US3668865A - Dial and movement fixing structure for a watchcase - Google Patents

Dial and movement fixing structure for a watchcase Download PDF

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Publication number
US3668865A
US3668865A US151021A US3668865DA US3668865A US 3668865 A US3668865 A US 3668865A US 151021 A US151021 A US 151021A US 3668865D A US3668865D A US 3668865DA US 3668865 A US3668865 A US 3668865A
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US
United States
Prior art keywords
dial
annular member
cylindrical portion
movement
periphery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US151021A
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English (en)
Inventor
Masahide Hirabayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3668865A publication Critical patent/US3668865A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/14—Fastening the dials to the clock or watch plates

Definitions

  • the annular member has surfaces which engage the lower face of the dial and the periphery of the dial. Furthermore, the dial has a projection at its periphery and the annular member has an opening which accepts the projection with minimum clearance; this combination prevents rotation of the dial with respect to the watchcase.
  • the watch movement fits in similar fashion into the lower portion of the annular member. The movement is retained against the lower portion of the annular member by an inwardly directed flange.
  • the annular member is sufficiently flexible so that the movement can be pressed into the lower portion of the annular member and held therein by snap action. If desired, the dial may be similarly held to the upper portion of the annular member.
  • an object of the present invention is a structure for holding fixed a dial in a watchcase against translational or rotational motion.
  • Another object is to hold fixed a watch movement in a watchcase against translational or rotational motion.
  • Still another object is to provide a structure for holding fixed a dial and a movement which is easy to assemble automatically, inexpensive and which permits that the dial be made of materials unsuitable for joining by conventional processes.
  • the invention accordingly comprises a product possessing the features, properties, and the relation of components which will be exemplified in the product hereinafter described, and the scope of the invention will be indicated in the claims.
  • FIG. I is a partial, sectional view in elevation of a watchcase of conventional construction
  • FIG. 2 is a plan view of a watch in accordance with the present invention with a portionof the watchcase superior to the dial removed and with a portion of the dial broken away;
  • FIG. 3 is a partial sectional view taken along line III-III of FIG. 2;
  • FIG. 4 is a partial, sectional view taken along the line IV- IV of FIG. 2;
  • FIG. 5 is a view in perspective of a section of an annular member which holds a dial in place
  • FIG. 6 is a partial, sectional view of an embodiment of the invention.
  • FIG. 7 is another embodiment of a section of the annulus which holds the dial and the movement in place.
  • a watch case having an outer ring 11 and a case-back 13 holds a movement 14 and a dial 15.
  • the dial I5 is prevented from rotation by means of legs 16 joined to the dial 15 by a technique such as soldering or welding.
  • the legs 16 are fixed by screws 17 to a ring 19 fitting tightly within the outer ring 11.
  • the dial 15 is prevented from moving toward the movement 14 by the guard ring 18.
  • the movement 14 is prevented from axial dislocation by the flange 14a between the rings 18 and 19.
  • the movement 14 is prevented from horizontal motion by means of the inner guard 18a.
  • Axial location of the structure within the watchcase is determined by the flange 18b of the guard ring 18.
  • legs be fastened to the dial restricts the range of materials of which the dial may be made.
  • the dials cannot be made of stone, ceramic or jewels because of the difficulty of affixing thereto legs.
  • legs could be joined to an aluminum dial by heliarc welding, deformation would occur with a dial of the customary thickness.
  • the dial 5 has a projection 5a at its periphery which fits within a notch 5b in a cylindrical portion 7 of an annular member 3.
  • the pro jection 5a and notch 5b combination prevents relative rotation between the dial 5 and the angular member 3.
  • the upper surface of the annular member 3 serves to locate the dial axially.
  • the annular member 3 is further provided with inwardly directed flange sections 3a which hold the movement 4 by snap action.
  • the movement 4 is fixed circumferentially to the annular member 3 by means of the projection 8 in the annular member 3 and the opening 8a in the movement 4. As is obvious, this relationship could be reversed with the projection being in the movement and the opening in the annular ring (not shown).
  • the dial is prevented from axial motion in the direction of the backcover 23 by means of the upper surface of the annular ring 3 which engages the inner surface of the dial 5. Motion in the opposite direction is prevented by the inwardly directed flange 9 on the case ring 1. Motion of the dial 5 in a direction transverse to the axis of the watch is prevented by the inner surface of the upwardly extending cylindrical portion 7 which is connected through the base 6 to the remainder of the annular member 3.
  • the watch movement is held axially against the lower surface of the annular member 3 by an inwardly projecting flange segment 3a. Insertion of the movement 4 into the annular member 3 is facilitated by the presence of a sloping surface 3c on the flange 3a.
  • the downwardly projecting cylindrical member 3b preferably is not a complete cylinder but is segmented. As indicated by the dotted lines in FIG. 2, four relatively narrow segments are adequate to hold the dial 5. The shape of these segments can also be seen in FIG. 5.
  • the dial may also be held within the annular member 3 by means of snap action.
  • the upward-extending cylindrical portion 7 is fitted proximate its upper end with an inwardly extending flange 7a.
  • the flange 7a has the diagonal guide surface 7b (FIGS. 6 and 7).
  • the flange 7a it is not necessary that the flange 7a extend around the complete interior of the cylinder 7. Instead, only three or four short segments of the cylinder 7 need be so equipped. This can beseen in FIG. 7 where only a short portion of the member 7 is equipped with the flange 7a. As would be expected the number of such segments should be at least three.
  • the annular member 3 should be composed of a flexible material, preferably a flexible plastic.
  • the flexibility of the member is enhanced by providing the groove 21 between the upwardly extending portions of the annular member 3.
  • the flexibility is further enhanced by segmenting the cylinder 7.
  • a dial-fixing structure comprising a dial having an essentially circular periphery and a projection at said periphery, and a flexible, annular member comprising an upwardly directed first surface transverse to the axis of said member for engaging one face of said dial, and an essentially cylindrical, upwardly projecting portion surrounding said first surface, said cylindrical portion having an inner surface for engaging said periphery of said dial and having an opening therein for receiving said projection with minimum clearance, said annular member thereby providing for fixing said dial against movement radially, circumferentially and in one of the two axial directions.
  • annular member has therein a groove between said first surface and said cylindrical portion, thereby imparting additional flexibility to said cylindrical portion.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Adornments (AREA)
US151021A 1970-06-09 1971-06-08 Dial and movement fixing structure for a watchcase Expired - Lifetime US3668865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45049118A JPS5031022B1 (enrdf_load_stackoverflow) 1970-06-09 1970-06-09

Publications (1)

Publication Number Publication Date
US3668865A true US3668865A (en) 1972-06-13

Family

ID=12822132

Family Applications (1)

Application Number Title Priority Date Filing Date
US151021A Expired - Lifetime US3668865A (en) 1970-06-09 1971-06-08 Dial and movement fixing structure for a watchcase

Country Status (5)

Country Link
US (1) US3668865A (enrdf_load_stackoverflow)
JP (1) JPS5031022B1 (enrdf_load_stackoverflow)
CH (2) CH558036A (enrdf_load_stackoverflow)
GB (1) GB1325951A (enrdf_load_stackoverflow)
MY (1) MY7600220A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150538A (en) * 1977-11-08 1979-04-24 Citizen Watch Company Limited Dial attaching device for watch
US4184317A (en) * 1976-12-27 1980-01-22 Citizen Watch Co., Ltd. Watch movement mounting structure
US4207735A (en) * 1977-09-19 1980-06-17 Citizen Watch Co., Ltd. Dial and movement fixing structure
US4924452A (en) * 1987-09-03 1990-05-08 Eta Sa Fabriques D'ebauches Watch provided with a dial
US20110228645A1 (en) * 2010-03-17 2011-09-22 Haruki Hiranuma Timepiece
CN102339010A (zh) * 2010-07-28 2012-02-01 深圳市飞亚达科技发展有限公司 一种手表
RU2525319C2 (ru) * 2009-07-14 2014-08-10 Эта Са Мануфактюр Орложэр Сюис Устройство для стопорения часового механизма
US20220121155A1 (en) * 2020-10-16 2022-04-21 The Swatch Group Research And Development Ltd Device for locking a timepiece movement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH347773A (fr) * 1958-07-03 1960-07-15 Villard Gilbert Montre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141004Y2 (enrdf_load_stackoverflow) * 1973-06-12 1976-10-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH347773A (fr) * 1958-07-03 1960-07-15 Villard Gilbert Montre

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184317A (en) * 1976-12-27 1980-01-22 Citizen Watch Co., Ltd. Watch movement mounting structure
US4207735A (en) * 1977-09-19 1980-06-17 Citizen Watch Co., Ltd. Dial and movement fixing structure
US4150538A (en) * 1977-11-08 1979-04-24 Citizen Watch Company Limited Dial attaching device for watch
US4924452A (en) * 1987-09-03 1990-05-08 Eta Sa Fabriques D'ebauches Watch provided with a dial
RU2525319C2 (ru) * 2009-07-14 2014-08-10 Эта Са Мануфактюр Орложэр Сюис Устройство для стопорения часового механизма
US20110228645A1 (en) * 2010-03-17 2011-09-22 Haruki Hiranuma Timepiece
US8325565B2 (en) * 2010-03-17 2012-12-04 Seiko Instruments Inc. Timepiece
CN102339010A (zh) * 2010-07-28 2012-02-01 深圳市飞亚达科技发展有限公司 一种手表
CN102339010B (zh) * 2010-07-28 2013-06-05 深圳市飞亚达科技发展有限公司 一种手表
US20220121155A1 (en) * 2020-10-16 2022-04-21 The Swatch Group Research And Development Ltd Device for locking a timepiece movement
CN114384782A (zh) * 2020-10-16 2022-04-22 斯沃奇集团研究及开发有限公司 用于锁定时计机芯的装置
US11960244B2 (en) * 2020-10-16 2024-04-16 The Swatch Group Research And Development Ltd Device for locking a timepiece movement

Also Published As

Publication number Publication date
CH558036A (enrdf_load_stackoverflow) 1975-01-15
CH837671A4 (enrdf_load_stackoverflow) 1974-06-14
GB1325951A (en) 1973-08-08
MY7600220A (en) 1976-12-31
JPS5031022B1 (enrdf_load_stackoverflow) 1975-10-06

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