Household appliance

Abstract

The utility model relates to a household appliance which comprises a box body with an opening in the front side. The guide rail extends in the front-and-back direction and can move front and back to enter and exit from the box body, a guide groove extending in the front-and-back direction is formed in the guide rail, and a positioning part is arranged on the guide rail; the dish rack is provided with a sliding piece, the sliding piece can be in sliding fit with the guide rail, and the dish rack and the guide rail are relatively fixed in the front-back direction in the state that the sliding piece abuts against the positioning part; the swing rod assembly comprises a swing rod, the lower end of the swing rod can rotate around a rotating axis extending in the left-right direction, and a sliding groove extending in the length direction of the swing rod is formed in the swing rod. The connecting rod extends in the left-right direction, one end of the connecting rod is fixedly installed on the dish rack, and the other end of the connecting rod is installed in the sliding groove and can slide along the sliding groove; the driving piece is in driving connection with the lower end of the swing rod. And the dish rack does not need to be manually pushed and pulled.

Description

Technical Field

[0001] The utility model relates to a household appliance. Background Art

[0002] Household appliances such as washing machines and disinfection cabinets have greatly facilitated people's lives. In the prior art, household appliances have an inner cavity, which contains a dish rack for placing tableware. To facilitate placing and removing tableware from the dish rack, the dish rack needs to be able to be pulled back and forth.

[0003] For example, in the Chinese utility model patent application CN202321296206.4 (publication number CN219846471U), entitled "A Guide Rail Structure for Household Appliances and Household Appliances," the guide rail structure includes an axle, a guide rail, and a roller. Along the axial extension direction of the axle, the longitudinal cross-section of each portion of the outer peripheral wall of the roller has a straight section, and a first D-shaped gap is formed between the straight section and the corresponding position of the inner peripheral wall of the guide rail. The presence of the first gap reduces the contact area between the outer peripheral wall of the roller and the inner peripheral wall of the guide rail, thereby reducing the friction between the two, resulting in smoother and more labor-saving pushing and pulling of the guide rail, satisfying the user experience.

[0004] This patent reduces the contact area between the outer wall of the roller and the inner wall of the guide rail to make the pushing and pulling of the guide rail smooth, but it still needs to be pushed and pulled manually. When there are a large number of tableware placed on the bowl rack, pushing and pulling will be more laborious. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a household appliance which does not require manual pushing or pulling of a bowl rack in view of the current status of the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a household appliance comprising

[0007] Box, open front;

[0008] A guide rail extending in the front-to-back direction and capable of moving forward and backward to enter and exit the box body, the guide rail having a guide groove extending in the front-to-back direction and a positioning portion;

[0009] A bowl rack is provided with a sliding member, which can slide with the guide rail, and when the sliding member abuts against the positioning portion, the bowl rack and the guide rail are relatively fixed in the front-to-back direction;

[0010] It is characterized in that the left and right sides of the bowl rack are each provided with a rocker assembly, and each group of the rocker assembly includes

[0011] A swing rod, having a lower end capable of rotating about a rotation axis extending in the left-right direction, and a slide groove extending along the length of the swing rod;

[0012] A connecting rod extends in the left-right direction, one end of which is fixedly mounted on the bowl rack, and the other end of which is mounted in the slide groove and can slide along the slide groove;

[0013] The driving member is connected to the lower end of the rocker arm.

[0014] In the above solution, the driving member is a motor arranged outside the box, and the lower end of the rocker arm is connected to the output shaft of the motor through a connector passing through the side wall of the box. The driving member does not occupy space inside the box.

[0015] Preferably, the swing arm comprises an upper portion, a connecting portion, and a lower portion, which are sequentially arranged and connected from top to bottom. The upper portion is located between the dish rack and the guide rail, the connecting portion is inclined from top to bottom away from the dish rack, and the lower portion is located close to the side wall of the box. This not only allows the swing arm to be placed as close to the inner wall of the box as possible, occupying as little space as possible inside the box, but also avoids the guide rail.

[0016] In order to further facilitate the pulling out of the bowl rack, the household appliance further includes a roller assembly, including

[0017] The wheel axle is relatively fixed in the box and extends in the left and right directions;

[0018] A roller is embedded in the guide groove and can generate relative displacement with the guide rail in the front-back direction. The roller is sleeved on the wheel axle and can rotate around the axis of the wheel axle;

[0019] The inner sleeve is mounted on the axle and positioned between the axle and the roller. A plurality of rotatable balls are positioned between the inner sleeve and the roller, spaced along the circumference of the inner sleeve. As the guide rail moves, the roller rotates, creating rolling friction between the roller and the inner sleeve through the balls. This reduces friction, allowing the roller to rotate more smoothly and reducing friction with the guide rail. This allows the guide rail to slide smoothly, facilitating the swing arm assembly to drive the bowl rack forward and backward.

[0020] In order to position the ball, a first arc-shaped groove is provided on the outer peripheral wall of the inner sleeve, which is recessed toward the axis of the wheel axle, and a second arc-shaped groove is provided on the inner peripheral wall of the roller, which is arched away from the axis of the wheel axle. The first arc-shaped groove is for partially embedding the ball, and the second arc-shaped groove is for partially embedding the ball.

[0021] Preferably, the radius of the first arcuate groove is R1, the radius of the ball is r, R1>r, and the center of the first arcuate groove is located outside the center of the ball, so that the contact area between the ball and the first arcuate groove is small, reducing rotational friction.

[0022] Preferably, the radius of the second arcuate groove is R2, the radius of the ball is r, R2>r, and the center of the second arcuate groove is located inside the center of the ball. In this way, the contact area between the ball and the second arcuate groove is small, reducing rotational friction.

[0023] Preferably, a positioning sleeve is provided between the inner sleeve and the roller. The centerline of the positioning sleeve aligns with the axis of the wheel axle, and the positioning sleeve is fixed relative to the roller. The positioning sleeve is provided with a plurality of positioning holes along its circumference, into which the balls are placed in a one-to-one correspondence. The positioning sleeve evenly separates the balls, ensuring smooth rotation of the roller, and serves to position the balls, preventing them from straying from the roller or inner sleeve and affecting the normal rotation of the roller assembly.

[0024] In order to fix the positioning sleeve relative to the roller, the positioning sleeve can be welded to the roller, or a circle of ribs can be provided on the outer peripheral wall of the positioning sleeve, and when the positioning sleeve is located between the roller and the inner sleeve, the ribs have an interference fit with the inner peripheral wall of the roller; or a circle of ribs can be provided on the inner peripheral wall of the roller, and when the positioning sleeve is located between the roller and the inner sleeve, the ribs have an interference fit with the roller.

[0025] Preferably, each of the positioning holes passes through the end wall of one end of the positioning sleeve to form an entrance, and the ball enters the positioning hole from the entrance, and the entrance of the positioning hole is a cone with a gradually decreasing diameter along the direction in which the ball enters the positioning hole. The cone-shaped structure serves as a guide, making it easier to place the ball in the corresponding positioning hole.

[0026] The household appliance may be a disinfection cabinet, or may be a washing machine capable of washing tableware and / or fruits and vegetables.

[0027] Compared with the existing technology, the advantages of the present invention are as follows: the present invention sets up a rocker arm assembly, the driving member drives the lower end of the rocker arm to rotate, and the upper end of the rocker arm rotates synchronously. The bowl rack is connected to the rocker arm through a connecting rod. Due to the limitation of the guide rail, the bowl rack can only be driven by the rocker arm to move in the front and rear directions. There is no need to manually push and pull the bowl rack, which is more labor-saving than manually pushing and pulling the bowl rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 sectional view of

[0030] Figure 3 for Figure 2 A magnified view of point A;

[0031] Figure 4 for Figure 3 A schematic structural diagram of the positioning sleeve in FIG.

[0032] Figure 5 for Figure 1 Schematic diagram of the local structure (the bowl rack is located in the box);

[0033] Figure 6 for Figure 1 Schematic diagram of the local structure (the bowl rack is located outside the box). DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 6 As shown, the household appliance of this preferred embodiment is a washing machine capable of washing dishes and / or fruits and vegetables. Of course, the household appliance can also be a disinfection cabinet.

[0036] The household appliance includes a housing 1, a bowl rack 2, a guide rail 3, a roller assembly 4 and a rocker assembly 5.

[0037] The front side of the box body 1 is open, and the guide rail 3 extends in the front-to-back direction. The guide rail 3 and the bowl rack 2 can both move back and forth to enter and exit the box body 1. A sliding member 21 is provided above and / or below the guide rail 3. The sliding member 21 can be rotatably mounted on the bowl rack 2. The rotation axis of the sliding member 21 extends in the left-right direction, and the sliding member 21 slides in cooperation with the guide rail 3. Both ends of the guide rail 3 are provided with a positioning portion 31 that can abut against the sliding member 21.

[0038] When the slider 21 is not in contact with the positioning portion 31, the slider 21 slides along the guide rail 3. In this case, the guide rail 3 does not move, and only the dish rack 2 moves. When the slider 21 is in contact with the positioning portion 31, the slider 21 and the guide rail 3 are relatively fixed in the forward or backward direction. In this case, the guide rail 3 and the dish rack 2 move synchronously, and the dish rack 2 is relatively fixed in the front-to-back direction relative to the guide rail 3. This coordination between the guide rail 3 and the dish rack 2 allows the dish rack 2 to have a longer movement trajectory.

[0039] The roller assembly includes an axle 41, a roller 42, an inner sleeve 43, a ball bearing 44 and a positioning sleeve 45. Guide rails 3 and roller assemblies are provided on both sides of the bowl rack 2, and sliding parts 21 that can slide with the guide rails 3 are provided on both sides of the bowl rack 2.

[0040] The axle 41 is relatively fixedly positioned within the housing 1 and extends in the left-right direction. In this embodiment, a through-hole is provided on the side wall of the housing 1, through which one end of the axle 41 passes and is fixedly connected with a screw 47. A reinforcing plate 46 is provided on the housing 1 at the through-hole. Preferably, the reinforcing plates 46 are provided on both the outer and inner walls of the housing 1.

[0041] The guide rail 3 has a guide groove 32 extending in the front-to-back direction. A roller 42 is embedded in the guide groove 32 and can move relative to the guide rail 3 in the front-to-back direction. The roller 42 is mounted on the axle 41 and can rotate about the axis of the axle 41. The ends of the guide groove 32 are closed to limit the travel of the guide rail 3. As the roller 42 rotates about the axle 41, the guide rail 3 moves back and forth, and the friction between the roller 42 and the axle 41 is relatively low.

[0042] An inner sleeve 43 is provided between the axle 41 and the roller 42 , and a rotatable ball 44 is provided between the inner sleeve 43 and the roller 42 . There are a plurality of balls 44 , which are spaced apart along the circumference of the inner sleeve 43 .

[0043] Specifically, a positioning sleeve 45 is provided between the inner sleeve 43 and the roller 42. The centerline of the positioning sleeve 45 is aligned with the axis of the axle 41, and the positioning sleeve 45 is fixed relative to the roller 42. The positioning sleeve 45 is provided with a plurality of positioning holes 451 along its circumference, into which the balls 44 are placed in a one-to-one correspondence. Each positioning hole 451 passes through the end wall of one end of the positioning sleeve 45 to form an entrance 452. The balls 44 enter the positioning holes 451 through the entrance 452. The entrance 452 of the positioning holes 451 is tapered in a gradually decreasing diameter as the balls 44 enter the positioning holes 451. The tapered structure serves as a guide, facilitating the placement of the balls 44 in the corresponding positioning holes 451. The positioning sleeve 45 evenly separates the balls 44, ensuring smooth rotation of the roller 42. It also positions the balls 44, preventing them from deviating from the roller 42 or the inner sleeve 43 and affecting the normal rotation of the roller 42 assembly.

[0044] The positioning sleeve 45 and the roller 42 can be welded together, or a circle of ribs 453 can be provided on the outer peripheral wall of the positioning sleeve 45, and when the positioning sleeve 45 is located between the roller 42 and the inner sleeve 43, the ribs 453 and the inner peripheral wall of the roller 42 have an interference fit; or a circle of ribs 453 can be provided on the inner peripheral wall of the roller 42, and when the positioning sleeve 45 is located between the roller 42 and the inner sleeve 43, the ribs 453 and the roller 42 have an interference fit.

[0045] A first arcuate groove 431 is provided on the outer peripheral wall of the inner sleeve 43 and is recessed toward the axis of the wheel shaft 41. A second arcuate groove 421 is provided on the inner peripheral wall of the roller 42 and is arched away from the axis of the wheel shaft 41. The first arcuate groove 431 is partially embedded in the ball 44, and the second arcuate groove 421 is partially embedded in the ball 44.

[0046] The radius of the first arcuate groove 431 is R1, and the radius of the ball 44 is r, where R1>r. The center of the first arcuate groove 431 is located outside the center of the ball 44, with "outside" referring to a direction away from the axis of the axle 41. This reduces the contact area between the ball 44 and the first arcuate groove 431, thereby reducing rotational friction.

[0047] The radius of the second arcuate groove 421 is R2, and the radius of the ball 44 is r, where R2>r. The center of the second arcuate groove 421 is located inside the center of the ball 44, with "inside" referring to the direction closer to the axis of the axle 41. This reduces the contact area between the ball 44 and the second arcuate groove 421, thereby reducing rotational friction.

[0048] The left and right sides of the bowl rack 2 are both provided with rocker arm assemblies 5 , and each rocker arm assembly 5 includes a rocker arm 51 , a connecting rod 52 and a driving member 53 .

[0049] There is one swing rod 51, the lower end of which is rotatably mounted on the side wall of the box body 1. The rotation axis of the swing rod 51 extends in the left-right direction. The swing rod 51 is provided with a slide groove 510 extending along its length direction.

[0050] The connecting rod 52 extends in the left-right direction, with one end fixedly mounted on the bowl rack 2 , and the other end of the connecting rod 52 is mounted in the slide groove 510 and can slide along the slide groove 510 .

[0051] The drive member 53 is connected to the lower end of the rocker arm 51. This drive member 53 is a motor located outside the housing 1. The lower end of the rocker arm 51 is connected to the motor's output shaft via a connector that passes through the side wall of the housing 1. The drive member 53 does not occupy space within the housing 1. The drive member 53 drives the lower end of the rocker arm 51 to rotate, and the upper end of the rocker arm 51 rotates synchronously. The bowl rack 2 is connected to the rocker arm 51 via a connecting rod 52. Because of the constraints of the guide rail 3, the bowl rack 2 can only be moved forward and backward by the rocker arm 51. This method is more labor-efficient than manually pushing and pulling the bowl rack 2.

[0052] The swing arm 51 comprises an upper portion 511, a connecting portion 512, and a lower portion 513, which are sequentially arranged and connected from top to bottom. The upper portion 511 is located between the dish rack 2 and the guide rail 3. The connecting portion 512 is inclined from top to bottom away from the dish rack 2. The lower portion 513 is located close to the side wall of the box 1. This arrangement not only allows the swing arm 51 to be placed as close to the inner wall of the box 1 as possible, occupying as little space as possible within the box 1, but also avoids the guide rail 3.

[0053] As can be seen from the above, the rocker assembly 5 of this embodiment eliminates the need to manually push and pull the bowl rack 2, which is more labor-saving. In addition, because the roller assembly 4 reduces the friction of the guide rail 3 and moves smoothly, it is convenient for the rocker assembly 5 to drive the bowl rack 2 to move.

[0054] 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 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A household appliance comprising The box body (1) is open at the front; A guide rail (3) extends in a front-to-back direction and can move forward and backward to enter and exit the box body (1); the guide rail (3) has a guide groove (32) extending in the front-to-back direction, and a positioning portion (31) is provided on the guide rail (3); A bowl rack (2) is provided with a sliding member (21), wherein the sliding member (21) can slide with the guide rail (3), and when the sliding member (21) and the positioning portion (31) are in contact with each other, the bowl rack (2) and the guide rail (3) are relatively fixed in the front-to-back direction; It is characterized by: The left and right sides of the bowl rack (2) are both provided with swing rod assemblies (5), and each set of the swing rod assemblies (5) includes A swing rod (51) having a lower end capable of rotating about a rotation axis extending in a left-right direction, and a slide groove (510) extending along the length direction of the swing rod (51); A connecting rod (52) extends in the left-right direction, one end of which is fixedly mounted on the bowl rack (2), and the other end of which is mounted in the slide groove (510) and can slide along the slide groove (510); The driving member (53) is drivingly connected to the lower end of the rocker (51).

2. The household appliance according to claim 1, wherein: The driving member (53) is a motor arranged outside the box (1), and the lower end of the rocker arm (51) is connected to the output shaft of the motor via a connecting member passing through the side wall of the box (1).

3. The household appliance according to claim 1, wherein: The rocker (51) comprises an upper portion (511), a connecting portion (512), and a lower portion (513) which are sequentially arranged and connected from top to bottom; the upper portion (511) is located between the bowl rack (2) and the guide rail (3); the connecting portion (512) is inclined from top to bottom in a direction away from the bowl rack (2); and the lower portion (513) is arranged close to the side wall of the box body (1).

4. The household appliance according to any one of claims 1 to 3, characterized in that: Also included is a roller assembly (4), comprising A wheel axle (41) is relatively fixedly located in the box (1) and extends in the left-right direction; A roller (42) is embedded in the guide groove (32) and can generate relative displacement with the guide rail (3) in the front-rear direction. The roller (42) is sleeved on the wheel shaft (41) and can rotate around the axis of the wheel shaft (41); An inner sleeve (43) is sleeved on the wheel shaft (41) and located between the wheel shaft (41) and the roller (42). A rotatable ball (44) is provided between the inner sleeve (43) and the roller (42). The ball (44) is in plurality and is spaced apart along the circumference of the inner sleeve (43).

5. The household appliance according to claim 4, characterized in that: The outer peripheral wall of the inner sleeve (43) is provided with a first arc-shaped groove (431) that is recessed toward the axis of the wheel shaft (41); the inner peripheral wall of the roller (42) is provided with a second arc-shaped groove (421) that is arched away from the axis of the wheel shaft (41); the first arc-shaped groove (431) is for partially embedding the ball (44); and the second arc-shaped groove (421) is for partially embedding the ball (44).

6. The household appliance according to claim 5, characterized in that: The radius of the first arc-shaped groove (431) is R1, the radius of the ball (44) is r, R1>r, and the center of the first arc-shaped groove (431) is located outside the center of the ball (44).

7. The household appliance according to claim 5, wherein: The radius of the second arc-shaped groove (421) is R2, the radius of the ball (44) is r, R2>r, and the center of the second arc-shaped groove (421) is located inside the center of the ball (44).

8. The household appliance according to claim 4, wherein: A positioning sleeve (45) is further provided between the inner sleeve (43) and the roller (42). The center line of the positioning sleeve (45) is in the same extension direction as the axis of the wheel shaft (41). The positioning sleeve (45) is fixed relative to the roller (42). The positioning sleeve (45) is provided with a plurality of positioning holes (451) along its circumference for the balls (44) to be placed therein in a one-to-one correspondence.

9. The household appliance according to claim 8, characterized in that: Each positioning hole (451) passes through the end wall of one end of the positioning sleeve (45) to form an entrance (452), and the ball (44) enters the positioning hole (451) from the entrance (452), and the entrance (452) of the positioning hole (451) is tapered with a gradually decreasing diameter along the direction in which the ball (44) enters the positioning hole (451).

10. The household appliance according to any one of claims 1 to 3, characterized in that: The household appliance is a washing machine capable of washing dishes and / or fruits and vegetables.

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