Door lock structure for household appliance and household appliance

Abstract

The door lock structure comprises a lock rod, a connecting piece, a protruding piece, a driving mechanism and an elastic piece, the power output end of the driving mechanism is connected with the first position of the protruding piece in a driving mode and used for driving the protruding piece to rotate around the axis of the first position of the protruding piece, and the elastic piece is connected with the connecting piece. Therefore, the first part of the convex piece pushes the lock rod to move towards the locking part until the first end of the lock rod and the locking part are in a locked state; the elastic piece acts on the lock rod, and the elastic piece enables the lock rod to always have the trend that the lock rod moves in the direction away from the locking part to abut against the second part of the protruding piece, and then the first end of the lock rod is disengaged from the state of being locked with the locking part. The defect that in the prior art, a first driver needs to be arranged on the door plate is overcome, influences of the thickness of the door body are avoided, and universality is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a door lock structure for household appliances and the household appliances. Background Art

[0002] For boxes with functional inner cavities, such as steamers, ovens, dishwashers, etc., due to functional requirements, a door body that can open or cover the opening is usually set at the opening of the box, and during the use of the box, the door body needs to be locked relative to the box through a door lock structure. For example, the Chinese utility model patent with patent number CN202022033167.1 (publication number CN214006807U) discloses a "door lock device for a cleaning machine", which includes a matching lock tongue and a lock hook, the lock tongue is arranged in the door body of the cleaning machine, and the lock hook is arranged in the slot body of the cleaning machine, characterized in that it also includes a first driver for driving the lock tongue, a second driver for driving the lock hook to move up and down, and a control circuit board electrically connected to the first driver and the second driver, the lock hook has a lock slot on the lock tongue, and the first driver can drive the lock tongue to move forward and backward relative to the lock slot, wherein the first driver is a telescopic motor with a transmission gear, and the second driver is a push rod motor.

[0003] Although the above patent can realize the automatic opening and closing of the door body, the first driver and the second driver are complex in structure and prone to deviation and damage. In addition, the door panels corresponding to different models of household appliances have different weights, and there is a difference in the force used when opening and closing the door and the degree of locking with the lock hook. The first driver needs to be adjusted according to the door panel, which has poor versatility.

[0004] Therefore, it is necessary to further improve the existing door lock structure. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a door lock structure for household appliances which is not affected by the weight of the door body so as to achieve a higher compatibility, in view of the current status of the above-mentioned prior art.

[0006] The second technical problem to be solved by the utility model is to provide a household appliance with the above door lock structure.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a door lock structure for household appliances, comprising:

[0008] A locking rod, which is used to be mounted on a first wall plate of a housing of a household appliance;

[0009] It is characterized by also including:

[0010] A connecting piece, which is used to be relatively fixed on the door body of the household appliance, and the connecting piece has a locking portion;

[0011] A convex member, whose first position off-center is constrained on the first wall plate, the first position is located on the side of the lock rod away from the locking portion, the outer peripheral wall of the convex member acts on the second end of the lock rod, and the portion of the outer peripheral wall of the convex member away from the first position is the first part, and the portion close to the first position is the second part;

[0012] a driving mechanism, wherein a power output end of the driving mechanism is connected to the first position of the protruding member, and is used to drive the protruding member to rotate around the axis of the first position, so that the first part of the protruding member pushes the locking rod to move toward the locking portion until the first end of the locking rod is in a locked state with the locking portion; and

[0013] An elastic member acts on the locking rod, and the elastic member makes the locking rod always have a tendency to move away from the locking portion until it abuts against the second part of the protruding member, thereby causing the first end of the locking rod to be out of the locked state with the locking portion.

[0014] The locking portion may be a locking hole opened on the connecting piece, or a locking hook may be provided on the connecting piece, and a locking tongue cooperating with the locking hook may be provided at the first end of the locking rod. However, from the perspective of structural simplicity and convenience, preferably, the locking portion is a locking hole opened on the connecting piece, and the locking hole is located on the movement path of the locking rod. When in the locked state, the first end of the locking rod is inserted into the locking hole.

[0015] Preferably, the connecting member is a locking piece extending toward the housing, the locking rod intersects with the extending direction of the locking piece and extends in the left-right direction, and the axis of the first position of the protruding member extends in the thickness direction of the first wall plate. In addition, the locking rod may extend along the arrangement direction of the door body and the housing, while the connecting member extends along the door body.

[0016] There are various structural forms of the driving mechanism, as long as it can realize the rotation of the protrusion. It can be in the form of a single motor or in the form of a push rod motor and a connecting rod assembly. However, preferably, the driving mechanism is a motor, and the output shaft of the motor extends along the thickness direction of the first wall panel. The output shaft of the motor is installed at the first position of the protrusion, and the axis of the output shaft is the axis of the first position.

[0017] Preferably, the locking rod and the protrusion are located on the outer wall surface of the first wall panel.

[0018] In order to facilitate the protrusion to steadily push the locking rod to move, the end of the second end of the locking rod has an extension portion whose outer peripheral wall matches the outer peripheral wall of the protrusion.

[0019] In order to facilitate the function of the elastic member, a mounting plate is provided at the position of the first wall panel corresponding to the locking rod, a through hole is provided on the mounting plate for the locking rod to pass through, and the outer peripheral wall of the locking rod has a flange on the portion located between the first position of the protruding member and the mounting plate. The elastic member is a spring sleeved on the periphery of the locking rod, and the two ends of the spring can respectively resist the mounting plate and the flange.

[0020] There are many structural forms of the protrusion, which can be in the form of a cam, other eccentric wheels, or a triangle with smoothly rounded corners. However, preferably, the protrusion is a cam, and the outer peripheral wall of the cam has a laterally extending protrusion, and at least a portion of the outer peripheral edge of the protrusion is the first part.

[0021] Specifically, the outer peripheral wall of the convex portion includes two straight line segments and an arc segment located between the two straight line segments and smoothly connected to the two straight line segments. The straight line segments are smoothly connected to the corresponding positions of the outer peripheral wall of the cam. The two straight line segments gradually incline toward each other in the direction away from the first position. The second part includes the position of the straight line segment of the convex portion away from the arc segment and the part of the cam except the convex portion. When in the locked state, the arc segment abuts against the second end of the locking rod.

[0022] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a household appliance, including a casing, a door body and a door lock structure, the casing has a chamber with an opening inside, the door body is installed at the opening to open and close the opening, and is characterized in that: the door lock structure is the door lock structure described above.

[0023] Preferably, the door lock structure is located outside the chamber.

[0024] The chamber may have an opening at the top or at the front. As one of the preferred embodiments, the chamber has the opening at the front, the first wall panel is the top wall panel of the casing, and the door lock structure is located above the casing.

[0025] As any preferred embodiment of the above scheme, the household appliance is any one of a washing machine, a steamer, a steamer-oven integrated machine, a steamer-microwave integrated machine and a steamer-oven-microwave integrated machine. Preferably, the household appliance is a washing machine.

[0026] Compared with the prior art, the advantages of the present invention are: in the door lock structure, the connecting piece is fixed on the door body of the household appliance, and the driving mechanism drives the convex piece to rotate, so that the convex piece acts on the second end of the locking rod and then drives the locking rod to move toward the locking part until it is locked with the locking part, that is, the door body is in a locked state; when the door needs to be opened, the convex piece rotates to the second part of its outer peripheral wall close to the first position corresponding to the second end of the locking rod, and under the action of the elastic member, the locking rod moves away from the locking part until it is against the second part. At this time, the locking rod is disengaged from the locking part to unlock the door body. The whole process is easy to operate, which overcomes the need to set a first driver on the door panel in the background technology, and is not affected by the thickness of the door body, and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial structural schematic diagram of this embodiment;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0029] Figure 3 for Figure 1 A cross-sectional view of

[0030] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part I in the middle. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 4 As shown, the household appliance of this embodiment is a washing machine. The household appliance includes a housing 61, a door body 62 and a door lock structure. The housing 61 has a chamber 610 with a front opening inside, and the opening can also be located at the top of the chamber 10. The door body 62 is installed at the opening to open and close the opening. In this embodiment, the lower end of the door body 62 can be rotatably arranged on the housing around an axis extending in the left and right directions.

[0033] The door lock structure is located outside the chamber 610. In this embodiment, the door lock structure is located above the housing 61. The door lock structure includes a lock rod 1, a connecting member, a protruding member, a driving mechanism and an elastic member. Among them, the lock rod 1 is installed on the first wall plate 611 of the housing 61 of the household appliance. In this embodiment, the first wall plate 611 is the top wall plate of the housing 61, and the lock rod 1, the protruding member, the driving mechanism and the elastic member are all installed on the outer wall surface of the first wall plate 611.

[0034] The connecting member is used to be relatively fixed on the door body 62 of the household appliance, and the connecting member has a locking portion. Specifically, the connecting member is a locking piece 2 extending toward the housing 61, and the locking piece 2 in this embodiment extends backward. The locking portion is a lock hole 21 provided on the connecting member. The extension direction of the lock rod 1 intersects with the extension direction of the locking piece 2, and extends in the left-right direction.

[0035] The first position 30 of the protrusion off the center is constrained on the first wall plate 611. The first position 30 is located on the side of the lock rod 1 away from the locking part. The outer peripheral wall of the protrusion acts on the second end of the lock rod 1. The part of the outer peripheral wall of the protrusion away from the first position 30 is the first part, and the part close to the first position 30 is the second part. Specifically, the protrusion is a cam 3, and the outer peripheral wall of the cam 3 has a convex portion 31 extending laterally outward. At least part of the outer peripheral edge of the convex portion 31 is the first part. In this embodiment, the outer peripheral wall of the convex portion 31 includes two straight segments 311 and an arc segment 312 located between the two straight segments 311 and connected to both of them in a smooth transition. The straight segment 311 is connected to the corresponding position of the outer peripheral wall of the cam 3 in a smooth transition. The two straight segments 311 gradually tilt toward each other in the direction away from the first position 30. The second part includes the position of the straight segment 311 of the convex portion 31 away from the arc segment 312 and the part of the cam 3 other than the convex portion 31. In addition, the end of the second end of the locking rod 1 has an extension portion 12 whose outer peripheral wall matches the outer peripheral wall of the cam 3 .

[0036] The power output end of the driving mechanism is connected to the first position 30 of the cam 3 and is used to drive the cam 3 to rotate around the axis of the first position 30, so that the first part of the cam 3 pushes the locking rod 1 to move toward the locking hole until the first end of the locking rod 1 is inserted into the locking hole 21 and is in a locked state. The aforementioned locking hole 21 is located on the movement path of the locking rod 1. In this embodiment, in the locked state, the arc segment 312 abuts against the second end of the locking rod 1. The aforementioned driving mechanism is a motor 4, and the output shaft 41 of the motor 4 extends along the thickness direction of the first wall plate 611. In this embodiment, the output shaft 41 extends vertically, and the output shaft 41 of the motor 4 is installed at the first position 30 of the protrusion, and the axis of the output shaft 41 is the axis of the first position 30.

[0037] The elastic member acts on the lock rod 1, and the elastic member makes the lock rod 1 always have a tendency to move in a direction away from the locking portion until it abuts against the second part of the protruding member, and then the first end of the lock rod 1 is separated from the locked state with the lock hole 21. The first wall plate 611 is provided with a mounting plate 612 at a position corresponding to the lock rod 1, and the mounting plate 612 is provided with a through hole through which the lock rod 1 passes. The outer peripheral wall of the lock rod 1 has a flange 11 on the portion located between the first position 30 of the protruding member and the mounting plate 612. The elastic member is a spring 5 sleeved on the outer periphery of the lock rod 1, and the two ends of the spring 5 can respectively abut against the mounting plate 612 and the flange 11.

[0038] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A door lock structure for household appliances, comprising: A locking rod (1) for being mounted on a first wall plate (611) of a housing (61) of a household appliance; It is characterized in that Also included are: A connecting piece, which is used to be relatively fixed on a door body (62) of a household appliance, and the connecting piece has a locking portion; a convex member, wherein a first position (30) offset from the center is constrained on the first wall plate (611), the first position (30) being located on a side of the locking rod (1) away from the locking portion, the outer peripheral wall of the convex member acting on the second end of the locking rod (1), the portion of the outer peripheral wall of the convex member away from the first position (30) being the first portion, and the portion close to the first position (30) being the second portion; A driving mechanism, whose power output end is drivingly connected to the first position (30) of the protruding member, and is used to drive the protruding member to rotate around the axis of the first position (30), so that the first part of the protruding member pushes the locking rod (1) to move toward the locking portion until the first end of the locking rod (1) is in a locked state with the locking portion; and An elastic member acts on the locking rod (1), which causes the locking rod (1) to always have a tendency to move in a direction away from the locking portion until it abuts against the second part of the protruding member, thereby causing the first end of the locking rod (1) to be out of a locked state with the locking portion.

2. The door lock structure according to claim 1, characterized in that: The locking portion is a locking hole (21) provided on the connecting member, the locking hole (21) is located on the movement path of the locking rod (1), and in a locked state, the first end of the locking rod (1) is inserted into the locking hole (21).

3. The door lock structure according to claim 1, characterized in that: The connecting member is a locking piece (2) extending toward the housing (61), the locking rod (1) intersects with the extension direction of the locking piece (2) and extends along the left-right direction, and the axis of the first position (30) of the protrusion extends along the thickness direction of the first wall plate (611).

4. The door lock structure according to claim 1, characterized in that: The driving mechanism is a motor (4), the output shaft (41) of the motor (4) extends along the thickness direction of the first wall plate (611), and the output shaft (41) of the motor (4) is installed at the first position (30) of the protruding part, and the axis of the output shaft (41) is the axis of the first position (30).

5. The door lock structure according to claim 1, characterized in that: The locking rod (1) and the protruding piece are located on the outer wall surface of the first wall plate (611).

6. The door lock structure according to claim 1, characterized in that: The end portion of the second end of the locking rod (1) has an extension portion (12) whose outer peripheral wall matches the outer peripheral wall of the protruding part.

7. The door lock structure according to claim 1, characterized in that: The first wall plate (611) is provided with a mounting plate (612) at a position corresponding to the locking rod (1); the mounting plate (612) is provided with a through hole through which the locking rod (1) passes; the outer peripheral wall of the locking rod (1) has a flange (11) on a portion between the first position (30) of the protruding part and the mounting plate (612); the elastic part is a spring (5) sleeved on the outer periphery of the locking rod (1); the two ends of the spring (5) can respectively abut against the mounting plate (612) and the flange (11).

8. The door lock structure according to any one of claims 1 to 7, characterized in that: The convex part is a cam (3), and the outer peripheral wall of the cam (3) has a convex part (31) extending laterally outward, and at least a part of the outer peripheral edge of the convex part (31) is the first part.

9. The door lock structure according to claim 8, characterized in that: The outer peripheral wall of the protrusion (31) includes two straight segments (311) and an arc segment (312) located between the two straight segments (311) and smoothly connected to both of them. The straight segment (311) is smoothly connected to the corresponding position of the outer peripheral wall of the cam (3). The two straight segments (311) gradually tilt toward each other in a direction away from the first position (30). The second part includes the position of the straight segment (311) of the protrusion (31) away from the arc segment (312) and the part of the cam (3) other than the protrusion (31). In the locked state, the arc segment (312) abuts against the second end of the locking rod (1).

10. A household appliance, comprising a housing (61), a door (62) and a door lock structure, wherein the housing (61) has a chamber (610) with an opening inside, and the door (62) is installed at the opening to open and close the opening, characterized in that: The door lock structure is the door lock structure described in any one of claims 1 to 9.

11. The household appliance according to claim 10, characterized in that: The door lock structure is located outside the chamber (610).

12. The household appliance according to claim 11, characterized in that: The front side of the chamber (610) has the opening, the first wall panel (611) is the top wall panel of the casing (61), and the door lock structure is located above the casing (61).

13. The household appliance according to claim 10, characterized in that: The household appliance is a cleaning machine.

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