EP1602990A2 - Connection structure for a watchcase with a watch chain - Google Patents

Connection structure for a watchcase with a watch chain Download PDF

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Publication number
EP1602990A2
EP1602990A2 EP20050008127 EP05008127A EP1602990A2 EP 1602990 A2 EP1602990 A2 EP 1602990A2 EP 20050008127 EP20050008127 EP 20050008127 EP 05008127 A EP05008127 A EP 05008127A EP 1602990 A2 EP1602990 A2 EP 1602990A2
Authority
EP
European Patent Office
Prior art keywords
watchcase
watch chain
groove
connection structure
flange
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.)
Withdrawn
Application number
EP20050008127
Other languages
German (de)
French (fr)
Inventor
Kai Cheung Ho
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.)
Modern Nature Ltd
Original Assignee
Modern Nature Ltd
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 Modern Nature Ltd filed Critical Modern Nature Ltd
Publication of EP1602990A2 publication Critical patent/EP1602990A2/en
Withdrawn legal-status Critical Current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
    • G04B37/00—Cases
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • G04B37/1486—Arrangements for fixing to a bracelet

Definitions

  • the present invention relates to a connection structure for a watch, particularly to a structure connecting a watchcase with a watch chain.
  • connection bars In such conventional construction, two pairs of lugs are disposed on both sides of the watchcase, each pair having a pair of cylindrical cavities or holes therein accommodating two ends of the bar.
  • the connection bar may be a spring pin, comprising a cylindrical tube containing a compression spring, and two cylindrical mandrels disposed in the tube and spaced by the spring. The mandrels are inserted into the cavities or holes in the lugs to connect the watchcase with the watch chain.
  • the detaching operation for the watchcase and the watch chain must be performed with the aid of special tools, which may bring inconvenience to the user. No one wants to often go to a watch shop for replacing the watch chain every time. If the user replaces it with own tools, unsuitable tools may risk damaging the connection structure of the watchcase and watch chain, or untight attachment between them, which may lead to detachment and losing the watch.
  • the pin is inserted between the lugs by pushing the mandrels into the tube when being used to connect the watch chain with the watchcase. Then, the mandrels are urged into the cavities or holes when they are registered with each other. But the mandrels cannot be fixed in the axis direction. Therefore, the conventional connection structure does not meet the requirement.
  • the present invention relates to a connection structure for a watch, through which the watchcase can be connected with the watch chain quickly and tightly without any special tool.
  • the present invention provides a connection structure for a watchcase and a watch chain, comprising a through groove on each side of the watchcase longitudinally, a through hole vertical to a side edge of the groove, a flange disposed on each side of the watch chain and engaged with the groove for connecting with the watchcase, a slot in the flange at a position corresponding to the through hole, in which a locking device is provided.
  • the groove may have a half-circular section, the width between two side edges of which is smaller than the diameter of the circle, and the shape of the flange of the watch chain matches with that of the groove.
  • the groove may have a wedged section, and the shape of the flange of the watch chain matches with that of the groove.
  • the groove may have a T-shaped section, and the shape of the flange of the watch chain matches with that of the groove.
  • the through hole may be cylindrical or prismatic, and the shape of the slot of the flange matches with that of the through hole.
  • the locking device may comprise a catapult nail in the through hole and an elastic element in the slot.
  • the advantage of the present invention is obvious.
  • the watchcase can be attached with and detached from the watch chain quickly through the connection structure without any special tool. It brings more convenience to the user.
  • the present invention relates to a connection structure for a watchcase and a watch chain, as shown in Figs. 1, 2 and 3.
  • the watchcase comprises a through groove 11 on each side longitudinally and a through hole 12 vertical to a side edge of the groove 11.
  • the watch chain comprise a flange 21 on each side engaging with the groove 11 for connecting with the watchcase, a slot 22 in the flange 21 at a position corresponding to the through hole 12, in which a locking device is provided.
  • the locking device comprises a catapult nail 13 in the through hole 12 and an elastic element 23 in the slot 22.
  • the watch chain and the watchcase are connected with each other by the above-mentioned connection system.
  • the section of the groove 12 has a half circular shape, the width between two side edges of which is smaller than the diameter of the circle.
  • the shape of the flange of the watch chain matches with that of the groove.
  • the flange of the watch chain is inserted into the groove longitudinally and slides along it till the elastic element 23 of the watch chain is stopped and contacts against the catapult nail 13 to form a locking system.
  • the elastic element 23 may be a spring. Any conventional construction may be used to form the elastic element 23 and the catapult nail 13 or any conventional structure performing the same function could be employed to replace such locking device.
  • any article with a tip such as a ball pen, may be used to push the catapult nail 13 in the through hole 12 to urge the elastic element 13 to a compressed state. Then, the flange 21 could be pulled out and the detachment is completed.
  • the flange 21 of the watch chain is inserted into the groove directly in a longitudinal direction and slides along it till the elastic element 23 contacts with the catapult nail 13 under the resilience force to fasten the watchcase and the watch chain together. Then, the tight attachment of the watch chain and the watchcase is completed.
  • the groove 11 has a wedged or T-shaped section.
  • the shape of the flange 21 of the watch chain matches with that of the groove 11.
  • Other parts of the connection structure are same as those of the above-mentioned structure and the description is omitted.
  • the through hole 12 of the groove 11 of the present invention may be disposed in the inner side or the outer side of the watchcase.
  • the through hole 12 may be cylindrical or prismatic for matching with catapult nails with different shapes or other similar locking component.
  • the slot 22 of the flange 21 and the elastic element 23 respectively have a shape corresponding to the through hole 12.
  • the watchcase and the watch chain are connected tightly and can be detached easily.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

A connection structure for a watchcase and a watch chain comprises a through groove on each side of the watchcase longitudinally, a through hole vertical to a side edge of the groove, a flange disposed on each side of the watch chain and engaged with the groove for connecting with the watchcase, a slot in the flange at a position corresponding to the through hole, in which a locking device is provided. The watchcase can be attached with and detached from the watch chain quickly through the connection structure without any special tool.

Description

Field of the Invention
The present invention relates to a connection structure for a watch, particularly to a structure connecting a watchcase with a watch chain.
Background of the invention
At present, watches are widely used in our ordinary lives. A watch is becoming a necessary ornament rather than a timepiece. No one content to wear one watch during his whole life. For most people, they want to change the watch chain at will. However, the watchcase is commonly connected with the watch chain by connection bars. In such conventional construction, two pairs of lugs are disposed on both sides of the watchcase, each pair having a pair of cylindrical cavities or holes therein accommodating two ends of the bar. The connection bar may be a spring pin, comprising a cylindrical tube containing a compression spring, and two cylindrical mandrels disposed in the tube and spaced by the spring. The mandrels are inserted into the cavities or holes in the lugs to connect the watchcase with the watch chain. However, the detaching operation for the watchcase and the watch chain must be performed with the aid of special tools, which may bring inconvenience to the user. No one wants to often go to a watch shop for replacing the watch chain every time. If the user replaces it with own tools, unsuitable tools may risk damaging the connection structure of the watchcase and watch chain, or untight attachment between them, which may lead to detachment and losing the watch. The pin is inserted between the lugs by pushing the mandrels into the tube when being used to connect the watch chain with the watchcase. Then, the mandrels are urged into the cavities or holes when they are registered with each other. But the mandrels cannot be fixed in the axis direction. Therefore, the conventional connection structure does not meet the requirement.
Summary of the Invention
The present invention relates to a connection structure for a watch, through which the watchcase can be connected with the watch chain quickly and tightly without any special tool.
To achieve the above object, the present invention provides a connection structure for a watchcase and a watch chain, comprising a through groove on each side of the watchcase longitudinally, a through hole vertical to a side edge of the groove, a flange disposed on each side of the watch chain and engaged with the groove for connecting with the watchcase, a slot in the flange at a position corresponding to the through hole, in which a locking device is provided.
The groove may have a half-circular section, the width between two side edges of which is smaller than the diameter of the circle, and the shape of the flange of the watch chain matches with that of the groove.
The groove may have a wedged section, and the shape of the flange of the watch chain matches with that of the groove.
The groove may have a T-shaped section, and the shape of the flange of the watch chain matches with that of the groove.
The through hole may be cylindrical or prismatic, and the shape of the slot of the flange matches with that of the through hole.
The locking device may comprise a catapult nail in the through hole and an elastic element in the slot.
The advantage of the present invention is obvious. The watchcase can be attached with and detached from the watch chain quickly through the connection structure without any special tool. It brings more convenience to the user.
Brief Description of the Drawing
  • Fig. 1 includes an illustration view and a partial section view of the connection structure according to an embodiment of the present invention;
  • Fig. 2 is a view illustrating the connection structure according to an embodiment of the present invention in a detachment condition;
  • Fig. 3 is a view illustrating the connection structure according to an embodiment of the present invention in an attachment condition;
  • Fig. 4 is a view illustrating the connection structure according to another embodiment of the present invention;
  • Fig. 5 is a view illustrating the connection structure according to a further embodiment of the present invention;
    • Detailed description of the preferred embodiment
    The present invention relates to a connection structure for a watchcase and a watch chain, as shown in Figs. 1, 2 and 3. The watchcase comprises a through groove 11 on each side longitudinally and a through hole 12 vertical to a side edge of the groove 11. The watch chain comprise a flange 21 on each side engaging with the groove 11 for connecting with the watchcase, a slot 22 in the flange 21 at a position corresponding to the through hole 12, in which a locking device is provided. The locking device comprises a catapult nail 13 in the through hole 12 and an elastic element 23 in the slot 22. The watch chain and the watchcase are connected with each other by the above-mentioned connection system.
    In an embodiment shown in Figs. 1, 2 and 3, the section of the groove 12 has a half circular shape, the width between two side edges of which is smaller than the diameter of the circle. The shape of the flange of the watch chain matches with that of the groove. In use, the flange of the watch chain is inserted into the groove longitudinally and slides along it till the elastic element 23 of the watch chain is stopped and contacts against the catapult nail 13 to form a locking system. The elastic element 23 may be a spring. Any conventional construction may be used to form the elastic element 23 and the catapult nail 13 or any conventional structure performing the same function could be employed to replace such locking device. When the user replaces the chain, instead of special tools, any article with a tip, such as a ball pen, may be used to push the catapult nail 13 in the through hole 12 to urge the elastic element 13 to a compressed state. Then, the flange 21 could be pulled out and the detachment is completed. For assembling the watch chain and the watchcase, the flange 21 of the watch chain is inserted into the groove directly in a longitudinal direction and slides along it till the elastic element 23 contacts with the catapult nail 13 under the resilience force to fasten the watchcase and the watch chain together. Then, the tight attachment of the watch chain and the watchcase is completed.
    As shown in Figs. 4 and 5, the groove 11 has a wedged or T-shaped section. The shape of the flange 21 of the watch chain matches with that of the groove 11. Other parts of the connection structure are same as those of the above-mentioned structure and the description is omitted.
    The through hole 12 of the groove 11 of the present invention may be disposed in the inner side or the outer side of the watchcase. The through hole 12 may be cylindrical or prismatic for matching with catapult nails with different shapes or other similar locking component. The slot 22 of the flange 21 and the elastic element 23 respectively have a shape corresponding to the through hole 12.
    Through the above-mentioned connection structure of the present invention, the watchcase and the watch chain are connected tightly and can be detached easily.

    Claims (6)

    1. A connection structure for a watchcase and a watch chain, characterized in that it comprises a through groove on each side of the watchcase longitudinally, a through hole vertical to a side edge of the groove, a flange disposed on each side of the watch chain and engaged with the groove for connecting with the watchcase, a slot in the flange at a position corresponding to the through hole, in which a locking device is provided.
    2. A connection structure for a watchcase and a watch chain as claimed in claim 1, characterized in that the groove has a half-circular section, the width between two side edges of which is smaller than the diameter of the circle, and the shape of the flange of the watch chain matches with that of the groove.
    3. A connection structure for a watchcase and a watch chain as claimed in claim 1, characterized in that the groove has a wedged section, and the shape of the flange of the watch chain matches with that of the groove.
    4. A connection structure for a watchcase and a watch chain as claimed in claim 1, characterized in that the groove has a T-shaped section, and the shape of the flange of the watch chain matches with that of the groove.
    5. A connection structure for a watchcase and a watch chain as claimed in claim 1, characterized in that the through hole is cylindrical or prismatic, and the shape of the slot of the flange matches with that of the through hole.
    6. A connection structure for a watchcase and a watch chain as claimed in claim 1, characterized in that the locking device comprises a catapult nail in the through hole and an elastic element in the slot.
    EP20050008127 2004-05-28 2005-04-14 Connection structure for a watchcase with a watch chain Withdrawn EP1602990A2 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    CN200420592519U 2004-05-28
    CN200420592519 2004-05-28

    Publications (1)

    Publication Number Publication Date
    EP1602990A2 true EP1602990A2 (en) 2005-12-07

    Family

    ID=35045057

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP20050008127 Withdrawn EP1602990A2 (en) 2004-05-28 2005-04-14 Connection structure for a watchcase with a watch chain

    Country Status (1)

    Country Link
    EP (1) EP1602990A2 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN112006387A (en) * 2020-08-31 2020-12-01 温州职业技术学院 Intelligent wearable device convenient for dismounting belt body
    US11357293B2 (en) * 2019-06-25 2022-06-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Wearable devices, watchband and connector

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US11357293B2 (en) * 2019-06-25 2022-06-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Wearable devices, watchband and connector
    CN112006387A (en) * 2020-08-31 2020-12-01 温州职业技术学院 Intelligent wearable device convenient for dismounting belt body
    CN112006387B (en) * 2020-08-31 2023-04-14 温州职业技术学院 Intelligent wearable device convenient to disassemble belt body

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