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GB/T 34839-2017 English PDF

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GB/T 34839-2017: Timekeeping instruments -- Designs and dimensions of crowns and sealed tubes
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PDF similar to GB/T 34839-2017


Standard similar to GB/T 34839-2017

GB/T 38023   GB/T 30106   QB/T 4055.2   GB 44702   GB/T 34837   

Basic data

Standard ID GB/T 34839-2017 (GB/T34839-2017)
Description (Translated English) Timekeeping instruments -- Designs and dimensions of crowns and sealed tubes
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y11
Classification of International Standard 39.040.01
Word Count Estimation 8,881
Date of Issue 2017-11-01
Date of Implementation 2018-05-01
Regulation (derived from) National Standard Announcement 2017 No. 29
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34839-2017: Timekeeping instruments -- Designs and dimensions of crowns and sealed tubes

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Timekeeping instruments-Designs and dimensions of crowns and sealed tubes ICS 39.040.01 Y11 National Standards of People's Republic of China Timepiece head and gland design and dimensions (ISO 10552.2014, Timekeeping devices-Crowns and sealed tubes- Designsanddimensions, IDT) Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method identical with ISO 10552.2014 "timing instrument head and sealing tube design and size." The documents of our country that are consistent with the corresponding international documents that are normative references in this standard are as follows. --- GB/T 1800.1-2009 Geometrical Product Specifications (GPS) Limits and Fits Part 1. Tolerances, deviations and combinations Basic (ISO 286-1.1988, MOD) --- GB/T 9820.2-2008 Timing terms - Part 2. Technical and commercial definitions (ISO 6426-2.2002, IDT) --- GB/T 30106-2013 Watch waterproof watch (ISO 22810.2010, IDT) This standard made the following editorial changes. --- Modify the standard name. This standard proposed by the China Light Industry Federation. This standard by the National Clock Standardization Technical Committee (SAC/TC160) centralized. This standard was drafted. Light Industry Institute of watches and clocks, Zhuhai Rossini Table Co., Ltd., Zhangzhou Hengli Electronics Co., Ltd., Shenzhen FIYTA Precision Timing Manufacturing Co., Ltd., Shishi City, Xin Jia Electronics Co., Ltd., King Electronics (Shenzhen) Co., Ltd., Shenzhen Lang Langxingke Electronic Co., Ltd. The main drafters of this standard. Jin Ying Shu, Guo Xingang, Zhang Lijuan, Song Pengtao, Shao Yue Ming, Lan Liping, Tang Haiyuan, Liu Shengyong, Li Ping, Liu Zhong, Li Yuzhong, Zhang Kelai, Shi Fangzong, Wang Shitong. Timepiece head and gland design and dimensions

1 Scope

This standard specifies the design and size of crown and seal tube and its tolerances. This standard applies to a waterproof design of the mechanical, electrical machinery and electronic watches crown and sealed tube.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. ISO 286-1 Geometrical Product Specifications (GPS) - ISO Specification System for Linear Dimensional Tolerances - Part 1. Basic Tolerances, Partial Differences and Ratings [Geometricalproductspecifications (GPS) -ISO codesystemfortolerancesonlinearsizes- Part 1.Basisoftolerances, deviationsandfits] ISO 6426-2 Timing terms - Part 2. Technical and commercial definitions (Horologicalvocabulary-Part 2.Tech- nicalandcommercialdefinitions) ISO 22810 watch waterproof watch (Horology-Water-resistantwatches)

3 Terms and definitions

ISO 6426-2 defines the terms and definitions apply to this document.

4 symbol

4.1 handle head D1 --- crown diameter (1,2 and 3 type); D2 --- thread diameter (1,2 and 3 type); D3 --- handle head hub diameter (1,2 and 3 type); D4 --- with the sealing tube handle countersunk hole diameter (1,2 and 3 type); C --- knurled surface height (1,2 and 3 type); F1 --- crown protruding head length (type 1 and type 3); F2 --- handle head recess depth (2 type); F3 --- handle head hub slot size (3 type); H --- crown height (1,2 and 3 type); P1 --- with the sealed tube handle countersunk hole depth (1,2 and 3 type); P2 --- internal thread should be at least 3 pitch (1,2 and 3 type). 4.2 sealed tube d1 --- with the diameter (type 1) or head diameter (2,3 and 4 type); d2 --- stem diameter (type 3);

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