Door lock and household appliance using same

Abstract

The utility model discloses a door lock and a household appliance using the same. Wherein the door lock comprises a door hook, a lock hook and an outer shell, the door hook can enter and exit from the outer shell along a lock opening and is locked with or unlocked from the lock hook, a swing rod capable of supporting the door hook when abutting against the door hook is further installed in the outer shell, and the problem that a door cover cannot be normally opened due to door drooping can be effectively avoided.

Description

[Technical field]

[0001] The utility model relates to the technical field of door locks, in particular to the technical field of door locks which can prevent failure in door opening. [Background technology]

[0002] Existing washing machines usually have a door cover that can open or cover the opening of the box body with a washing chamber, and the box body and the door cover are also locked or unlocked by a locking mechanism. As consumers' demand for different performance of washing machines grows, a number of washing machines with handleless door covers (embedded door covers) have gradually appeared on the market, such as a drum washing machine with publication number CN106758030A, a dishwasher door opening mechanism with announcement number CN209003898U, and a dishwasher with a push door with announcement number CN211818867U. Since this type of door cover has no part for users to insert their fingers and pull the door after closing, most of them are designed with a push door opening structure and / or an electric door opening structure, so that the door opening action can be automatically completed by relying on the door cover's opening force.

[0003] like Figures 1 to 3 As shown in the figure, this type of door cover is prone to sagging due to its own heavy weight. Once the door cover sags, the door hook a installed on the door cover will sag accordingly, causing the door hook a to easily come into contact with the lower side of the lock opening of the shell c (i.e., the lower side of the lock opening of the outer shell c) during the process of detaching from the lock hook b. Figure 2 and Figure 3 The door cover (the part circled at d) contacts the door and generates a large friction force, which in turn causes the problem of door opening failure (the door cover cannot be opened normally), which needs to be solved urgently. [Utility Model Content]

[0004] The purpose of the utility model is to solve the problems in the prior art, to provide a door lock and a household appliance using the door lock, and the door lock can effectively avoid the problem that the door cover cannot be opened normally due to the sagging of the door.

[0005] To achieve the above-mentioned purpose, the utility model proposes a door lock, including a door hook, a lock hook and a shell. The door hook can enter and exit the shell along a lock port and be locked or unlocked with the lock hook. A rocker rod is also installed in the shell to support the door hook when it abuts against the door hook.

[0006] Preferably, the swing rod is obliquely arranged inside the shell to provide an oblique supporting force to the door hook when it abuts against the door hook, and the oblique supporting force can be decomposed into an upward supporting component and a door opening component toward the door cover opening direction.

[0007] Preferably, the swing rod can support the door hook to separate from the lower edge of the lock when the door hook enters and exits the housing to avoid friction between the door hook and the lock.

[0008] Preferably, the swing rod is rotatably connected to the housing.

[0009] Preferably, a spring is further included, and the spring has an elastic tendency to indirectly push the door hook away from the lock hook through the swing rod.

[0010] Preferably, the swing rod is V-shaped and hinged to the housing at the corner. One end of the swing rod is indirectly connected to the housing through a spring, and the other end can abut against the door hook.

[0011] Preferably, a rod body notch for the door hook to insert is provided at one end of the swing rod facing the door hook.

[0012] Preferably, a rod body convex column is provided at one end of the swing rod facing the spring, a housing convex column is provided on the inner wall of the housing, and both ends of the spring are respectively sleeved outside the rod body convex column and the housing convex column.

[0013] Preferably, rod body through grooves are evenly distributed on the rod body of the swing rod.

[0014] A household electrical appliance is installed with the door lock as described above.

[0015] Advantages of the present utility model:

[0016] 1) By installing a swing rod capable of supporting the door hook in the housing, the weight of the sagging door can be pressed on the swing rod, thereby avoiding the frictional resistance of the housing on the door hook at the lock opening during the door opening process and preventing the door cover from being unable to be opened normally;

[0017] 2) By obliquely arranging the swing rod inside the housing, when the swing rod abuts against the door hook, an oblique supporting force can be given to the door hook. On the one hand, the vertically upward supporting component force decomposed from the oblique supporting force is used to lift the door hook, and on the other hand, the horizontally outward door opening component force decomposed from the oblique supporting force is used to act on the door opening;

[0018] 3) By enabling the swing rod to rotate in the housing along the fulcrum, the resistance between the door hook and the swing rod can be further reduced when the door sags;

[0019] 4) By installing a spring in the housing, the elastic force of the spring can be indirectly applied to the door hook through the swing rod to assist in opening the door.

[0020] The features and advantages of the present utility model will be described in detail through embodiments in conjunction with the drawings.

Description of the Drawings

[0021] Figure 1 is the front view of the existing washing machine locking mechanism when locking the door;

[0022] Figure 2 is Figure 1 the sectional view taken along the line A-A of

[0023] Figure 3 It is a schematic diagram of the internal structure of the existing washing machine locking mechanism during the door opening period;

[0024] Figure 4 It is a schematic diagram of the internal structure of the door lock when the door is locked;

[0025] Figure 5 yes Figure 4 An enlarged schematic diagram of point B;

[0026] Figure 6 It is a schematic diagram of the internal structure of the door lock during the door opening period.

[0027] In the figure: 1-door hook, 2-lock hook, 3-rocker, 31-rod notch, 32-rod boss, 33-rod through groove, 4-housing, 41-locking port, 42-housing boss, 5-spring, a-door hook, b-lock hook, c-housing. [Specific implementation method]

[0028] See also Figures 4 to 6 The door lock comprises a door hook 1, a lock hook 2 and a shell 4. The door hook 1 can enter and exit the shell 4 along a lock opening 41 and be locked or unlocked with the lock hook 2. A swing rod 3 is also installed in the shell 4 to support the door hook 1 when it abuts against the door hook 1.

[0029] The swing rod 3 is obliquely arranged inside the housing 4 to provide an oblique supporting force to the door hook 1 when it abuts against the door hook 1. The oblique supporting force can be decomposed into an upward supporting component and a door opening component toward the door cover opening direction.

[0030] The swing rod 3 can support the door hook 1 to separate from the lower edge of the lock hole 41 when the door hook 1 enters and exits the housing 4 to avoid friction between the door hook 1 and the lock hole 41.

[0031] The swing rod 3 is rotatably connected in the housing 4 .

[0032] The door hook 1 further comprises a spring 5 , which has an elastic tendency to indirectly push the door hook 1 to separate from the lock hook 2 through the swing rod 3 .

[0033] The swing rod 3 is V-shaped and is hinged to the housing 4 at a corner. One end of the swing rod 3 is indirectly connected to the housing 4 via a spring 5 and the other end can abut against the door hook 1 .

[0034] The end of the swing rod 3 facing the door hook 1 is provided with a rod body notch 31 for the door hook 1 to be inserted.

[0035] The end of the swing rod 3 facing the spring 5 is provided with a rod body protrusion 32, the inner wall of the housing 4 is provided with a shell protrusion 42, and the two ends of the spring 5 are respectively sleeved outside the rod body protrusion 32 and the shell protrusion 42.

[0036] A household electrical appliance is equipped with a door lock as described above.

[0037] The working process of the present utility model is as follows:

[0038] When locking the door, since the door hook 1 abuts against the inclined swing rod 3 at the notch 31 of the rod body, once the door cover droops, the door hook 1 will apply an obliquely downward pressing force to the swing rod 3 as shown by the arrows in Figure 4 and Figure 5 . As is well known, the action of force is mutual, and the force application point of the swing rod 3 is on the left side of the fulcrum (taking the opening side on the left as an example), then the swing rod 3 can simultaneously apply an obliquely upward supporting force to the door hook 1. On the one hand, this obliquely upward supporting force can be decomposed into an upward supporting component force to lift the door hook 1 and avoid friction between the door hook 1 and the housing 4 at the locking port 41. On the other hand, it can also be decomposed into a leftward opening component force, which is more conducive to opening the door.

[0039] During the door opening process, since the V-shaped swing rod 3 is hinged to the housing 4 at the corner, the swing rod 3 can rotate along the fulcrum, thereby effectively reducing the friction force with the door hook 1. In addition, the spring 5 installed between the swing rod 3 and the housing 4 can also push the swing rod 3 to rotate through the elastic force (the direction of the elastic force is shown by the downward arrows in Figure 4 and Figure 6 ) to play an auxiliary role in opening the door.

[0040] The above embodiments are illustrative of the present utility model, not limiting the present utility model. Any simply transformed scheme of the present utility model belongs to the protection scope of the present utility model.

Claims

1. A door lock, comprising a door hook (1), a lock hook (2) and a housing (4), wherein the door hook (1) can enter and exit the housing (4) along a lock opening (41) and can be locked or unlocked with the lock hook (2), characterized in that: The housing (4) is also provided with a swing rod (3) which can support the door hook (1) when it abuts against the door hook (1).

2. The door lock according to claim 1, characterized in that: The swing rod (3) is obliquely arranged inside the housing (4) to provide the door hook (1) with an oblique supporting force when it abuts against the door hook (1), and the oblique supporting force can be decomposed into an upward supporting force component and a door opening force component in the direction of opening the door cover.

3. The door lock according to claim 2, characterized in that: The swing rod (3) can support the door hook (1) to separate from the lower edge of the lock opening (41) when the door hook (1) enters and exits the housing (4) to avoid friction between the door hook (1) and the lock opening (41).

4. The door lock according to claim 2, characterized in that: The swing rod (3) is rotatably connected in the housing (4).

5. The door lock according to any one of claims 1 to 4, characterized in that: The invention also comprises a spring (5), wherein the spring (5) has an elastic tendency to indirectly push the door hook (1) to separate from the lock hook (2) through the swing rod (3).

6. The door lock according to claim 5, characterized in that: The swing rod (3) is V-shaped and is hinged to the housing (4) at a corner. One end of the swing rod (3) is indirectly connected to the housing (4) via a spring (5) and the other end can abut against the door hook (1).

7. The door lock according to claim 6, characterized in that: One end of the swing rod (3) facing the door hook (1) is provided with a rod body notch (31) into which the door hook (1) can be inserted.

8. The door lock according to claim 6, characterized in that: The end of the swing rod (3) facing the spring (5) is provided with a rod body boss (32), the inner wall of the outer shell (4) is provided with a shell body boss (42), and the two ends of the spring (5) are respectively sleeved outside the rod body boss (32) and the shell body boss (42).

9. Household electrical appliances, characterized in that: A door lock according to any one of claims 1 to 8 is installed.

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