Safety door lock device and household appliance

Abstract

The utility model discloses a safety door lock device and a household electrical appliance, the device is applied to the household electrical appliance with a door body structure, the device comprises a locking device and an interlocking supporting mechanism, the interlocking supporting mechanism is installed in the household electrical appliance and is close to one side of a door body of the household electrical appliance, and one side of the door body is provided with a door hook part; the interlocking supporting mechanism is provided with a door lock hole corresponding to the door hook part, and the door hook part is clamped into the door lock hole and used for fixing the door body to the household appliance in a closed mode. The locking device is arranged on the interlocking supporting mechanism, the locking device is connected with a main controller in the household appliance, and a control part of the main controller can control the locking device to lock and limit the door hook part or unlock the locking and limit of the door hook part. The child lock function of the door body can be achieved in an electric control mode, the use safety of electric appliances is high, operation is easy and convenient, the overall structure is simple, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliance door lock structures, in particular to a safety door lock device and a household appliance. Background Art

[0002] Household appliances are a general term for electrical appliances that realize various functions, which greatly facilitate people's lives and work. Many household appliances have a door opening and closing structure, that is, the door of the household appliance needs to be opened and closed when the household appliance is used. In order to improve the safety of household appliances, corresponding door lock structures are often required to improve the safety of household appliances, such as microwave ovens or washing machines.

[0003] At present, the door lock structure of household appliances (such as microwave ovens) on the market generally includes a body, a door body, a control panel and a locking device. The control panel is mounted on the body and located on one side of the door body; a receiving groove is provided on one of the door body and the control panel, and the locking device is movably mounted in the receiving groove. The locking device includes a lock pin and a push rod, one end of the push rod is connected to the lock pin, and the other of the door body and the control panel is provided with a lock groove that matches the lock pin. Among them, the locking device also includes a first return spring and a second return spring, the first return spring is arranged between the lock pin and the groove wall of the receiving groove; the second return spring is sleeved on the push rod, a retaining rib is provided in the receiving groove, and a second through hole is provided on the retaining rib, and the other end of the push rod passes through the second through hole and is connected to the lock pin, the first end of the second return spring abuts on the retaining rib, and the second end abuts on the end surface of the other end of the button, and the reset function of the lock pin and the drag rod is realized by the provided spring structure.

[0004] In this solution, by manually pressing the button on the body, the push rod can be pushed to drive the lock pin to move in the receiving groove so that the lock pin moves out of the lock groove. After the lock pin moves out of the lock groove, the door body can be opened by pressing the door opening button or pulling the handle. Accordingly, when the door body is closed, the lock pin is inserted in the lock groove to achieve the locked state of the door body, thereby realizing the child lock function, improving the safety of the appliance, and reducing the risk of users (especially children) being injured due to misoperation.

[0005] However, the purely mechanical locking structure is prone to accidentally pressing the button during transportation, causing the locking structure to unlock and the door to open, thereby damaging the appliance; and the door opening operation of the above solution is cumbersome, requiring one hand to move the push rod to move the lock pin out of the lock slot, and the other hand to press the door opening button or pull the handle to open the door, which makes it inconvenient for users to use. Secondly, the above locking structure is relatively complex and costly. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a safety door lock device and a household appliance, which realize the child lock function of the door body by electronic control, and the appliance has high safety in use, is easy to operate, and has a simple overall structure and low cost.

[0007] In order to solve the above-mentioned technical problems, the utility model provides a safety door lock device, which is used in a household appliance with a door body structure. The device includes a locking device and an interlocking support mechanism. The interlocking support mechanism is installed in the household appliance and close to one side of the door body of the household appliance, and a door hook portion is provided on one side of the door body; a door lock hole corresponding to the door hook portion is provided on the interlocking support mechanism, and the door hook portion is inserted into the door lock hole to close and fix the door body to the household appliance; the locking device is arranged on the interlocking support mechanism, and the locking device is connected to a main controller in the household appliance. The control unit of the main controller can control the locking device to lock or release the locking restriction on the door hook portion.

[0008] As an improvement of the above-mentioned scheme, the locking device includes a reduction motor and a motor swing arm, and the rotating shaft portion of the reduction motor is connected to the rotating connection portion of the motor swing arm, which is used to drive the motor swing arm to rotate, so that the locking portion of the motor swing arm locks the door hook portion or releases the locking restriction on the door hook portion.

[0009] As an improvement of the above-mentioned scheme, the interlocking support mechanism includes an interlocking support frame and a motor mounting frame installed on the interlocking support frame, and the interlocking support frame is provided with the door lock hole; the reduction motor is installed on the motor mounting frame, and the rotating connection part of the motor swing arm is installed on the positioning shaft. The locking part of the motor swing arm can move in the door lock hole, and is used to limit or release the limit of the door hook part in the door lock hole.

[0010] As an improvement of the above scheme, an inner wall on one side of the door lock hole is provided with an inclined portion, and an end portion of the door hook portion is provided with an arc-shaped abutting portion, the arc-shaped abutting portion abuts against the inclined portion, and the door hook portion is inserted into the door lock hole along the inclined portion through the arc-shaped abutting portion.

[0011] As an improvement of the above-mentioned solution, the interlocking support frame is provided with a fixed installation column and a positioning column, and the motor mounting frame is provided with a fixed installation groove corresponding to the fixed installation column one by one and a positioning groove corresponding to the positioning column one by one; the fixed installation column is engaged with the fixed installation groove, and the positioning column is engaged with the positioning groove.

[0012] As an improvement of the above solution, the interlocking support frame is further provided with a buckle portion, and the motor mounting frame is provided with a buckle groove corresponding to the buckle portion, and the buckle portion is snapped into the buckle groove.

[0013] As an improvement of the above scheme, a motor mounting groove is provided on the motor mounting frame, the reduction motor is installed in the motor mounting groove, one end of the rotating shaft passes through the motor mounting groove and is connected to the rotating connection part of the motor swing arm for driving the motor swing arm to rotate.

[0014] As an improvement of the above-mentioned scheme, the side walls on both sides of the motor mounting groove are respectively provided with a locking portion, and the locking portion abuts against the fixed end of the reduction motor away from the rotating shaft portion; the side walls on both sides of the motor mounting groove are also respectively provided with a locking groove portion staggered with the locking portion; the motor mounting frame is also provided with a motor clip, and the two ends of the motor clip are respectively provided with a buckle end, and the clamping end is snapped into the locking groove portion, and the middle part of the motor clip is adapted to abut against the fixed end of the reduction motor.

[0015] As an improvement to the above solution, a planetary gear set is provided in the reduction motor.

[0016] The utility model also provides a household appliance, comprising a machine body, a door body and the above-mentioned safety door lock device, wherein the door body is installed on the machine body, the safety door lock device is installed in the machine body, and the safety door lock device is adaptively connected to the door body.

[0017] The beneficial effects of implementing the utility model are:

[0018] The utility model adopts an electronic door lock safety device, which realizes the child lock function of the door body through electric control, improves the safety of electrical appliance use, and the overall operation is simple, which can meet the user's convenient use needs. At the same time, through the electric control locking method, it is not easy to unlock and cause the door body to be opened even during transportation, effectively avoiding the risk of damage to the appliance and improving the safety of the appliance. Secondly, the overall structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation structure of the safety door lock device of the utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0021] Figure 3 This is a schematic diagram of the locking state structure of the safety door lock device of the utility model;

[0022] Figure 4 This is a schematic diagram of the unlocked state structure of the safety door lock device of the utility model;

[0023] Figure 5 It is a schematic diagram of the exploded structure of the safety door lock device of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the interlocking support frame of the utility model;

[0025] Figure 7 It is a schematic diagram of the exploded structure of the motor mounting bracket and the locking device of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 2 As shown, a specific embodiment of the utility model provides a safety door lock device, which is used in a household appliance with a door body structure. The device includes a locking device 1 and an interlocking support mechanism 2, wherein the interlocking support mechanism 2 is installed in the household appliance and close to one side of the door body 3 of the household appliance, and a door hook portion 31 is provided on one side of the door body 3; a door lock hole 21 corresponding to the door hook portion 31 is provided on the interlocking support mechanism 2, and the door hook portion 31 is inserted into the door lock hole 21 to close and fix the door body 3 on the household appliance to achieve a closed state of the door body 3; the door hook portion 31 can be moved away from the door lock hole 21 by pulling the handle or grip of the door body 3 to achieve an open state of the door body 3.

[0028] The locking device 1 is arranged on the interlocking support mechanism 2, and the locking device 1 is connected to the main controller in the household appliance. The control unit of the main controller can control the locking device 1 to lock the door hook part 31, that is, to limit the movement of the door hook part 31, so as to realize the child lock locking function; or to release the locking restriction on the door hook part 31, that is, to release the movement restriction of the door hook part 31, so as to realize the child lock unlocking function. The electronic door lock safety structure adopts the electric control method to realize the child lock function of the door body 3, improve the safety of the appliance, and the overall operation method is simple, which can meet the user's convenient use needs. At the same time, through the electric control locking method, even in the process of transportation when the power is off, it is not easy to unlock and cause the door body 3 to be opened, which effectively avoids the risk of damage to the appliance and improves the safety of the appliance.

[0029] Among them, the control part of the main controller is arranged on the outer wall of the household appliance body, and the control part includes but is not limited to a button part or a knob part or a control panel. By controlling the control part, the working state of the locking device 1 can be controlled to realize the child lock locking function or the child lock unlocking function.

[0030] Preferably, the main controller is preferably an MCU controller, but is not limited thereto.

[0031] like Figures 2 to 6As shown, the locking device 1 includes a reduction motor 11 and a motor swing arm 12. The shaft portion 13 of the reduction motor 11 is connected to the rotation connection portion 121 of the motor swing arm 12, and is used to drive the motor swing arm 12 to rotate, so that the locking portion 14 of the motor swing arm 12 locks the door hook portion 31 or releases the locking restriction on the door hook portion 31. When the reduction motor 11 is controlled to be in forward transmission, the motor swing arm 12 is driven to rotate, so that the locking portion 14 rotates to the door lock hole 21 and locks the door hook portion 31. At this time, the movement of the door hook portion 31 is restricted, thereby realizing the child lock locking function; when the reduction motor 11 is controlled to be reversed, the motor swing arm 12 is driven to rotate in the opposite direction, so that the locking portion 14 leaves the door lock hole 21. At this time, the movement of the door hook portion 31 is not restricted, thereby realizing the child lock unlocking function. In the unlocked state, the door body 3 can be manually pulled open to realize the free opening and closing function of the door body 3.

[0032] Further, the interlocking support mechanism 2 includes an interlocking support frame 22 and a motor mounting frame 23 mounted on the interlocking support frame 22, the interlocking support frame 22 is provided with the door lock hole 21; the reduction motor 11 is mounted on the motor mounting frame 23, the rotating connection portion 121 of the motor swing arm 12 is mounted on the positioning shaft 224, and a convex circle is provided on the upper end of the positioning shaft 224. The locking portion 14 of the motor swing arm 12 can move in the door lock hole 21, and is used to limit or release the door hook portion 31 in the door lock hole 21.

[0033] When the reduction motor 11 drives the locking part 14 to rotate into the door lock hole 21, the locking part 14 and the door hook part 31 are both inserted into the door lock hole 21, and the locking part 14 abuts against the inner wall of the door lock hole 21 and the corresponding end surface of the door lock part, so as to limit the door hook part 31 in the door lock hole 21, thereby realizing the child lock locking function. Correspondingly, when the reduction motor 11 drives the locking part 14 to leave the door lock hole 21, the door hook part 31 contacts the limit position and is in an active state, thereby realizing the child lock unlocking function.

[0034] Preferably, a planetary gear set is provided in the reduction motor 11. The planetary gear set can prevent the motor from driving the swing arm to move to achieve child lock locking or child lock unlocking in the absence of a driving command (i.e., when the power is off), thereby preventing the door body 3 from being opened and damaged by collision, thereby effectively avoiding the risk of damage to the electrical appliance and improving the safety of the electrical appliance.

[0035] like Figures 2 to 4 and Figure 6As shown, an inner wall of one side of the door lock hole 21 is provided with an inclined portion 24, and an end portion of the door hook portion 31 is provided with an arcuate abutting portion 311, and the arcuate abutting portion 311 abuts against the inclined portion 24. The arcuate abutting portion 311 can reduce the contact area when sliding against the inclined portion 24, reduce the friction resistance, so that the arcuate abutting portion 311 can slide along the inclined portion 24 to the door lock hole 21 more easily, so that the door hook portion 31 slides along the inclined portion 24 through the arcuate abutting portion 311 and snaps into the door lock hole 21, so that the door body 3 is closed. Among them, the door hook portion 31 has a certain elasticity, so that the door hook portion 31 and the door lock hole 21 are snapped together.

[0036] In order to realize that the motor mounting frame 23 is mounted on the interlocking support frame 22. Figures 6 to 7 As shown, the interlocking support frame 22 is provided with a fixed installation column 221 and a positioning column 222, and the motor mounting frame 23 is provided with a fixed installation groove 231 corresponding to the fixed installation column 221 and a positioning groove 232 corresponding to the positioning column 222; the fixed installation column 221 is engaged with the fixed installation groove 231, and the positioning column 222 is engaged with the positioning groove 232, so that the motor mounting frame 23 is installed on the interlocking support frame 22.

[0037] Among them, the interlocking support frame 22 is also provided with a snap portion 223 extending upward, and the motor mounting frame 23 is provided with a snap groove 233 corresponding to the snap portion 223. The snap portion 223 is snapped into the snap groove 233 to further fix the motor mounting frame 23 on the interlocking support frame 22 to improve the installation firmness.

[0038] like Figures 3 to 5 and Figure 7 As shown, the motor mounting frame 23 is provided with a motor mounting slot 234, and the reduction motor 11 is installed in the motor mounting slot 234. One end of the rotating shaft portion 13 passes through the motor mounting slot 234 and is connected to the rotating connecting portion 121 of the motor swing arm 12, so as to drive the motor swing arm 12 to rotate, so as to realize the child lock locking or child lock unlocking function.

[0039] Furthermore, the side walls on both sides of the motor mounting groove 234 are respectively provided with a locking portion 235, and the locking portion 235 abuts against the fixed end 111 of the reduction motor 11 away from the rotating shaft portion 13 to limit the reduction motor 11; the side walls on both sides of the motor mounting groove 234 are also respectively provided with a locking groove portion 236 staggered with the locking portion 235; the motor mounting frame 23 is also provided with a motor clip 4, and the two ends of the motor clip 4 are respectively provided with a buckle end 41, and the buckle end is snapped into the locking groove portion 236, and the middle part of the motor clip 4 is adapted to abut against the fixed end 111 of the reduction motor 11, so that the reduction motor 11 is fixed in the motor mounting groove 234, so as to prevent the reduction motor 11 from shaking or rotating, and improve the working stability of the motor.

[0040] The utility model also provides a household appliance, comprising a body, a door body 3 and the above-mentioned safety door lock device, wherein the door body 3 is installed on the body, the safety door lock device is installed in the body, and the safety door lock device is adaptively connected to the door body.

[0041] It should be noted that different household appliances have different numbers of door hooks on their doors. For example, if there is a single door hook or two upper and lower door hooks or three door hooks, the child lock function or the child lock unlocking function can be achieved by providing at least one door hook with a safety door lock device for use therewith.

[0042] Among them, household appliances include but are not limited to microwave ovens or washing machines, and other household appliances with door structures can use the above-mentioned safety door lock device to achieve a child lock function or a child lock unlock function.

[0043] In summary, the utility model has a simple overall structure and low cost. By adopting an electronic door lock safety device to realize the child lock function of the door body in an electrically controlled manner, the safety of electrical appliance use is improved, and the overall operation method is simple, which can meet the user's convenient use needs. At the same time, through the electrically controlled locking method, it is not easy to unlock and cause the door body to be opened even during transportation, which effectively avoids the risk of damage to the appliance and improves the safety of the appliance. Secondly, the overall structure is simple and the cost is low.

[0044] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A safety door lock device, used in a household appliance with a door structure, characterized in that: It includes a locking device and an interlocking support mechanism, wherein the interlocking support mechanism is installed in the household appliance and close to one side of the door body of the household appliance, and a door hook portion is provided on one side of the door body; The interlocking support mechanism is provided with a door lock hole corresponding to the door hook portion, and the door hook portion is inserted into the door lock hole to close and fix the door body on the household appliance; The locking device is arranged on the interlocking support mechanism, and the locking device is connected to the main controller in the household appliance. The control unit of the main controller can control the locking device to lock the door hook part or release the locking restriction on the door hook part.

2. The safety door lock device according to claim 1, characterized in that: The locking device includes a reduction motor and a motor swing arm, wherein the rotating shaft portion of the reduction motor is connected to the rotating connection portion of the motor swing arm, and is used to drive the motor swing arm to rotate, so that the locking portion of the motor swing arm locks or releases the locking restriction on the door hook portion.

3. The safety door lock device according to claim 2, characterized in that: The interlocking support mechanism comprises an interlocking support frame and a motor mounting frame mounted on the interlocking support frame, and the interlocking support frame is provided with a positioning shaft and the door lock hole; The reduction motor is mounted on the motor mounting frame, the rotating connection portion of the motor swing arm is mounted on the positioning shaft, and the locking portion of the motor swing arm can move in the door lock hole to limit or release the door hook portion in the door lock hole.

4. The safety door lock device according to claim 3, characterized in that: An inclined portion is provided on one inner wall of the door lock hole, and an arcuate abutting portion is provided at one end of the door hook portion, the arcuate abutting portion abuts against the inclined portion, and the door hook portion is inserted into the door lock hole along the inclined portion through the arcuate abutting portion.

5. The safety door lock device according to claim 3, characterized in that: The interlocking support frame is provided with a fixed installation column and a positioning column, and the motor mounting frame is provided with a fixed installation groove corresponding to the fixed installation column one by one and a positioning groove corresponding to the positioning column one by one; The fixed installation column is connected in a snap-fitting manner with the fixed installation groove, and the positioning column is connected in a snap-fitting manner with the positioning groove.

6. The safety door lock device according to claim 5, characterized in that: The interlocking support frame is also provided with a buckle portion, and the motor mounting frame is provided with a buckle groove corresponding to the buckle portion, and the buckle portion is snapped into the buckle groove.

7. The safety door lock device according to claim 3, characterized in that: The motor mounting frame is provided with a motor mounting slot, the reduction motor is mounted in the motor mounting slot, one end of the rotating shaft portion passes through the motor mounting slot and is connected to the rotating connecting portion of the motor swing arm for driving the motor swing arm to rotate.

8. The safety door lock device according to claim 7, characterized in that: The side walls on both sides of the motor installation groove are respectively provided with a clamping portion, and the clamping portion abuts against the fixed end of the reduction motor away from the rotating shaft portion; The side walls on both sides of the motor installation slot are also respectively provided with a clamping groove portion staggered with the clamping portion; The motor mounting frame is also provided with a motor clip, and both ends of the motor clip are respectively provided with buckle ends, and the buckle ends are snapped into the slot parts, and the middle part of the motor clip is adapted to abut against the fixed end of the reduction motor.

9. The safety door lock device according to any one of claims 2 to 8, characterized in that: A planetary gear set is arranged inside the reduction motor.

10. A household appliance, characterized in that: It comprises a machine body, a door body and a safety door lock device as claimed in any one of claims 1 to 9, wherein the door body is mounted on the machine body, the safety door lock device is mounted in the machine body, and the safety door lock device is adaptably connected to the door body.

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