Roller assembly, dish basket module and dish washing machine

Abstract

The utility model discloses a roller assembly, which comprises a pulley, a roller shaft and a roller shaft, the wheel shaft comprises a mounting part and a connecting part which are fixedly connected with each other, the connecting part transversely penetrates through the central channel and is matched and clamped with the pulley, and the pulley can rotate around the connecting part; a plurality of containing grooves which are arranged at intervals in the circumferential direction are formed between the outer surface of the connecting part and the inner surface of the pulley, and the pin rollers are movably arranged in the containing grooves. The idler wheel assembly is simple in structure and convenient to assemble, reduces the overall frictional resistance, and is beneficial to improving the push-pull smoothness of the bowl basket. The utility model further discloses a dish basket module and a dish washing machine.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to a roller assembly, a dish rack module, and a dishwasher. Background Technology

[0002] Currently, dishwasher racks all use a roller design, and the smoothness of pushing and pulling largely depends on the smoothness of the roller structure. However, the existing conventional roller structure has relatively high friction, which affects the smoothness of pushing and pulling and results in a poor user experience. Summary of the Invention

[0003] This invention aims to at least partially solve one of the problems existing in the prior art. To this end, this invention proposes a roller assembly with a simple structure, easy assembly, reduced overall frictional resistance, and improved smoothness of the dish rack's push-pull motion. This invention also provides a dish rack module and a dishwasher.

[0004] The roller assembly provided above is achieved through the following technical solution:

[0005] A roller assembly includes: a pulley having a transversely arranged central channel; a wheel axle including a mounting portion and a connecting portion fixedly connected to each other, the connecting portion passing transversely through the central channel and engaging with the pulley, the pulley being rotatable around the connecting portion; and rollers having a plurality of circumferentially spaced receiving grooves formed between the outer surface of the connecting portion and the inner surface of the pulley, the rollers being movably disposed in each receiving groove.

[0006] In some embodiments, the end of the receiving groove away from the mounting portion is closed to form a groove sidewall, and the end of the receiving groove near the mounting portion is open, with the opposite ends of the roller abutting or clearance-fitting the groove sidewall of the receiving groove and the mounting portion, respectively.

[0007] In some embodiments, a first arc surface is provided at the end of the roller away from the mounting portion, and the first arc surface is in movable contact with the sidewall of the receiving groove; and / or a second arc surface is provided at the end of the roller near the mounting portion, and the second arc surface is in movable contact with the mounting portion.

[0008] In some embodiments, an annular baffle is provided at one end of the inner surface of the pulley away from the mounting part, and a plurality of first buckles are provided at circumferential intervals at the free end of the connecting part, and the plurality of first buckles are engaged with the side of the annular baffle away from the roller.

[0009] In some embodiments, a portion of the annular baffle forms the sidewall of the receiving groove, and one end of the roller near the annular baffle is in movable contact with the annular baffle.

[0010] In some embodiments, a plurality of external recessed cavities are provided on the inner surface of the pulley, opening toward the connecting portion and arranged circumferentially at intervals, the external recessed cavities and the outer surface of the connecting portion enclosing each other to form the receiving groove.

[0011] In some embodiments, a plurality of recessed cavities are provided on the outer surface of the connecting portion, which are arranged circumferentially and open toward the pulley. The recessed cavities and the inner surface of the pulley enclose each other to form the receiving groove.

[0012] In some embodiments, the mounting portion is provided with two symmetrically arranged second latches, and a second channel is formed between the two second latches; and / or the pulley facing the mounting portion is provided with an annular flange extending toward the mounting portion, the annular flange being located around the central channel and abutting or clearance-fitting with the mounting portion.

[0013] The bowl basket module provided above is implemented through the following technical solution:

[0014] A dish basket module includes a dish basket assembly and a roller assembly as described above, the roller assembly being mounted on the left / right outer side wall of the dish basket assembly.

[0015] In some embodiments, a fixing wire is provided on the left / right side wall of the bowl and basket assembly. The fixing wire includes a first fixing section and a second fixing section. The first fixing section is fixedly connected to the left / right side wall of the bowl and basket assembly. At least one end of the first fixing section is bent outward to form the second fixing section. The second fixing section is inserted laterally into the first channel of the connecting part. The mounting part engages with the first fixing section.

[0016] According to the dishwasher provided above, it is implemented through the following technical solution: a dishwasher having a dish rack module as described above.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The roller assembly of this utility model consists of a pulley, a wheel axle, and multiple rollers. The multiple rollers are circumferentially spaced and movable between the connection between the pulley and the wheel axle. The structure is simple and easy to assemble. It effectively reduces the contact area between the pulley and the wheel axle, reduces the overall frictional resistance, and helps to improve the smoothness of pushing and pulling the basket. It solves the problem of the basket not being able to be pushed and pulled smoothly due to the large frictional force between the roller and the wheel axle. Attached Figure Description

[0019] Figure 1 This is an exploded view of the roller assembly in Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the roller assembly in Embodiment 1 of this utility model;

[0021] Figure 3 This is a cross-sectional view of the roller assembly in Embodiment 1 of this utility model. Figure 1 ;

[0022] Figure 4 This is a cross-sectional view of the roller assembly in Embodiment 1 of this utility model. Figure 2 ;

[0023] Figure 5 This is a cross-sectional view of the pulley in Embodiment 1 of this utility model;

[0024] Figure 6 This is a cross-sectional view of the wheel axle in Embodiment 1 of this utility model;

[0025] Figure 7 This is a cross-sectional view of another roller assembly in Embodiment 1 of this utility model;

[0026] Figure 8 This is an exploded view of the bowl basket module in Embodiment 2 of this utility model;

[0027] Figure 9 This is a schematic diagram of the bowl basket module in Embodiment 2 of this utility model.

[0028] In the diagram: 1-Pulley, 111-Central channel, 112-Annular groove, 12-Annular baffle, 13-Outer concave cavity, 14-Annular flange, 151-First reinforcing rib, 152-Second reinforcing rib; 2-Axle, 21-Mounting part, 211-Fixing plate, 212-Mounting plate, 213-Second buckle, 214-Second channel, 22-Connecting part, 221-First channel, 222-First buckle, 223-Inner concave cavity; 3-Roller, 31-First arc surface, 32-Second arc surface;

[0029] 4-Bag assembly, 411-First fixing section, 412-Second fixing section. Detailed Implementation

[0030] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0031] Example 1

[0032] refer to Figure 1-6This embodiment provides a roller assembly, which consists of a pulley 1, a wheel axle 2, and multiple rollers 3. The pulley 1 has a hollow structure and a transversely arranged central channel 111 at its center. The wall of the central channel 111 forms the inner surface of the pulley 1. An outwardly opening annular groove 112 is recessed on the outer peripheral wall of the pulley 1, which is configured for sliding connection with the guide rail of the dishwasher. The wheel axle 2 includes a mounting part 21 and a connecting part 22 fixedly connected to each other. The connecting part 22 is transversely inserted through the central channel 111 of the pulley 1 and engages with the pulley 1, allowing the pulley 1 to rotate around the connecting part 22. In this embodiment, the mounting part 21 has a second channel 214 and is configured for engaging with the dish rack assembly, and the connecting part 22 has a first channel 221 and is configured for engaging with the dish rack assembly.

[0033] Furthermore, a plurality of circumferentially spaced receiving grooves (not shown in the figure) are formed between the outer surface of the connecting part 22 and the inner surface of the pulley 1. The number of the plurality of receiving grooves corresponds one-to-one with the number of the plurality of rollers 3, and a roller 3 is movably disposed in each receiving groove.

[0034] As can be seen, the roller assembly consists of only three main components: pulley 1, axle 2, and rollers 3. Multiple rollers 3 are circumferentially spaced and movable between the connection 22 of pulley 1 and axle 2, resulting in a simple structure that is easy to assemble. Because multiple rollers 3 are arranged between the connection 22 of pulley 1 and axle 2, the contact area between pulley 1 and axle 2 is effectively reduced, decreasing overall frictional resistance and improving the smoothness of pushing and pulling the basket. This solves the problem of uneven pushing and pulling of the basket due to high friction between the rollers and axle.

[0035] refer to Figure 3 The end of the receiving groove away from the mounting part 21 is closed to form a groove sidewall, and the end of the receiving groove near the mounting part 21 is open to form a side opening. The end of the roller 3 away from the mounting part 21 abuts or is clearance-fitted with the groove sidewall of the mounting groove, so as to provide a first limit on the end of the roller 3 away from the mounting part by the groove sidewall of the mounting groove to prevent the roller from slipping out; the end of the roller 3 near the mounting part 21 abuts or is clearance-fitted with the mounting part 21, so as to provide a second limit on the end of the roller 3 near the mounting part 21 by the mounting part 21 to prevent the roller from slipping out. Thus, by cooperating with the groove sidewall of the mounting groove and the fixing plate 211 of the mounting part 21, reliable axial limiting of the roller is achieved without the need for other parts, the structure is simple, easy to assemble, and the manufacturing cost is low.

[0036] refer to Figure 1-3A first arc surface 31 is provided at the end of the roller 3 furthest from the mounting part 21. The first arc surface 31 is in movable contact with the sidewall of the receiving groove, thereby reducing the contact area between the roller 3 and the sidewall of the receiving groove, which helps to reduce frictional resistance. And / or a second arc surface 32 is provided at the end of the roller 3 near the mounting part 21. The second arc surface 32 is in movable contact with the fixing plate 211 of the mounting part 21, thereby reducing the contact area between the roller 3 and the mounting part 21, which helps to reduce frictional resistance. In this embodiment, both the first arc surface 31 and the second arc surface 32 are semi-circular, so that the two ends of the roller 3 have rounded heads.

[0037] refer to Figure 2-6 An annular baffle 12 is provided on the inner surface of the pulley 1 at the end away from the mounting part 21. Multiple first latches 222 are arranged circumferentially at the free end of the connecting part 22. Each of the first latches 222 engages with the side of the annular baffle 12 opposite to the roller 3, thereby ensuring a stable and reliable detachable connection between the pulley 1 and the axle 2. In this embodiment, a portion of the annular baffle 12 forms the sidewall of the receiving groove. The end of the roller 3 near the annular baffle 12 is in movable contact with the annular baffle 12, facilitating the first limiting of the end of the roller 3 away from the mounting part by the annular baffle 12. Therefore, the annular baffle serves two purposes: firstly, it facilitates the connection and fixation of the axle, and secondly, it reliably limits and fixes the roller 3.

[0038] refer to Figure 1-6 The mounting part 21 has a fixing plate 211 arranged near the receiving groove. The fixing plate 211 is integrally formed with the fixing end of the connecting part 22. In addition, the mounting part 21 also has two symmetrically arranged second buckles 213, and a second channel 214 is formed between the two second buckles 213. The end of the roller 3 near the mounting part 21 is in movable contact with the fixing plate 211, thereby realizing the second limiting of the end of the roller 3 near the mounting part by the fixing plate 211. In this embodiment, the mounting part 21 includes a fixing plate 211 and a mounting plate 212 fixedly connected in an "L" shape. Two symmetrically arranged second buckles 213 are integrally formed at the free end of the mounting plate 212. The connecting part 22 has a hollow structure and has a first channel 221. The end of the first channel 221 near the mounting part 21 passes through the fixing plate 211 of the mounting part 21.

[0039] In this embodiment, the specific formation method of the receiving groove includes, but is not limited to, any of the following:

[0040] The first type, reference Figure 3-5A plurality of circumferentially spaced external cavities 13 are recessed on the inner surface of the pulley 1, that is, a plurality of circumferentially spaced external cavities 13 are recessed in the wall of the central channel 111 of the pulley 1. The external cavities 13 open toward the connecting part 22 and the mounting part 21 so that the external cavities 13 communicate with the central channel 111. The outer surface of the connecting part 22 and the external cavities 13 enclose each other to form a receiving groove.

[0041] The second option is to refer to... Figure 7 A plurality of circumferentially spaced recessed cavities 223 are recessed on the outer surface of the connecting portion 22, and the recessed cavities 223 open toward the pulley 1 and the mounting portion 21. The inner surface of the pulley 1 and the recessed cavities 223 enclose each other to form a receiving groove.

[0042] refer to Figure 1-5 In this embodiment, the pulley 1 has an annular flange 14 extending toward the mounting portion 21 on its side facing the mounting portion 21. The annular flange 14 is located around the central channel 111 and abuts against or is clearance-fitted with the fixing plate 211 of the mounting portion 21. This strengthens the pulley and reduces the contact area between the pulley 1 and the mounting portion 21. In addition, a plurality of first reinforcing ribs 151 are integrally formed on the side of the pulley 1 facing away from the mounting portion 21 and are arranged circumferentially at intervals around the annular baffle 12. A plurality of second reinforcing ribs 152 are integrally formed on the side of the pulley 1 facing the mounting portion 21 and are arranged circumferentially at intervals around the annular flange 14. The radial inner end of the second reinforcing rib is integrally formed with the outer peripheral wall of the annular flange 14.

[0043] Example 2

[0044] refer to Figure 8-9 This embodiment provides a basket module, which includes a basket assembly 4 and a roller assembly as described in Embodiment 1. The roller assembly is installed on the left / right outer side wall of the basket assembly 4, thereby solving the problem that the basket push module is not smooth due to the large friction between the pulley and the axle, and improving the smoothness and stability of the basket module.

[0045] In this embodiment, three roller assemblies are installed on the left and right outer side walls of the dish rack assembly 4. These three roller assemblies clamp the dishwasher guide rails together, and all three roller assemblies are slidably connected to the dishwasher guide rails. A fixing wire is provided on the left / right side walls of the dish rack assembly 4. The fixing wire includes a first fixing section 411 and a second fixing section 412. The first fixing section 411 is fixedly connected to the left / right side walls of the dish rack assembly 4 by welding. At least one end of the first fixing section 411 is bent outwards to form the second fixing section 412. The second fixing section 412 is laterally inserted into the first channel 221 of the connecting part 22 to achieve rapid pre-positioning of the roller assemblies. The mounting part 21 engages with the first fixing section 411 to detachably connect and fix the roller assemblies to the dish rack assembly. It can be seen that by having the wheel axle 2 engage with the first fixing section 411 and the second fixing section 412 of the fixing wire, the installation stability and reliability of the roller assembly are significantly improved.

[0046] This embodiment also provides a dishwasher, which includes an inner tub assembly (not shown in the figure) and a dish rack module as described above. Guide rails (not shown in the figure) are respectively installed on the left and right inner side walls of the inner tub assembly. The dish rack module is movably disposed inside the inner tub assembly, and the dish rack assembly is slidably connected to the corresponding guide rails via roller assemblies. Thus, through the cooperation of the roller assemblies and guide rails, the dish rack module can be smoothly pushed into or pulled out of the inner tub assembly, improving the user experience.

[0047] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A roller assembly, characterized by The roller assembly includes; The pulley (1) has a transversely arranged central channel (111); The axle (2) includes a mounting part (21) and a connecting part (22) that are fixedly connected to each other. The connecting part (22) is transversely inserted through the central channel (111) and engages with the pulley (1). The pulley (1) can rotate around the connecting part (22). The roller (3) has a plurality of circumferentially spaced receiving grooves formed between the outer surface of the connecting part (22) and the inner surface of the pulley (1), and the roller (3) is movably disposed in each of the receiving grooves.

2. A roller assembly according to claim 1, wherein The end of the receiving groove away from the mounting part (21) is closed to form a groove sidewall, and the end of the receiving groove near the mounting part (21) is open to form an opening. The opposite ends of the roller (3) abut or are clearance-fitted with the groove sidewall of the receiving groove and the mounting part (21) respectively.

3. A roller assembly according to claim 2, wherein A first arc surface (31) is provided at the end of the roller (3) away from the mounting part (21), and the first arc surface (31) is in movable contact with the side wall of the receiving groove; and / or a second arc surface (32) is provided at the end of the roller (3) near the mounting part (21), and the second arc surface (32) is in movable contact with the mounting part (21).

4. A roller assembly according to claim 1, wherein An annular baffle (12) is provided at one end of the inner surface of the pulley (1) away from the mounting part (21), and a plurality of first buckles (222) are provided at the free end of the connecting part (22) at circumferential intervals. The plurality of first buckles (222) are engaged with the side of the annular baffle (12) away from the roller (3).

5. A roller assembly according to claim 4, wherein A portion of the annular baffle (12) forms the sidewall of the receiving groove, and one end of the roller (3) near the annular baffle (12) is in active contact with the annular baffle (12).

6. A roller assembly according to any one of claims 1-5, wherein The inner surface of the pulley (1) is provided with a plurality of external concave cavities (13) that open toward the connecting part (22) and are arranged circumferentially at intervals. The external concave cavities (13) and the outer surface of the connecting part (22) enclose each other to form the receiving groove.

7. A roller assembly according to any one of claims 1-5, wherein A plurality of recessed cavities (223) are provided on the outer surface of the connecting part (22), which open toward the pulley (1) and are arranged circumferentially. The recessed cavities (223) are surrounded by the inner surface of the pulley (1) to form the receiving groove.

8. A roller assembly according to any one of claims 1-5, wherein, The mounting portion (21) is provided with two symmetrically arranged second latches (213), and a second channel (214) is formed between the two second latches (213); and / or The pulley (1) has an annular flange (14) extending toward the mounting part (21) on the side facing the mounting part (21). The annular flange (14) is located around the central channel (111) and abuts against or is clearance-fitted with the mounting part (21).

9. A basket module characterized in that, It includes a basket assembly (4) and a roller assembly as described in any one of claims 1-8, the roller assembly being mounted on the left / right outer side wall of the basket assembly (4).

10. A basket module according to claim 9, wherein, A fixing wire is arranged outside the left / right side wall of the basket assembly (4), and comprises a first fixing section (411) and a second fixing section (412). The first fixing section (411) is fixedly connected to the left / right side wall of the basket assembly (4). At least one end of the first fixing section (411) is outwardly bent to form the second fixing section (412). The second fixing section (412) is transversely inserted into the first channel (221) of the connecting portion (22). The mounting portion (21) is in clamping connection with the first fixing section (411).

11. A dishwasher, characterized in that A basket module as claimed in claim 9 or 10.

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