電動歯ブラシは防水ですか？

電動歯ブラシは防水ですか？

Are electric toothbrushes waterproof? Check the rating of the model you choose. An IPX7-rated handle is tested for temporary immersion, commonly described for a small handle as one meter of water for 30 minutes. That rating does not automatically cover the charging base or authorize shower use. Here is how to read the rating, keep the right parts dry and care for your brush around water.

電動歯ブラシの「防水」が実際に意味すること

“Waterproof” and “water resistant” do not describe unlimited protection. For an electric toothbrush, look at the IP rating and the manufacturer’s instructions: splash, water-jet and immersion protection are assessed under different test conditions. IPX7 describes temporary immersion.

IPX7等級の根拠

IP ratings are defined in the International Electrotechnical Commission standard IEC 60529. The second numeral describes protection against water. IPX7 covers temporary immersion, commonly described for a small handle as one meter for 30 minutes. “X” means that a protection level against solid objects is not specified in this code. An IPX7 rating does not state a dust-protection level or, by itself, establish third-party certification.

電動歯ブラシは防水？IPX等級を解説

IPX4 covers splashing water, IPX5 and IPX6 cover water jets, and IPX7 and IPX8 cover immersion under defined conditions. An immersion rating does not automatically include protection against jets.

An IPX7-rated electric toothbrush has protection against temporary immersion under the specified test conditions. For rinsing or shower use, check the manufacturer’s instructions; the rating alone does not cover water jets, hot steam or prolonged soaking. Keep the charger away from wet areas.

IPX7等級はどのように検証されるか

An IPX7 claim should be supported by testing to IEC 60529. For a small toothbrush handle, the immersion conditions are commonly described as one meter for 30 minutes. After testing, the product is inspected and assessed against the applicable ingress, function and safety criteria. Checking only whether water reached the electronics does not describe the complete acceptance criteria.

A failed immersion test can result from design, materials or assembly. Check the housing seams, drive-shaft seal, charging port and button membrane. Validate the sealing design before mass production and control its consistency during assembly.

Our production controls include 100% line inspection, with sealing checks defined in the control plan alongside battery aging, drop resistance and motor-frequency consistency. The reliability program uses the IPX7 immersion method in GB 4208-2017: one meter of water for 30 minutes, followed by inspection and assessment against the applicable criteria. Destructive sample inspection and checks on every saleable unit are separate stages. Our reliability laboratory has logged more than 450 test items over nine months, including a 72-hour full-unit operation test with a waterproofing recheck every 24 hours, one-meter drops onto six faces per GB/T 2423.7-2008, and 48-hour salt spray per GB/T 2423.17-2008. These reports document the tested model and conditions for buyers.

電動歯ブラシをシャワー中に使えますか？

You can use an electric toothbrush in the shower if its manufacturer permits this for your model. IPX7 alone does not establish protection against shower jets or hot steam. Check the instructions before making shower brushing part of your routine.

Keep the charging base outside the wet area and charge in a dry location. Never place the brush on a plugged-in base in the shower. If shower use is permitted, follow the model’s cleaning and drying instructions; repeated exposure to hot steam and soap can affect the finish and seals.

電動歯ブラシで防水仕様ではない部品

The handpiece, charging base, port and accessories can have different protection ratings. Check each component separately, particularly these areas:

よくある弱点

• 充電台。多くの充電台は防滴仕様に限られるか、防水等級が表示されていません。水が直接かからない場所に置いてください。
• 充電ポート。USB端子またはピン充電端子のあるモデルでは、ポートが弱点になることがあります。すすぐ前にゴムカバーをしっかり閉じてください。
• ひびの入ったシールやガスケット。防水性はシール部に左右されます。シールにひびが入ったり、ゴム製ポートカバーが破れたりすると、水がバッテリーや電子部品に達するおそれがあります。
• トラベルケース。ケースはバッグの中でブラシを保護しますが、防水仕様とは限りません。収納する前にブラシを乾かしてください。

本体に欠けが生じるほど強く落とした場合や、ポートカバーがしっかり閉まらなくなった場合は、電動歯ブラシの防水性が保たれているとみなさず、水回りで再び使う前に点検を受けてください。

水回りで電動歯ブラシを使う際の注意点

防水性を保つ5つの習慣

1. Rinse, do not soak. Rinse the brush head after use. Rinse the handle only as allowed by its instructions, then remove excess water.
2. 立てて乾燥させる。カウンターに水がたまっている場所を避け、風通しのよいところに置きます。
3. 充電台を濡らさない。乾いた場所で充電し、拭き掃除の前に電源プラグを抜きます。
4. シール部を確認する。普段の清掃時に、ポートカバーやガスケットにひびがないか点検します。
5. 充電前に乾かす。電動歯ブラシを充電器に戻す前に、ハンドルとポート周辺を拭いてください。

The American Dental Association recommends rinsing a toothbrush after use and storing it upright to air-dry. For an electric handle, charging port and seals, follow the model’s care instructions as well. Read our guide to cleaning an electric toothbrush head for everyday care, or explore how electric toothbrushes work.

ブランド向け：IPX7防水が商品訴求になる理由

For OEM and private-label buyers, a documented IP rating makes water protection a clear product feature. Answer questions such as “are electric toothbrushes waterproof” and explain the model’s permitted uses on its product page. Support the claim with a test report that matches the handle and configuration you sell.

• 表示だけでなく試験を確認する。IPX7表示の根拠となるIEC 60529の試験レポートを確認し、品質管理の段階で検証してください。
• 商品ページに表示する。「IPX7防水」は、商品タイトルや特長一覧に使える簡潔な検索語です。
• Offer a suitable water-resistant travel case for travelers, with its own documented protection level.
• Match the feature to the customer. Explain water protection for travel and bathroom use. Promote shower use only for models whose instructions permit it.

The standard MOQ for customized products is 1,000 units, with flexibility depending on the order; wholesale orders for available stock start at 50 units. Prototype samples are ready in 3–7 days and mass production takes 25–35 days after sample approval. The factory is ISO 9001 and ISO 13485 certified and has FDA establishment registration. We can provide CE, RoHS, FCC and UKCA documentation as applicable to the model and target market, plus IPX8 test reports for models with that rating.

防水表示は、購入者が確認できる書類で裏付けます。IPX7浸水試験はGB 4208-2017の水深1 m、30分間の条件で実施します。当社の信頼性試験では9か月間に450を超える試験項目を記録し、浸水、塩水噴霧、落下、温湿度サイクル、完成品動作試験などを実施しています。音波式ハンドルは出荷前に37項目の工場検査を受け、各工程の密封確認は管理計画で定めます。対象機種の試験レポートはご要望に応じて提供し、等級と試験条件を確認いただけます。

カスタマイズの選択肢。防水性は固定機能ではなく、設定する仕様です。数量と金型が決まれば、等級、シール設計、充電インターフェース、関連書類を調整できます。下表は選択肢の一例であり、上限ではありません。

Relish Tech manufactures IPX7-tested electric toothbrushes for OEM/ODM and private-label brands, with sealed handles and supporting test documentation. Compare sonic and oscillating-rotating brushes before choosing your specifications.

よくある質問

防水に関する案内はIEC 60529規格に基づいてまとめています。お使いの機器固有の説明書に代わるものではありません。