Door lock and dishwasher

Abstract

The utility model discloses a door lock and a dishwasher. The door lock is used on the dishwasher. The push-pull rod of the door lock extends out of the mounting shell; the first locking member is rotatably mounted in the mounting shell, the first elastic member is connected to the first locking member and allows the first locking member to reset after rotation; the second locking member is radially slidably mounted in the mounting shell along the first locking member and abuts against the first locking member, the first end of the second elastic member is connected or abuts against the mounting shell, the second end of the second elastic member is connected or abuts against the second locking member and provides elastic force for the second locking member; the first locking member is provided with a protrusion, and the two sides of the protrusion are respectively an unlocking point and a closing point; the first locking member abuts against the push-pull rod and is locked with the locking groove, and the second locking member abuts against the closing point to be in a locking state; the first locking member completely withdraws from the locking groove, and the second locking member abuts against the unlocking point to be in an unlocking state. When the machine door is closed, the door lock can be stuck to prevent it from being bounced open, and the control system can sense the switch state of the machine door.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a door lock and a dishwasher. Background Art

[0002] When washing dishes, the dishwasher needs to close the door securely to prevent water from spraying out, and the control system needs to sense the door open and close state. The existing dishwasher door has the problem of not being securely closed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a door lock and a dishwasher.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a door lock used on a dishwasher, comprising a mounting shell, a push-pull rod with a locking groove, a first locking member, a second locking member, a first elastic member and a second elastic member, wherein the push-pull rod partially or completely extends out of the mounting shell;

[0005] The first locking member is rotatably mounted in the mounting shell, and the first elastic member is connected to the first locking member and enables the first locking member to return to its original position after rotation;

[0006] The second locking member is slidably installed in the mounting shell along the radial direction of the first locking member and abuts against the first locking member, the first end of the second elastic member is connected to or abuts against the mounting shell, and the second end of the second elastic member is connected to or abuts against the second locking member and provides elastic force for the second locking member;

[0007] The first locking member is provided with a protrusion near the second locking member, and the two sides of the protrusion are respectively an unlocking point and a closing point; the first locking member abuts against the push-pull rod and is locked with the locking groove, and the second locking member abuts against the closing point to be in a locked state; the first locking member completely withdraws from the locking groove, and the second locking member abuts against the unlocking point to be in an unlocked state.

[0008] Preferably, in the door lock described in the present invention, the first locking member includes a locking body provided with the protrusion, a rotating connection portion rotatably connected to the mounting shell, an abutment portion abutted against the end of the first end of the push-pull rod, and a locking portion locked with the locking groove of the push-pull rod, the rotating connection portion is arranged through the locking body, and the abutment portion and the locking portion are respectively arranged at intervals on the locking body opposite to the protrusion.

[0009] Preferably, in the door lock described in the present invention, the abutment portion includes a first arc segment concave toward the locking portion and a contact segment extending outward from the first arc segment, the surface shape of the contact segment matches the end shape of the first end of the push-pull rod so that the two are stably abutted, and the first arc segment is connected to the locking body and smoothly transitions to the contact segment.

[0010] Preferably, in the door lock described in the present invention, the locking portion includes a second arc segment concave toward the abutting portion and a second locking segment abutting against the locking groove of the push-pull rod, and the second arc segment is connected to the locking body and smoothly transitions with the second locking segment.

[0011] Preferably, in the door lock described in the utility model, the first locking member is provided with a mounting groove and a foot groove which are interconnected, the mounting groove is provided in the locking body and surrounds the outer periphery of the rotating connecting part, and the foot groove is provided in the locking part;

[0012] The first elastic member is a torsion spring, comprising an integrated elastic body, a free end and a fixed end. The elastic body is installed in the installation groove, the free end is installed in the foot groove, and the fixed end abuts against the installation shell.

[0013] Preferably, in the door lock described in the present invention, the second locking member includes a locking head abutting against the first locking member and a mounting section slidably mounted with the mounting shell, one end of the mounting section close to the first locking member is connected to the locking head, and one end of the mounting section away from the first locking member abuts against the second elastic member.

[0014] Preferably, in the door lock described in the present invention, the door lock further comprises a micro switch, which is installed in the mounting shell and is connected when abutting against the first locking member.

[0015] Preferably, in the door lock described in the utility model, the first locking member further comprises a contact portion, and the contact portion is arranged outside the rotating connection portion or the locking body and rotates synchronously;

[0016] The length of the contact portion along the radial direction of the first locking member is greater than the distance between the rotating connection portion 33 and the micro switch.

[0017] Preferably, in the door lock described in the present invention, the mounting shell includes an outer shell fixedly connected to the door body, a rotating shaft rotatably connected to the first locking member, two mounting seats supporting the rotating shaft, and a sliding groove slidably connected to the second locking member, the two mounting seats are spaced apart in the axial direction of the first locking member, the rotating shaft is fixedly mounted on the two mounting seats, and the axial direction of the sliding groove is perpendicular to the axial direction of the rotating shaft.

[0018] The utility model also constructs a dishwasher, comprising a dishwasher body with an opening, a door body and any one of the door locks described above, wherein the door body is arranged corresponding to the opening and is rotatably connected to the dishwasher body, and the door lock is installed inside the door body;

[0019] The push-pull rod is connected to the dishwasher body, the first locking member abuts against the push-pull rod and is locked with the locking groove to be in a door-closed state, and the first locking member completely withdraws from the locking groove to be in a door-opened state.

[0020] By implementing the utility model, the following beneficial effects are achieved:

[0021] The door lock of the utility model can reliably get stuck when the machine door is closed to prevent it from bouncing open, and can allow the control system to sense the open and close state of the machine door.

[0022] The dishwasher of the utility model includes a door lock, which can reliably lock the door when it is closed to prevent it from springing open. When washing dishes, the door can be reliably closed to prevent water inside from spraying out. In addition, the dishwasher can allow a control system to sense the open and close state of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0024] Figure 1 1 is a structural schematic diagram of a dishwasher according to an embodiment of the utility model, and the diagram shows a closed door state of the dishwasher;

[0025] Figure 2 This utility model Figure 1 A schematic diagram of a dishwasher with one door opening position, in which the push-pull rod is completely extended outside the mounting housing of the door lock;

[0026] Figure 3 This utility model Figure 1 Schematic diagram of the overall structure of the middle door lock;

[0027] Figure 4 This utility model Figure 3 Schematic diagram of the structure of the middle door lock in the locked state;

[0028] Figure 5 This utility model Figure 3 Structural diagram of the unlocking state (unlocking moment) of the middle door lock;

[0029] Figure 6 This utility model Figure 3 A schematic structural diagram of the first locking member in FIG. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0034] See also Figures 1 to 6 An embodiment of the utility model discloses a dishwasher, which includes a dishwasher body 100 with an opening, a door body 200 and a door lock 300. The door body 200 is arranged corresponding to the opening and is rotatably connected to the dishwasher body 100. The door lock 300 is installed inside the door body 200.

[0035] The door lock 300 includes a mounting shell 1, a push-pull rod 2 with a locking groove 21, a first locking member 3, a second locking member 4, a first elastic member 5, a second elastic member 6 and a micro switch 7. The push-pull rod 2 partially or completely extends out of the mounting shell 1, and the push-pull rod 2 is connected to the dishwasher body 100. Figure 1 As shown, the first locking member 3 abuts against the push-pull rod 2 and is locked with the locking groove 21 to form a closed state of the dishwasher. Figure 5As shown, the first locking member 3 is completely withdrawn from the locking groove 21, which is the door opening state of the dishwasher, and the door opening state refers to the door opening moment. Figure 1 and Figure 5 As shown in , part of the push-pull is located inside the mounting shell 1. Figure 2 As shown, after the door body 200 is opened, the push-pull rod 2 is completely extended out of the mounting shell 1.

[0036] like Figures 3 to 5 As shown, the first locking member 3 is rotatably installed in the mounting shell 1, and the first elastic member 5 is connected to the first locking member 3 and allows the first locking member 3 to reset after rotation. The second locking member 4 is slidably installed in the mounting shell 1 along the radial direction of the first locking member 3 and abuts against the first locking member 3, the first end of the second elastic member 6 is connected or abuts against the mounting shell 1, and the second end of the second elastic member 6 is connected or abuts against the second locking member 4 and provides elastic force for the second locking member 4.

[0037] The first locking member 3 is provided with a protrusion 32 near the second locking member 4, and the two sides of the protrusion 32 are respectively an unlocking point and a locking point. The micro switch 7 is installed in the mounting shell 1 and is connected when it abuts against the first locking member 3. The connection or disconnection of the micro switch 7 can identify the switch lock state of the door lock 300. As shown in FIG. 4, the first locking member 3 abuts and communicates with the push-pull rod 2, and is locked with the locking groove 21, and the second locking member 4 abuts against the locking point to be in the locking state. At this time, the first locking member 3 abuts against the micro switch 7. Figure 5 As shown, the first locking member 3 is completely withdrawn from the locking groove 21, and the second locking member 4 is in contact with the unlocking point to be in the unlocking state. At this time, the first locking member 3 leaves the micro switch 7 and is disconnected.

[0038] in, Figure 4 The locked state of the door lock 300 corresponds to Figure 1 The door of the dishwasher is closed. Figure 5 The unlocked state of the door lock 300 corresponds to the open state of the dishwasher.

[0039] Furthermore, if Figure 3 As shown, the mounting shell 1 includes an outer shell 11 fixedly connected to the door body 200, a rotating shaft 12 rotatably connected to the first locking member 3, two mounting seats 13 supporting the rotating shaft 12, and a sliding groove 14 slidably connected to the second locking member 4. The two mounting seats 13 are spaced apart in the axial direction of the first locking member 3, the rotating shaft 12 is fixedly mounted on the two mounting seats 13, and the axial direction of the sliding groove 14 is perpendicular to the axial direction of the rotating shaft 12.

[0040] Furthermore, if Figure 6As shown, the first locking member 3 includes a locking body 31 provided with a protrusion 32, a rotating connection portion 33 rotatably connected to the mounting shell 1, an abutting portion 34 abutting against the end of the first end of the push-pull rod 2, a locking portion 35 locked with the locking groove 21 of the push-pull rod 2, and a contact portion 38 abutting against the micro switch 7. The rotating connection portion 33 is provided through the locking body 31, and the abutting portion 34 and the locking portion 35 are respectively provided at intervals on the locking body 31 opposite to the protrusion 32. The rotating connection portion 33 is sleeved on the rotating shaft 12 to realize rotation and thus drive the locking body 31, and the contact portion 38 is provided on the outside of the rotating connection portion 33 or the locking body 31 and rotates synchronously, and the length of the contact portion 38 along the radial direction of the first locking member 3 is greater than the distance between the rotating connection portion 33 and the micro switch 7.

[0041] Furthermore, the abutment portion 34 includes a first arc segment 341 that is concave toward the locking portion 35 and a contact segment 342 that extends outward from the first arc segment 341. The surface shape of the contact segment 342 matches the end shape of the first end of the push-pull rod 2 so that the two are stably abutted. The first arc segment 341 is connected to the locking body 31 and smoothly transitions with the contact segment 342.

[0042] Furthermore, the locking portion 35 includes a second arc segment 351 concave toward the abutting portion 34 and a second locking segment 352 abutting against the locking groove 21 of the push-pull rod 2. The second arc segment 351 is connected to the locking body 31 and smoothly transitions with the second locking segment 352 to prevent jamming with the locking groove 21 during rotation.

[0043] Furthermore, the first elastic member 5 is a torsion spring, including an integrated elastic body, a free end and a fixed end (not shown in the figure). In order to install the first elastic member 5, the first locking member 3 is provided with an interconnected mounting groove 36 and a foot groove 37, the mounting groove 36 is arranged in the locking body 31 and is arranged around the outer periphery of the rotating connection part 33, and the foot groove 37 is arranged in the locking part 35. The elastic body is installed in the mounting groove 36, the free end is installed in the foot groove 37, and the fixed end is abutted against the mounting shell 1, so that the first locking member 3 can be rotated to the original position by the elastic force of the first elastic member 5 after rotation. It can be understood that in some other embodiments, the first elastic member 5 can be other forms of elastic members, as long as they can achieve the reset of the first locking member 3 after rotation, such as a spring, and then a corresponding mounting structure is provided on the first locking member 3.

[0044] Furthermore, if Figure 4 and Figure 5As shown, the second locking member 4 includes a locking head 41 abutting against the first locking member 3 and a mounting section 42 slidably mounted on the mounting shell 1, the end of the mounting section 42 close to the first locking member 3 is connected to the locking head 41, and the end of the mounting section 42 away from the first locking member 3 abuts against the second elastic member 6. Preferably, in another embodiment, an installation space is provided inside the mounting section 42, and the second elastic member 6 can be provided in the internal space of the mounting section 42, the first end of the second elastic member 6 abuts against the inner bottom of the mounting section 42, the second end of the second elastic member 6 abuts against the locking head 41, the locking head 41 is slidably connected to the mounting section 42, and the locking head 41 is always partially located inside the mounting section 42.

[0045] The method of using the utility model is as follows: to unlock the door in the locked state, the door is pulled outward by external force, first the first locking member 3 rotates, and the locking portion 35 gradually withdraws from the locking groove 21 of the push-pull rod 2 by rotating, and when the locking portion 35 completely withdraws from the locking groove 21, that is, when the second locking member 4 abuts against the door opening point 321, the door lock 300 is opened, that is, Figure 5 The door body 200 continues to open by pulling the door outwards with external force, and the first locking member 3 gradually moves away from the push-pull rod 2 until the push-pull rod 2 is completely outside the mounting shell 1. Figure 2 One of the door opening positions shown.

[0046] When the door is locked in the unlocked state, the door is pushed inward by external force. First, the abutting portion 34 of the first locking member 3 abuts against the push-pull rod 2. Further, due to the reaction force of the push-pull rod 2, the first locking member 3 rotates, and then the locking portion 35 gradually enters the locking groove 21. When the first locking member 3 rotates to the closing point 322 and abuts against the second locking member 4, complete locking is achieved, and the first locking member 3 is prevented from reversing under the abutment of the second locking member 4, that is, Figure 4 The locked state and Figure 1 The closed state.

[0047] By implementing the utility model, the following beneficial effects are achieved:

[0048] The door lock of the utility model can be reliably locked when the machine door is closed to prevent it from bouncing open.

[0049] The dishwasher of the utility model comprises a door lock, which can reliably get stuck when the machine door is closed to prevent it from springing open. When washing dishes, the machine door can be reliably closed to prevent water inside from spraying out.

[0050] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A door lock (300) for a dishwasher, characterized in that: It comprises a mounting shell (1), a push-pull rod (2) provided with a locking groove (21), a first locking member (3), a second locking member (4), a first elastic member (5) and a second elastic member (6), wherein the push-pull rod (2) partially or completely extends out of the mounting shell (1); The first locking member (3) is rotatably mounted in the mounting shell (1), and the first elastic member (5) is connected to the first locking member (3) and enables the first locking member (3) to return to its original position after rotation; The second locking member (4) is slidably installed in the mounting shell (1) along the radial direction of the first locking member (3) and abuts against the first locking member (3); the first end of the second elastic member (6) is connected to or abuts against the mounting shell (1); the second end of the second elastic member (6) is connected to or abuts against the second locking member (4) and provides elastic force for the second locking member (4); The first locking member (3) is provided with a protrusion (32) near the second locking member (4), and the two sides of the protrusion (32) are respectively an unlocking point and a closing point; the first locking member (3) abuts against the push-pull rod (2) and is locked with the locking groove (21), and the second locking member (4) abuts against the closing point to be in a locked state; the first locking member (3) completely withdraws from the locking groove (21), and the second locking member (4) abuts against the unlocking point to be in an unlocked state.

2. The door lock (300) according to claim 1, characterized in that: The first locking member (3) comprises a locking body (31) provided with the protrusion (32), a rotating connection portion (33) rotatably connected to the mounting shell (1), an abutting portion (34) abutting against the end portion of the first end of the push-pull rod (2), and a locking portion (35) locked with the locking groove (21) of the push-pull rod (2), the rotating connection portion (33) being arranged through the locking body (31), the abutting portion (34) and the locking portion (35) being arranged at intervals on the locking body (31) opposite to the protrusion (32).

3. The door lock (300) according to claim 2, characterized in that: The abutment portion (34) comprises a first arc segment (341) which is concave toward the locking portion (35) and a contact segment (342) which extends outward from the first arc segment (341). The surface shape of the contact segment (342) matches the end shape of the first end of the push-pull rod (2) so that the two are stably abutted. The first arc segment (341) is connected to the locking body (31) and smoothly transitions to the contact segment (342).

4. The door lock (300) according to claim 2, characterized in that: The locking portion (35) comprises a second arc segment (351) concave toward the abutting portion (34) and a second locking segment (352) abutting against the locking groove (21) of the push-pull rod (2), and the second arc segment (351) is connected to the locking body (31) and smoothly transitions to the second locking segment (352).

5. The door lock (300) according to claim 2, characterized in that: The first locking member (3) is provided with a mounting groove (36) and a foot groove (37) which are interconnected, the mounting groove (36) being provided in the locking body (31) and surrounding the outer periphery of the rotating connection portion (33), and the foot groove (37) being provided in the locking portion (35); The first elastic member (5) is a torsion spring, comprising an integrated elastic body, a free end and a fixed end; the elastic body is installed in the installation groove (36), the free end is installed in the foot groove (37), and the fixed end abuts against the installation shell (1).

6. The door lock (300) according to claim 1, characterized in that: The second locking member (4) comprises a locking head (41) abutting against the first locking member (3) and a mounting section (42) slidably mounted on the mounting shell (1); an end of the mounting section (42) close to the first locking member (3) is connected to the locking head (41), and an end of the mounting section (42) away from the first locking member (3) abuts against the second elastic member (6).

7. The door lock (300) according to any one of claims 2 to 5, characterized in that: The door lock (300) further comprises a micro switch (7), wherein the micro switch (7) is installed in the installation shell (1) and is connected to the first locking member (3) when it abuts against the first locking member (3).

8. The door lock (300) according to claim 7, characterized in that: The first locking member (3) further comprises a contact portion (38), wherein the contact portion (38) is arranged outside the rotating connection portion (33) or the locking body (31) and rotates synchronously; The length of the contact portion (38) along the radial direction of the first locking member (3) is greater than the distance between the rotating connection portion (33) and the micro switch (7).

9. The door lock (300) according to any one of claims 1 to 6, characterized in that: The mounting shell (1) comprises an outer shell (11) fixedly connected to the door body (200), a rotating shaft (12) rotatably connected to the first locking member (3), two mounting seats (13) supporting the rotating shaft (12), and a sliding groove (14) slidably connected to the second locking member (4), the two mounting seats (13) being spaced apart in the axial direction of the first locking member (3), the rotating shaft (12) being fixedly mounted on the two mounting seats (13), and the axial direction of the sliding groove (14) is perpendicular to the axial direction of the rotating shaft (12).

10. A dishwasher, characterized in that: The dishwasher comprises a main body (100) provided with an opening, a door body (200) and a door lock (300) according to any one of claims 1 to 9, wherein the door body (200) is arranged corresponding to the opening and is rotatably connected to the main body (100), and the door lock (300) is installed inside the door body (200); The push-pull rod (2) is connected to the dishwasher body (100); the first locking member (3) abuts against the push-pull rod (2) and is locked with the locking groove (21) to be in a door-closed state; the first locking member (3) completely withdraws from the locking groove (21) to be in a door-opened state.

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