Dish washing machine

Abstract

The utility model relates to a dish-washing machine which comprises a box body with an opening in the front side and a shelf arranged in the box body, a guide rail is arranged on the lateral side of the shelf in the left-right direction, and the dish-washing machine is characterized in that at least part of the guide rail can move front and back to serve as a moving part, and an installation piece used for being connected with the side wall of the shelf is fixedly arranged on the moving part. The dish washing machine further comprises a driving mechanism, and the driving mechanism is in driving connection with the moving part or the mounting part. The parts of the driving mechanism do not extend to the central part of the shelf, so that no water flow is blocked to cause cleaning dead angles of tableware on the shelf, and no interference is generated to the rotation of a spraying arm below the dish rack.

Description

Technical Field

[0001] This utility model relates to a dishwasher. Background Technology

[0002] Existing large-capacity dishwashers generally have an upper rack and a lower rack. The upper rack is pulled out and pushed back in via rack rollers that engage with guide rails, and guide rails that engage with guide rail rollers fixed to the cavity. For example, the Chinese utility model patent disclosed in patent application number CN202221118700.7 (publication number CN217852827U), entitled "A Washing Machine," includes a housing, guide rails, and racks. The housing has an opening on its front side. The guide rails extend forward and backward along the inner wall of the housing. The racks are housed within the housing and slide along the sides of the guide rails. The machine also includes a lead screw, a nut assembly, and a drive mechanism. The drive mechanism is located on the rear wall of the housing with its output end facing forward. The lead screw extends forward and backward, and its rear end connects to the output end of the drive mechanism. The nut assembly constrains the bottom of the racks and engages with the lead screw.

[0003] The patent places the nut assembly at the bottom of the dish rack. As can be seen from the figure, the lead screw is located directly below the center of the dish rack. The lead screw may obstruct the water flow to a certain extent, resulting in blind spots for cleaning the dishes. Furthermore, the lead screw may interfere with the rotation of the spray arm below the dish rack.

[0004] In addition, the guide rail design of this patent results in a shorter travel distance for the dish rack. If the dish rack can only be partially pulled out of the box, then the tableware on the dish rack inside the box will be inconvenient to retrieve. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a dishwasher with a rack that is easy to push and pull and a drive mechanism that does not obstruct the water flow, in light of the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a dishwasher, including a front-opening cabinet and a shelf disposed in the cabinet, wherein the shelf is provided with guide rails on the left and right sides, characterized in that: the guide rails are at least partially movable back and forth as moving parts, and the moving parts are fixedly provided with mounting parts for connecting with the side wall of the shelf, and the dishwasher also includes a drive mechanism, wherein the drive mechanism is drivenly connected to the moving parts or the mounting parts.

[0007] The drive mechanism can have various structural forms, such as a push rod motor. Alternatively, the drive mechanism may include a drive component and a lead screw extending in the front-rear direction. The mounting component is provided with a threaded hole through which the lead screw passes and is threadedly connected.

[0008] To allow for a longer travel distance of the guide rail, enabling the shelf to move outside the cabinet for easy access to tableware, the guide rail includes a main track body extending in the front-to-back direction and a sliding track. The sliding track is movably disposed within the main track body and serves as the moving part. The sliding track includes at least two track units capable of displacement in the front-to-back direction. The mounting component is disposed on one of the track units. A limiting component is provided between adjacent track units to limit their movement in the front or back direction. When adjacent track units are limited by the limiting component, they move synchronously in the front or back direction. When the limiting component is released, the two track units can produce relative displacement in the front or back direction. The presence of at least two track units capable of relative displacement in the front-to-back direction results in a longer overall travel distance of the sliding rail.

[0009] In the above scheme, there are two track units, namely a first track unit and a second track unit. The first track unit is movably embedded in the track body, and the second track unit is movably embedded in the first track unit. The mounting component is provided on the second track unit. The driving component drives the second track unit to move back and forth. When the second track unit and the second track unit are limited in the back-to-back direction by the limiting component, the two track units move synchronously.

[0010] In the above scheme, the length of the second track unit is greater than that of the first track unit. The limiting component includes limiting pieces respectively disposed at the front and rear ends of the second track unit. The limiting piece located at the front end can abut against the front end of the first track unit, and the limiting piece located at the rear end can abut against the rear end of the second track unit. When the second track unit moves forward, when its rear limiting piece abuts against the rear end of the first track unit, both move forward synchronously; when the second track unit moves backward, when its front limiting piece abuts against the front end of the first track unit, both move backward synchronously.

[0011] Preferably, ball bearings are provided between the track body and the sliding track to change the sliding relationship between the two into rolling, resulting in low friction. Ball bearings are also provided between two adjacent track units to change the sliding relationship between the two into rolling, resulting in low friction.

[0012] To connect the mounting component to the shelf, the mounting component is provided with a connector for connecting to the shelf. The mounting component has a socket extending in the left-right direction, and the connector has a rod that can be inserted into the socket. The rod can move axially relative to the socket but is always constrained within the socket. The advantage of this design is that it can better accommodate the width deviation of the shelf and the box body in the left-right direction.

[0013] To ensure that the shelf is subjected to uniform force and moves smoothly, guide rails are provided on both the left and right sides of the shelf, and the mounting parts on at least one of the guide rails are connected to the drive mechanism.

[0014] In the above scheme, the track body is located in the box and can move back and forth, or the track body is fixed relative to the box.

[0015] Compared with the prior art, the advantages of this utility model are as follows: This utility model drives the guide rail through a drive mechanism instead of directly driving the shelf. Because the guide rail is located on the side of the shelf in the left and right directions, the components of the drive mechanism will not extend to the center of the shelf. This will not block the water flow and cause the tableware on the shelf to have a dead corner for washing, nor will it interfere with the rotation of the spray arm under the dish rack. At the same time, the drive mechanism drives the moving part of the guide rail to move back and forth, which drives the shelf to move back and forth. This eliminates the need to manually push and pull the shelf, making it more convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A structural schematic diagram of the shelf, guide rails, and drive mechanism;

[0018] Figure 3 for Figure 2 A partial structural diagram;

[0019] Figure 4 for Figure 3 An exploded view of the device without the drive mechanism;

[0020] Figure 5 for Figure 4 Remove the sectional view of the drive mechanism;

[0021] Figure 6 for Figure 4 Another sectional view of the drive mechanism is removed. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that, unless otherwise stated, "multiple" means two or more, and the terms "upper," "lower," "left," "right," "top," "bottom," "front," "rear," etc., indicate the orientation or positional relationship based on the direction or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an adhesive connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model patent based on the specific circumstances.

[0025] like Figures 1-6 As shown, the dishwasher of this preferred embodiment includes a front-opening cabinet 1 and a shelf 2 disposed in the cabinet 1. A spray arm 21 is provided below the shelf 2 to clean the tableware on the shelf 2.

[0026] The shelf 2 is provided with guide rails on its left and right sides. It is possible to provide guide rails on only one side of the shelf 2, but in order to make the shelf 2 bear the force evenly, in this embodiment, guide rails are provided on both the left and right sides of the shelf 2.

[0027] The following description uses one set of guide rails as an example.

[0028] The dishwasher also includes a drive mechanism 3. The guide rail A is at least partially movable back and forth as a moving part. The moving part is fixedly provided with a mounting part 4 for connecting to the side wall of the shelf 2. The drive mechanism 3 is drivenly connected to the moving part or the mounting part 4 to drive the moving part to move back and forth.

[0029] In this embodiment, the drive mechanism 3 includes a drive member 31 and a lead screw 32 extending in the front-back direction. The mounting member 4 is provided with a threaded hole 41 through which the lead screw 32 passes and is threadedly connected. The drive member 31 drives the lead screw 32 to rotate, and the mounting member 4 moves back and forth along the lead screw 32, thereby driving the moving part of the guide rail and the shelf 2 to move back and forth. The drive member 31 can be a motor.

[0030] As can be seen from the above, in this embodiment, the drive mechanism 3 drives the guide rail instead of directly driving the shelf 2. Because the guide rail is located on the side of the shelf 2 in the left and right directions, the components of the drive mechanism 3 will not extend to the center of the shelf 2. This will not block the water flow and cause the tableware on the shelf 2 to have a dead corner for cleaning, nor will it interfere with the rotation of the spray arm 21. At the same time, the drive mechanism 3 drives the moving part of the guide rail to move back and forth, which drives the shelf 2 to move back and forth. This eliminates the need to manually push and pull the shelf 2, which is more convenient.

[0031] In this embodiment, the mounting component 4 on one of the guide rails is connected to the driving mechanism 3. Of course, the mounting components 4 on both guide rails can also be connected to the driving mechanism 3.

[0032] The guide rail includes a main track body 5 extending in the front-back direction and a sliding track. The sliding track is movably disposed in the main track body 5, and the sliding track is the moving part. The sliding track includes at least two track units that can generate displacement in the front-back direction. The mounting member 4 is disposed on one of the track units. A limiting component is provided between two adjacent track units to limit their movement in the front or back direction. When the two adjacent track units are limited by the limiting component, the two track units move synchronously in the front or back direction. When the two adjacent track units are released from the limiting component, the two track units can generate relative displacement in the front or back direction.

[0033] In this embodiment, there are two track units, namely a first track unit 6 and a second track unit 7. The first track unit 6 is movably embedded in the track body 5, and the second track unit 7 is movably embedded in the first track unit 6. The mounting component 4 is disposed on the second track unit 7.

[0034] The second track unit 7 is longer than the first track unit 6. The limiting component includes limiting pieces 71 respectively disposed at the front and rear ends of the second track unit 7. The limiting piece 71 located at the front end can abut against the front end of the first track unit 6, and the limiting piece 71 located at the rear end can abut against the rear end of the second track unit 7. When the second track unit 7 is driven forward by the driving member 31, when its rear limiting piece 71 abuts against the rear end of the first track unit 6, the two move forward synchronously; when the second track unit 7 is driven backward by the driving member 31, when its front limiting piece 71 abuts against the front end of the first track unit 6, the two move backward synchronously.

[0035] Ball bearings 8 are provided between the track body 5 and the sliding track to change the sliding relationship to rolling, reducing friction. Ball bearings 8 are also provided between adjacent track units to change the sliding relationship to rolling, reducing friction. In this embodiment, a first mounting plate 81 extending in the front-back direction is provided between the upper part of the track body 5 and the upper part of the sliding track, and between the lower part of the track body 5 and the lower part of the sliding track. Each first mounting plate 81 has at least two ball bearings 8 spaced apart in the front-back direction. A second mounting plate 82 is provided between the upper and lower parts of adjacent track units, and each second mounting plate 82 has at least two ball bearings 8 spaced apart in the front-back direction.

[0036] In this embodiment, as Figure 5 , 6 As shown, the mounting component 4 is equipped with a connector 9 for connecting to the shelf 2. The mounting component 4 is provided with a socket 42 extending in the left and right direction. The connector 9 is provided with a rod 91 that can be inserted into the socket 42. The rod 91 can move axially relative to the socket 42 but is always constrained in the socket 42. Specifically, the end of the rod 91 away from the connector 9 is provided with a buckle 92 that can be snapped onto the mounting component 4. The buckle 92 and the connector 9 are located on the left and right sides of the socket 42, respectively, and can be selectively abutted against the two ends of the socket 42. The advantage of this design is that it can better adapt to the width deviation of the shelf 2 in the left and right direction and the width deviation of the box 1 in the left and right direction.

[0037] In this embodiment, the connector 9 is an existing snap-fit ​​structure, and the shelf 2 is a hollow structure composed of multiple frame strips. The snap-fit ​​structure is constrained together with the ribs, which will not be described in detail here.

[0038] In this embodiment, the track body 5 is fixed relative to the housing 1, and the two ends of the first track unit 6 are also provided with limiting members to limit the movement between it and the track body 5. If a longer movement is required for the shelf 2, the track body 5 can be arranged in the housing 1 to allow it to move back and forth.

Claims

1. A dishwasher comprising a front side open cabinet (1) and a rack (2) provided in the cabinet (1), the rack (2) being provided with guide rails at both sides in the left-right direction, characterized in that: The guide rail is at least partially movable as a moving part in the front-back direction, and a mounting member (4) for connecting with the side wall of the shelf (2) is fixedly arranged on the moving part. The dishwasher further comprises a driving mechanism (3) which is drivingly connected with the moving part or the mounting member (4).

2. The dishwasher according to claim 1, characterized in that: The driving mechanism (3) comprises a driving member (31) and a screw rod (32) extending in the front-back direction, and the mounting member (4) is provided with a threaded hole (41) through which the screw rod (32) passes and is threadedly connected. 3.The dish washer of claim 1, wherein: The guide rail comprises a rail body (5) and a sliding rail which both extend in the front-back direction, the sliding rail is movably arranged in the rail body (5), the sliding rail is the moving part, the sliding rail comprises at least two rail units which are movable in the front-back direction, the mounting member (4) is arranged on one of the rail units, and a limiting assembly is arranged between the adjacent two rail units to limit the two rail units in the front-back direction, in the state that the adjacent two rail units are limited by the limiting assembly, the two rail units move synchronously in the front-back direction, and in the state that the adjacent two rail units are released by the limiting assembly, the two rail units can be relatively displaced in the front-back direction.

4. The warewash machine of claim 3, further characterized by: The rail units are two, namely a first rail unit (6) and a second rail unit (7), the first rail unit (6) is movably embedded in the rail body (5), the second rail unit (7) is movably embedded in the first rail unit (6), and the mounting member (4) is arranged on the second rail unit (7).

5. The warewash machine of claim 4, further comprising: The length of the second rail unit (7) is greater than that of the first rail unit (6), and the limiting assembly comprises limiting pieces (71) arranged at the front and back ends of the second rail unit (7) respectively, the limiting piece (71) at the front side can abut against the front end of the first rail unit (6), and the limiting piece (71) at the back side can abut against the back end of the second rail unit (7).

6. The warewash machine of claim 3 wherein: Ball bearings (8) are arranged between the rail body (5) and the sliding rail, and ball bearings (8) are also arranged between the adjacent two rail units.

7. The dishwasher according to any one of claims 1 to 6, characterized in that: The mounting member (4) is provided with a socket (42) extending in the left-right direction, and the connecting member (9) is provided with a plug rod (91) which can be plugged into the socket (42), the plug rod (91) can move axially relative to the socket (42) but is always constrained in the socket (42).

8. The dishwasher according to any one of claims 1 to 6, characterized in that: The shelf (2) is provided with guide rails on the left and right sides, and the mounting member (4) on at least one of the guide rails is drivingly connected with the driving mechanism (3).

9. The dishwasher according to any one of claims 3 to 6, characterized in that: The rail body (5) is movably arranged in the cabinet (1), or the rail body (5) is fixed relative to the cabinet (1).

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