Cleaning machine

Abstract

The cleaning machine comprises a box body and a dish rack, an opening is formed in the front side of the box body, the dish rack can be connected to the inner side wall of the box body in a front-back telescopic mode, the cleaning machine further comprises a driving mechanism capable of enabling the dish rack to stretch back and forth, and the driving mechanism comprises a gear and rack transmission structure arranged in the box body and a driving piece arranged outside the box body. And a stabilizing structure capable of guiding the dish rack and limiting the end stroke in the back-and-forth moving process of the dish rack is also arranged below the gear rack transmission structure. By the adoption of the structure, the dish rack can stretch out and draw back automatically, a user does not need to pull out and draw back the dish rack manually, and use is convenient; the driving mechanism adopts a gear and rack transmission structure, so that installation and maintenance are facilitated; the stable structure is arranged below the gear and rack transmission structure, the stable structure integrates a guide structure in the front-back moving process of the dish rack and an end stroke limiting structure after the dish rack is pulled out of or retreats back to the box body, the overall structure is simplified, and the installation space is saved.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to a cleaning machine for cleaning tableware, fruits and vegetables. Background Technology

[0002] As people's living standards continue to improve, dishwashers, as a type of kitchen appliance, are increasingly entering households.

[0003] Dishwashers typically use a dish rack to hold the dishes, and a spray arm sprays water to clean the dishes in the rack. For example, existing patent ZL 201720605459.3, "A Dishwasher," discloses a structure that includes an inner tub with a washing chamber and a dish rack disposed within the washing chamber. The side wall of the dish rack has a slider, and the side wall of the washing chamber is fitted with opposing rollers. The rollers have guide grooves formed circumferentially. The dishwasher also includes a track slidably connected between pairs of guide grooves, and the slider of the dish rack is slidably connected within the track. The track in the dishwasher guides the dish rack.

[0004] Most dishwashers currently on the market only allow customers to manually pull out and retract the dish racks. Improvements are mostly focused on smoothing the push-pull motion to minimize resistance. Manually pulling out and retracting the dish racks is very inconvenient, especially when customers are retrieving or placing dishes; they must first pull out the rack to do so, which is inconvenient.

[0005] Therefore, the current structure of the cleaning machine needs further improvement. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a washing machine that can automatically extend and retract the dish rack and is easy to use, in light of the current state of the technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0008] A washing machine includes a housing and a dish rack. The housing has an opening on its front side. The dish rack is telescopically connected to the inner wall of the housing. The machine also includes a drive mechanism that enables the dish rack to telescopically extend and retract. The drive mechanism includes a gear and rack transmission structure inside the housing and a drive component outside the housing. Below the gear and rack transmission structure, there is a stabilizing structure that guides and limits the end travel of the dish rack during its telescopic movement.

[0009] The above structure enables automatic extension and retraction of the dish rack, eliminating the need for manual pulling out and retraction by the user, making it convenient to use. The drive mechanism adopts a gear and rack transmission structure, which facilitates installation and maintenance. A stabilizing structure is set below the gear and rack transmission structure. This stabilizing structure integrates the guiding structure for the forward and backward movement of the dish rack and the end travel limit structure after the dish rack is pulled out or retracted from the housing, simplifying the overall structure and saving installation space.

[0010] Preferably, the driving mechanism includes:

[0011] A rack is provided on the outside of the bowl rack and extends along the front-to-back direction of the bowl rack, with the teeth of the rack facing downwards;

[0012] A gear, rotatably mounted on the inner wall of the housing and arranged near the opening, the top of the gear meshing with a rack; and

[0013] The drive unit is located on the outside of the housing, and its output shaft passes through the side wall of the housing and is connected to the gear.

[0014] With the above structure, the teeth of the rack are arranged downwards, and the gear that meshes with the rack is located at the opening of the housing. This not only facilitates installation and maintenance, but also, compared to the drive mechanism located at the rear of the housing, the drive mechanism of this utility model occupies less space, does not require occupying the installation space at the rear of the dishwasher, and does not affect the need to maximize the capacity of the dishwasher.

[0015] Preferably, the racks and gears are provided in two sets and symmetrically arranged on both sides of the bowl rack. The two gears share a single driving component and are connected by a transmission rod, which is laterally positioned at the opening and within the opening. With this structure, racks and gears are equally installed on both sides of the bowl rack. Except for the driving component, all other components are mirror images of the bowl rack and connected in the middle by the transmission rod. For ease of driving, the connecting ports of the transmission rod and gears can be hexagonal, inserted from one end and then secured with retaining rings or other limiting components to prevent them from disengaging. When the driving component drives one gear on one side, the driven gear rotates, thus synchronously moving the racks forward and backward on both sides, maintaining the synchronicity of the driving on both sides of the bowl rack and minimizing the risk of the bowl rack jamming.

[0016] Preferably, the rack has downwardly extending support arms at both ends, and a sliding rod extending forward and backward connects the two support arms. The transmission rod is located below the rack and above the sliding rod, and cooperates with the sliding rod for guidance. The support arms constitute a limiting part that can limit the cup holder when it is pulled out or retracted from the box. The support arms and the sliding rod together form the stable structure. Using the above structure, a stable structure is achieved with a simple and compact design and a small installation space. Furthermore, the stable structure directly constrains the rack, eliminating the need for other connectors to connect it to the components inside the box, making connection and assembly convenient.

[0017] Preferably, the teeth of the rack are arranged near the outer edge of the lower surface of the rack, the support arm is arranged at the inner edge of the lower surface of the rack, and the slide rod is arranged parallel to the teeth and located below the teeth. This structure further saves installation space and avoids interference between the stabilizing structure and the gear-rack engagement.

[0018] For ease of installation, the lower surface of the rack has a downward-facing U-shaped clamping groove, and the end of the slide rod has an upward-extending clamping arm that is inserted into the clamping groove and secured by a pin. The top edge of the rack has an upward-extending hanging arm, through which the rack is locked to the outer wall of the bowl rack. This structure reduces the space occupied by the rack on the side of the bowl rack, ensuring installation reliability while eliminating interference between the rack and the existing guide rails and rollers on the side of the bowl rack.

[0019] Preferably, the inner sidewall of the housing is provided with a first mounting plate, which has a shaft hole for inserting a gear bushing and a mounting sleeve extending axially along the edge of the shaft hole. The outer sidewall of the housing is provided with a second mounting plate, which has a mounting hole for mating with the outer end of the mounting sleeve. This structure improves the installation strength between the housing sidewall and the gear mounting point, enhances installation compactness and reliability, further improves force transmission, and ensures that the cup holder remains smooth and unobstructed during extension and retraction.

[0020] Preferably, the gear bushing is rotatably inserted into the shaft hole, and the output shaft of the drive component extends through the outer end of the mounting hole into the shaft hole and is engaged with the gear bushing. The drive component is locked to the outer side wall of the second assembly plate, and a rotary bearing is provided at the output shaft of the drive component. This structure reduces friction, makes rotation smoother, and prevents the dish rack from jamming when there are too many dishes or excessive weight.

[0021] Compared with the prior art, the advantages of this utility model are as follows: This utility model realizes the automatic extension and retraction of the dish rack by setting a drive mechanism, eliminating the need for the user to manually pull out and retract the dish rack, making it convenient to use; the drive mechanism adopts a gear and rack transmission structure, which facilitates installation and maintenance; a stabilizing structure is set below the gear and rack transmission structure, which integrates the guiding structure for the forward and backward movement of the dish rack and the end stroke limiting structure after the dish rack is pulled out or retracted from the box, simplifying the overall structure and saving installation space. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 A diagram from another angle;

[0024] Figure 3 for Figure 2 Enlarged view of section A;

[0025] Figure 4 for Figure 3 Sectional view of the corresponding part;

[0026] Figure 5 This is a diagram showing the fit between the bowl rack and the drive mechanism in an embodiment of this utility model.

[0027] Figure 6 for Figure 5 Another perspective diagram. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-6 As shown, the washing machine in this embodiment includes a housing 1 and a dish rack 2. The housing 1 has an opening 11 on its front side. The dish rack 2 is retractably connected to the inner wall of the housing 1. Rollers (not shown) are mounted on the outer wall of the dish rack 2. A slide rail 02 is provided on the inner wall of the housing 1. The dish rack 2 is guided by rollers that clamp onto both sides of the slide rail. The dish rack 2 can be pulled out of the housing 1 through the opening 11 or retracted back into the housing 1 through the opening 11.

[0030] The washing machine in this embodiment is also provided with a drive mechanism 3 that enables the dish rack 2 to extend and retract back and forth. The drive mechanism 3 includes a gear 32 and rack 31 transmission structure located inside the housing 1 and a drive component 33 located outside the housing 1. A stabilizing structure is also provided below the gear 32 and rack 31 transmission structure to guide and limit the end stroke of the dish rack 2 during its back and forth movement.

[0031] The above structure enables the automatic extension and retraction of the dish rack 2, eliminating the need for manual pulling out and retraction by the user, making it convenient to use. The drive mechanism 3 adopts a gear 32 and rack 31 transmission structure, which facilitates installation and maintenance. A stabilizing structure is set below the gear 32 and rack 31 transmission structure. This stabilizing structure integrates the guiding structure for the forward and backward movement of the dish rack 2 and the end stroke limiting structure after the dish rack 2 is pulled out or retracted from the housing 1, simplifying the overall structure and saving installation space.

[0032] The drive mechanism 3 in this embodiment includes:

[0033] A rack 31 is located on the outside of the bowl rack 2 and extends along the front-back direction of the bowl rack 2, with the teeth of the rack 31 facing downwards;

[0034] Gear 32 is rotatably mounted on the inner wall of housing 1 and arranged near the opening 11; the top of gear 32 meshes with rack 31; and

[0035] The drive unit 33 is located on the outside of the housing 1 and its output shaft passes through the side wall of the housing 1 and is connected to the gear 32.

[0036] With the above structure, the teeth of the rack 31 are arranged downwards, and the gear 32 that meshes with the rack 31 is set at the opening 11 of the housing 1. This not only facilitates installation and maintenance, but also, compared to the drive mechanism 3 located at the rear of the housing 1, the drive mechanism 3 of this utility model occupies less space, does not need to occupy the installation space at the rear of the dishwasher, and does not affect the requirement to make the dishwasher's volume larger.

[0037] Two sets of racks 31 and gears 32 are symmetrically arranged on both sides of the bowl rack 2. The two gears 32 share a single driving element 33 and are connected by a transmission rod 34, which is laterally positioned within the opening 11. With this structure, racks 31 and gears 32 are equally installed on both sides of the bowl rack 2. Except for the driving element 33, all other components are mirror images of the bowl rack 2, connected by the transmission rod 34. For ease of operation, the connecting ports of the transmission rod 34 and gears 32 can be hexagonal, inserted from one end and then secured with retaining rings or other limiting components to prevent disengagement. When the driving element 33 drives one gear 32 on one side, the driven gear 32 rotates, thus synchronously moving the racks 31 forward and backward, maintaining the synchronicity of the drive on both sides of the bowl rack 2 and minimizing the risk of jamming.

[0038] The rack 31 has downwardly extending connecting arms 310 at both ends, and a sliding rod 35 extending forward and backward connects the two connecting arms. The transmission rod 34 is located below the rack 31 and above the sliding rod 35, and cooperates with the sliding rod 35 for guidance. The connecting arms constitute a limiting part that can limit the cup holder 2 when it is pulled out or retracted into the housing 1. The support arm, connecting arm, and sliding rod 35 together form a stable structure. With the above structure, a stable structure is achieved with a simple and compact structure and a small installation space. Moreover, the stable structure directly constrains the rack 31, eliminating the need to connect it to the various components inside the housing 1 through other connecting parts, making connection and assembly convenient.

[0039] The teeth 311 of the rack 31 are arranged near the outer edge on the lower surface of the rack 31, and the connecting arm is arranged at the inner edge of the lower surface of the rack 31. The slide rod 35 is arranged parallel to the teeth 311 and located below the teeth. This structure further saves installation space and avoids interference between the stabilizing structure and the meshing of the gear 32 and the rack 31.

[0040] For ease of installation, the lower surface of the rack 31 has a downward-facing U-shaped clamping groove 313, and the end of the slide rod 35 has an upward-extending clamping arm 351, which is inserted into the clamping groove 313 and limited by a pin. The clamping arm 351, when engaged with the clamping groove 313, forms the connecting arm at the rear end of the slide rod 35. The top edge of the rack 31 has an upward-extending hanging arm 312, through which the rack 31 is locked to the outer wall of the bowl rack 2. This structure reduces the space occupied by the rack 31 on the side of the bowl rack 2, ensuring installation reliability while eliminating interference between the rack 31 and the existing guide rails and rollers on the side of the bowl rack 2.

[0041] A first mounting plate 4 is provided on the inner side wall of the housing 1, and a second mounting plate 5 is provided on the outer side wall of the housing 1. The first mounting plate 4 has a shaft hole 41 for inserting the bushing 312 of the gear 32 and a mounting sleeve 42 extending axially along the edge of the shaft hole 41. The second mounting plate 5 has a mounting hole 51 that mates with the outer end of the mounting sleeve 42. The above structure is adopted to improve the installation strength at the mounting point between the side wall of the housing 1 and the gear 32, improve the installation compactness and reliability, further improve the force transmission effect, and ensure that the cup holder 2 remains smooth and unobstructed during the pulling out and retracting process.

[0042] The bushing 321 of gear 32 is rotatably inserted into the shaft hole 41. The output shaft 331 of drive member 33 passes through the outer end of mounting hole 51, extends into shaft hole 41, and is engaged with the bushing 321 of gear 32. Drive member 33 is locked to the outer side wall of second mounting plate 5, and a rotary bearing 7 is provided at the output shaft 331 of drive member 33. The above structure reduces friction, makes rotation smoother, and avoids jamming of bowl rack 2 when there are too many tableware or too much weight.

[0043] This embodiment achieves automatic extension and retraction of the dish rack 2 by setting a drive mechanism 3, eliminating the need for the user to manually pull out and retract the dish rack 2, making it convenient to use. The drive mechanism 3 adopts a gear 32 and rack 31 transmission structure, which facilitates installation and maintenance. A stabilizing structure is set below the gear 32 and rack 31 transmission structure. This stabilizing structure integrates the guiding structure for the forward and backward movement of the dish rack 2 and the end stroke limiting structure after the dish rack 2 is pulled out or retracted into the housing 1, simplifying the overall structure and saving installation space.

[0044] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine comprising a box (1) and a bowl rack (2), the box (1) being provided with an open front side, the bowl rack (2) being telescopically connected to the inner side wall of the box (1), characterized in that: The driving mechanism (3) is arranged on the outside of the box body (1) and comprises a gear (32) and a driving member (33).

2. The cleaning machine of claim 1, wherein: The driving mechanism (3) comprises a rack (31) arranged on the outside of the bowl rack (2) and extending along the front-to-back direction of the bowl rack (2); a gear (32) rotatably arranged on the inner side wall of the box body (1) and close to the opening, the gear (32) being engaged with the rack (31); and a driving member (33) arranged on the outside of the box body (1) and having an output shaft connected with the gear (32).

3. The cleaning machine of claim 2, wherein: The rack (31) and the gear (32) are both provided with two groups and symmetrically arranged on both sides of the bowl rack (2), the two gears (32) share one driving member (33), and the two gears (32) are drivingly connected through a transmission rod (34).

4. The cleaning machine of claim 3, wherein: The two ends of the rack (31) are respectively provided with downwardly extending support arms, the two support arms are connected with a front-to-back extending slide rod (35), the transmission rod (34) is located below the rack (31) and above the slide rod (35) and guidingly matches with the slide rod (35), the support arms form limiting portions for limiting the bowl rack (2) in the state of being pulled out of or retracted into the box body (1), and the support arms and the slide rod (35) jointly form the stabilizing structure.

5. The cleaning machine of claim 4, wherein: The teeth (311) of the rack (31) are arranged on the lower surface of the rack (31) close to the outer edge, the support arms are arranged at the inner edge of the lower surface of the rack (31), and the slide rod (35) is arranged in parallel with the teeth (311) and below the teeth (311).

6. The cleaning machine of claim 4, wherein: The lower surface of the rack (31) is provided with a U-shaped clamping groove (313) with an opening facing downward, the end of the slide rod (35) is provided with an upwardly extending clamping arm (351), the clamping arm (351) is inserted into the clamping groove (313) and limited by a pin.

7. The cleaning machine according to any one of claims 2 to 6, characterized in that: The top edge of the rack (31) is provided with an upwardly extending hanging arm (312), and the rack (31) is locked and connected to the outer side wall of the bowl rack (2) through the hanging arm (312).

8. The cleaning machine according to any one of claims 2 to 6, characterized in that: The inner side wall of the box body (1) is provided with a first assembly plate (4), the outer side wall of the box body (1) is provided with a second assembly plate (5), the first assembly plate (4) is provided with a shaft hole for inserting a shaft sleeve of the gear (32) and a mounting sleeve extending axially along the edge of the shaft hole, and the second assembly plate (5) is provided with a mounting hole matching with the outer end of the mounting sleeve.

9. The cleaning machine of claim 8, wherein: The shaft sleeve of the gear (32) is rotatably inserted into the shaft hole, and the output shaft of the driving member (33) extends into the shaft hole through the outer end of the mounting hole and is connected with the shaft sleeve of the gear (32).

10. The cleaning machine of claim 8, wherein: The driving member (33) is locked and connected to the outer side wall of the second assembly plate (5), and the output shaft of the driving member (33) is provided with a rotating bearing.

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