IEC 631 74:2021 pdf download – Electrically operated toothbrushes – Methods for measuring the performance.
1 Scope This document applies to electrically operated toothbrushes used for electric cleaning of teeth. Rechargeable toothbrushes and primary battery operated toothbrushes, both for adults and children, are within the scope of this document. This document describes the test methods for measurement of the performance parameters as listed in Clause 4. The purpose of this document is only to specify the measurement method; it does not define any limit values. NOTE The electrically operated toothbrushes are classified as follows: Classification with regard to supply modes: – primary battery operated toothbrush; – rechargeable toothbrush: • wireless rechargeable toothbrush; • corded rechargeable toothbrush. Classification with regard to operating modes: – rotary electrically operated toothbrush; – reciprocating electrically operated toothbrush: • linear reciprocating electrically operated toothbrush; • rotational reciprocating electrically operated toothbrush; – vibratory electrically operated toothbrush. The different types are explained for information only, since the tests to be carried out are identical, except for primary battery operated toothbrushes and rechargeable toothbrushes. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62301 , Household electrical appliances – Measurement of standby power
3.1 electrically operated toothbrush hand-held electrically operated appliance, the brush head of which carries filaments, used primarily for cleaning surfaces within the oral cavity by means of a reciprocating, rotating, or vibrating brush 3.2 rechargeable toothbrush electrically operated toothbrush powered by incorporated rechargeable batteries 3.3 wireless rechargeable toothbrush rechargeable toothbrush that is charged with a wireless charging device (electro-magnetic induction) 3.4 corded rechargeable toothbrush rechargeable toothbrush that is charged by connecting a charging device to a connector 3.5 primary battery operated toothbrush electrically operated toothbrush deriving its energy solely from non-rechargeable batteries 3.6 head end part of electrically operated toothbrush with a non-detachable or detachable brush 3.7 rotary electrically operated toothbrush electrically operated toothbrush fitted with a round brush head acting in a rotating motion Note 1 to entry: The direction of rotation can oscillate during the cycle.
5.1.2 Samples shall be tested under the operational conditions specified in the instructions for use. 5.1.3 The power supply used for the tests shall be the same as that specified for the electrically operated toothbrush. If the electrically operated toothbrush is provided with more than one power supply, it shall be tested with the one that gives the most unfavorable results. 5.2 Preparation of the test sample For rechargeable toothbrushes, the sample is fully charged and discharged two times before subjecting it to the tests from 5.3 to 5.1 1 . 5.3 Weight of electrically operated toothbrush The hand-held part of the sample is weighed with scales and the weight is recorded in g. 5.4 Measurement of vibration frequency The rechargeable toothbrush is fully charged. The primary battery operated toothbrush is supplied from an external DC supply with the voltage equal to the battery’s rated voltage, as specified in the instructions for use. The toothbrush shall run under no-load condition for 1 min. The vibration frequency is measured by a stroboscope. The recorded value for vibration frequency shall be the average value of three consecutive measurements.
5.9 Mechanical endurance 5.9.1 Preparation of the drop test 5.9.1 .1 Prior to the drop test, the appearance and the normal operation of the sample is checked. The sample shall be complete, in good order, and in normal starting-up, charging and motor rotation. Inspection is carried out in accordance with 5.9.1 .2 to 5.9.1 .4. The inspection result shall be recorded in Table 1 to Table 4. NOTE Pictures can be used to show the state of the sample. 5.9.1 .2 Appearance and start-up operation are inspected visually. 5.9.1 .3 For inspection of the running motor, the vibration rate and speed are measured in accordance with the method specified in 5.4 and 5.5, respectively. 5.9.1 .4 For inspection of the charging function, the charging current is measured by the following method. a) For the corded rechargeable toothbrush The toothbrush is discharged completely. The toothbrush is connected to the charging connector of the charging device. The charging device is plugged to the supply mains and charging begins. After 5 min, a reading of the current is taken. The measuring diagram is as shown in Figure 1 a. b) For the wireless rechargeable toothbrush The toothbrush is discharged completely. The toothbrush is placed on the charging base of the charging device. The charging device is plugged to the supply mains and charging begins. After 5 min, a reading of the current is taken. The measuring diagram is as shown in Figure 1 b.