Door opening device of dish washing machine and dish washing machine

Abstract

The utility model discloses a door opening device of a dish washing machine and the dish washing machine. The driving piece is movably mounted on the shell, and the driving piece is provided with a driving part; the push rod is movably installed on the shell between an extending position and a retracting position, the push rod is provided with a driving matching part, the driving part is matched with the driving matching part to enable the driving piece to drive the push rod to move, and the push rod moves from the retracting position to the extending position to drive the dish washing machine to open a door. At least part of the shielding part is located outside the dishwasher body and shields the exposed part of the driving matching part. According to the door opening device of the dish washing machine, the shielding part is arranged on the push rod and used for shielding the exposed part of the driving matching part, so that the driving matching part is not prone to being exposed, the user experience feeling is improved, the driving matching part is not prone to being hooked, clamped, blocked and the like by foreign matter, and the moving smoothness of the push rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and more particularly to a door opening device for a dishwasher and the dishwasher. Background Art

[0002] As demand for smart dishwashers grows, some are now using push-rod door-opening actuators to automatically open the door. However, in related technologies, after the push-rod pushes the door open, lubricating grease and other materials are exposed, affecting the user experience. Furthermore, the push-rod is prone to getting caught or stuck, preventing it from resetting. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a dishwasher door opening device whose driving engaging portion is not easily exposed and not easily caught or stuck, thereby improving user experience.

[0004] The utility model also provides a dishwasher with the door opening device.

[0005] According to an embodiment of the present invention, the door opening device of a dishwasher includes: a shell; a driving member, which is movably mounted on the shell and has a driving portion; a push rod, which is movably mounted on the shell between an extended position and a retracted position, and the push rod has a driving matching portion, and the driving portion cooperates with the driving matching portion so that the driving member drives the push rod to move, and the push rod moves from the retracted position to the extended position to drive the dishwasher door to open, wherein the push rod is provided with a shielding portion, and in the extended position, at least a portion of the shielding portion is located outside the body of the dishwasher and shields the exposed portion of the driving matching portion.

[0006] According to the door opening device of the dishwasher in the embodiment of the present invention, a shielding portion is provided on the push rod to shield the exposed part of the drive matching portion, so that the drive matching portion is not easily exposed, thereby improving the user experience. The drive matching portion is not easily hooked, stuck, or blocked by foreign objects, thereby improving the smoothness of the movement of the push rod.

[0007] In addition, the door opening device of the dishwasher according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the drive fitting portion is provided on one side of the push rod along the first direction and extends along the telescopic direction of the push rod, the drive portion is located on the side of the push rod where the drive fitting portion is provided, and the shielding portion is provided on one side of the drive fitting portion along the second direction and extends along the telescopic direction, and the first direction, the second direction and the telescopic direction are perpendicular to each other.

[0009] According to some embodiments of the present invention, the driving member is a driving gear, the rotation axis of the driving gear is parallel to the second direction, the driving part is a ring gear extending circumferentially along the driving gear, the driving mating part is a rack, and the ring gear is engaged with the rack.

[0010] According to some embodiments of the present invention, the door opening device also includes a driving gear and a driven gear, the driven gear is coaxially arranged with the driving member and is located on one side of the driving member along the second direction, the driving gear is engaged with the driven gear to drive the driven gear and the driving member to rotate, wherein in the second direction, the shielding portion is located between the driven gear and the driving member.

[0011] According to some embodiments of the present invention, the driven gear and the driving member are connected through a coaxially arranged connecting member so that the driven gear and the driving member rotate synchronously, the outer diameter of the connecting member is smaller than the outer diameter of the driving member, and the surfaces of the driven gear and the driving member facing each other and the outer peripheral surface of the connecting member cooperate to define an avoidance groove, and the avoidance groove is used to avoid the shielding portion.

[0012] According to some embodiments of the present invention, in the second direction, the distance between the driven gear and the driving member is greater than the size of the shielding portion.

[0013] According to some embodiments of the present invention, the push rod includes a rod body and a sleeve body, the rod body extends along the telescopic direction of the push rod and is provided with the drive fitting portion, the sleeve body is provided at the outer end of the rod body and is used to push the door body of the dishwasher, and the sleeve body is a flexible part.

[0014] According to some embodiments of the present invention, a cross-sectional area of ​​a portion of the push rod close to the dishwasher door, perpendicular to the extension direction, decreases in a direction close to the door.

[0015] According to some embodiments of the present invention, the portion of the push rod close to the dishwasher door is suitable for linear contact with the door.

[0016] According to an embodiment of the present invention, a dishwasher includes a body, a door body and a door opening device of the dishwasher according to an embodiment of the present invention. The body has a washing cavity, the door body is used to open and close the cavity opening of the washing cavity, and the door opening device is used to drive the door body to open the cavity opening.

[0017] According to some embodiments of the present invention, the body has an installation cavity and a passage, the passage is connected to the installation cavity, the shell is arranged in the installation cavity, and in the extended position, part of the push rod extends out of the installation cavity through the passage and abuts against the door body, and the surface of the shell is provided with pre-installed fixing ribs, and the pre-installed fixing ribs are interference fit with the cavity wall of the installation cavity.

[0018] According to some embodiments of the present invention, the pre-installed fixing rib is a sloped rib and has an inclined surface, and the angle between the inclined surface and the surface of the shell is 10° to 60°; and / or the interference between the pre-installed fixing rib and the cavity wall of the installation cavity is 0.5mm to 0.7mm.

[0019] According to some embodiments of the present invention, the body is suitable for being installed on one side of the second direction of the mounting table, the second direction being perpendicular to the telescopic direction of the push rod, one end of the push rod being used to push the end of the door body close to the mounting table to open the cavity opening, and in the extended position, the projection of one end of the push rod on the mounting table and the distance between the edge of the mounting table in the telescopic direction is greater than or equal to 10 mm.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a right side view of a dishwasher according to an embodiment of the present utility model;

[0023] Figure 2 1 is a schematic structural diagram of a door opening device according to an embodiment of the present utility model, wherein the push rod is in an extended position;

[0024] Figure 3 1 is a partial structural diagram of a door opening device according to an embodiment of the present utility model, wherein the push rod is in an extended position;

[0025] Figure 4 1 is a partial structural diagram of a door opening device according to an embodiment of the present utility model, wherein the push rod is in a retracted position;

[0026] Figure 5 yes Figure 2 sectional view of

[0027] Figure 6 1 is a schematic structural diagram of a push rod according to an embodiment of the present utility model;

[0028] Figure 7 1 is a schematic structural diagram of a driven gear, a connecting member and a driving member according to an embodiment of the present utility model;

[0029] Figure 8 This is a schematic structural diagram of a push rod, a driven gear, a connecting member, and a driving member according to an embodiment of the present utility model;

[0030] Figure 9 yes Figure 1 The middle circle shows the enlarged structural diagram of point A;

[0031] Figure 10 yes Figure 2 The middle circle shows the enlarged structural diagram of point B.

[0032] Reference numerals:

[0033] Dishwasher 200; body 210; door 220; mounting table 300;

[0034] Door opening device 100;

[0035] Housing 10; pre-installed fixing rib 11; inclined surface 12;

[0036] Driving member 20; Driving portion 21;

[0037] Push rod 30; driving engagement portion 31; shielding portion 32; rod body 33; sleeve body 34;

[0038] Driven gear 41; connecting member 42; avoidance groove 421. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation to the present invention.

[0041] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them, the first feature "above", "above" and "above" the second feature include the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0042] Hereinafter, a door opening device 100 of a dishwasher 200 and the dishwasher 200 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0043] like Figure 1 As shown, the dishwasher 200 according to the embodiment of the present invention includes a body 210, a door 220, and a door opening device 100 of the dishwasher 200 according to the embodiment of the present invention. The body 210 has a washing chamber, which can be used to accommodate dishes waiting to be washed and perform functions such as washing, cleaning, sterilizing, and drying the dishes.

[0044] The door 220 is used to open and close the opening of the washing chamber, so that items to be washed can be placed into the washing chamber through the opening or items in the washing chamber can be taken out through the opening. The connection between the door 220 and the body 210 can be, but is not limited to, a rotatable connection, a relatively translatable connection, etc.

[0045] The door opening device 100 is used to drive the door body 220 to open the cavity. Figure 1 As shown, the lower end of the door body 220 is hinged to the body 210, and the door opening device 100 is provided at the upper portion of the body 210. The door opening device 100 is used to push the upper end of the door body 220 to rotate relative to the lower end in a direction away from the body 210 to open the cavity. It is worth noting that the door opening device 100 mentioned here as opening the cavity refers to unlocking the door body 220 from the body 210. At this time, the door body 220 can be in an extreme position of rotation away from the body 210, or it can be in a non-extreme position, such as a certain gap is formed between the door body 220 and the edge of the cavity.

[0046] Reference Figures 1-4 As shown, the door opening device 100 of the dishwasher 200 according to the embodiment of the present invention may include: a housing 10 , a driving member 20 and a push rod 30 .

[0047] Specifically, the driving member 20 is movably mounted on the housing 10 and includes a driving portion 21. A push rod 30 is movably mounted on the housing 10 between an extended position and a retracted position. The push rod 30 includes a driving engagement portion 31. The driving portion 21 engages with the driving engagement portion 31 to enable the driving member 20 to drive the push rod 30 to move. Movement of the push rod 30 from the retracted position to the extended position drives the dishwasher 200 door to open. The push rod 30 is provided with a shielding portion 32. In the extended position, at least a portion of the shielding portion 32 is located outside the dishwasher body 210 and shields the exposed portion of the driving engagement portion 31.

[0048] The motion of the driving member 20 may be, but is not limited to, rotation, translation, or swing, as long as it can drive the push rod 30 to move. The mating structure of the driving portion 21 and the driving mating portion 31 may be, but is not limited to, tooth mating, shaft hole mating, protrusion and groove mating, etc.

[0049] like Figure 1-Figure 3 As shown, in the extended position, the push rod 30 extends out of the housing 10 to a greater extent; Figure 4 As shown, in the retracted position, the push rod 30 extends a small distance from the housing 10. Therefore, when the push rod 30 moves from the retracted position to the extended position, it can apply a thrust to the door 220, so that the door 220 can open the washing chamber opening of the body 210, making it more convenient and labor-saving for the user to open the door 220.

[0050] The exposed portion of the drive engaging portion 31 refers to the portion of the drive engaging portion 31 that is located outside the housing 210 when in the extended position. The shielding portion 32 shielding the exposed portion of the drive engaging portion 31 refers to the shielding portion 32 being located on the side of the exposed portion of the drive engaging portion 31 that is closer to the user's usual line of sight. For example Figure 1 As shown, the dishwasher 200 is installed under a mounting table 300 (such as a cabinet table). When using the dishwasher 200, the user usually stands in front of the dishwasher 200, and the user's eyes are located above the mounting table 300. At this time, the shielding portion 32 is located on the upper side of the exposed portion of the drive mating portion 31 to block the user's line of sight, making it difficult for the user to see the exposed portion of the drive mating portion 31.

[0051] Due to the mating structure between the drive unit 21 and the drive mating portion 31, lubricating grease is typically applied to reduce resistance and improve smooth telescopic movement of the push rod 30. This grease may discolor over time, which can affect the user experience. Furthermore, if the drive mating portion 31 is directly exposed, it could become snagged, blocked, or jammed by foreign objects, potentially affecting the return of the push rod 30.

[0052] The shielding portion 32 shields the exposed portion of the drive engaging portion 31, thereby concealing the lubricant on the drive engaging portion 31, making it difficult for the user to see the lubricant, thereby improving the user experience. Furthermore, the shielding portion 32 provides some protection for the exposed portion of the drive engaging portion 31, reducing the risk of the drive engaging portion 31 being snagged, blocked, or stuck by foreign objects, thereby allowing the push rod 30 to smoothly move to the retracted position for reset.

[0053] Of course, in some embodiments, the shielding portion 32 may only shield the exposed portion of the drive fitting portion 31 , or the shielding portion 32 may shield a larger range, such as shielding the entire drive fitting portion 31 .

[0054] According to the door opening device 100 of the dishwasher 200 according to the embodiment of the present invention, a shielding portion 32 is provided on the push rod 30 to shield the exposed part of the drive matching portion 31, so that the drive matching portion 31 is not easily exposed, thereby improving the user experience, and the drive matching portion 31 is not easily hooked, stuck, blocked, etc. by foreign objects, thereby improving the smoothness of the movement of the push rod 30.

[0055] Since the door opening device 100 of the dishwasher 200 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the dishwasher 200 according to the embodiment of the present invention, by providing a shielding portion 32 on the push rod 30 to shield the exposed part of the drive matching portion 31, makes the drive matching portion 31 not easily exposed, thereby improving the user experience, and the drive matching portion 31 is not easily hooked, stuck, blocked, etc. by foreign objects, thereby improving the smoothness of the movement of the push rod 30.

[0056] According to some embodiments of the present invention, Figure 5 and Figure 6 As shown, the drive fitting portion 31 is provided on one side of the push rod 30 along the first direction and extends along the telescopic direction of the push rod 30, the drive portion 21 is located on the side of the push rod 30 where the drive fitting portion 31 is provided, and the shielding portion 32 is provided on one side of the drive fitting portion 31 along the second direction and extends along the telescopic direction. The first direction, the second direction and the telescopic direction are perpendicular to each other.

[0057] For example Figure 5 and Figure 6 As shown, the first direction is the left-right direction, the telescopic direction is the front-to-back direction, and the second direction is the up-down direction. The drive fitting part 31 is arranged on the left side of the push rod 30 and extends along the front-to-back direction. The drive part 21 is located on the left side of the push rod 30, and the shielding part 32 is located on the upper side of the drive fitting part 31 and extends along the front-to-back direction.

[0058] The shielding portion 32 can extend in an elongated strip along the direction of extension and retraction of the push rod 30 to increase the range of the shielding portion 31 and improve the shielding effect. Furthermore, the shielding portion 32 can be smaller in other directions, such as the first and second directions, to reduce space occupation. Furthermore, the shielding portion 32 is less likely to interfere with the mating structure between the drive portion 21 and the drive mating portion 31, thereby ensuring smoother extension and retraction of the drive push rod 30 and a more rational structural design.

[0059] In some embodiments, as Figure 5-Figure 8 As shown, the driving member 20 is a driving gear rotatably mounted on the housing 10, with the rotation axis of the driving gear parallel to the second direction. The driving portion 21 is a ring gear extending along the circumference of the driving gear, and the driving mating portion 31 is a rack, with the ring gear meshing with the rack.

[0060] In other words, the drive member 20 and the push rod 30 are driven by teeth meshing. The rotation of the drive gear can drive the push rod 30 to move in the telescopic direction. The drive gear drives the push rod 30 with higher precision and more stability, and is less likely to slip and affect the door opening effect. Moreover, the thrust on the door body 220 can be greater to ensure the door opening effect.

[0061] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the door opening device 100 further includes a driving gear and a driven gear 41. The driven gear 41 is coaxially arranged with the driving member 20 and is located on one side of the driving member 20 along the second direction. The driving gear is meshed with the driven gear 41. The rotation of the driving gear can drive the driven gear 41 to rotate, and the rotation of the driven gear 41 can drive the driving member 20 to rotate. In addition, the driving portion 21 and the driving engagement portion 31 cooperate to drive the push rod 30 to telescopically move.

[0062] By providing a driving gear and a driven gear 41, it is easier to adjust the rotational speed of the driving member 20, so that the distance the push rod 30 moves can be more closely matched to the door opening distance or door opening angle. For example, in some specific embodiments, the door opening device 100 includes a drive motor, and the driving gear is drivingly connected to the output shaft of the drive motor. The output shaft of the drive motor drives the driving gear to rotate. The outer diameter of the driving gear is smaller than the outer diameter of the driven gear 41. Therefore, the speed ratio can be adjusted by the driving gear and the driven gear 41 so that the distance the drive motor ultimately drives the push rod 30 to move is more closely matched to the door opening distance.

[0063] In addition, continue to refer to Figure 8As shown, in the second direction, the shielding portion 32 is located between the driven gear 41 and the driving member 20. In other words, a certain gap is separated from the driven gear 41 and the driving member 20, forming a clearance groove 421 between the driven gear 41 and the driving member 20 for the shielding portion 32 to pass through. As a result, the shielding portion 32 is unlikely to interfere with the driving member 20, and the shielding portion 32 is unlikely to interfere with the driven gear 41, allowing the various components of the door opening device 100 to move more smoothly.

[0064] In some embodiments, as Figure 7 As shown, the driven gear 41 and the driving member 20 are connected by a coaxially arranged connecting member 42, so that the driven gear 41 and the driving member 20 rotate synchronously. The outer diameter of the connecting member 42 is smaller than the outer diameter of the driving member 20. In addition, the opposing surfaces of the driving member 20 and the driven gear 41, and the circumferential surface of the connecting member 42 can cooperate to define an avoidance groove 421. The avoidance groove 421 is used to avoid the shielding portion 32. For example, in some embodiments in which the driving portion 21 is a ring gear provided on the outer circumference of the driving gear, the outer diameter of the connecting member 42 can be smaller than the inner diameter of the tooth bottom of the ring gear.

[0065] Connecting the driven gear 41 and the driver 20 via the connector 42 enhances synchronization between the driven gear 41 and the driver 20, preventing slippage that could affect door opening. Furthermore, the connector 42 stabilizes the spacing between the driver 20 and the driven gear 41. Because the outer diameter of the connector 42 is smaller than that of the driver 20, the opposing surfaces of the driver 20 and the driven gear 41, along with the circumference of the connector 42, cooperate to define a clearance groove 421 that avoids the obstruction 32, ensuring an anti-interference effect.

[0066] It should be noted that the connecting member 42, the driven gear 41 and the driving member 20 can be an integral member or separate members connected together. Figure 7 As shown, the driving member 20 is a driving gear, and the driving gear, the connecting member 42 and the driven gear 41 are integrally formed to improve the synchronous rotation effect and the avoidance effect.

[0067] In some embodiments, as Figure 7 As shown, the connecting member 42 is a cylinder, or the connecting member 42 includes a cylinder and a reinforcing rib provided on the outer circumference of the cylinder. The reinforcing rib connects the driven gear 41 and the driving member 20 to improve structural stability. In the embodiment including the reinforcing rib, the outer diameter of the connecting member 42 at the reinforcing rib is smaller than the outer diameter of the driving member 20.

[0068] In some embodiments, in the second direction, the distance between the driven gear 41 and the driving member 20 is greater than the size of the shielding portion 32, so that the driven gear 41 and the driving member 20 can avoid the shielding portion 32 and prevent interference.

[0069] The distance between the driven gear 41 and the driving member 20 refers to the distance between the opposing surfaces of the driven gear 41 and the driving member 20 in the second direction. For example, in an embodiment including a connecting member 42, the distance between the driven gear 41 and the driving member 20 refers to the dimension of the connecting member 42 along the second direction, that is, the dimension of the avoidance groove 421 along the second direction.

[0070] In some specific embodiments, in the second direction, the size of the shielding portion 32 is 1.4 mm to 1.5 mm, and the distance between the driven gear 41 and the driving member 20 is 2.5 mm to 3 mm.

[0071] According to some embodiments of the present invention, Figure 1 and Figure 9 As shown, the machine body 210 can be mounted on one side of the mounting surface 300 in a second direction, which is perpendicular to the extension and retraction direction of the push rod 30. One end of the push rod 30 is used to push the end of the door 220 near the mounting surface 300 to open the washing chamber. In the extended position, the distance between the projection of the push rod 30 on the mounting surface 300 and the edge of the mounting surface 300 in the extension direction is greater than or equal to 10 mm.

[0072] For example Figure 1 and Figure 9 As shown, the housing 210 is mounted on the underside of the mounting surface 300. The front end of the push rod 30 is used to push the upper end of the door body 220 to open the cavity. When the front end of the push rod 30 is in the extended position, the distance between the projection of the front end of the push rod 300 on the mounting surface 300 and the front edge of the mounting surface 300 in the vertical direction is greater than or equal to 10 mm.

[0073] After the push rod 30 pushes the door body 220 to open the cavity, if the distance between one end of the push rod 30 and the edge of the mounting surface 300 is too small, the distance between the door body 220 and the edge of the mounting surface 300 will be too small, which will prevent the user from inserting their fingers between the door body 220 and the body 210 to open the door body 220. Within the above range, the distance between the door body 220 and the edge of the mounting surface 300 is appropriate, allowing the user to operate the door from any angle, improving the user experience.

[0074] In some specific embodiments, in the extended position, the distance between the projection of one end of the push rod 30 on the mounting table 300 and the edge of the mounting table 300 in the telescopic direction can be 10 mm, 15 mm, 20 mm, 25 mm, etc.

[0075] In some embodiments, the travel of the push rod 30 between the extended position and the retracted position is 90 mm to 100 mm. In embodiments where the drive engaging portion 31 is a rack, the extension length of the rack in the telescopic direction is greater than or equal to the travel of the push rod 30 .

[0076] If the travel of the push rod 30 is too short, the distance between the door 220 and the machine body 210 will be too small after the door 220 opens the opening of the washing chamber, and the user's palm will not be easy to reach into the door 220. Figure 1 As shown, the dishwasher 200 is installed below the mounting table 300, the lower end of the door body 220 is hinged to the body 210, and the door opening device 100 is arranged on the upper part of the body 210. Usually, the front end of the mounting table 300 exceeds the front end surface of the body 210 by a certain distance; if the moving stroke of the push rod 30 is too short, after the door body 220 opens the cavity, the distance between the upper edge of the door body 220 and the front end of the mounting table 300 is too small, and the user's palm cannot extend downward to open the door body 220 with his fingers, and can only operate the door from the side of the door body 220.

[0077] In the above-mentioned embodiment of the present application, the travel of the push rod 30 is 90 mm to 100 mm. After the door 220 opens the washing chamber opening, the distance between the door 220 and the machine body 210 is larger, allowing the user to open the door from any angle and freely operate the door opening method, for example, facilitating the user to reach down between the door 220 and the machine body 210 and pull open the door 220. In some specific embodiments, the travel of the push rod 30 is 90 mm, 92 mm, 95 mm, 98 mm, and 100 mm, etc.

[0078] In some embodiments of the present invention, Figure 5-Figure 6 and Figure 9 As shown, the push rod 30 includes a rod body 33 and a sleeve body 34. The rod body 33 extends along the extension direction of the push rod 30 and is provided with a driving matching portion 31. The sleeve body 34 is provided at the outer end of the rod body 33 and is used to push the door body 220 of the dishwasher 200. The sleeve body 34 is a flexible member.

[0079] The hardness of the rod body 33 can be greater than that of the sleeve body 34 so that the overall structural strength of the push rod 30 is large enough to meet the transmission requirements with the driving member 20 and the thrust requirements for the door body 220.

[0080] The sleeve 34 is a flexible member, for example, can be made of rubber or silicone material, etc. The flexible member can be elastically deformed and directly contact the door body 220 when the door is opened, which can avoid hard contact with the door body 220, reduce working noise and damage to the door body 220.

[0081] In some embodiments, as Figure 5-Figure 6 and Figure 9 As shown, the cross-sectional area of ​​the portion of the push rod 30 adjacent to the door 220 of the dishwasher 200, perpendicular to the extension direction, decreases in the direction closer to the door 220. For example, in an embodiment including a sleeve 34, the cross-sectional area of ​​the sleeve 34, perpendicular to the extension direction, may decrease in the direction closer to the door 220.

[0082] In this way, the extrusion contact area between the push rod 30 and the door body 220 can be reduced, the problem of bouncing noise generated when the push rod 30 is retracted can be alleviated, and the user experience can be improved.

[0083] In an embodiment of the present application, the shape of the portion of the push rod 30 close to the door body 220 can be flexibly set, such as the specific structure of the sleeve 34 can be flexibly set, for example, it can be formed into a cone, a frustum, a terrace, a triangular prism, etc.

[0084] In some specific embodiments, the portion of the push rod 30 close to the door 220 of the dishwasher 200 may be in line contact with the door 220. Figure 9 The front end surface of the sleeve 34 is extended obliquely and the front end of the front end surface is in line contact with the door body 220, which has a better effect of reducing the bouncing noise generated when the push rod 30 is retracted.

[0085] According to some embodiments of the present invention, Figure 1 and Figure 9 As shown, the housing 210 has a mounting cavity and a through opening, the through opening communicating with the mounting cavity. The housing 10 is disposed within the mounting cavity. In the extended position, a portion of the push rod 30 extends through the through opening to the outside of the mounting cavity and abuts against the door 220, enabling the push rod 30 to push the door 220 open and thereby open the cavity opening.

[0086] In addition, if Figure 2 and Figure 10 As shown, the surface of the housing 10 is provided with pre-installed fixing ribs 11, and the pre-installed fixing ribs 11 are interference fit with the cavity wall of the installation cavity.

[0087] By means of interference fit between the pre-installed fixing ribs 11 and the cavity wall of the installation cavity, not only can the shell 10 and the body 210 be pre-fixed perpendicular to the telescopic direction of the push rod 30, but the shell 10 and the body 210 can also be pre-fixed in the telescopic direction by interference resistance, so as to facilitate the connection and fixation of the shell 10 and the body 210 in the subsequent assembly process, such as facilitating the connection and fixation of the shell 10 and the body 210 by fasteners, thereby achieving rapid and reliable assembly in production; and can also reduce the shaking and vibration of the shell 10 relative to the body 210 during the use of the dishwasher 200, thereby reducing noise and improving stability.

[0088] In some embodiments, the interference between the pre-installed fixing rib 11 and the cavity wall of the installation cavity is 0.5 mm to 0.7 mm. Within this range, the pre-installed fixing rib 11 can stably fit with the cavity wall of the installation cavity, thereby ensuring a stable relative position between the housing 10 and the body 210, facilitating subsequent installation and fixation, and the interference is not so large as to make pre-installation difficult or cause local deformation of the housing 10 and the body 210.

[0089] For example, in some specific embodiments, the interference between the pre-installed fixing rib 11 and the cavity wall of the installation cavity is 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, etc.

[0090] In some embodiments, as Figure 2 and Figure 10 As shown, the pre-installed fixing rib 11 is a slope rib and has an inclined surface 12. The angle between the inclined surface 12 and the surface of the housing 10 is 10° to 60°. In other words, the inclination angle of the inclined surface 12 is 10° to 60°. Figure 10 As shown, the door opening device 100 can be installed in the installation cavity of the body 210 from back to front, the inclined surface 12 is inclined from front to back and upward, and the angle between the inclined surface 12 and the horizontal plane is 10° to 60°.

[0091] The angle of the pre-installed fixing rib 11 is more suitable, so that the door opening device 100 and the housing 210 can be pre-installed and fixed directly by bare hands during assembly and disassembly, without the need for tooling such as flat-head screws, which is conducive to improving assembly and disassembly efficiency. For example, in some specific embodiments, the angle between the inclined surface 12 and the surface of the housing 10 is 10°, 20°, 30°, 40°, 50°, and 60°.

[0092] A dishwasher 200 according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the following description is merely illustrative and should not be construed as limiting the present invention.

[0093] like Figures 1-10 As shown, a dishwasher 200 according to a specific embodiment of the present invention includes a door body 220, a body 210, and a door opening device 100. The dishwasher 200 is installed below the mounting table 300. When the user knocks on the door body 220 during use, the internal sensor signal is converted and transmitted to the PCB control board of the door opening device 100 to issue an opening instruction. The internal drive motor is powered to drive the worm to rotate, which gradually drives the clutch matching gear, the driving gear, the driven gear 41, and the drive gear to rotate, and the linkage push rod 30 is pushed out to push out the door body 220, overcoming the door opening force of the lock between the door body 220 and the body 210. The push rod 30 continues to be pushed out to the specified door opening distance, thereby realizing the automatic door opening function.

[0094] Compared to the push rod in the related art, the push rod 30 in this embodiment is 15mm longer, and the drive engagement portion 31 has five additional teeth. When the mounting surface 300 protrudes more than 20mm from the front surface of the dishwasher door 220, the push rod in the related art pushes the door open, leaving it only about 6mm from the front end of the mounting surface. This prevents the user from inserting their fingers to pull the door open, forcing them to operate from the side. However, extending the push rod 30's travel to 95mm resolves this issue. After the push rod 30 pushes the door 220 open, it leaves about 21mm from the front end of the mounting surface 300, providing an additional 15mm of space, allowing the user to insert their hand into the door 220 and freely operate the door opening mechanism.

[0095] At the same time, a shielding plate is set above the driving matching part 31 to form a shielding part 32. The thickness of the shielding part 32 is 1.4 to 1.5 mm, which solves the problem of exposed rack. The user cannot see the exposed rack grease from the front, and the user experience is improved. A connecting part 42 is set between the driving gear and the driven gear 41 to form an avoidance groove 421 with a height of 2.9 mm to adapt to the shielding part 32 of the avoidance push rod 30 to avoid interference.

[0096] Furthermore, after pushing the door body 220 open, the push rod 30 needs to be retracted to facilitate the next door opening. The front end surface of the sleeve 34 of the push rod 30 is an inclined surface and is in line contact with the door body 220, reducing the extrusion contact surface with the door body 220, reducing the bouncing sound generated when the push rod 30 is retracted, and improving the actual user experience.

[0097] Pre-installed fixing ribs 11 are provided on the upper surface of the shell 10. The pre-installed fixing ribs 11 are conical slope ribs, and the conical slope ribs are interference fit with the top wall of the installation cavity of the body 210, so that the door opening device 100 can be pre-assembled and fixed directly with bare hands during assembly and disassembly, and there is no need to use a flat-blade screwdriver to pry open the pre-installed fixing ribs 11 for operation, which is conducive to rapid assembly in production and reliable pre-installed limit.

[0098] Other structures and operations of the dishwasher 200 and the door opening device 100 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0099] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0100] Throughout this specification, reference to terms such as "embodiment," "specific embodiment," and "example" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A door opening device for a dishwasher, characterized in that: include: case; a driving member movably mounted on the housing and having a driving portion; A push rod is movably mounted on the housing between an extended position and a retracted position. The push rod has a driving engagement portion. The driving portion cooperates with the driving engagement portion so that the driving member drives the push rod to move. The push rod moves from the retracted position to the extended position to drive the dishwasher door to open. The push rod is provided with a shielding portion. In the extended position, at least a portion of the shielding portion is located outside the body of the dishwasher and shields the exposed portion of the driving engagement portion.

2. The door opening device of the dishwasher according to claim 1, characterized in that: The drive fitting portion is provided on one side of the push rod along the first direction and extends along the telescopic direction of the push rod. The drive portion is located on the side of the push rod where the drive fitting portion is provided. The shielding portion is provided on one side of the drive fitting portion along the second direction and extends along the telescopic direction. The first direction, the second direction and the telescopic direction are perpendicular to each other.

3. The door opening device of the dishwasher according to claim 2, characterized in that: The driving member is a driving gear, the rotation axis of the driving gear is parallel to the second direction, the driving portion is a gear ring extending along the circumference of the driving gear, the driving matching portion is a rack, and the gear ring is meshed with the rack.

4. The door opening device of the dishwasher according to claim 2, characterized in that: It also includes a driving gear and a driven gear, wherein the driven gear is coaxially arranged with the driving member and is located on one side of the driving member along the second direction, and the driving gear is engaged with the driven gear to drive the driven gear and the driving member to rotate, wherein in the second direction, the shielding portion is located between the driven gear and the driving member.

5. The door opening device of the dishwasher according to claim 4, characterized in that: The driven gear and the driving member are connected through a coaxially arranged connecting member so that the driven gear and the driving member rotate synchronously. The outer diameter of the connecting member is smaller than the outer diameter of the driving member, and the surfaces of the driven gear and the driving member facing each other and the outer peripheral surface of the connecting member cooperate to define an avoidance groove, and the avoidance groove is used to avoid the shielding portion.

6. The door opening device of the dishwasher according to claim 4, characterized in that: In the second direction, the distance between the driven gear and the driving member is greater than the size of the shielding portion.

7. The door opening device of a dishwasher according to any one of claims 1 to 6, characterized in that: The push rod includes a rod body and a sleeve body. The rod body extends along the extension direction of the push rod and is provided with the driving matching part. The sleeve body is provided at the outer end of the rod body and is used to push the door body of the dishwasher. The sleeve body is a flexible member.

8. The door opening device of the dishwasher according to claim 1, characterized in that: The cross-sectional area of ​​the portion of the push rod close to the dishwasher door body, which is perpendicular to the extension and retraction direction, decreases in the direction close to the door body.

9. The door opening device of the dishwasher according to claim 8, characterized in that: The portion of the push rod close to the dishwasher door is suitable for linear contact with the door.

10. A dishwasher, characterized in that: The dishwasher comprises a body, a door and a door opening device according to any one of claims 1 to 9, wherein the body has a washing cavity, the door is used to open and close the cavity opening of the washing cavity, and the door opening device is used to drive the door to open the cavity opening.

11. The dishwasher according to claim 10, characterized in that The body has an installation cavity and a passage, the passage is connected to the installation cavity, the shell is arranged in the installation cavity, and in the extended position, part of the push rod extends out of the installation cavity through the passage and abuts against the door body, and the surface of the shell is provided with pre-installed fixing ribs, and the pre-installed fixing ribs are interference fit with the cavity wall of the installation cavity.

12. The dishwasher according to claim 11, characterized in that The pre-installed fixing rib is a sloped rib having an inclined surface, and the angle between the inclined surface and the surface of the shell is 10° to 60°; and / or, The interference between the pre-installed fixing rib and the cavity wall of the installation cavity is 0.5mm to 0.7mm.

13. The dishwasher according to claim 10, characterized in that The machine body is suitable for being installed on one side of the second direction of the installation table, the second direction being perpendicular to the extension direction of the push rod, and one end of the push rod is used to push the end of the door body close to the installation table to open the cavity. In the extended position, a distance between a projection of one end of the push rod on the mounting table and an edge of the mounting table in the telescopic direction is greater than or equal to 10 mm.

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