Gear anti-collision mechanism of dish washing machine door lock assembly

Abstract

The utility model relates to the technical field of dish-washing machines, and provides a gear anti-collision mechanism of a dish-washing machine door lock assembly, which comprises a clutch transmission assembly with an elastic connection state and an elastic separation state, a transmission component and a push rod are arranged on the door lock assembly, and the clutch transmission assembly is arranged between the transmission component and the push rod; the clutch transmission assembly is in an elastic connection state, one end of the clutch transmission assembly is in transmission connection with the transmission assembly, and the other end of the clutch transmission assembly is in transmission connection with the push rod; the external force borne by the clutch transmission assembly is larger than the elastic connecting force of the clutch transmission assembly to trigger elastic separation of the clutch transmission assembly, and one end of the clutch transmission assembly is separated from the transmission assembly to prevent the external force from being further transmitted to the push rod and the transmission assembly. In the buckling process of the push rod and the dish washing machine door body, when the door body buckling force is too large, the clutch transmission assembly is triggered to be elastically separated, the door body buckling force is effectively prevented from being transmitted to the push rod and the transmission assembly, and damage to the push rod and the transmission assembly can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to a gear anti-collision mechanism for a dishwasher door lock assembly. Background Technology

[0002] Current dishwasher sliding door structures generally only have the function of opening the door by pushing it open, but lack the function of locking the push rod with the door. This limited functionality necessitates the design of a door lock assembly that allows the push rod to lock with the door. Furthermore, to prevent damage to the transmission structure on the push rod from excessive door locking force, an anti-collision structure is required in the door lock assembly. Utility Model Content

[0003] This utility model proposes a gear anti-collision mechanism for a dishwasher door lock assembly. By setting a clutch transmission assembly with an elastic connection state and an elastic separation state between the push rod and the transmission component of the door lock assembly, when the door body is fastened with excessive force during the process of the push rod fastening with the dishwasher door, the clutch transmission assembly is triggered to elastically separate, effectively preventing the door body fastening force from being transmitted to the push rod and the transmission component, and effectively avoiding damage to the push rod and the transmission component.

[0004] A gear anti-collision mechanism for a dishwasher door lock assembly designed for this purpose includes a clutch transmission assembly disposed on the door lock assembly and having an elastically connected state and an elastically separated state. The door lock assembly is provided with a transmission component and a push rod, and the clutch transmission assembly is disposed between the transmission component and the push rod.

[0005] The clutch transmission assembly is in an elastic connection state, with one end of the clutch transmission assembly being connected to the transmission component and the other end being connected to the push rod.

[0006] When the external force on the clutch transmission assembly is greater than its elastic connection force, the clutch transmission assembly is triggered to elastically separate, and one end of the clutch transmission assembly is disengaged from the transmission component to prevent the external force from being further transmitted to the push rod and the transmission component.

[0007] The clutch transmission assembly can be elastically reset to an elastically connected state after elastic disengagement.

[0008] The push rod is equipped with an elastic locking hook that engages with the dishwasher door. The force exerted by the dishwasher door engaging with the push rod is greater than the force exerted by the elastic connection of the clutch transmission assembly, thereby triggering the elastic disengagement of the clutch transmission assembly.

[0009] The clutch transmission assembly includes a first transmission component, a second transmission component, and a spring. The spring is disposed on the first transmission component, and the clutch transmission assembly is in an elastic connection state. The first transmission component is connected to the second transmission component under the elastic action of the spring. When the clutch transmission assembly is subjected to an external force greater than the elastic force of the spring acting on the first transmission component, the first transmission component and the second transmission component are triggered to elastically separate.

[0010] The first transmission component is provided with a groove for positioning and installing the spring. One end of the spring acts elastically on the groove of the first transmission component, and the other end of the spring acts elastically on the inside of the door lock assembly.

[0011] An axial clutch portion is provided between the first transmission component and the second transmission component, and the clutch transmission assembly is in an elastic connection state. The first transmission component and the second transmission component are connected through the axial clutch portion. When the clutch transmission assembly is in an elastic separation state, the first transmission component axially disengages from the second transmission component along the axial clutch portion.

[0012] The axial clutch part is provided with a guide surface for guiding the first transmission component and the second transmission component to a fitting state.

[0013] The plurality of protrusions and limiting notches are circumferentially arranged between the first transmission member and the second transmission member; when the first transmission member and the second transmission member are elastically connected, the spring presses the first transmission member onto the second transmission member, and the protrusions limit the notches of the second transmission member; when the first transmission member and the second transmission member are triggered to separate, the protrusions disengage from the limiting notches.

[0014] The protrusion and the limiting notch are provided with a matching arc-shaped fitting part, and the protrusion and the limiting notch form point contact, line contact or surface contact through the arc-shaped fitting part.

[0015] The door lock assembly is equipped with a driver, and the driver's drive shaft is connected to the transmission assembly. The driver drives the push rod to perform axial extension and retraction movement on the door lock assembly through the transmission assembly and the clutch transmission assembly.

[0016] The transmission assembly is a gear transmission group, and the clutch transmission assembly is an anti-collision gear group; both the gear transmission group and the anti-collision gear group are rotatably mounted on the door lock assembly.

[0017] The beneficial technical effects of this utility model are as follows:

[0018] The push rod of the door lock assembly is equipped with a clutch transmission assembly that has an elastic connection state and an elastic separation state. When the push rod is engaged with the dishwasher door, if the door engagement force is too large, the clutch transmission assembly is triggered to elastically separate, effectively preventing the door engagement force from being transmitted to the push rod and the transmission assembly, thus effectively avoiding damage to the push rod and the transmission assembly. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the clutch transmission assembly in an elastic connection according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the clutch transmission assembly in an elastically separated state according to an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the clutch transmission assembly in the assembly and disassembly stage of an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the first transmission component according to an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the first transmission component in another orientation according to an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0026] See Figures 1-5 A gear anti-collision mechanism for a dishwasher door lock assembly includes a clutch transmission assembly 2 disposed on the door lock assembly 1 and having an elastically connected state and an elastically separated state. The door lock assembly 1 is provided with a transmission component 3 and a push rod 4, and the clutch transmission assembly 2 is disposed between the transmission component 3 and the push rod 4.

[0027] The clutch transmission assembly 2 is in an elastic connection state. One end of the clutch transmission assembly 2 is connected to the transmission component 3, and the other end of the clutch transmission assembly 2 is connected to the push rod 4.

[0028] The external force on the clutch transmission assembly 2 is greater than its elastic connection force, so as to trigger the clutch transmission assembly 2 to elastically separate. One end of the clutch transmission assembly 2 is disengaged from the transmission component 3 to prevent the external force from being further transmitted to the push rod 4 and the transmission component 3.

[0029] The clutch transmission assembly 2 can be elastically reset to an elastically connected state after elastic separation.

[0030] In this embodiment, the door lock assembly 1 includes upper and lower housings, with a first cavity, a second cavity, and a third cavity provided between the upper and lower housings. The first cavity is located between the second cavity and the third cavity. The first cavity is used to install a push rod 4, which performs axial extension and retraction on the first cavity. The second cavity is used to install a circuit board and a micro switch, and the third cavity is used to install a clutch transmission assembly 2 and a transmission component 3.

[0031] When the push rod 4 is engaged with the dishwasher door, if the door engagement force is too great, the clutch transmission assembly 2 is triggered to elastically disengage, effectively preventing the door engagement force from being transmitted to the push rod 4 and the transmission assembly 3. This effectively avoids damage to the push rod 4 and the transmission assembly 3, effectively protects the push rod 4 and the transmission assembly 3, prevents damage to the door lock assembly 1, and improves the durability and service life of the door lock assembly 1.

[0032] The push rod 4 is provided with an elastic locking hook 5 that engages with the dishwasher door. The force exerted by the dishwasher door engaging the push rod 4 is greater than the force exerted by the elastic connection of the clutch transmission assembly 2, thereby triggering the elastic disengagement of the clutch transmission assembly 2.

[0033] The push rod 4 is equipped with an elastic locking hook 5 that engages with the dishwasher door. This allows the dishwasher door to be pulled away from the elastic locking hook 5 of the push rod 4. Alternatively, the dishwasher door can be rotated and engaged with the elastic locking hook 5 of the push rod 4, thus solving the problem of the push rod 4 independently pushing out the dishwasher door in the prior art.

[0034] In this embodiment, a tension spring is provided on the push rod 4. One end of the tension spring is connected to the elastic locking hook 5, and the other end of the tension spring is connected to the push rod 4. The elastic locking hook 5 is rotatably mounted on the push rod 4. A lock seat 15 is provided on the dishwasher door, and a lock hole is provided on the lock seat 15. When the lock seat of the dishwasher door is engaged along the push rod 4, the lock seat 15 presses the elastic locking hook 5 to rotate. When the elastic locking hook 5 corresponds to the lock hole of the lock seat 15, the elastic locking hook 5 elastically resets and engages with the lock hole of the lock seat 15. A guide slope is provided on the lock seat 15 to cooperate with the elastic locking hook 5. When the dishwasher door is separated from the elastic locking hook 5 along the guide slope under the action of external force, the lock seat 15 presses the elastic locking hook 5, and the elastic locking hook 5 swings and disengages from the lock hole of the lock seat 15, and the dishwasher door is pulled out.

[0035] When the dishwasher door is pulled out and re-engaged with the push rod 4, if the locking force of the dishwasher door is too great, the clutch transmission assembly 2 will be triggered to elastically disengage. The clutch transmission assembly 2 will be in a free state and will be disengaged from the transmission component 3, preventing the transmission component 3 and the push rod 4 from being damaged by excessive locking force of the dishwasher door.

[0036] The clutch transmission assembly 2 includes a first transmission component 6, a second transmission component 7, and a spring 8. The spring 8 is disposed on the first transmission component 6. The clutch transmission assembly 2 is in an elastic connection state. The first transmission component 6 is connected to the second transmission component 7 under the elastic action of the spring 8. When the clutch transmission assembly 2 is subjected to an external force greater than the elastic force of the spring 8 acting on the first transmission component 6, the first transmission component 6 and the second transmission component 7 are elastically separated.

[0037] In this embodiment, the first transmission member 6 and the second transmission member 7 are gears, the transmission assembly 3 is a gear transmission assembly, and the spring 8 is sleeved on the rotating shaft of the first transmission member 6 gear. The spring 8 applies an elastic force to the first transmission member 6, so that the first transmission member 6 and the second transmission member 7 are elastically connected. When the external force is greater than the force of the spring 8 on the first transmission member 6, the first transmission member 6 disengages from the second transmission member 7, and the first transmission member 6 and the second transmission member 7 elastically separate. The first transmission member 6 meshes with the gear of the gear transmission assembly 3, and the second transmission member 7 meshes with the rack of the push rod 4. In this way, when the first transmission member 6 disengages from the second transmission member 7 under a large external force, the push rod 4 and the transmission assembly 3 are prevented from being damaged.

[0038] The first transmission component 6 is provided with a groove 13 for positioning and installing the spring 8. One end of the spring 8 acts elastically on the groove 13 of the first transmission component 6, and the other end of the spring 8 acts elastically on the inside of the door lock assembly 1. In this way, the spring 8 is limited in the axial height, preventing the spring 8 from deviating and ensuring that the clutch transmission assembly 2 maintains elastic connection without being subjected to large external forces.

[0039] An axial clutch portion 9 is provided between the first transmission member 6 and the second transmission member 7. The clutch transmission assembly 2 is in an elastic connection state, and the first transmission member 6 and the second transmission member 7 are connected through the axial clutch portion 9. When the clutch transmission assembly 2 is in an elastic separation state, the first transmission member 6 axially disengages from the second transmission member 7 along the axial clutch portion 9.

[0040] The axial clutch part 9 is provided with a guide surface 12 for guiding the first transmission member 6 and the second transmission member 7 to a fitting state.

[0041] In this embodiment, the guide surface 12 is an inclined surface.

[0042] When the dishwasher door is closed too forcefully, it accidentally triggers the elastic separation of the first transmission component 6 and the second transmission component 7. The guide surface 12 between the first transmission component 6 and the second transmission component 7 is also in a separated state. When the first transmission component 6 and the second transmission component 7 are elastically connected under the action of elasticity, the guide surface 12 of the first transmission component 6 overlaps the guide surface 12 of the second transmission component 7, and the first transmission component 6 and the second transmission component 7 are engaged.

[0043] The plurality of protrusions 10 and limiting notches 11 are circumferentially arranged between the first transmission member 6 and the second transmission member 7; when the first transmission member 6 and the second transmission member 7 are elastically connected, the spring 8 presses the first transmission member 6 onto the second transmission member 7, and the protrusions 10 are limited on the notches 11 of the second transmission member 7. When the first transmission member 6 and the second transmission member 7 are separated, the protrusions 10 disengage from the limiting notches 11.

[0044] The first transmission member 6 and the second transmission member 7 are rotatably mounted on the door lock assembly 1. A matching arc-shaped fitting portion 14 is provided between the protrusion 10 and the limiting notch 11, forming point contact, line contact, or surface contact between the protrusion 10 and the limiting notch 11 through the arc-shaped fitting portion 14. In an elastically connected state, when the first transmission member 6 and the second transmission member 7 rotate, the arc-shaped fitting portion 14 can reduce the rotational friction between them.

[0045] The door lock assembly 1 is equipped with a driver, the drive shaft of the driver is connected to the transmission assembly 3, and the driver drives the push rod 4 to perform axial extension and retraction on the door lock assembly 1 through the transmission assembly 3 and the clutch transmission assembly 2.

[0046] The transmission assembly 3 is a gear transmission group, and the clutch transmission assembly 2 is an anti-collision gear group; both the gear transmission group and the anti-collision gear group are rotatably mounted on the door lock assembly 1.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

[0048] In the above description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In the foregoing description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections using screws, rivets, or welding; detachable connections; or connections formed by metal processing (die casting, deep drawing, lathe machining, etc.) or injection molding; they can also be mechanical or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In the above description of this application, unless otherwise expressly specified and limited, the use of terms such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A gear anti-collision mechanism for a dishwasher door lock assembly, characterized in that: The clutch transmission assembly (2) is provided on the door lock assembly (1) and has a flexible connection state and a flexible separation state. The door lock assembly (1) is provided with a transmission component (3) and a push rod (4). The clutch transmission assembly (2) is located between the transmission component (3) and the push rod (4). The clutch transmission assembly (2) is in an elastic connection state. One end of the clutch transmission assembly (2) is connected to the transmission component (3), and the other end of the clutch transmission assembly (2) is connected to the push rod (4). The external force on the clutch transmission assembly (2) is greater than its elastic connection force, so as to trigger the clutch transmission assembly (2) to elastically separate, and one end of the clutch transmission assembly (2) is disengaged from the transmission component (3) to prevent the external force from being further transmitted to the push rod (4) and the transmission component (3); The clutch transmission assembly (2) can be elastically reset to the elastic connection state after elastic separation.

2. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 1, characterized in that: The push rod (4) is provided with an elastic locking hook (5) that engages with the dishwasher door. The force of the dishwasher door engaging with the push rod (4) is greater than the force of the clutch transmission assembly (2) elastic connection, so as to trigger the clutch transmission assembly (2) to elastically disengage.

3. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 1, characterized in that: The clutch transmission assembly (2) includes a first transmission component (6), a second transmission component (7), and a spring (8). The spring (8) is disposed on the first transmission component (6). The clutch transmission assembly (2) is in an elastic connection state. The first transmission component (6) is connected to the second transmission component (7) under the elastic action of the spring (8). When the clutch transmission assembly (2) is subjected to an external force greater than the elastic force of the spring (8) acting on the first transmission component (6), the first transmission component (6) and the second transmission component (7) are elastically separated.

4. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 3, characterized in that: The first transmission component (6) is provided with a groove (13) for positioning and installing the spring (8). One end of the spring (8) acts elastically on the groove (13) of the first transmission component (6), and the other end of the spring (8) acts elastically on the inside of the door lock assembly (1).

5. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 3, characterized in that: An axial clutch part (9) is provided between the first transmission member (6) and the second transmission member (7). The clutch transmission assembly (2) is in an elastic connection state. The first transmission member (6) and the second transmission member (7) are connected through the axial clutch part (9). When the clutch transmission assembly (2) is in an elastic separation state, the first transmission member (6) is axially disengaged from the second transmission member (7) along the axial clutch part (9).

6. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 5, characterized in that: The axial clutch part (9) is provided with a guide surface (12) for guiding the first transmission member (6) and the second transmission member (7) to be in a fitting state.

7. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 5, characterized in that: The axial clutch part (9) includes a plurality of protrusions (10) circumferentially arranged between the first transmission member (6) and the second transmission member (7) and a limiting notch (11); when the first transmission member (6) and the second transmission member (7) are elastically connected, the spring (8) presses the first transmission member (6) onto the second transmission member (7), and the protrusions (10) are limited to the notch (11) of the second transmission member (7). When the first transmission member (6) and the second transmission member (7) are triggered to separate, the protrusions (10) disengage from the limiting notch (11).

8. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 7, characterized in that: The first transmission member (6) and the second transmission member (7) are rotatably mounted on the door lock assembly (1). A matching arc-shaped fitting part (14) is provided between the protrusion (10) and the limiting notch (11). When the first transmission member (6) and the second transmission member (7) are in an elastic connection state, the protrusion (10) and the limiting notch (11) form point contact, line contact or surface contact through the arc-shaped fitting part (14).

9. The gear anti-collision mechanism of the dishwasher door lock assembly according to claim 1, characterized in that: The door lock assembly (1) is equipped with a driver, the drive shaft of the driver is connected to the transmission assembly (3), and the driver drives the push rod (4) to make axial extension and retraction movements on the door lock assembly (1) through the transmission assembly (3) and the clutch transmission assembly (2).

10. The gear anti-collision mechanism of the dishwasher door lock assembly according to any one of claims 1-9, characterized in that: The transmission assembly (3) is a gear transmission group, and the clutch transmission assembly (2) is an anti-collision gear group; both the gear transmission group and the anti-collision gear group are rotatably mounted on the door lock assembly (1).

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