Magnetic control unlocking pivoting mechanism of dish washing machine

Abstract

The utility model discloses a magnetic control unlocking pivoting mechanism of a dish washing machine. The magnetic control unlocking pivoting mechanism comprises a shell, a dish basket, a push-pull pivoting assembly and a limiting plate. When tableware needs to be loaded or taken, the bowl basket is pulled, the bowl basket drives the limiting plate, the limiting plate drives the sliding rod to move towards the opening side of the shell, and therefore the bowl basket is pulled out; after the bowl basket is pulled out, the bowl basket is lifted upwards, at the moment, the swing arm rotates around the rotating point of the fixed plate to drive the sliding rail, the sliding rod and the limiting plate to ascend, and therefore the bowl basket is lifted. Along with the rotation of the swing arm, the limiting column enters the limiting groove; when the swing arm rotates to a preset angle, the bowl basket is lifted to a preset height, and the limiting column reaches a preset limiting point, the limiting block extends out to block the limiting groove, so that the limiting column is limited on the limiting point of the limiting groove, the bowl basket is locked, and the bowl basket is fixed at the preset height. No matter the bowl basket in the locking state is pushed or pulled, the locking cannot be unlocked, so that the situation that the bowl basket is unlocked in advance due to mistaken pulling or mistaken pushing of the bowl basket is avoided, and the user experience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a magnetically controlled unlocking pivoting mechanism for a dishwasher. Background Art

[0002] A dishwasher is a household appliance that replaces manual washing of tableware such as bowls, dishes, cups, plates, spoons, etc. It replaces the traditional manual dishwashing mode, reduces people's labor intensity, and saves dishwashing time. Therefore, dishwashers are favored by more and more families.

[0003] Existing dishwashers generally include a housing and a dish basket. To facilitate loading or taking out tableware, the dish basket is usually designed as a drawer-type dish basket so that the dish basket can be pulled out of the housing. At the same time, since there is a water pump and a cleaning system inside the dishwasher and it needs to be connected to a water source, the dishwasher is usually installed at a low position for easy drainage. For this reason, those skilled in the art design the dish basket as a liftable dish basket to reduce the bending amplitude when loading or taking out tableware, thereby reducing fatigue. After pulling out and lifting the dish basket, the dish basket is usually pulled or pushed to pull the limit post into or push it out of the limit groove to lock the dish basket. When unlocking, the dish basket is pulled or pushed again to pull the limit post out of or push it into the limit groove to unlock the dish basket. However, during the process of locking the dish basket and loading or taking out tableware, the dish basket is often accidentally pulled or pushed, resulting in premature unlocking of the dish basket, thus reducing the user experience. Therefore, a magnetically controlled unlocking pivoting mechanism for a dishwasher is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a magnetically controlled unlocking pivoting mechanism for a dishwasher to solve the above problems.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A magnetically controlled unlocking pivoting mechanism for a dishwasher, comprising:

[0007] A housing, one side of the housing is open, and a dish basket is arranged in the inner cavity of the housing;

[0008] A push-pull pivoting assembly, including a fixing plate fixed on the inner side wall of the housing, a swing arm rotatably connected to one end of the fixing plate, a slide rail rotatably connected to the other end of the swing arm, and a sliding rod slidably connected in the slide rail; a limit post is arranged on the swing arm;

[0009] A limit plate, fixed on the sliding rod, the dish basket is fixed on one side of the limit plate, a limit groove is arranged on the other side of the limit plate, and a retractable limit block is arranged in the limit groove. When the swing arm swings upward and the limit post enters the limit point of the limit groove, the limit block extends out to block the limit groove.

[0010] Optionally, the limiting groove is provided with a through hole, and the limiting block is telescopically arranged in the through hole;

[0011] On one side of the limiting plate away from the limiting groove, a mounting seat is arranged, a spring is arranged on the mounting seat, and the other end of the spring is connected to the limiting block; the side surface of the limiting block facing the entrance of the limiting groove is an inclined surface.

[0012] Optionally, the limiting block is an iron block, and an electromagnetic disk is arranged on one side of the mounting seat away from the limiting block;

[0013] A handle is arranged on the bowl basket, and a magnetic control switch electrically connected to the electromagnetic disk is arranged on the handle.

[0014] Optionally, a first groove is arranged on the lower end surface of the limiting block, the cross section of the first groove is T-shaped, a convex block corresponding to the first groove is arranged on the limiting plate, and the limiting block can slide on the convex block through the first groove.

[0015] Optionally, a second groove is arranged on the limiting block, and one end of the spring is connected to the bottom wall surface of the second groove.

[0016] Optionally, the swing arm includes a first swing arm and a second swing arm which are parallel to each other, and the transfer point of the first swing arm and the second swing arm forms a parallelogram.

[0017] Optionally, an air spring is arranged on the fixed plate, one end of the first swing arm close to the fixed plate has an extension part, the telescopic end of the air spring is arranged on the extension part, and the air spring is rotationally connected to the first swing arm.

[0018] Optionally, a guiding groove is further arranged on one side of the limiting plate, a guiding block is arranged at the entrance of the guiding groove, and a guiding pin corresponding to the guiding groove is arranged on the swing arm.

[0019] Compared with the prior art, the utility model has the following beneficial effects: When it is necessary to load or take tableware, pull out the bowl basket, the bowl basket drives the limiting plate, and the limiting plate drives the sliding rod to move towards the opening side of the housing, so as to realize the extraction of the bowl basket; after the bowl basket is pulled out, lift the bowl basket upwards. At this time, the swing arm rotates around the rotation point with the fixed plate, driving the slide rail, the sliding rod and the limiting plate to rise, so as to lift the bowl basket. As the swing arm rotates, the limiting column enters the limiting groove; when the swing arm rotates to a predetermined angle, the bowl basket is lifted to a predetermined height, and the limiting column reaches a predetermined limiting point. At this time, the limiting block extends out to block the limiting groove, so that the limiting column is restricted at the limiting point of the limiting groove, thereby locking the bowl basket and fixing the bowl basket at a predetermined height. Whether pushing or pulling the locked bowl basket, the lock cannot be released, thus avoiding accidental pulling or pushing of the bowl basket and causing the bowl basket to be unlocked in advance, greatly improving the user experience. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0022] Figure 1 is a schematic structural diagram of the magnetic control unlocking pivot mechanism of the dishwasher of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the housing of the magnetic control unlocking pivot mechanism of the dishwasher of the present invention;

[0024] Figure 3 is a front view of the push-pull pivot assembly and the limit plate of the present invention;

[0025] Figure 4 is a structural diagram of the movement tracks of the guide pin and the limit post on the limit plate of the present invention;

[0026] Figure 5 is a partial sectional view of the limit plate of the present invention;

[0027] Figure 6 is a schematic structural diagram when the bowl basket of the present invention is lifted to a predetermined height.

[0028] Illustration: 10, housing; 20, bowl basket; 21, handle; 22, magnetic control switch; 30, push-pull pivot assembly; 31, fixing plate; 32, swing arm; 321, first swing arm; 322, second swing arm; 33, slide rail; 34, sliding rod; 35, limit post; 36, gas spring; 37, guide pin; 40, limit plate; 41, limit groove; 42, limit block; 43, mounting seat; 44, spring; 45, electromagnetic disk; 46, convex block; 47, guide groove; 48, guide block. Detailed Description of the Embodiments

[0029] In order to make the invention purpose, features and advantages of the present utility model more obvious and understandable, the following will combine the drawings in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present 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 should not be construed as a limitation to the present utility model. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be an intermediate component present at the same time.

[0031] The following will further illustrate the technical solutions of the present utility model in conjunction with the drawings and through specific embodiments.

[0032] Refer to Figures 1 to 5 , the embodiment of the present utility model provides a magnetically controlled unlocking pivoting mechanism for a dishwasher, including a housing 10, a bowl basket 20, a push-pull pivoting assembly 30 and a limiting plate 40. The housing 10 is in the shape of a cuboid, and the inner cavity of the housing 10 is provided with a bowl basket 20 for loading tableware. One side of the housing 10 is open, and the bowl basket 20 can be moved out of the housing 10 through this opening.

[0033] The number of the push-pull pivoting assemblies 30 is two groups, which are respectively arranged on the inner side walls of the housing 10 adjacent to the opening. Each group of push-pull pivoting assemblies 30 includes a fixing plate 31, a swing arm 32, a slide rail 33 and a sliding rod 34. The fixing plate 31 is fixed on the inner side wall of the housing 10; one end of the swing arm 32 is rotatably connected to the fixing plate 31, and the other end is rotatably connected to the slide rail 33, and a limiting column 35 is provided on the swing arm 32; a sliding rod 34 is slidably connected in the slide rail 33. It should be noted that in the initial state (when the bowl basket 20 is located in the inner cavity of the housing 10), the axis of the slide rail 33 is parallel to the bottom wall surface of the housing 10, and when the swing arm 32 rotates around its connection point with the fixing plate 31, the axis of the slide rail 33 is always parallel to the bottom wall surface of the housing 10, that is, the sliding rod 34 is always parallel to the bottom wall surface of the housing 10.

[0034] The limiting plate 40 is fixed on the sliding rod 34 and is arranged at one end of the sliding rod 34 away from the opening of the housing 10 in the initial state. The bowl basket 20 is fixed on one side of the limiting plate 40 away from the side wall of the housing 10, and a limiting groove 41 corresponding to the limiting post 35 is arranged on one side of the limiting plate 40 close to the side wall of the housing 10. When the bowl basket 20 is pulled out, the sliding rod 34 is pulled out through the limiting plate 40; when the bowl basket 20 is lifted, when the swing arm 32 is driven to rotate by the limiting plate 40, the sliding rod 34 and the slide rail 33, the limiting post 35 enters the limiting groove 41. A retractable limiting block 42 is arranged in the limiting groove 41. After the limiting post 35 enters the limiting point of the limiting groove 41, the limiting block 42 extends out to block the limiting groove 41, so as to lock the bowl basket 20.

[0035] Specifically, when it is necessary to load or take out tableware, the bowl basket 20 is pulled out. The bowl basket 20 drives the limiting plate 40, and the limiting plate 40 drives the sliding rod 34 to move towards the opening side of the housing 10, so as to realize the pulling out of the bowl basket 20; after the bowl basket 20 is pulled out, the bowl basket 20 is lifted upwards. At this time, the swing arm 32 rotates around the rotation point with the fixed plate 31, driving the slide rail 33, the sliding rod 34 and the limiting plate 40 to rise, so as to lift the bowl basket 20. As the swing arm 32 rotates, the limiting post 35 enters the limiting groove 41; when the swing arm 32 rotates to a predetermined angle and the bowl basket 20 is lifted to a predetermined height, the limiting post 35 reaches the predetermined limiting point. At this time, the limiting block 42 extends out to block the limiting groove 41, so that the limiting post 35 is restricted at the limiting point of the limiting groove 41, thereby locking the bowl basket 20 and fixing the bowl basket 20 at a predetermined height. Whether the locked bowl basket 20 is pushed or pulled, the lock cannot be released, thus avoiding the premature unlocking of the bowl basket 20 caused by accidentally pulling or pushing the bowl basket 20, and greatly improving the user experience.

[0036] Furthermore, the limiting groove 41 is provided with a through hole, and the limiting block 42 can be retracted and extended in the through hole. The width of the limiting block 42 is greater than the difference between the diameter of the limiting post 35 and the width of the limiting groove 41. Preferably, the width of the limiting block 42 is slightly less than the groove width of the limiting groove 41; when the limiting block 42 extends out, the distance between the highest point of the limiting block 42 (the part of the limiting block 42 protruding from the bottom wall surface of the limiting groove 41 is defined as the protruding part, and the point with the largest distance between the protruding part and the bottom wall surface of the limiting groove 41 is the highest point) and the bottom wall surface of the limiting groove 41 is greater than the distance between the limiting post 35 and the bottom wall surface of the limiting groove 41. Preferably, when the limiting block 42 extends out, the highest point of the limiting block 42 and the side surface of the limiting plate 40 are on the same plane; when the limiting block 42 retracts, the highest point of the limiting block 42 and the bottom wall surface of the limiting groove 41 are on the same plane.

[0037] On one side of the limit plate 40 away from the limit groove 41, there is an installation seat 43, and the installation seat 43 is erected. A spring 44 is fixedly arranged on the installation seat 43, and the other end of the spring 44 is fixedly connected to the limit block 42. When the spring 44 is in the natural state, the limit block 42 is in the protruding state; when the limit block 42 receives a force pointing to the spring 44, the spring 44 is compressed and the limit block 42 retracts.

[0038] The side of the limit block 42 facing the entrance of the limit groove 41 is an inclined surface. When the bowl basket 20 is lifted and the limit post 35 enters the limit groove 41, the limit post 35 continuously approaches the limit block 42; when the limit post 35 contacts the limit block 42 and continues to move, the limit post 35 presses the side of the limit block 42 and generates a force on the limit block 42 pointing to the spring 44, thereby compressing the spring 44 and realizing the retraction of the limit block 42; when the limit post 35 passes over the limit block 42, the limit block 42 protrudes under the action of the spring 44, thereby blocking the limit groove 41. At this time, the swing arm 32 rotates to a predetermined angle, the bowl basket 20 is lifted to a predetermined height, the limit post 35 reaches a predetermined limit point, and since the limit block 42 blocks the limit groove 41, the limit post 35 cannot return along the original path, and the swing arm 32 cannot swing back, that is, the swing arm 32 is locked, thereby locking the bowl basket 20 and fixing the bowl basket 20 at a predetermined height. At this time, whether the bowl basket 20 is pushed or pulled, the lock cannot be released, thus avoiding the premature unlocking of the bowl basket 20 caused by accidentally pulling or pushing the bowl basket 20, greatly improving the user experience. In addition, when the bowl basket 20 is lifted to a predetermined height, the spring 44 returns from the compressed state to the natural state, generating a sound. After the user hears the sound, they can determine that the bowl basket 20 has reached the predetermined height and will not continue to lift the bowl basket 20, further enhancing the user experience.

[0039] The limit block 42 is an iron block, and an electromagnetic disk 45 is arranged on one side of the installation seat 43 away from the limit block 42. A handle 21 is arranged on the bowl basket 20, and a magnetic control switch 22 electrically connected to the electromagnetic disk 45 is arranged on the handle 21. When the loading or taking of tableware is completed, the magnetic control switch 22 is turned on, and the electromagnetic disk 45 generates a suction force on the limit block 42, thereby compressing the spring 44 and the limit block 42 retracts, and the limit groove 41 is unblocked. At this time, the limit post 35 can return along the original path, the swing arm 32 can swing back, and the bowl basket 20 can descend, thereby unlocking the bowl basket 20.

[0040] Further, a first groove is provided on the lower end surface of the limit block 42, and the first groove is located on both sides of the connection point between the spring 44 and the limit block 42. The cross-section of the first groove is T-shaped, and a convex block 46 corresponding to the first groove is arranged on the limit plate 40. The limit block 42 can slide on the convex block 46 through the first groove. Through the design of the groove and the convex block 46, the stability of the limit block 42 is greatly increased.

[0041] The limiting block 42 is provided with a second groove, and one end of the spring 44 is connected to the bottom wall surface of the second groove. By sleeving a part of the spring 44 into the second groove, the original length of the spring 44 can be increased, thereby reducing the pressure change rate of compressing the spring 44 when the limiting block 42 retracts. Optionally, the cross-sectional area of the mounting seat 43 is smaller than the cross-sectional area of the second groove, so that during the retraction process of the limiting block 42, the mounting seat 43 can enter the second groove, thereby improving the space utilization rate.

[0042] Further, the swing arm 32 includes a first swing arm 321 and a second swing arm 322 that are parallel to each other, and the transfer points of the first swing arm 321 and the second swing arm 322 form a parallelogram. For easy understanding, the transfer points of the first swing arm 321 and the second swing arm 322 on the fixed plate 31 are defined as point A and point B, and the transfer points of the first swing arm 321 and the second swing arm 322 on the slide rail 33 are defined as point C and point D, and AB is parallel to CD. In the initial state (when the bowl basket 20 is located in the inner cavity of the housing 10), the axis of the slide rail 33 is parallel to the bottom wall surface of the housing 10; when the parallelogram formed by ABCD rotates around AB, based on the principle of the parallelogram, CD is always parallel to AB. Since AB is fixed, CD still remains parallel to the bottom wall surface of the housing 10 during the rotation process, so that the axis of the slide rail 33 is always parallel to the bottom wall surface of the housing 10, and further, when the bowl basket 20 is lifted by the rotation of the swing arm 32, the bottom surface of the bowl basket 20 is always parallel to the bottom surface of the housing 10.

[0043] Further, the fixed plate 31 is provided with a gas spring 36. One end of the first swing arm 321 close to the fixed plate 31 has an extension part, and the telescopic end of the gas spring 36 is arranged on the extension part, and the gas spring 36 is rotationally connected to the first swing arm 321. In the initial state, the axis of the gas spring 36 is above the transfer point of the first swing arm 321 and the fixed plate 31; when the first swing arm 321 rotates and the axis of the gas spring 36 changes from above the transfer point of the first swing arm 321 and the fixed plate 31 to below, the gas spring 36 extends, and the power required for the rotation of the first swing arm 321 can be provided.

[0044] Further, a guiding groove 47 is also provided on one side of the limiting plate 40. A guiding block 48 is arranged at the entrance of the guiding groove 47, and a guiding pin 37 corresponding to the guiding groove 47 is arranged on the swing arm 32. When the bowl basket 20 is pulled out of the housing 10, the bowl basket 20 drives the limiting plate 40 and the sliding rod 34 to move in the opening direction of the housing 10 ( Figure 3 the arrow direction in is the moving direction of the limiting plate 40 and the sliding rod 34, and the guiding block 48 and the guiding pin 37 are on the same horizontal line). As the limiting plate 40 moves, the guiding block 48 on the limiting plate 40 contacts the guiding pin 37 on the swing arm 32 (the guiding pin 37 is located at Figure 4Point a in). When the bowl basket 20 is continuously pulled, that is, a tensile force is continuously applied to the sliding rod 34 and the limiting plate 40, the guiding block 48 generates a thrust on the swing arm 32 through the guiding pin 37, pushing the swing arm 32 to rotate; at the same time, the guiding surface of the guiding block 48 is inclined towards the guiding groove 47, and the guiding pin 37 enters the guiding groove 47 under the guidance of the guiding block 48. During the process of the swing arm 32 rotating from the start to a predetermined angle, the guiding pin 37 moves from Figure 4 Point a in the direction of the arrow (the arrow in the guiding groove 47) to point b; the limiting post 35 moves from Figure 4 Point c in the direction of the arrow (the arrow passing through the limiting groove 41) to point d. It should be noted that when the axis of the gas spring 36 is below the transfer point of the first swing arm 321 and the fixing plate 31, and the load of the bowl basket 20 is relatively light, the elastic force of the gas spring 36 can make the swing arm 32 rotate automatically, thereby realizing the automatic elevation of the bowl basket 20.

[0045] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetically controlled unlocking pivot mechanism for a dishwasher, characterized in that: include: A shell (10), one side of the shell (10) being open, and an inner cavity of the shell (10) being provided with a bowl basket (20); The push-pull pivot assembly (30) comprises a fixed plate (31) fixed to the inner side wall of the housing (10), a swing arm (32) one end of which is rotatably connected to the fixed plate (31), the other end of the swing arm being rotatably connected to a slide rail (33), and a slide rod (34) being slidably connected inside the slide rail (33); a limit post (35) is provided on the swing arm (32); A limit plate (40) is fixed on the sliding rod (34); the bowl basket (20) is fixed on one side of the limit plate (40); a limit groove (41) is provided on the other side of the limit plate (40); a retractable limit block (42) is provided in the limit groove (41); when the swing arm (32) swings upward and the limit column (35) enters the limit point of the limit groove (41), the limit block (42) extends out to block the limit groove (41).

2. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 1, characterized in that: The limiting groove (41) is provided with a through hole, and the limiting block (42) can be retracted in the through hole; A mounting seat (43) is provided on a side of the limiting plate (40) away from the limiting groove (41); a spring (44) is provided on the mounting seat (43); the other end of the spring (44) is connected to the limiting block (42); and the side surface of the limiting block (42) facing the entrance of the limiting groove (41) is an inclined surface.

3. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 2, characterized in that: The limit block (42) is an iron block, and an electromagnetic disk (45) is provided on a side of the mounting seat (43) away from the limit block (42); The bowl basket (20) is provided with a handle (21), and the handle (21) is provided with a magnetically controlled switch (22) electrically connected to the electromagnetic disk (45).

4. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 2, characterized in that: The lower end surface of the limiting block (42) is provided with a first groove, the cross section of the first groove is T-shaped, the limiting plate (40) is provided with a protrusion (46) corresponding to the first groove, and the limiting block (42) can slide on the protrusion (46) through the first groove.

5. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 2, characterized in that: The limiting block (42) is provided with a second groove, and one end of the spring (44) is connected to the bottom wall surface of the second groove.

6. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 1, characterized in that: The swing arm (32) comprises a first swing arm (321) and a second swing arm (322) which are parallel to each other, and a transition point between the first swing arm (321) and the second swing arm (322) forms a parallelogram.

7. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 6, characterized in that: The fixed plate (31) is provided with a gas spring (36); one end of the first swing arm (321) close to the fixed plate (31) has an extension portion; the telescopic end of the gas spring (36) is provided on the extension portion; and the gas spring (36) is rotatably connected to the first swing arm (321).

8. The magnetically controlled unlocking pivot mechanism of a dishwasher according to claim 1, characterized in that: A guide groove (47) is further provided on one side of the limit plate (40), a guide block (48) is provided at the entrance of the guide groove (47), and a guide pin (37) corresponding to the guide groove (47) is provided on the swing arm (32).

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