Push door lock device

Abstract

The push door lock device according to an embodiment of the present invention comprises: a locker fixing a hook and having a first torsion spring provided in a first center to receive a rotational force in a first direction; and a latch rotating around a second center attached to one side, and having a second torsion spring provided to receive a rotational force in a second direction. The locker comprises: a mounting part formed with a first ring and a second ring and having a hook coupled thereto; a locking part formed to protrude at the lower part of the second ring; a locking piece bent at one end of the locking part; and a groove part with a recessed shape on an outer corner. The latch comprises: a first inclined surface which is a corner formed in the direction of the locker; a second inclined surface with is a corner formed in the direction of the locker and is separated from the first inclined surface at a different height; a receiving part in which the locking piece is received to fix the locker; and a protruding piece obliquely bent at one end corner of the receiving part.

Description

Push door lock device

[0001] The present invention relates to a push door lock device, and more specifically, to a push door lock device used in home appliances such as ovens and microwave ovens.

[0002] A variety of home appliances exist in our daily lives. In particular, washing machines, dryers, dishwashers, microwave ovens, and ovens, which require a user to fill them with liquid, have doors installed to keep the contents sealed from the outside world. The door lock, which opens and closes the door, is an essential component of these appliances.

[0003] Recently, various technologies related to door locking devices have been developed. Representative inventions include Korean Patent No. 10-1667916 (Push-and-Push Door Lock Device) and Korean Patent No. 10-1915250 (Manual Door Lock Device).

[0004] A push-and-push door lock device is a door lock device that automatically opens the door when the appliance is turned off without the user having to open the door.

[0005] The push-and-push door lock device is installed inside the main body and includes a release button that releases the binding force of the fixing member by a sliding motion to release the locker, and a drive unit that selectively controls door holding, door locking, and door automatic opening operations by a rotational motion of a rotational shaft equipped with a cam projection on one side.

[0006] A manual door lock device is disclosed that has a simple structure and can be manually operated, unlike the existing method that is operated electronically by a solenoid.

[0007] Push-and-push door locks used in home appliances are complex in operation and frequently prone to failure due to excessive force applied to the torsion spring. Manual door locks, while stable, are inconvenient because they are dependent on human action to open and close the door. Furthermore, the irregular force applied to the device can also cause failure.

[0008] Therefore, a door lock device that implements organic connection between components and various functions is needed.

[0009] The purpose of the present invention is to provide a push door lock device that can be applied to home appliances such as ovens and microwave ovens.

[0010] In addition, the purpose is to provide a push door lock device that has almost no device failure and can be implemented in a compact size.

[0011] In addition, the purpose is to provide a durable push door lock device in which the connection between the parts constituting the device is organic and the movement play of the parts is not large.

[0012] A push door lock device according to an embodiment of the present invention includes a locker that fixes a hook, has a first torsion spring installed in a first center and receives a rotational force in a first direction, and a latch that rotates based on a second center attached to one side and has a second torsion spring installed and receives a rotational force in a second direction, wherein the locker includes a seating portion formed by a first ring and a second ring to which a hook is fastened, a hook portion protrudingly formed at a lower portion of the second ring, a hooking piece having a curved shape at one end of the hooking piece, and a recessed groove portion having a concave shape at an outer edge, and the latch includes a first slope which is an edge formed in the direction of the locker, a second slope which is an edge formed in the direction of the locker and is separated by a different height from the first slope, a receiving portion in which the hooking piece is received so as to fix the locker, and a protruding piece having a shape that is slanted at one edge of the receiving portion.

[0013] In addition, the push door lock device according to an embodiment of the present invention further includes a locking lever having a locking flange that is rotated by a motor and coupled to the home portion, and further includes a first micro switch that detects the operation of the locking lever.

[0014] In addition, the push door lock device according to an embodiment of the present invention further includes a rocker lever having one end that rotates in contact with the second ring, and a second micro switch that detects the closing state of the rocker by movement of the rocker lever.

[0015] The push door lock device according to an embodiment of the present invention can be implemented in a compact size and can be installed in various home appliances.

[0016] Additionally, a push door lock device with less breakdown and stability is provided due to the organic connection between parts.

[0017] Additionally, the risk of device failure is reduced by limiting the load applied to the device due to the push.

[0018] Figure 1 is an internal plan view of a push door lock device according to an embodiment of the present invention.

[0019] Figure 2 is an enlarged view of the inside of a push door lock device according to an embodiment of the present invention.

[0020] Figure 3 is a plan view of a push door lock device according to an embodiment of the present invention.

[0021] Figure 4 is an internal plan view of a push door lock device according to an embodiment of the present invention.

[0022] Figure 5 is a state diagram at the point where the hook is attached to the fixing member.

[0023] Figure 6 is a state diagram at the point where the hook pushes the second ring.

[0024] Figure 7 is a state diagram when the locker is closed.

[0025] Figure 8 is a state diagram when the locker is completely closed.

[0026] Figure 9 is a state diagram showing the rocker beginning to separate from the latch.

[0027] Figure 10 is a diagram showing the state in which the rocker and latch have been separated.

[0028] Specific structural or functional descriptions of embodiments according to the concept of the present invention disclosed in this specification are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and are not limited to the embodiments described in this specification.

[0029] Embodiments according to the concept of the present invention may have various modifications and take various forms, and thus, embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, but rather includes all modifications, equivalents, or alternatives falling within the spirit and technical scope of the present invention.

[0030] While terms such as "first" or "second" may be used to describe various components, these components should not be limited by these terms. These terms are only intended to distinguish one component from another. For example, a first component may be referred to as a "second component," and similarly, a second component may be referred to as a "first component," without departing from the scope of the present invention.

[0031] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. Conversely, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions that describe the relationship between components, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

[0032] The terminology used herein is merely used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in this specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0033] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings attached to this specification. However, the scope of the patent application is not limited or restricted by these embodiments. The same reference numerals in each drawing represent the same elements.

[0035] Figure 1 is an internal plan view of a push door lock device according to an embodiment of the present invention.

[0036] Figure 2 is an enlarged view of the inside of a push door lock device according to an embodiment of the present invention.

[0037] As shown in FIGS. 1 and 2, a push door lock device according to an embodiment of the present invention fixes a hook (20), includes a locker (100) having a first torsion spring (102) installed in a first center (101) to receive a rotational force in a first direction, and a latch (200) that rotates based on a second center (201) attached to one side and has a second torsion spring (202) installed to receive a rotational force in a second direction.

[0038] In FIGS. 1 and 2, the first direction may mean clockwise rotation and the second direction may mean counterclockwise rotation, but is not necessarily limited thereto.

[0039] The push door lock device illustrated in FIGS. 1 and 2 can be formed by having internal components directly or indirectly attached to the base (10).

[0040] The base (10), locker (100), and latch (200) constituting the push door lock device according to an embodiment of the present invention may be made of a hard metal material, but are not necessarily limited thereto, and may be made of a hard plastic material.

[0041] Additionally, depending on the function of the home appliance in which the door lock device is installed, it is desirable for it to be made of a material that is resistant to heat.

[0042] The rocker (100) according to an embodiment of the present invention receives a continuous clockwise rotational force by the first torsion spring (102). When the hook (20) is introduced into the rocker (100), the rocker (100) is forced to apply a counterclockwise rotational force opposite to the clockwise rotational force. Of course, it is expected that the rocker (100) will rotate counterclockwise when the hook (20) is introduced with an external force stronger than the rotational force of the first torsion spring (102).

[0043] In more detail, the above rocker (100) includes a mounting portion (110) formed by a first ring (103) and a second ring (104), a hook portion (120) protruding from the lower portion of the second ring (104), a hook piece (122) having a curved shape at one end of the hook portion (120), and a groove portion (130) having a recessed shape at an outer edge.

[0044] The fixing portion (110) is a portion into which a hook (20) is introduced and fastened. In FIGS. 1 and 2, it is formed in a U shape, but there is no limitation on the shape and it can be implemented in various forms to which a hook (20) introduced from the outside can be fastened.

[0045] It is preferable that the first ring (103) and the second ring (104) are formed as a single piece, and when forming the mounting portion (110), the lengths of the first ring (103) and the second ring (104) may be different from each other.

[0046] A rocker (100) according to an embodiment of the present invention includes a catch (120). The catch (120) is formed as a protrusion protruding from the lower portion of the second ring (104). It is preferable that the catch (120) be manufactured as an integral part with the first ring (103) and the second ring (104) so ​​that it can rotate simultaneously with the rotation of the first ring (103) and the second ring (104).

[0047] In addition, as illustrated in FIGS. 1 and 2, a hook piece (122) having a curved shape is formed at one end of the hook part (120). The hook piece (122) is located at the edge of the hook part (120) and is curved in the opposite direction of the base (10).

[0048] The catch (122) is an area that controls the movement of the rocker (100) by the latch (200), and it is preferable that it be manufactured as an integral part with the catch (120) to be sturdy and solid.

[0049] Furthermore, a recessed groove (130) is formed on the outer edge of the rocker (100). The groove (130) may be formed in a recessed shape with a predetermined depth on the outer periphery of the point where the first ring (103) and the second ring (104) meet, as shown in FIGS. 1 and 2, but is not necessarily limited thereto.

[0050] The latch (200) according to the embodiment of the present invention receives a continuous rotational force in the direction opposite to the first direction, which is the rotational direction of the rocker (100), and the cause of this is the second torsion spring (202) attached to one end of the latch (200).

[0051] As illustrated in FIGS. 1 and 2, a latch (200) according to an embodiment of the present invention includes a first slope (210) which is an edge formed in the direction of the rocker (100), a second slope (220) which is an edge formed in the direction of the rocker (100) and which is separated from the first slope (210) by a different height, a receiving portion (230) in which the engaging portion (122) is received to fix the rocker (100), and a protruding portion (240) having a curved shape at one edge of the receiving portion (230).

[0052] The first slope (210) formed on the latch (200) is formed in the direction of the rocker (100). More specifically, the corner of the latch (200) along which the engaging piece (122) moves with the rotation of the rocker (100) is the first slope (210).

[0053] The second slope (220) is a corner formed in the direction of the rocker (100) like the first slope (210), and more specifically, like the first slope (210), it is a slope on which the catch (122) is secured by the rotation of the rocker (100). The second slope (220) is separated from the first slope (210), and the height at which the first slope (210) is formed and the height at which the second slope (220) is formed are different from each other. Furthermore, as illustrated in FIGS. 1 and 2, the height at which the second slope (220) is formed is designed to be lower than the height at which the first slope (210) is formed.

[0054] A latch (200) according to an embodiment of the present invention has only an open corner region formed by a first slope (210) and a second slope (220), and includes a receiving portion (230) which is an open space in the shape of a hook.

[0055] As illustrated in FIGS. 1 and 2, the receiving portion (230) is a space in which a catch (122) is received to secure the rocker (100). The catch (122) moves in the receiving portion (230), allowing the latch (200) to be engaged with or disengaged from the rocker (100). A more detailed description will be provided later.

[0056] A latch (200) according to an embodiment of the present invention includes a protruding piece (240) having a curved shape at one edge of a receiving portion (230). The protruding piece (240) is shaped to be bent obliquely toward the opposite side of the base (10), as illustrated in FIGS. 1 and 2. That is, the protruding piece (240) has a curved shape that forms a slope with respect to an imaginary surface of the latch (200) formed by the receiving portion (230).

[0057] Each component of the latch (200) may mean a detailed component of the latch (200) formed as an integral part.

[0058] Figure 3 is a plan view of a push door lock device according to an embodiment of the present invention.

[0059] Figure 4 is an internal plan view of a push door lock device according to an embodiment of the present invention.

[0060] A push door lock device according to an embodiment of the present invention includes a locking lever (300) having a locking flange (310) that is rotated by a motor (400) and coupled to a home portion (130).

[0061] As shown in FIGS. 1 and 2, the locking lever (300) is coupled to the base (10) so that one end rotates, and is pushed and rotated by the motor arm (410), so that the locking flange (310) moves toward the rocker (100), and the locking flange (310) is fixed to the groove (130), thereby preventing the rocker (100) from rotating.

[0062] In addition, the locking lever (300) can be rotated to press the first micro switch (320) as shown in FIG. 3 to confirm that the rocker (100) is locked.

[0063] As illustrated in FIG. 4, the push door lock device according to an embodiment of the present invention further includes a rocker lever (500) that rotates while one end is in contact with a second ring (104), and a second micro switch (520) that detects the closed state of the rocker (100) by movement of the rocker lever (500).

[0064] The rocker lever (500) rotates around the third center (510) coupled to the base (10) to press the second micro switch (520). Through this, it is possible to confirm whether the rocker (100) is in a closed or open state.

[0065] That is, when the lock lever (300) is operated, the first micro switch (320) is operated and the rocker (100) can be externally displayed that it is in a locked state, and when the rocker lever (500) is operated, the second micro switch (520) is operated and the rocker (100) can be externally displayed that it is in a closed state.

[0066] In particular, in the case of ovens, a heat cleaning process is periodically performed to heat the oil stuck on the oven to a temperature of 300 degrees or higher during cooking and blow it away into the air. However, some ovens must automatically maintain the oven door in a locked state to prevent it from opening while performing this process. At this time, as shown in FIGS. 2 and 3, the motor (400) rotates and the motor arm (410) pushes the locking lever (300), so that the locking flange is inserted into the groove (130) of the rocker (100), and at the same time, the first micro switch (320) is pressed to confirm that the rocker (100) is locked.

[0067] As illustrated in FIG. 3, a push door lock device according to an embodiment of the present invention includes a housing bracket (600) and a separate bracket (700).

[0068] The housing bracket (600) has a space formed inside where a locker (100) and a latch (200) are mounted, and is connected to the base (10), the fourth center (610), and the fixing member (16).

[0069] In addition, one end of a spring (14) coupled to the outer surface of a fixed rod (12) fixed to a base (10) is coupled to an upper portion of one side of a housing bracket (600), and a fixed member (16) formed nearby is coupled to a housing track (630) formed on the housing bracket (600), so that the housing bracket (600) can rotate at a predetermined angle along the housing track (630) with the fourth center (610) as the center.

[0070] A flange track (620) is formed on the side of the housing bracket (600) so that the previously mentioned locking flange can move.

[0071] The push door lock device has a problem in that if a malfunction occurs while the door is closed, the door cannot be opened. In this case, if the door is pulled with a relatively strong force, the locker (100) is pulled by the hook (20), and the locker (100) is caught on a catch formed in the housing bracket (600).

[0072] When the door is pulled by applying more external force, it rotates based on the fourth center (610) of the housing bracket (600). When it is pulled with a strong force that can overcome the elastic force of the spring (14) on the opposite side of the fourth center (610), the fixing member (16) rises along the housing track (630), causing the rocker (100) to rotate and the hook (20) to come off the first ring (103) of the rocker (100).

[0073] That is, by configuring the housing bracket (600) as in the embodiment of the present invention, the locker (100) and the hook (20) can be separated in an emergency.

[0074] A separate bracket (700) is attached to the upper portion of the housing bracket (600). The separate bracket (700) performs the function of spatially separating the first micro switch (320) and the second micro switch (520). In addition, the locking lever (300) that operates the first micro switch (320) and the rocker lever (500) that operates the second micro switch (520) are also spatially separated by the separate bracket (700). A door lock device having a laminated structure can be implemented through the separate bracket (700), enabling a structurally compact implementation.

[0075] The configuration of a push door lock device according to an embodiment of the present invention has been described above. Below, the closing process and the opening process through pushing of a push door lock device according to an embodiment of the present invention will be described with reference to FIGS. 5 to 10.

[0076] Figure 5 is a state diagram at the point where the hook (20) is fastened to the fixing portion (110).

[0077] Figure 6 is a state diagram at the point where the hook (20) pushes the second ring (104).

[0078] Figure 7 is a state diagram when the locker (100) is closed.

[0079] Figure 8 is a state diagram when the locker (100) is completely closed.

[0080] Figure 9 is a state diagram showing a state in which the rocker (100) begins to separate from the latch (200).

[0081] Figure 10 is a diagram showing the state in which the separation of the locker (100) and the latch (200) is completed.

[0082] As shown in Fig. 5, the hook (20) rotates the rocker (100) while pushing it counterclockwise until the moment the hook (20) is caught on the fixing portion (110) of the rocker (100). The engaging portion (120) of the rocker (100) rotates together, and the engaging piece (122) of the engaging portion comes into contact with the first slope (210) of the latch (200), thereby rotating the latch (200) clockwise.

[0083] As shown in Fig. 6, when the hook (20) pushes the second ring (104) further, the catch (122) moves to the second slope (220) and the latch (200) moves counterclockwise by the second torsion spring (202). The rocker (100) is continuously subjected to a clockwise elastic force by the first torsion spring (102), and as shown in Fig. 6, when the rocker (100) rotates clockwise while the second slope (220) and the catch (122) are in contact, the catch (122) flows into the space of the receiving portion (230) formed in the latch (200).

[0084] As shown in Fig. 7, when the catch (122) of the rocker (100) is introduced into the receiving portion (230), the catch (122) is seated on the protruding portion (240) of the latch (200).

[0085] As shown in Fig. 7, the hook (20) is caught on the locker (100) and is in the process of being closed, and as shown in Fig. 8, the hook (122) is settled on the receiving portion (230) of the latch (200) by the rotational force of the locker (100) in the first direction and the rotational force of the latch (200) in the second direction, so that the door is closed.

[0086] When the door is pushed in the closed state, the hook (20) pushes the second ring (104), and as shown in Fig. 9, the catch (122) slides along the protruding part (240) having an obliquely bent shape, and the catch (122) comes out behind the latch (200).

[0087] When the separation of the locker (100) and the latch (200) is completed, the locker (100) rotates to the open state as shown in Fig. 10, and the hook (20) comes off the mounting portion (110) of the locker (100) to open the door.

[0088] A push door lock device according to an embodiment of the present invention can be opened by pushing using a mechanical shape and a rotational force by a torsion spring.

[0089]

[0090] Although the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible from the described techniques. For example, appropriate results can be achieved even if the described techniques are performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different form than the described method, or are replaced or substituted by other components or equivalents. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. As a push door lock device, A rocker that fixes the hook and has a first torsion spring installed at the first center to receive a rotational force in the first direction; and A latch that rotates based on a second center attached to one side and has a second torsion spring installed to receive a rotational force in a second direction, The above locker A fixing portion formed by the first ring and the second ring and to which the hook is fastened; A hook formed by protruding from the lower part of the second ring; A hook piece having a curved shape at one end of the above hook; It includes a recessed groove on the outer edge, The above latch The first slope is a corner formed in the direction of the rocker; A second slope formed in the direction of the rocker and separated from the first slope by a different height; A receiving portion in which the catch is received to secure the rocker; and A door lock device characterized in that it includes a protruding piece having a slanted shape at one corner of the above-mentioned receiving portion.

2. In paragraph 1, A door lock device further comprising a locking lever having a locking flange that is rotated by a motor and engages the home portion.

3. In paragraph 2, A door lock device further comprising a first micro switch for detecting the operation of the lock lever.

4. In paragraph 1, A rocker lever that rotates while in contact with the second ring; A door lock device characterized in that it further includes a second micro switch that detects the closing state of the locker by movement of the rocker lever.

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