Patent Application
20250082141
This application claims the priority benefit of China application serial no. 202311161934.9, filed on Sep. 11, 2023. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The present disclosure relates to the technical field of intelligent toilets, and particularly to a plastic bag pull-down device for an intelligent packaging toilet, and an intelligent packaging toilet.
Toilets are indispensable bathroom products in families. With the development of technologies, intelligent toilets with diversified functions, such as constant temperature, cleansing, automatic packaging, etc. have been developed. The appearance of such toilets has greatly improved user experience.
At present, there are generally two types of toilets on the market: flush toilets and non-flush toilets. The portability and operability of flush toilets are not as good as those of non-flush toilets. Non-flush toilets generally use bags to package excrement for disposal. Manual placement of bags is troublesome and has hygiene problems, so automatic replacement of plastic bags is often used. Suction-based bag placement and roller-driven bag placement are two methods commonly used to replace plastic bags in intelligent toilets. For the suction-based bag placement method, negative pressure is formed between the plastic bag and the bowl by exhausting air using a fan, and the plastic bag is forced into the bowl by atmospheric pressure. However, due to the complex structure in the bowl, greater pressure is required for the introduction and spreading of the plastic bag in the bowl. As a result, the plastic bag cannot be placed down to an expected position, and various parts of the plastic bag are likely to be contaminated. For the roller-driven bag placement method, a motor is used to synchronously drive gear transmission mechanisms on two sides by connecting rods, to drive the rollers to rotate. Because there is a squeezing force between the rollers, the plastic bag can be pulled downward and replaced by friction. However, the connecting rod transmission has to be arranged in front or back, leading to a long transmission path and high energy consumption by friction between the gears. In addition, errors of gear manufacturing will result in poor reliability.
To solve the problem of poor effect of plastic bag pull-down devices of existing intelligent packaging toilets, the present disclosure provides a plastic bag pull-down device for an intelligent packaging toilet, and an intelligent packaging toilet. The technical solution of the present disclosure is implemented as follows.
A plastic bag pull-down device for an intelligent packaging toilet is provided, including two roller drive assemblies, where
Preferably, each of the roller drive assemblies further includes a torsion spring and a limiting bump; where
Preferably, the first roller and the second roller are each wrapped with a rubber material.
An intelligent packaging toilet is provided, including a base, a toilet seat, and the plastic bag pull-down device, where the two roller drive assemblies are respectively mounted on two sides of a bottom of the toilet seat.
The motor is a direct-current (DC) gear motor.
In the present disclosure, two DC gear motors are used to respectively drive the rubber rollers on the two sides. Synchronous rotation of the two motors is realized through model selection and a reasonable control strategy. A single pair of gears is used on each side to realize the rotation of the two rollers in opposite directions, thereby solving the problems of poor plastic bag pull-down and replacement effects of existing intelligent packaging toilets. The plastic bag pull-down device for the intelligent packaging toilet involves a simple structure, low costs, a higher space utilization, and improved implementation effects.
In order to more clearly explain the technical solutions in the embodiments of the present disclosure or in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Obviously, the drawings depicted below are merely an embodiment of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts.
Like parts and components are denoted by like reference numerals. It should be noted that the terms such as “front”, “rear”, “left”, “right”, “upper”, and “lower” used in the following description refer to directions in the drawings, and the terms such as “bottom surface”, “top surface”, “inner”, and “outer” respectively refer to directions toward or away from the geometric center of a particular component.
In the drawings, the reference numerals respectively represent:
The technical solutions in the embodiments of the present disclosure will be described clearly and fully with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the embodiments described are merely some embodiments, rather than all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present disclosure shall fall within the protection scope of the present disclosure.
In a specific embodiment, as shown in
As shown in
In this embodiment, the roller drive assemblies 2 on the two sides are respectively driven by their respective motors 2-1. The motor 2-1 drives the first gear 2-4 and the second gear 2-5 inside the housing 2-3 to rotate, to drive the first roller 2-6 and the second roller 2-7 to rotate, so as to pull downward and rotate the plastic bag. A middle position of the first roller 2-6 and the second roller 2-7 is mounted corresponding to an inner ring of the toilet to realize the pull-down and replacement of the plastic bag.
The first gear 2-4 is fixed to the motor shaft 2-2 and connected to the first roller 2-6 by a D-type key connection. The second gear 2-5 and the second roller 2-7 are connected to the transmission shaft 2-8. The first roller 2-6 and the second roller 2-7 are each wrapped with a rubber material to increase the friction and provide certain deformation ability. The connection mode between the second gear 2-5 and the transmission shaft 2-8 is pin connection. The second gear 2-5 is fixed in a pin hole on the transmission shaft 2-8. The second roller 2-7 is connected to the transmission shaft 2-8 by a D-type key. The first gear 2-4 and the second gear 2-5 mesh with each other in the housing 2-3. The first gear 2-4 drives the second gear 2-5 to respectively drive the first roller 2-6 and the second roller 2-7 to rotate. The transmission shaft 2-8 is fixed in a slot hole on the housing 2-3, and the transmission shaft 2-8 is axially positioned by the limiting bump 2-10 and the torsion spring 2-9. The motor 2-1 is fixed in a hole on the housing 2-3 by a bolt. During the operation of the plastic bag pull-down device, the two rollers need to provide certain friction and squeezing so that the plastic bag can be normally pulled downward and replaced. However, if shafts of the two rollers are configured in a completely fixed form, the rollers will be relaxed due to the wear and aging of rubber after a period of use, resulting in the failure of the pull-down mechanism. Moreover, after installation, the positions of the two rubber rollers stick together and are inseparable, making it very difficult for the plastic bag to enter between the rollers. Therefore, during the arrangement of the transmission shaft 2-8, a hole for positioning the transmission shaft 2-8 on the housing 2-3 is configured as a slot hole, to provide a space for movement of the transmission shaft 2-8, so that the transmission shaft 2-8 can slide to a certain extent in the slot hole. In addition, the torsion spring 2-9 is arranged to press against the transmission shaft 2-8, to provide a pre-tightening force between the two rollers to prevent loosening of the two rollers. To implement packaging for the first time, a plastic bag needs to be manually pressed into between the rollers, and the movable shafts will be separated when pushed by the external force, so that the two rollers are separated from each other to facilitate placement of the plastic bag.
In the actual working process, to place a plastic bag for the first time, the user needs to manually place the plastic bag into between the two rollers on each side, and the plastic bag is pulled downward by a squeezing force and a friction force between the rollers. Because the transmission shafts 2-8 of the two second rollers 2-7 are fixed by the torsion springs 2-9, the two rollers can be separated with a small force during use, and then the plastic bag can be placed into between the rollers. The motors 2-1 on both sides rotate to drive the gears to rotate, to drive the rollers to rotate to realize the pull-down of the plastic bag.
It should be noted that the foregoing descriptions are merely some embodiments of the present disclosure, but are not to limit the present disclosure. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure shall fall within the protection scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202311161934.9 | Sep 2023 | CN | national |
