Patent CN212368563U
Updated October 24, 2026Soap-Dispensing Dish Brush That Refills in Its Stand
Soap-dispensing dish brushes have a familiar flaw: the handle has to be unscrewed and refilled from a bottle, which is messy, so most people stop using the feature. This brush refills itself. Its stand holds a detergent tank above the brush; when the brush is parked in the stand, a filling channel and one-way valve connect the tank to a small buffer chamber in the brush body and soap flows in. Off the stand, the valve closes so nothing drips. While washing, the user presses a soft button on the brush and a dose of soap comes out through holes into the bristles, brush ball or sponge.
- China utility model - in force in China until Jun 2030 at most
- No filings outside China
- Dish brushes & sink caddies
- PP or ABS body, valves, bristles or sponge

Splat! What let you down?
🔁
Refills when parked
Putting the brush back in its stand connects it to the detergent tank and tops up its chamber.
👆
Press to dose
A soft button on the brush squeezes the chamber and pushes soap into the bristles.
🚫
No drips
One-way valves close the filling channel and the outlet holes when the brush is lifted out.
🧽
Swappable heads
Bristles, a brush ball or a sponge can be used as the scrubbing part.
Bring this product to market
- ✓ Patent vetted China-only family and legal status checked
- 2 Product brief · now How it works, uses and options written up
- 3 Prototype First samples for buyers to review
- 4 Pilot run Small first batch for launch customers
- 5 Volume production Repeat orders at scale
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The problem
Dish brushes with a soap-filled handle are popular because they save reaching for the bottle - but the handle holds little, and refilling it means unscrewing a cap and pouring detergent into a narrow opening over the sink. Many users give up and use the brush dry. Countertop soap dispensers solve dosing but not the brush. The patent combines the two: a stand that stores the detergent and a brush that refills itself every time it is put away.
The solution
The patent splits the tool into a docking stand and a brush:
- The liquid storage unit (1) is a detergent tank (3) held in a stand (4).
- The cleaning unit (2) is a brush body (5) with a scrubbing part (6) - bristles, a brush ball or a sponge.
- Inside the brush body is a buffer chamber (8) for detergent.
- The stand has a filling channel (7) that meets a filling hole (9) in the brush when the brush is parked. A first one-way valve opens when the brush is inserted and closes when it is lifted out, so the channel does not drip.
- The tank sits higher than the chamber, so detergent flows down into the brush; the tank can also have a press pump (32). Air vents (8a, 3a) on chamber and tank let the liquid flow.
- The brush body has outlet holes (61) toward the bristles, with a check valve (52), and an elastic press button (53). Pressing it squeezes the chamber and pushes detergent out to the bristles.

Who it is for
- Kitchen and cleaning-tool brands looking for a dish brush with a real refill advantage over existing soap-handle brushes.
- Sink caddy and organizer makers who can add a detergent function to a product customers already buy.
- Detergent brands that want a branded dispensing system using their own refill bottles.
- Bathroom and household-cleaning lines - the same docking idea works for tile and toilet brushes with cleaner.
How it works
The main parts

| No. | Part | What it does |
|---|---|---|
| 3 | Detergent tank | Stores detergent above the brush; optional press pump (32). |
| 4 | Stand | Holds the tank and the parked brush; contains the filling channel (7). |
| 5 | Brush body | Handle with the buffer chamber (8) and filling hole (9). |
| 6 | Scrubbing part | Bristles, brush ball or sponge. |
| 7 | Filling channel | Carries detergent from the tank to the brush. |
| 8 | Buffer chamber | Small reservoir inside the brush. |
| 52, 61 | Check valve and outlet holes | Let detergent out to the bristles only when pressed. |
| 53 | Press button | Elastic part that squeezes the chamber. |
| 8a, 3a | Air vents | Let air in so the liquid can flow. |
Using it
- Fill the tank in the stand with dish soap.
- Park the brush in the stand. The valve opens and the chamber fills.
- Lift the brush out to wash. The valve closes.
- Press the button to add soap to the bristles as needed.
- Put it back - it refills while it waits for the next wash.

Other versions
The patent shows four layouts: the basic dock, a second valve arrangement, a wall or counter box with a horizontal brush (figures 10-11), and a round tank with an angled brush (figures 12-13).

Applications
Home kitchen sinks
A brush that always has soap without refilling a handle, standing tidily by the sink.
Small apartments and RVs
One sink-side unit replaces a soap bottle and a brush holder.
Office kitchens and break rooms
Shared brushes that stay ready and do not leave puddles of soap.
Bathroom cleaning
A toilet or tile brush that docks in a cleaner tank - one version of the same idea.
Branded detergent systems
A detergent brand can sell the stand and brush with refill bottles that fit the tank.
Where it is less suitable
- Commercial dishwashing - restaurants use pre-rinse sprayers and dish machines; this is a household tool.
- Thick or gel detergents - gravity filling suits ordinary liquid dish soap; very thick products may not flow through the valves.
Frequently asked questions
How does the brush refill itself?
The stand holds a detergent tank above the brush. When you park the brush, a filling channel in the stand meets a hole in the brush body and a one-way valve opens, so soap flows down into a small chamber in the brush.
Will it drip when I lift the brush out?
The patent places a one-way valve at the filling channel that closes when the brush is removed, and a check valve at the outlet holes, so soap only comes out when you press the button.
How much soap comes out per press?
The patent does not give a dose. The chamber and outlet sizes are set in design, and the dose is tuned on prototypes with ordinary dish soap.
Which detergents can I use?
Regular liquid dish soap flows best. Very thick gels may need a different valve or the tank’s press pump; we test the products you plan to recommend.
Can the brush head be replaced?
The patent names bristles, brush balls and sponges as the scrubbing part. A replaceable head is a common design choice and adds a refill sale.
Can it be wall-mounted?
Yes. One version in the patent is a box-style unit with the brush lying sideways, which suits wall or splash-back mounting.
Can this design be made and sold in the US?
The patent was filed only in China, so it does not restrict the design in the US. It is in force in China until June 2030 at most, and making or selling it there needs the owner’s permission. Soap-dispensing brushes may be covered by other US patents - see Patent & Production - so we recommend a freedom-to-operate check before volume production.
Are you affiliated with the patent owner?
No. IP2M is an independent design and manufacturing service working from the public patent document.
Request a quote
Click Request a Quote below to see our email address - copy it, or open your email app with a ready-made message. Please mention patent CN212368563U in the subject.
Helpful details to include:
- Your company and channel (kitchen brand, detergent brand, retailer, resale)
- Brush type - dish, pot, bottle or bathroom brush - and head style
- Stand style - countertop, sink edge or wall
- Tank size, colors and branding
- Estimated quantity and target price
- Timeline - when you would like samples and the first shipment
You can also reach us at (332) 203-9997.
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This page is based on the public patent document CN212368563U, assigned to Ningbo Haishu Liangpin Living Goods Co., Ltd. (宁波市海曙良品生活用品有限公司). IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.