzhou Tianjian Electric Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2023-08-18
Anticipated expiration: 2041-12-13
Also published as: CN114197969A

Abstract

The invention provides a motor door lock and a washing machine with the same, which belong to the technical field of door locks, wherein the motor door lock comprises: a motor; the lock tongue is provided with a first position extending out of the lock body and a second position retracting back into the lock body; a slider; a linkage assembly; the elastic piece is arranged between the lock tongue and the sliding piece and is suitable for providing elasticity for the lock tongue to move from the second position to the first position when the extension of the lock tongue is blocked; when the lock tongue is blocked, the lock tongue can overcome the elasticity of the elastic piece and does not extend continuously, but the sliding piece still moves, the motor still can rotate continuously, the linkage assembly still can move, the situation that the rotation of the motor is blocked does not occur, and therefore the situation that the motor is damaged and the linkage assembly is damaged does not occur.

Description

Motor door lock and washing machine with same

Technical Field

The invention relates to the technical field of door locks, in particular to a motor door lock and a washing machine with the same.

Background

The lock body structure generally comprises a telescopic lock tongue and a groove body for accommodating the lock tongue, and locking or unlocking actions of the lock body are completed by controlling the lock tongue to enter and exit the groove body. Along with the continuous popularization of the electric control degree of the lock body, an electric lock exists in the prior art, the lock body generally utilizes a motor to control the extension or retraction of the lock tongue, and the rotation action of the motor is converted into the telescopic action of the lock tongue through a certain linkage relation.

However, such motor door locks have a problem in use: in some cases, the extension of the bolt may be hindered, for example, when the door body and the door frame are not aligned. When the extension of the lock tongue is blocked, the rotation of the motor linked with the lock tongue is simultaneously subjected to resistance, and under the resistance, the motor can be heated and damaged, or a linkage assembly between the motor and the lock tongue is damaged, so that the lock body is damaged.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that if the lock tongue is blocked in the process of extending out of the mounting seat in the prior art, the motor and the linkage assembly are damaged, so that the motor door lock is provided.

The invention also provides a washing machine.

In order to solve the technical problems, the invention provides a motor door lock, comprising:

a motor;

the lock tongue is provided with a first position extending out of the lock body and a second position retracting back into the lock body;

the sliding piece is suitable for driving the lock tongue to switch between a first position and a second position;

the linkage assembly is provided with a motor at one end and a sliding piece at the other end, and is suitable for converting the rotation action of the motor into the sliding action of the sliding piece;

and the elastic piece is arranged between the lock tongue and the sliding piece and is suitable for providing elasticity for the lock tongue to move from the second position to the first position when the extension of the lock tongue is blocked.

As a preferred embodiment of the present invention,

the sliding piece is provided with a blocking part, and the lock tongue is provided with a limiting surface which is abutted with the blocking part;

the limiting surface is suitable for being abutted on the blocking part under the action of the elastic piece when the extension of the lock tongue is not blocked.

Preferably, one end of the elastic piece is connected with the lock tongue, and the other end of the elastic piece is connected with the sliding piece; in the state that the bolt stretches out and is blocked, the elastic piece is lengthened.

Preferably, one end of the elastic piece is connected with the lock tongue, and the other end of the elastic piece is connected with the sliding piece; the elastic member is compressed in a state in which the tongue protrudes to be blocked.

Preferably, the linkage assembly includes:

one side surface of the rotating disc is connected with the driving end of the driving motor, and the other side surface of the rotating disc is provided with a protruding part protruding towards the sliding part; the protruding part and the driving end of the driving motor are eccentrically arranged;

the sliding groove is formed in the sliding piece, and the protruding portion is contained in the sliding groove.

Preferably, the linkage assembly further comprises a reduction gear set adapted to convert a fast rotational motion of the motor into a slow rotational motion of the rotatable disc.

Preferably, the method further comprises:

the shell is coated and arranged outside the motor, the linkage assembly, the sliding piece and the lock tongue, and an access hole suitable for enabling the lock tongue to move in a telescopic mode is formed in the outer surface of the shell.

As an optimal scheme, a sealing ring is arranged between the access hole and the lock tongue.

Preferably, the method further comprises:

the mounting plate is mounted in the shell, the rotating disc is mounted on one side of the mounting plate, and the sliding piece is slidably mounted on the other side of the mounting plate.

Preferably, the method further comprises:

the control switch is provided with a button which is suitable for controlling the motor to stop or start;

the slider is provided with a boss adapted to press the button when the tongue is in the first position.

The invention also provides a washing machine, which comprises the motor door lock.

The technical scheme of the invention has the following advantages:

1. the motor door lock provided by the invention comprises: the device comprises a motor, a lock tongue, a sliding piece, a linkage assembly and an elastic piece; the motor drives the sliding part to move through the linkage assembly, the sliding part drives the lock tongue to extend out of the lock body, so that the lock tongue is positioned at a first position to realize locking, and the sliding part drives the lock tongue to retract into the lock body, so that the lock tongue is positioned at a second position to realize unlocking; install the elastic component between spring bolt and slider, when the spring bolt is stretching out the in-process, when the jam, the spring provides the spring force from the second position to the first position motion for the spring bolt, and even this in-process, the spring force of elastic component can be overcome to the spring bolt, no longer continue to stretch out, but the slider still takes place to remove, and the motor still can continue to rotate, and the linkage subassembly still can take place to remove, can not take place the circumstances emergence of motor rotation jam, consequently can not take place the circumstances emergence that the motor is impaired and the linkage subassembly takes place to damage.

2. The motor door lock provided by the invention is characterized in that the sliding piece is provided with a blocking part; the sliding piece can drive the lock tongue to move from the second position to the first position through the arrangement of the blocking part, so that the unlocking process is realized.

3. The invention provides a motor door lock, the linkage assembly includes: a rotating disc and a chute; the sliding part is provided with a sliding groove, the rotating disc is provided with a protruding part matched with the sliding groove, and the protruding part is used for driving the extension and retraction of the lock tongue to realize unlocking and locking through the change of the position of the protruding part in the sliding groove, so that the sliding type sliding door is stable in structure and small in resistance.

4. According to the motor door lock provided by the invention, the sliding sealing ring is arranged between the inlet and outlet hole and the lock tongue; the setting of the sealing ring can avoid short circuit caused by water entering the door lock in the expansion process of the lock tongue.

5. According to the motor door lock provided by the invention, the mounting plate is arranged in the shell, and the mounting plate is a mounting position provided by the rotating disc and the linkage assembly, so that the motor door lock is convenient to mount.

6. The motor door lock provided by the invention further comprises: a control switch; the control switch is provided with a button which is suitable for controlling the motor to stop or start, and the sliding piece is provided with a boss which is suitable for pressing the button when the lock tongue is positioned at the second position; when the sliding block and the lock tongue extend out of the shell, the control switch is turned on, so that a locking signal can be output, and the motor automatically stops rotating; when the sliding block and the lock tongue retract into the shell, the control switch is disconnected, an unlocking signal is output, and the motor automatically stops rotating.

7. The invention provides a motor door lock, the linkage assembly further comprises: a reduction gear set; the output speed of the motor is reduced by the reduction gear set and then is provided for the rotating disc, so that the speed of the rotating disc is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the internal structure of the motor door lock of the present invention.

Fig. 2 is a schematic perspective view of a first angle of the sliding member according to the present invention.

Fig. 3 is a schematic diagram of the connection relationship between the lock tongue and the sliding member according to the present invention.

Fig. 4 is a schematic front view of the first state of the latch and the slider according to the present invention.

Fig. 5 is a schematic front view of the second state of the latch and the slider according to the present invention.

Fig. 6 is a schematic view of the connection between the motor and the linkage assembly at a first angle according to the present invention.

Fig. 7 is a schematic view of the connection between the motor and the linkage assembly at a second angle according to the present invention.

Fig. 8 is a schematic perspective view of a second angle of the sliding member according to the present invention.

Fig. 9 is an external structural schematic view of the first state of the motor door lock of the present invention.

Fig. 10 is an external structural schematic view of the second state of the motor door lock of the present invention.

Fig. 11 is a schematic view showing a first state structure of the slider and the control switch of the present invention.

Fig. 12 is a schematic view showing a second state structure of the slider and the control switch of the present invention.

Reference numerals illustrate:

1. a motor; 2. a bolt; 3. a slider; 4. an elastic member; 5. a sliding groove; 6. a blocking portion; 7. a sliding plate; 8. a reduction gear set; 9. a rotating disc; 10. a chute; 11. a mounting plate; 12. a seal ring; 13. a housing; 14. a control switch; 15. a button; 16. a boss; 17. a projection.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The motor door lock provided in this embodiment, as shown in fig. 1, includes: the motor 1, the lock tongue 2, the sliding piece 3, the linkage assembly and the elastic piece 4; the bolt 2 has a first position in which it extends out of the lock body and a second position in which it retracts into the lock body; namely, when the lock tongue 2 extends out of the lock body, the lock body is locked, and when the lock tongue 2 retracts back into the lock body, the lock body is unlocked; the lock tongue 2 is slidably arranged on the sliding piece 3, and is driven by the sliding piece 3 to move; the motor 1 drives the sliding piece 3 to move through the linkage assembly; meanwhile, an elastic piece 4 is arranged between the lock tongue 2 and the sliding piece 3, and the elastic piece 4 is suitable for providing elasticity for the lock tongue 2 to move from the second position to the first position when the extension of the lock tongue 2 is blocked; even if the lock tongue 2 is blocked, the spring force of the elastic piece 4 can be overcome by the lock tongue 2, the spring force does not extend continuously, but the sliding piece 3 still moves, the motor 1 still can rotate continuously, the linkage assembly still can move, the situation that the rotation of the motor 1 is blocked does not occur, and therefore the situation that the motor 1 is damaged and the linkage assembly is damaged does not occur.

As shown in fig. 2, a sliding groove 5 is provided on the sliding member 3, one side of the sliding groove 5 is opened, and a blocking portion 6 is formed on the other side; as shown in fig. 3, the outer surface of the lock tongue 2 is provided with a protruding sliding plate 7, the sliding plate 7 is slidably disposed in the sliding groove 5, and one end surface of the sliding plate 7 abuts against the blocking portion 6 in the sliding groove 5.

As shown in fig. 4 and 5, the lock tongue 2 and the sliding block are connected in a split manner, and are connected through the elastic piece 4, when the lock tongue 2 is blocked in the extending process, the sliding piece 3 can overcome the elastic force of the spring, and move continuously, so that the motor 1 and the linkage assembly cannot slip in a free-running manner, and the function of protecting the motor and the linkage assembly is achieved.

In one embodiment, the elastic member 4 is elongated in a state where the extension of the tongue 2 is blocked; as an alternative, the elastic element 4 may also be compressed.

As shown in fig. 6 and 7, the driving end of the motor 1 is connected with one end of a reduction gear set 8, and the other end of the reduction gear set 8 is connected with the other end of a rotating disc 9; the reduction gear set 8 is adapted to convert a fast rotational movement of the motor 1 into a slow rotational movement of the rotating disc 9; further, the reduction gear set 8 is provided with a pinion and a large gear which are in meshed connection with each other, the driving end of the motor 1 is connected with the center of the pinion, the large gear is in meshed connection with the outer ring of the rotating disc 9, and a protruding part 17 is protruded from one side surface of the rotating disc 9 away from the reduction gear set 8;

as shown in fig. 8, the sliding member 3 is provided with a chute 10, and the projection 17 is accommodated in the chute 10; the chute 10 comprises a locking step surface which is arranged close to the extending direction of the lock tongue 2, an unlocking step surface which is arranged far away from the extending direction of the lock tongue 2, and an inclined transition surface which connects the locking step surface and the unlocking step surface.

As shown in fig. 1, a mounting plate 11 is arranged in a housing 13, the rotating disk 9 and the reduction gear set 8 are mounted on one side of the mounting plate 11, and the sliding piece 3 is slidably mounted on the other side of the mounting plate 11; the arrangement of the mounting plate 11 facilitates the mounting process of the rotating disc 9 and the reduction gear set 8.

As shown in fig. 9 and 10, a shell 13 is coated outside the motor 1, the reduction gear set 8, the rotating disc 9, the sliding piece 3 and the lock tongue 2, an access hole is formed in the outer surface of the shell 13, and the lock tongue 2 stretches and contracts in the access hole; the sealing ring 12 is arranged between the lock tongue 2 and the access hole, and the sealing ring 12 can prevent water from entering the door lock to cause short circuit in the extending and retracting process of the lock tongue 2.

A control switch 14 is arranged in the shell 13, and a button 15 for controlling the motor 1 to stop or start is arranged on the control switch 14; meanwhile, as shown in fig. 2, a boss 16 is arranged on the sliding part 3, when the lock tongue 2 is in the first position, i.e. when the sliding part 3 drives the lock tongue 2 to extend out of the shell 13, as shown in fig. 11, the boss 16 presses a button 15 on the control switch 14, i.e. the control switch 14 is turned on, a locking signal is output through a circuit board, and meanwhile, the motor 1 automatically stops rotating;

as shown in fig. 12, when the lock tongue 2 is in the second position, i.e. the sliding member 3 drives the lock tongue 2 to retract into the housing 13, the boss 16 is not in contact with the button 15 on the control switch 14, i.e. the control switch 14 is disconnected, the unlocking limit number is output through the circuit board, and the motor 1 is automatically stopped.

The pulse time of the motor 1 is not required to be controlled on the computer board of the washing machine, only a pulse signal is required to be given to the motor 1, and when the door lock moves to the locking or unlocking position, the motor 1 can automatically stop rotating, so that the computer board is simpler and more convenient to control.

Application method and principle

Starting the motor 1, reducing the rotation speed of the motor 1 through the reduction gear set 8, transmitting the reduced rotation speed to the rotating disc 9, and accommodating the protruding part 17 on the rotating disc 9 in the groove of the sliding piece 3, and converting the rotation movement of the protruding part 17 into the linear movement of the sliding piece 3 through the movement of the protruding part 17 in the groove so as to drive the lock tongue 2 to extend and retract along the access hole; if the lock tongue 2 is blocked and cannot retract in the extending process, the sliding part 3 continues to move by overcoming the elastic force of the elastic part 4, so that the sliding part 3 and the gear are prevented from idling and slipping in the locked process, and the gear can be protected.

Example 2

The present embodiment provides a washing machine including the motor door lock of embodiment 1.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. A motor door lock, comprising:

an electric motor (1);

a bolt (2) having a first position in which it extends out of the lock body and a second position in which it is retracted back into the lock body;

the sliding piece (3), the lock tongue (2) is slidably mounted on the sliding piece (3), and the sliding piece (3) is suitable for driving the lock tongue (2) to switch between a first position and a second position;

the linkage assembly is provided with a motor (1) at one end and a sliding piece (3) at the other end, and is suitable for converting the rotation motion of the motor (1) into the sliding motion of the sliding piece (3);

an elastic piece (4) arranged between the lock tongue (2) and the sliding piece (3); one end of the elastic piece (4) is connected with the lock tongue (2), and the other end of the elastic piece is connected with the sliding piece (3); the elastic piece (4) is suitable for providing elasticity for the spring bolt (2) to move from the second position to the first position when the spring bolt (2) is blocked from extending;

a control switch (14), wherein a button (15) suitable for controlling the motor (1) to stop or start is arranged on the control switch (14);

a boss (16) which is suitable for pressing the button (15) when the lock tongue (2) is positioned at the first position is arranged on the sliding piece (3);

a blocking part (6) is arranged on the sliding piece (3), and a limiting surface which is abutted with the blocking part (6) is arranged on the lock tongue (2); the limiting surface is suitable for being abutted against the blocking part (6) under the action of the elastic piece (4) when the extension of the lock tongue (2) is not blocked;

the linkage assembly includes:

a rotating disc (9), one side surface of which is connected with the driving end of the driving motor (1), and the other side surface of which is provided with a protruding part (17) protruding towards the sliding part (3); the protruding part (17) and the driving end of the driving motor (1) are eccentrically arranged;

a sliding groove (10) which is arranged on the sliding piece (3), and the protruding part (17) is accommodated in the sliding groove (10); the sliding groove (10) comprises a locking step surface which is close to the extending direction of the lock tongue (2), an unlocking step surface which is far away from the extending direction of the lock tongue (2), and an inclined transition surface which is connected with the locking step surface and the unlocking step surface.

2. A motor door lock according to claim 1, characterized in that the elastic member (4) is elongated in a state in which the extension of the tongue (2) is blocked.

3. A motor door lock according to claim 1, characterized in that the elastic member (4) is compressed in a state in which the extension of the tongue (2) is blocked.

4. A motor door lock according to claim 1, characterized in that the linkage assembly further comprises a reduction gear set (8), said reduction gear set (8) being adapted to convert a fast rotational movement of the motor (1) into a slow rotational movement of the rotating disc (9).

5. The motor door lock of claim 4, further comprising:

the shell (13) is arranged outside the motor (1), the linkage assembly, the sliding piece (3) and the lock tongue (2) in a coating mode, and an access hole suitable for enabling the lock tongue (2) to move in a telescopic mode is formed in the outer surface of the shell (13).

6. The motor door lock according to claim 5, characterized in that a sealing ring (12) is installed between the access hole and the lock tongue (2).

7. The motor door lock of claim 5, further comprising:

the mounting plate (11) is mounted in the shell (13), the rotating disc (9) is mounted on one side of the mounting plate (11), and the sliding piece (3) is slidably mounted on the other side of the mounting plate (11).

8. A washing machine comprising the motor door lock of claims 1 to 7.