EP1513222A1 - Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements - Google Patents

Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements Download PDF

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Publication number
EP1513222A1
EP1513222A1 EP04019954A EP04019954A EP1513222A1 EP 1513222 A1 EP1513222 A1 EP 1513222A1 EP 04019954 A EP04019954 A EP 04019954A EP 04019954 A EP04019954 A EP 04019954A EP 1513222 A1 EP1513222 A1 EP 1513222A1
Authority
EP
European Patent Office
Prior art keywords
flange
cavity
housing
side wall
bracelet
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.)
Granted
Application number
EP04019954A
Other languages
English (en)
French (fr)
Other versions
EP1513222B1 (de
Inventor
Fabien Henriet
Pierre-André Noirjean
Francois Simond
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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
Priority claimed from EP03020024A external-priority patent/EP1513221A1/de
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP20040019954 priority Critical patent/EP1513222B1/de
Publication of EP1513222A1 publication Critical patent/EP1513222A1/de
Application granted granted Critical
Publication of EP1513222B1 publication Critical patent/EP1513222B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/06—Electric connectors, e.g. conductive elastomers
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/04—Input or output devices integrated in time-pieces using radio waves
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/04—Antennas attached to or integrated in watch bracelets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals

Definitions

  • the present invention relates to a portable object with a bracelet provided with means electrical connection through the housing.
  • the portable object essentially comprises the housing in which is disposed at least one electronic circuit, an attached bracelet to the housing, and the electrical connection means for electrically connecting at least a conductive track of the bracelet to at least one contact terminal of the circuit electronic.
  • the present invention also relates to an electrical contact flange for a portable bracelet object.
  • the present invention also relates to a mounting method in particular the electrical contact flange for a portable object bracelet.
  • the term "means of connection” any conductor or set of conductors to ensure electrical connection between at least one contact terminal of an electronic circuit and at less a conductive track disposed in the bracelet.
  • This conductive track can be an antenna for transmitting and receiving signals or to connect electrically an electrical component contained in the bracelet and the circuit electronic in the case.
  • the portable object is made in the form a portable electronic instrument in the form of a wristwatch.
  • This wristwatch may comprise receiving means or radiofrequency-type signals if the conductive track of the bracelet defines an antenna.
  • the electronic signal processing circuit electrical devices makes it possible to manage the transmission or reception of information signals by the antenna.
  • European Patent No. 0 631 341 describes an electronic instrument of the type wristwatch having an antenna housed in the bracelet and connected to a electronic circuit for processing the signals received by the antenna.
  • the circuit electronic processing is arranged inside the housing of the instrument on a printed circuit board.
  • Connection pads are provided on a region peripheral of the printed circuit board to allow the establishment of a electrical connection between the electronic signal processing circuit and the connection terminals of the antenna which passes through a side wall of the housing.
  • fastening screws pass through adapted openings antenna terminals to be screwed directly into the circuit board printed at the connection pads to ensure the electrical connection.
  • a connector of the leaf spring type fixed to the printed circuit board for each terminal of the antenna, on which comes to rest an electrical conductor connected to one of the terminals of the antenna.
  • Each conductor connected to an antenna terminal must cross the wall side to support the spring blade to establish electrical contact.
  • a seal annular sealing is provided around said conductor in the passage through the side wall,
  • a disadvantage of the electronic instrument presented in the European patent No. 0 631 341 is that part of the antenna must pass through a side wall of the housing in order to be directly connected to the printed circuit board. Thereby, sealing at the side wall of the housing, even with the annular seal, is not guaranteed in time and according to the handling of the bracelet.
  • Another disadvantage of the first embodiment with fixing screws is that a subsequent replacement of the antenna in case of problem makes it essential a complete disassembly of the housing of the instrument, before being able to access the screws of fixation, which can make this operation tedious.
  • US Pat. No. 5,168,281 which describes a device for antenna connection for electronic equipment, such as a wristwatch.
  • An antenna end housed in a strand of the bracelet is fixed jointly to a electrical conductor.
  • This conductor passes through a side wall of the housing in order to come connect a contact blade of a circuit board carrying a circuit electronic.
  • An annular seal is provided around the driver in the passage to through the side wall.
  • the main purpose of the invention is thus to overcome the disadvantages of the art prior to supplying a portable bracelet object provided with connection means through a side wall of the housing in a sealed manner without being disturbed in particular by various manipulations of the bracelet.
  • the invention relates to a portable object cited above which is characterized in that the electrical connection means comprise at least one electrical contact flange fixed through a side wall of the housing, a first part of the flange in the housing being electrically connected to the electronic circuit and a second portion of the flange on the outside of the housing being electrically connected to the conductive track of the bracelet, in that the side wall comprises a cavity between first and second portions of the side wall, a passage opening of the flange being made in each side wall portion, and that a material seal is placed in the cavity between the two wall portions to secure a intermediate part of the flange and seal off each opening of the portions wall.
  • An advantage of the wearable bracelet object according to the invention lies in the fact that the intermediate part of each flange is fixed by a sealing material introduced into a cavity formed between a first and a second portion of the side wall.
  • the sealing material completely surrounds the flange in the cavity which may be a metal blade, and closes the passage openings of said flange.
  • This sealing material is different from the insulating material used for the wall lateral.
  • the sealing of said flange through the side wall is because the properties of the sealing material do not change during time in the same way as the side wall. He could of course have been imagined to overmould directly the contact flange in the side wall in hard plastic, but sealing problems would occur in the long run especially with a flange in the form of a metal blade.
  • the sealing material is a polymerizable adhesive or silicone that solidifies at room temperature for a period of time that can be around 24 hours.
  • the first part of the metal flange inside the housing is advantageously in the form of S to form a compression spring.
  • a printed circuit board carrying the circuit electronics compresses the first part of the flange at a contact pad of said plate. A better electrical contact is thus ensured, because the first part of the compressed flange exerts a contact force against the contact pad of said plate.
  • the second part of the metal flange in the form of a blade is arranged above from an upper surface of a mounting flange of the wrist strap to the rest, that is to say before the electrical connection to the conductive track of the bracelet.
  • This second part comprises a hole adapted to the passage of a metal screw of connection that is screwed into a hole in the rim.
  • the end of the track conductive also comprises a hole adapted to the passage of a metal screw.
  • each hole in the plastic edge may not include initial tapping, the latter being performed for the first time simply by screwing of the connection screw.
  • the portable object is a wristwatch presenting means of communication using waves radio frequencies. It is therefore expected to house an antenna in the bracelet, which is constituted by the conductive track. This antenna is connected to at least one circuit electronic processing of information signals received or transmitted by the antenna.
  • a good seal is ensured to connect the antenna to the electronic processing circuit while presenting a good behavior in time.
  • Another object of the invention is to provide a contact flange for means of electrical connection of a portable object to overcome the disadvantages of art earlier cited above.
  • the invention relates to a contact flange which is characterized in that that a first part of the flange has a S shape constituting a spring in order to can be compressed to establish an electrical connection with a contact pad of a printed circuit board, and that an intermediate part and a second part of the flange have a blade shape.
  • the specific tool for filling the cavity of the material of sealing is guided by guiding means provided in each portion of side wall up to a determined distance from the bottom of the cavity, but below each flange passing through said cavity.
  • guiding means provided in each portion of side wall up to a determined distance from the bottom of the cavity, but below each flange passing through said cavity.
  • FIG. 1a shows a schematic sectional view of the wristwatch 1 as a portable object.
  • This wristwatch 1 comprises a housing having a upper part or middle part 3 and a lower part or bottom 2, a bracelet provided with two strands 4 and 5 attached to the housing, and at least one button or crown of command not shown.
  • the upper 3 and lower 2 parts are assembled one on the other in the closed position of the housing with one of the ends of each strand 4 and 5 by conventional fastening means not shown in FIG. Figure 1a.
  • Said ends of the strands 4 and 5 are wedged between the bottom 2 and the middle part 3.
  • An annular seal 17 is placed in an annular groove of the middle part to come into contact with an upper edge of a side wall 15 of the bottom 2 in order to to ensure the tightness of the closed housing.
  • This housing is further closed on the top by an ice cream 13 of conventional type and made for example of plastic or sapphire according to the desired level of range.
  • a battery or accumulator 14 in a housing of the bottom 2 of the housing, a printed circuit board 10 on which is mounted at least one electronic circuit 11 powered by the battery or the accumulator, and an LCD liquid crystal device 12 to display in particular hourly, textual or other information.
  • the display device 12 is controlled by the electronic circuit 11.
  • Electrical conduction tracks not shown are arranged on the printed circuit board to connect electrically including electrical contact pads 30 disposed at the periphery of said plate to terminals of the electronic circuit 11.
  • An intermediate spacing element 32 is disposed between the LCD device 12 and the printed circuit board 10 to ensure a sufficient height between these two elements and allow the arrangement of components, such as the circuit electronics 11 shown in the intermediate space thus defined.
  • the wristwatch also comprises means of electrical connection which comprise in particular electrical contact flanges 8, which are in this embodiment in number of 4 as shown in particular in Figure 1b.
  • these flanges 8 are intended to contact electrically the contact pads 30 on the printed circuit board 10 with ends of at least one conductive track 6 and 7 disposed in each strand 4 and 5 of the bracelet.
  • the conductive track 6 and 7 of each strand defines a antenna for transmitting and receiving information in cooperation with the circuit electronic.
  • the electronic circuit 11, which is placed inside the watch case 1, includes an information processing unit.
  • the side wall 15 comprises two cavities 26 made from an upper edge of said wall in a vertical direction to define a bottom, a first inner portion 27 and a second outer portion 28 of the wall 15. These cavities are disposed in the side wall 15 in opposition diametrically, and located at the connection of each end of the strands 4 and 5 of the bracelet to the case.
  • Two pairs of contact flanges 8 which are placed parallel to one another, pass through openings of two wall portions 27 and 28 of the two cavities 26 of the side wall 15 of the bottom 2.
  • the intermediate portion of each pair of flanges 8 is secured by a sealing material 9 not shown in Figure 1b, which is introduced in each cavity 26 as described below with particular reference to Figures 3a and 3b.
  • the sealing material is preferably a polymerizable adhesive or silicone.
  • This sealing material 9 is different from the plastic insulating material used in particular for the side wall 15. In this way, the sealing of said flange 8 through the side wall 15 is tight because the properties of the material of sealing do not change over time in the same way as the wall lateral, which is for example hard plastic.
  • connection means electric is shown more clearly in Figure 4 which represents a view three-dimensional of this flange, as well as in Figures 5a and 5b.
  • This contact flange 8 is made from a band of a good conductor metal material electricity, such as an alloy composed of copper. The thickness of this band can be of the order of 0.1 mm.
  • the flange comprises a first part 8a in S-shape, a second part 8b and the intermediate part 8c which is intended to be fixed through the side wall of the bottom of the housing by the sealing material.
  • the first S-shaped portion 8a of the flange 8 constitutes a spring of compression.
  • the printed circuit board compresses with a determined force F each first part of the flanges 8 to level of the contact pads of the printed circuit board. This makes it possible to establish a good electrical contact between the flange and the corresponding contact pad.
  • the first one part 8a of the flange 8 thus compressed is shown in phantom in the figure 5a.
  • the printed circuit board 10 rests on a spacer 19 separating it from the stack 14. This may also make it possible not to unnecessarily damage the first part of each flange 8 at the time of the closing the housing.
  • the intermediate part 8c and the second part 8b of the flange have a general blade shape.
  • the second part 8b of this flange is pierced with a hole 18 so as to be attached to one end of a track conductive as explained below.
  • the end of the second part 8b of the flange is narrowed to facilitate mounting of the flange through the openings of the wall portions accommodating it before fixing it with the material of sealing.
  • a boss 29 may be practiced in particular by stamping or stamping in the intermediate portion 8c of this flange to be able to position said flange in openings in each sidewall portion.
  • Each opening is thus formed of sufficient size in said wall portions to facilitate the introduction of the second part.
  • the height of each opening can be for example 0.2 mm, while the thickness of the second part is 0.1 mm.
  • the height of the boss can be substantially equal to the height of each opening which allows to properly position the intermediate part of the flange before the introduction of the sealing material into the cavity of the side wall.
  • the width of each opening of the wall portions receiving a flange can be substantially equal to or slightly greater than the width of the flange.
  • each flange 8 is thus connected to a respective end of a conductive track 6 and 7 defining in particular an antenna of each strand 4 and 5 of the bracelet.
  • This electrical connection is made by means of head rods, such as connection 24 screwed into respective holes 23 formed in a plastic rim 20 of the bottom 2 in extension of the side wall 15.
  • Each hole can be self-tapped by the connection screw or may initially comprise a tapping.
  • connection screws 24 passes through a suitable hole 18 of the second part of the flange 8 and a suitable hole 42 of the end of the track conductive 6 and 7 corresponding to connect. Since the head of the screw is larger diameter than the holes 18 and 42, the second part of the flange and the end of the conductive track can come into direct contact with the surface upper insulating flange 20 by completely screwing each connection screw 24 in the threaded holes 23.
  • each strand 4 and 5 of the bracelet is fixed to the housing between the flange 20 of the bottom in extension of the side wall 15 and the middle part 3 by the fastening means which hold the upper part 3 on the lower part 2 of the housing.
  • each tubular portion 22 are formed on each rim 20 to receive the corresponding end of the strand to fix to the housing.
  • Each end of the strands comprises two openings 41 of complementary shapes to be fitted on the tubular portions 22.
  • Screws 40 shown in Figure 2a, pass through each hole 21 portions tubular 22 and each opening 41 strands of the bracelet to be screwed into tapping of the upper part not shown. Thus, the bracelet is fixed at housing when the latter is closed.
  • each end of the track 7 is positioned on the second part of the corresponding flange 8 of whereby the holes 18 and 42 are arranged substantially coaxially.
  • the connection screws 24 can be introduced into the holes 18 and 42 so that they can be screwed into the threaded holes 20.
  • this second part of the flange 8 is distant from the surface upper flange 20, this second part can flex elastically when the screw connection is screwed into contact with the upper surface of the flange.
  • a good electrical connection is established between each flange and the end corresponding to the conductive track.
  • Each electrical contact flange 8 is introduced from its second part, whose end is narrowed, through each opening 31 made in the portions 27 and 28 of the side wall 15. Due to this narrowing of the second part and the the thickness of the blade is almost twice as small as the height of the opening 31, the introduction of this flange is facilitated. Said flange 8 is therefore introduced through the openings 31 from the inside of the housing until the hole 18 of the second part is positioned substantially coaxially with the hole tapped 23 formed in the flange 20. The intermediate portion of the flange is thus positioned in the openings 31 of the portions 27 and 28 thanks to the boss 29 whose height is substantially equal to the height of each opening 31.
  • a specific tool 50 such as a syringe
  • a specific tool 50 is brought into the cavity 26 to a certain distance from the bottom of the cavity to introduce the material of sealing 9 in liquid form, such as polymerizable glue or silicone.
  • the tool specific is guided in its descent by guiding means 16, visible also in Figures 1b, 2a and 2b.
  • These guide means 16 made in part in each portion 27 and 28 of the side wall are located between the two flanges at to stare.
  • These guide means have a shape substantially complementary to the part taper of the specific tool. This allows to stop this tool during its descent in the cavity to a determined distance from the bottom of the cavity below each intermediate portion of the flanges positioned.
  • the location of the tool specific in the cavity is shown by dashed lines in Figure 3a.
  • a determined quantity of glue polymerizable liquid is introduced into the cavity from the lower end of the tool.
  • the liquid adhesive 9 spreads in said cavity 26 also by plugging each opening 31 portions 27 and 28 without overflow and coating the part intermediate flanges 8.
  • the tool 50 is gradually withdrawn from the cavity.
  • the tool can introduce glue while leaving the cavity so that the level of the glue introduced reaches the upper edge of the cavity 26. From this moment, a certain period of time must be counted so that the glue solidifies as shown in Figure 3b. This period of time can be of the order of 24 hours at room temperature.
  • the glue is relatively elastic with good adhesion to surfaces interior of the cavity 26, this makes it possible to seal said flanges in the cavity 26 of the side wall 15 which is one of the aims of the invention.
  • the outer portion 28 of the side wall comprises a flare 25 following the opening 31 of passage of the flange.
  • This flare 25 is intended to allow the second part of the flange, which is distant from the upper surface of the flange 20 in the position of rest, to be able to flex without permanent deformation. In this way, this second flange part can be attached with one end of the conductive track of the strap by means of the connecting screws until coming into contact with the upper surface of the flange 20 as explained above.
  • the assembly of all the components of the case and the bracelet can be undertaken with especially the printed circuit board that compresses the first part of each flange at the contact pads when closing the housing.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
EP20040019954 2003-09-03 2004-08-23 Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements Expired - Lifetime EP1513222B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20040019954 EP1513222B1 (de) 2003-09-03 2004-08-23 Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03020024 2003-09-03
EP03020024A EP1513221A1 (de) 2003-09-03 2003-09-03 Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements
EP20040019954 EP1513222B1 (de) 2003-09-03 2004-08-23 Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements

Publications (2)

Publication Number Publication Date
EP1513222A1 true EP1513222A1 (de) 2005-03-09
EP1513222B1 EP1513222B1 (de) 2014-04-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040019954 Expired - Lifetime EP1513222B1 (de) 2003-09-03 2004-08-23 Tragbares Armbandgerät mit elektrischem Verbindungselement durchs Gehäuse und Verfahren zur Montage des Verbindungselements

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947179A (en) * 1988-05-27 1990-08-07 Junghans Uhren Gmbh Antenna for a radio controlled timepiece
US5168281A (en) * 1990-05-16 1992-12-01 Seiko Epson Corporation Antenna connection device for electronic equipment
US5450091A (en) * 1988-08-05 1995-09-12 Seiko Epson Corporation Variable size antenna device having resonance frequency compensation
US5526006A (en) * 1989-11-10 1996-06-11 Seiko Epson Corporation Electronic device wristband

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947179A (en) * 1988-05-27 1990-08-07 Junghans Uhren Gmbh Antenna for a radio controlled timepiece
US5450091A (en) * 1988-08-05 1995-09-12 Seiko Epson Corporation Variable size antenna device having resonance frequency compensation
US5526006A (en) * 1989-11-10 1996-06-11 Seiko Epson Corporation Electronic device wristband
US5168281A (en) * 1990-05-16 1992-12-01 Seiko Epson Corporation Antenna connection device for electronic equipment

Also Published As

Publication number Publication date
EP1513222B1 (de) 2014-04-16

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