A bowl basket lifting mechanism and household appliance thereof

Abstract

The utility model relates to the technical field of bowl basket lifting, and propose a kind of bowl basket lifting mechanism and its household appliance, including the pneumatic spring damper of the auxiliary bowl basket steady lifting of link assembly, bowl basket and pneumatic spring damper are connected with link assembly respectively, pneumatic spring damper is equipped with air hole, air hole one end is equipped with the elastic switch for constraining pneumatic spring damper movement;Handle is equipped on bowl basket, handle is transmission connection with elastic switch;Handle is pressed to drive elastic switch to open air hole, pneumatic spring damper moves, release handle, elastic switch elastically resets and closes air hole, to make bowl basket hover in arbitrary position angle in lifting process.The air hole on pneumatic spring damper cooperates with elastic switch, and then transmission connection of handle and elastic switch, solve the technical problem that traditional bowl basket lifting mechanism does not have arbitrary position locking.

Description

Technical Field

[0001] This utility model relates to the technical field of bowl basket lifting, specifically to a bowl basket lifting mechanism and its household appliance. Background Technology

[0002] In existing kitchen appliances such as dishwashers, sterilizers, or dish cabinets, the design of the lifting mechanism of the dish rack directly affects the user experience and ease of operation. The interior of the dishwasher, sterilizer, or dish cabinet is equipped with dish racks that are spaced apart at the top and bottom. The dish rack in the lower position is pulled out and then raised by the lifting mechanism, so that the user does not need to bend over to pick up or put down items.

[0003] A height-adjustable bowl basket disclosed in Chinese patent CN108403055B uses a swing arm unit, a guide rail assembly, and a locking mechanism to pull out and lift the bowl basket, and is equipped with a gas spring to assist in lifting. Although the gas spring can provide assistance, it lacks damping adjustment and arbitrary position locking functions, which makes it impossible for the bowl basket to stop smoothly at any position during the lifting process. It is difficult for users to flexibly adjust the lifting height of the bowl basket as needed. The complex unlocking and locking structure can only achieve fixation in a single position. Utility Model Content

[0004] This utility model proposes a dish basket lifting mechanism and its household appliance. The air vent on the pneumatic spring damper cooperates with a resilient switch, and the handle is connected to the resilient switch via a transmission mechanism, solving the technical problem of traditional dish basket lifting mechanisms lacking arbitrary position locking. When the user presses the handle, the resilient switch opens the air vent, allowing the pneumatic spring damper to move normally and lift the dish basket. When the dish basket reaches the target position, the user releases the handle, and the resilient switch elastically resets, closing the air vent. This allows the dish basket to hover at any position during lifting without a complex unlocking and locking structure, and without the need for an additional structure to fix the dish basket's lifting position.

[0005] A bowl basket lifting mechanism designed for this purpose includes a pneumatic spring damper that assists in the smooth lifting and lowering of the bowl basket via a linkage assembly. The bowl basket and the pneumatic spring damper are respectively connected to the linkage assembly. The pneumatic spring damper is provided with an air hole, and one end of the air hole is provided with an elastic switch for constraining the movement of the pneumatic spring damper. The bowl basket is provided with a handle, and the handle is connected to the elastic switch in a transmission manner. When the handle is pressed, the actuating elastic switch opens the air vent, the pneumatic spring damper moves, the handle is released, and the elastic switch elastically resets to close the air vent, so that the basket can be suspended at any position and angle during the lifting and lowering process.

[0006] The pneumatic spring damper includes a housing and a piston rod. The piston rod is axially telescopically disposed inside the housing. An air hole is disposed on the end of the piston rod and connects to the internal air passage of the pneumatic spring damper. An elastic switch is disposed on the outer side of the end of the piston rod.

[0007] The piston rod end is provided with a connecting seat, one end of the connecting rod assembly is hinged to the connecting seat, the elastic switch includes a closing member, the closing member is hinged to the connecting seat, and the closing member is provided with a stop arm for closing the air hole.

[0008] The elastic switch also includes a spring. A connecting shaft is provided between the closing member and the connecting seat. The spring is sleeved on the connecting shaft. The first end of the spring abuts against the inner side of the closing member, and the second end of the spring abuts against the inner side of the stop arm.

[0009] The connecting seat is provided with a limiting arm for constraining the rotational position angle of the closure member.

[0010] A pull member is provided between the closure member and the handle. One end of the pull member is connected to the closure member, and the other end of the pull member is connected to the handle.

[0011] The pulling component is a rope or wire, and the basket is equipped with buckles for fixing the pulling component.

[0012] The linkage assembly includes a first linkage and a second linkage. A slide rail assembly is provided on the outside of the basket. The first linkage and the second linkage are respectively hinged to the slide rail assembly. The first linkage is also hinged to the connecting seat.

[0013] A household appliance includes an inner liner, on which the aforementioned dish basket lifting mechanism is provided. The dish basket is disposed inside the inner liner, and pneumatic spring dampers and connecting rod assemblies are provided on both the left and right sides of the inner liner.

[0014] The inner liner is provided with a support member, and a pull member is provided between the handle and the elastic switch. The handle and the elastic switch are connected by the pull member. The pull member is partially supported on the support member, and the support member is located above the connecting rod assembly.

[0015] The household appliances mentioned are dishwashers, sterilizers, or dishwashing and sterilizing machines.

[0016] The beneficial technical effects of this utility model are as follows: The air vent on the pneumatic spring damper works in conjunction with a spring switch, and through the transmission connection between the handle and the spring switch, it solves the technical problem of traditional dish basket lifting mechanisms lacking arbitrary position locking. When the user presses the handle, it drives the spring switch to open the air vent, allowing the pneumatic spring damper to move normally to lift and lower the dish basket. When the dish basket reaches the target position, the user releases the handle, and the spring switch elastically resets, closing the air vent. This allows the dish basket to hover at any position during the lifting process without the need for a complex unlocking and locking structure. Users do not need to bend over and can flexibly adjust the height of the dish basket according to their needs, greatly improving operational convenience and user experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the bowl basket in the descending position according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the bowl basket in the raised position according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the connection structure between the bowl basket and the connecting rod assembly according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the connection structure of the pneumatic spring damper and the connecting rod assembly according to an embodiment of the present invention.

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Figure 6 This is a cross-sectional structural diagram of a pneumatic actuator according to an embodiment of the present invention. Detailed Implementation

[0023] 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.

[0024] See Figures 1-6 A bowl basket lifting mechanism includes a pneumatic spring damper 2 that assists in the smooth lifting of a bowl basket 1 via a linkage assembly 3. The bowl basket 1 and the pneumatic spring damper 2 are respectively connected to the linkage assembly 3. The pneumatic spring damper 2 is provided with an air hole 203, and one end of the air hole 203 is provided with an elastic switch 4 for constraining the movement of the pneumatic spring damper 2. The bowl basket 1 is provided with a handle 5, and the handle 5 is kinetically connected to the elastic switch 4. When handle 5 is pressed, the elastic switch 4 is driven to open the air hole 203, the pneumatic spring damper 2 moves, the handle 5 is released, and the elastic switch 4 elastically resets to close the air hole 203, so that the basket 1 can be suspended at any position and angle during the lifting and lowering process.

[0025] The air vent 203 on the pneumatic spring damper 2 works in conjunction with the elastic switch 4, and is further connected to the handle 5 via a transmission link with the elastic switch 4, thus solving the technical problem of traditional bowl basket lifting mechanisms lacking arbitrary position locking. When the user presses the handle 5, it drives the elastic switch 4 to open the air vent 203, allowing the pneumatic spring damper 2 to move normally and lift the bowl basket 1. When the bowl basket 1 reaches the target position, the user releases the handle 5, and the elastic switch 4 elastically resets and closes the air vent 203, allowing the bowl basket 1 to hover at any position during the lifting process without the need for a complex unlocking and locking structure. Users do not need to bend over and can flexibly adjust the height of the bowl basket 1 according to their needs, greatly improving operational convenience and user experience.

[0026] The pneumatic spring damper 2 includes a housing 201 and a piston rod 202. The piston rod 202 is axially telescopically disposed inside the housing 201. An air hole 203 is disposed on the end of the piston rod 202 and connects to the internal air passage of the pneumatic spring damper 2. An elastic switch 4 is disposed on the outer side of the end of the piston rod 202.

[0027] Air vent 203 is located at the end of piston rod 202 and connected to the internal air passage. Elastic switch 4 is located on the outside of the end of piston rod 202, which can precisely control the connection and disconnection between the internal air passage of pneumatic spring damper 2 and the outside air, thereby switching the motion state or the waiting state of pneumatic spring damper 2 and improving the reliability of lifting and hovering of basket 1.

[0028] The vent 203 on the piston rod 202 connects the high-pressure air chamber inside the damper to the external normal pressure environment. Blocking the vent prevents gas from flowing out or in through the piston rod, thus preventing the piston rod 202 from extending or retracting and thus stopping the pneumatic spring damper 2 from operating.

[0029] The piston rod 202 has a connecting seat 6 at its end. One end of the connecting rod assembly 3 is hinged to the connecting seat 6. The elastic switch 4 includes a closing member 401, which is hinged to the connecting seat 6. The closing member 401 has a stop arm 402 for closing the vent 203. The closing member 401 may also have a sealing element for sealing the vent 203. The sealing element is a block structure.

[0030] The connecting seat 6 is provided with a through hole, and the end of the piston rod 202 with an air hole 203 is inserted into the through hole of the connecting seat 6.

[0031] The connecting seat 6 enables the hinge connection between the connecting rod assembly 3 and the piston rod 202. During the extension and retraction of the piston rod 202, the connecting rod assembly 3 swings, driving the basket 1 to move. The closing member 401 of the elastic switch 4 is hinged to the connecting seat 6 and can be flexibly rotated by the handle 5 or the (torsion spring) spring 403. The stop arm 402 on the closing member 401 corresponds to the air hole 203. The stop arm 402 effectively closes the air hole 203 in the waiting state. The elastic switch 4 also includes a spring 403. A connecting shaft is provided between the closing member 401 and the connecting seat 6. The spring 403 is sleeved on the connecting shaft. The first end of the spring 403 abuts against the inner side of the closing member 401, and the second end of the spring 403 abuts against the inner side of the stop arm 402.

[0032] The spring 403 of the resilient switch 4 is sleeved on the connecting shaft between the closing member 401 and the connecting seat 6. The first end of the spring 403 abuts against the inner side of the closing member 401, and the second end abuts against the inner side of the stop arm 402, providing a stable elastic restoring force for the closing member 401. When the handle 5 is released, the spring 403 can quickly push the closing member 401 to rotate, so that the stop arm 402 can close the air hole 203 in time, improving the timeliness and stability of the suspension of the basket 1. Moreover, the spring 403 is easy to install, fits tightly with the closing member 401 and the stop arm 402, is not easy to fall off, and ensures the long-term reliability of the resilient switch 4. The connecting seat 6 is provided with a limiting arm 601 for constraining the rotational position angle of the closure member 401. When the operating handle 5 drives the closure member 401 to open the air hole 203, the limiting arm 601 constrains the maximum rotational position angle of the closure member 401.

[0033] A pull member 7 is provided between the closure member 401 and the handle 5. One end of the pull member 7 is connected to the closure member 401, and the other end of the pull member 7 is connected to the handle 5.

[0034] One end of the handle 5 is provided with a connecting arm. The connecting arm protrudes from the top outer side of the handle 5 and has a slot that engages with the bowl basket 1. When the handle 5 is rotated, the rod of the bowl basket 1 is relatively limited and rotated in the slot of the connecting arm.

[0035] The handle 5 has a mounting hole, and the other end of the pull member 7 passes through the mounting hole. The pull member 7 is fixed to the handle 5 by binding itself.

[0036] The pull member 7 between the closure member 401 and the handle 5 enables a transmission connection between the two, allowing the user to indirectly control the action of the closure member 401 by operating the handle 5 without the need for a complex transmission structure. This ensures that the closure member 401 responds promptly when the user presses or releases the handle 5, thereby guaranteeing smooth control of the air vent 203 and improving the flexibility and reliability of the mechanism's operation. The pulling component 7 is a rope or wire, and the basket 1 has a fastener for fixing the pulling component 7. The fastener is formed by binding the rope to the rod of the basket 1. The pulling component 7 passes through the hole in the binding rope to install the pulling component 7 on the basket 1. When the pulling component 7 is pulled, it moves along the hole. The pulling component 7 is made of rope or wire, which is soft yet strong enough to flexibly transmit pulling force and is not easily damaged during long-term use.

[0037] The linkage assembly 3 includes a first linkage 301 and a second linkage 302. A slide rail assembly 8 is provided on the outside of the basket 1. The first linkage 301 and the second linkage 302 are respectively hinged to the slide rail assembly 8. The first linkage 301 is also hinged to the connecting seat 6.

[0038] The first link 301 and the second link 302 of the linkage assembly 3 cooperate with each other, and together with the slide rail assembly 8 on the outside of the basket 1, form a stable linkage transmission structure. The first link 301 and the second link 302 are respectively hinged to the slide rail assembly 8, and the first link 301 is hinged to the connecting seat 6, which can smoothly transmit the power of the pneumatic spring damper 2 to the basket 1. At the same time, the slide rail assembly 8 provides guidance for the movement of the basket 1, so that the basket 1 moves laterally along the slide rail assembly 8 during the lifting and lowering process. The slide rail assembly 8 includes a fixed rail and a moving rail. The first link 301 is connected to the fixed rail, and the second link 302 is connected to the moving rail. The moving rail is fixed to the outside of the basket 1 by two spaced buckles. In this way, the slide rail assembly 8 and the basket 1 lift and lower synchronously. At the same time, when the second link 302 swings, it drives the moving rail of the slide rail assembly 8 to slide on the fixed rail, so that the basket 1 moves laterally along the slide rail assembly 8 during the lifting and lowering process.

[0039] A household appliance includes an inner liner 9, on which the aforementioned dish basket lifting mechanism is provided. The dish basket 1 is disposed inside the inner liner 9, and pneumatic spring dampers 2 and connecting rod assemblies 3 are provided on both the left and right sides of the inner liner 9.

[0040] The dish rack lifting mechanism is installed on the inner liner 9 of the household appliance, enabling the dish rack 1 inside the inner liner 9 to have flexible lifting and hovering functions, improving the convenience of using the household appliance. Pneumatic spring dampers 2 and connecting rod assemblies 3 are installed on both the left and right sides of the inner liner 9, providing balanced support and power to the dish rack 1 from both sides. This prevents the dish rack 1 from tilting or becoming unstable due to force on one side, ensuring that the dish rack 1 remains horizontal during lifting and lowering, reducing the risk of items tipping over. The symmetrical layout on both sides also ensures more even force distribution on the mechanism.

[0041] The inner liner 9 is provided with a support member 10, and a pull member 7 is provided between the handle 5 and the elastic switch 4. The handle 5 and the elastic switch 4 are connected by the pull member 7, and the pull member 7 is partially supported on the support member 10.

[0042] The support member 10 is located above the connecting rod assembly 3. The support member 10 on the inner liner 9 can support part of the pulling member 7, preventing the pulling member 7 from sagging due to its own weight or the movement of the mechanism.

[0043] The household appliances mentioned are dishwashers, sterilizers, or dishwashing and sterilizing machines.

[0044] The pull member 7 may be provided with a tension adjuster 13. The tension adjuster 13 includes a locking member 1301 for fixing the pull member 7 and a locking seat 1302 connected to the locking member 1301. The locking seat 1302 is threadedly connected to the locking member 1301. The lower end of the locking seat 1302 is slidably fixed on the inner side of the inner liner 9. A screw is provided at the lower end of the locking seat 1302. A fixing plate is provided on the inner side of the inner liner 9. The fixing plate is provided with a sliding groove. A nut is provided below the screw. The upper and lower limits of the fixing plate are between the screw head and the nut. When the nut is turned, the position of the tension adjuster 13 on the pull member 7 and the distance between the pull member 7 and the support member 10 can be adjusted. When the distance between the pull member 7 and the support member 10 is large, the pull member 7 between the tension adjuster 13 and the support member 10 will sink, thereby adjusting the tension.

[0045] The inner side of the inner liner 9 is provided with a mounting plate 11 for mounting the pneumatic spring damper 2, the connecting rod assembly 3 and the support member 10. The support member 10 is fixed on the mounting plate 11. The end of the housing 201 is hinged to the mounting plate 11. The upper parts of the first connecting rod 301 and the second connecting rod 302 are both hinged to the mounting plate 11 by rivets.

[0046] When the dish basket 1 is pulled out and the user presses the handle 5 on the dish basket 1, the dish basket 1 rises under the action of the pneumatic spring damper 2. The handle 5 drives the closing member 401 of the elastic switch 4 to rotate around the connecting shaft of the connecting seat 6 through the pulling member 7 (at this time, the spring 403 is compressed). The stop arm 402 on the closing member 401 moves away from the air hole 203 at the end of the piston rod 202 of the pneumatic spring damper 2, the air hole 203 opens, and the piston rod 202 of the pneumatic spring damper 2 can extend axially within the housing 201. At the same time, the pneumatic spring damper 2 drives the connecting rod assembly 3 to swing through the connecting seat 6, causing the dish basket 1 to rise. When the dish basket 1 rises to the desired position, the user releases the handle 5, the spring 403 elastically resets, pushes the closing member 401 to rotate in the opposite direction, the stop arm 402 closes the air hole 203 again, the pneumatic spring damper 2 stops moving, and the dish basket 1 hovers.

[0047] When the dish basket 1 needs to be reset, the user presses the handle 5 on the dish basket 1. As the piston rod 202 of the pneumatic spring damper 2 retracts, and the dish basket 1 descends to the desired position (e.g., the linkage assembly 3 is fully retracted into the inner liner 9), the user releases the handle 5. The user then pushes the dish basket 1 into the inner liner 9. The closure 401 has a screw hole for installing the locking screw 12. One end of the pull member 7 is pressed onto the closure 401 by the locking screw 12. One end of the pull member 7 can be wrapped around the screw post of the locking screw 12. After the screw post of the locking screw 12 is inserted into the screw hole of the closure 401, one end of the pull member 7 is vertically limited between the head of the locking screw 12 and the closure 401.

[0048] 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.

Claims

1. A bowl basket lifting mechanism, comprising a pneumatic spring damper (2) that assists in the smooth lifting of a bowl basket (1) via a linkage assembly (3), wherein the bowl basket (1) and the pneumatic spring damper (2) are respectively connected to the linkage assembly (3), characterized in that: The pneumatic spring damper (2) is provided with an air hole (203), and one end of the air hole (203) is provided with an elastic switch (4) for constraining the movement of the pneumatic spring damper (2); the basket (1) is provided with a handle (5), and the handle (5) is connected to the elastic switch (4) in a transmission manner. When the handle (5) is pressed, the elastic switch (4) is driven to open the air hole (203), the pneumatic spring damper (2) moves, the handle (5) is released, and the elastic switch (4) is elastically reset to close the air hole (203), so that the bowl basket (1) is suspended at any position angle during the lifting and lowering process.

2. The bowl basket lifting mechanism according to claim 1, characterized in that: The pneumatic spring damper (2) includes a housing (201) and a piston rod (202). The piston rod (202) is axially extended and retracted inside the housing (201). An air hole (203) is provided on the end of the piston rod (202) and connected to the internal air passage of the pneumatic spring damper (2). An elastic switch (4) is provided on the outside of the end of the piston rod (202).

3. The bowl basket lifting mechanism according to claim 2, characterized in that: The piston rod (202) has a connecting seat (6) at its end. One end of the connecting rod assembly (3) is hinged to the connecting seat (6). The elastic switch (4) includes a closing member (401), which is hinged to the connecting seat (6). The closing member (401) has a stop arm (402) for closing the air hole (203).

4. The bowl basket lifting mechanism according to claim 3, characterized in that: The elastic switch (4) also includes a spring (403). A connecting shaft is provided between the closing member (401) and the connecting seat (6). The spring (403) is sleeved on the connecting shaft. The first end of the spring (403) abuts against the inner side of the closing member (401), and the second end of the spring (403) abuts against the inner side of the stop arm (402).

5. The bowl basket lifting mechanism according to claim 3, characterized in that: The connecting seat (6) is provided with a limiting arm (601) for constraining the rotational position angle of the closing member (401).

6. The bowl basket lifting mechanism according to claim 3, characterized in that: A pull member (7) is provided between the closure member (401) and the handle (5). One end of the pull member (7) is connected to the closure member (401), and the other end of the pull member (7) is connected to the handle (5).

7. The bowl basket lifting mechanism according to claim 6, characterized in that: The pull member (7) is a pull rope or steel wire, and the bowl basket (1) is provided with a buckle for fixing the pull member (7).

8. The bowl basket lifting mechanism according to claim 3, characterized in that: The linkage assembly (3) includes a first linkage (301) and a second linkage (302). A slide rail assembly (8) is provided on the outside of the bowl basket (1). The first linkage (301) and the second linkage (302) are respectively hinged to the slide rail assembly (8). The first linkage (301) is also hinged to the connecting seat (6).

9. A household appliance, comprising an inner liner (9), characterized in that: The inner liner (9) is provided with a bowl basket lifting mechanism as described in any one of claims 1-8. The bowl basket (1) is set inside the inner liner (9). Pneumatic spring dampers (2) and connecting rod assemblies (3) are provided on both the left and right sides inside the inner liner (9).

10. The household appliance according to claim 9, characterized in that: The inner liner (9) is provided with a support member (10), and a pull member (7) is provided between the handle (5) and the elastic switch (4). The handle (5) and the elastic switch (4) are connected by the pull member (7). The pull member (7) is partially supported on the support member (10), and the support member (10) is located above the connecting rod assembly (3). The household appliances mentioned are dishwashers, sterilizers, or dishwashing and sterilizing machines.

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