US20180295951A1 - Portable electronic device with strap - Google Patents
Portable electronic device with strap Download PDFInfo
- Publication number
- US20180295951A1 US20180295951A1 US15/776,400 US201615776400A US2018295951A1 US 20180295951 A1 US20180295951 A1 US 20180295951A1 US 201615776400 A US201615776400 A US 201615776400A US 2018295951 A1 US2018295951 A1 US 2018295951A1
- Authority
- US
- United States
- Prior art keywords
- strap
- housing
- connection
- contact
- mechanical
- 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.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/14—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps characterised by the way of fastening to a wrist-watch or the like
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/14—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps characterised by the way of fastening to a wrist-watch or the like
- A44C5/145—Hooks
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/0007—Bracelets specially adapted for other functions or with means for attaching other articles
- A44C5/0015—Bracelets specially adapted for other functions or with means for attaching other articles providing information, e.g. bracelets with calendars
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/0053—Flexible straps
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/18—Fasteners for straps, chains or the like
- A44C5/22—Fasteners for straps, chains or the like for closed straps
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/0007—Bracelets specially adapted for other functions or with means for attaching other articles
Definitions
- the invention relates to a portable electronic device that can be worn on the body by means of the strap.
- the device comprises a housing that is electrically and mechanically connected to the strap.
- Portable electronic devices that are worn on the body by means of a strap are known, for example, in the form of so-called smart watches.
- WO 2015/079096 A1 describes a smart watch, in which the physical activity of the user is displayed through the change of the appearance of the wrist strap of the smart watch.
- the change of the appearance is accomplished through electrochromic displays in the wrist strap, whose colour can be changed by application of an electrical voltage.
- the sensors for measuring the physical activity of the user are situated in the housing of the smart watch such that there is a need for an electrical connection between the housing and the wrist strap.
- the invention proposes a novel solution for the mechanical and electrical connection between a strap and the housing of an electronic device that is worn on the body by means of the strap.
- the invention proposes a portable electronic device having a housing and a strap that is mechanically attached to the housing.
- the housing encompasses electronic components and protects them from ambient influences.
- the strap bears further electronic components, whereby an electrically conductive connection exists between the housing and the strap.
- the proposed electronic device is characterised in that the strap is mechanically attached to the housing by means of a form-fitting connection, whereby the connection is oriented appropriately such that a tensile force acting on the strap in the strap's longitudinal direction generates a force component that aims to push the strap onto the housing.
- the proposed electronic device is advantageous in that the strap can be mounted easily on the housing and in that a mechanical and electrical connection between the housing and the strap can be produced in a single assembly step.
- the mechanical connection between the strap and the housing also resists tensile forces without forces acting on the electric contacts that might lead to a disconnection of the electrical connection between the strap and the housing.
- the mechanical connection is secured through a latching mechanism.
- the mechanical connection is secured through a rotary or sliding mechanism.
- the strap comprises a projecting mechanical element that engages a corresponding recess in the housing.
- a projecting mechanical element is provided on the housing and engages a corresponding recess in the strap.
- the projecting mechanical element is designed in the shape of a fin or a peg. Multiple fins or pegs may be provided just as well.
- the projecting mechanical element can be a fin whose one side surface forms an angle of less than 90° with one main surface of the strap.
- the side surface touches against the recess such that a tensile force acting on the strap in the strap's longitudinal direction generates a force component that aims to push the strap onto the housing.
- the strap comprises an electrical plug contact with a contact pin that engages a contact socket that comprises at least one contact spring in order to establish the electrical connection between the strap and the housing.
- the contact pin is pushed against the at least one contact spring by the action of the tensile force acting on the strap in the strap's longitudinal direction.
- the latching mechanism is designed to be detachable for disconnection of the mechanical connection between the strap and housing.
- Another exemplary embodiment provides for arranging a gasket, sections of which are conductive.
- the conductive sections of the gasket form contact surfaces for the electrical connection.
- the gasket is arranged between the strap and the housing on surfaces that are pushed against each other by the action of a tensile force acting on the strap in the strap's longitudinal direction.
- an electrical energy storage system is accommodated in the strap.
- the energy storage system can be a flexible battery. Both individual and multiple batteries can be used.
- the batteries can be rechargeable just as well as non-rechargeable. In certain applications, it may make sense to use a combination of rechargeable and non-rechargeable batteries.
- FIG. 1 shows a perspective view of an electronic device according to the invention
- FIGS. 2A and 2B show the electronic device of FIG. 1 in a partial top view from above;
- FIG. 3A shows a detail of FIG. 1 in a partial elevation view
- FIG. 3B shows a cross-section through FIG. 3A ;
- FIG. 3C shows a normal force decomposition
- FIGS. 4A to 4D show design variants of a form-fitting connection between strap and housing
- FIGS. 5A to 5D show detail views of the electrical contacts
- FIG. 6 shows an alternative plug contact
- FIGS. 7A to 7C show embodiments of electrical contacts
- FIGS. 8A to 8C show a cross-sectional view of the connection region between strap and housing.
- FIG. 1 shows a perspective view of an electronic device 100 that is worn on the body, in the form of a so-called smart watch.
- the invention is not limited to a smart watch, but can be used with all electronic devices that comprise a housing that is worn on the body by means of a strap as long as both a mechanical and an electrical connection is required between the housing and the strap.
- the smart watch 100 comprises a housing 101 that protects the electronic components (not shown) of the smart watch from ambient influences such as, for example, dirt or water.
- the smart watch 100 comprises a display 102 on the upper side and control elements 104 A and 104 B on a long side 103 of the housing 101 .
- the strap can be composed of two distinct pieces, one end of each piece being connected to the housing, the remaining ends being connected through a connecting mechanism such as a buckle, or can be composed of one piece comprising an elastic or extendable section allowing a user to extend the perimeter of the strap when putting on the smart watch.
- a strap 107 is connected to the housing 101 on the short sides 106 A and 106 B.
- the strap 107 comprises a display 108 which serves, for example, for matching the appearance of the smart watch to the taste of the user or for indicating, in rapidly recognisable manner, to the user additional information through certain colours without the user having to read alphanumerical information on the display 102 .
- the display 108 is designed, for example, as an electrochromic display.
- the invention is not limited to a certain type of display as long as the display 108 is well-suited for attachment on a more or less flexible strap 107 .
- displays for alphanumerical display of information on the strap 107 can be used just as well.
- FIG. 2A shows the smart watch 100 of FIG. 1 in a schematic top view from above, whereby only one half of the strap 107 is shown in FIG. 2A .
- a single display 108 extends across the entire surface of the one half of strap 107 .
- FIG. 2B schematically shows a further exemplary embodiment of the smart watch 100 that differs from the exemplary embodiment shown in FIG. 2A in that multiple displays 108 A to 108 C are attached on the upper side of the one half of the strap 107 .
- the displays 108 , 108 A to 108 C are controlled electrically.
- electrical cables are provided in the strap 107 that are connected to the electronic components on the inside of the housing 101 by means of an electrical connection, such as shall be explained in more detail in the following.
- FIG. 3A shows a detail of an exemplary embodiment of the smart watch 100 in a partially elevated view.
- the elevated view in FIG. 3A shows electrical connecting cables 301 A, 301 B that extend from the display 108 to plugs 302 A and/or 302 B.
- the electrical connecting cables 301 A, 301 B are well-suited for conducting both electrical signals and electrical currents for the energy supply of electronic components.
- the plugs 302 A and 302 B establish an electrical connection to the electronic components on the inside of the housing 101 .
- Dashed lines at 303 A and 303 B indicate regions, in which further plugs can be arranged, if needed.
- a latching mechanism 304 latching the strap 107 to the housing 101 is shown. The surface of the strap 107 facing the viewer in FIG.
- 3A shall be called the main surface 305 of the strap 107 hereinafter.
- Fins 306 , 307 are arranged in the region of the strap 107 that is to be mechanically connected to the housing 101 ; the function of the fins will be explained in more detail in the context of FIG. 3B .
- FIG. 3B shows a cross-section of the exemplary embodiment of FIG. 3A along the line B-B shown in FIG. 3A .
- the watch strap 107 is placed against the housing 101 of the smart watch 100 in the arrow direction 311 , whereby the latching mechanism 304 snaps in and the watch strap is mechanically fixed to the housing 101 .
- the latching mechanism 304 prevents the watch strap 107 from detaching from the housing 101 when there are no tensile forces acting.
- the previously mentioned fins 306 and 307 engage corresponding recesses 308 and 309 in the housing 101 .
- a form-fitting connection that is additionally secured is formed between the watch strap 107 in the housing 101 by this means.
- FIG. 3B shows a cross-section of the exemplary embodiment of FIG. 3A along the line B-B shown in FIG. 3A .
- 3B shows the fin 306 engaging recess 308 .
- magnification shows that the side surfaces 312 A, 312 B of the fin 306 are inclined and form an angle ⁇ and/or ⁇ ′ with respect to the main surface 305 that is different from a right angle.
- the tensile force is generated e.g. by a proper adjustment of the strap length to the body part to which it is to be attached, by elastic elements in the strap which tighten the strap appropriately or by other means.
- the side surfaces 312 A, 312 B of the fin 306 are inclined appropriately such that they form thrust surfaces for correspondingly inclined side surfaces of the recess. Since the side surface 312 A has an angle of inclination of ⁇ 90°, a tensile force acting between the strap 107 and the housing 101 in the direction of the arrow 313 shown in FIG. 3B also has a force component 314 ( FIG. 3C ) that pushes the fin 306 and/or the strap 107 toward the housing 101 and/or onto the housing, in the manner of two interlocked fish scales. This correlation is illustrated in FIG. 3C by a normal force decomposition. The force component 315 is received by the side surface of the recesses 308 that are opposite to the side surface 312 A. The same applies to the effect of the fin 307 .
- the resulting sinus is 0.25.
- a tensile force of 10 Newton in the strap leads to the generation of a retention force 314 of 2.5 Newton towards the inside.
- FIGS. 4A to 4D show design variants of the form-fitting connection between the strap 107 and the housing 101 .
- FIG. 5A shows a magnified cross-section through the plug connector 302 A.
- the flat contact pin 501 arranged on the strap 107 engages a flat contact socket 502 when the strap 107 is placed against the housing 101 appropriately such that the fins 306 , 307 engage the recesses 308 , 309 .
- the strap performs a small longitudinal motion due to the side surfaces of the fins in FIG. 5A being inclined (towards the left in FIG. 5A ).
- all contact sockets 502 on the housing are wider than the contact pins 5011 strap 107 . In the actual case shown in FIG.
- the right edge of the contact pin 501 is flush with the right edge of the contact socket 502 , whereas a gap remains between the left edges of the contact pin 501 and/or contact socket 502 , when the left edges of the fins 306 , 307 are flush with the left edges of the recesses 308 , 309 .
- said gap is approximately 0.15 mm.
- FIG. 5B shows a cross-sectional view through the contact socket 502 along the line A-A in FIG. 5A .
- the contact socket 502 comprises a springy groove 503 in order to establish good electrical contact to the contact pin 501 .
- the contact socket 502 is connected to the electrical components on the inside of the housing 101 by an electrical conductor 504 .
- the spring effect can be attained in another exemplary embodiment by mounting the contact socket while it is in a pretensioned state.
- the contact socket 502 comprises one or two electrical contact surfaces, whereby at least one exerts the aforementioned spring effect on the contact pin 501 .
- the spring effect can also be attained through a cambered contact pin 501 .
- Gaskets 504 are provided on the strap 107 and protect the electrical contact region from dirt and moisture when the strap 107 is inserted into the housing 101 ( FIG. 5D ).
- FIG. 5C shows a top view of the contact socket 502 without (left) and with contact pin 501 plugged in (right).
- FIG. 5D shows the situation, in which the strap 107 is inserted into the housing 101 .
- FIG. 6 shows another alternative embodiment of the electrical contacts between strap 107 and housing 11 .
- the contact pins 501 are provided to be round and are pushed successively against springy contacts in the contact sockets due to the thrust surfaces between the fins 306 , 307 and recesses 308 , 309 being inclined, as is evident from FIG. 6 .
- a pluggable element such as a pin further secures the connection between strap and housing.
- FIGS. 7A to 7C show further alternative embodiments of the electric contacts, in which the electrical contact is provided by a compressive force between the pairs of contacts.
- the installation height decreases successively starting from a short pin 701 with socket 702 ( FIG. 7A ) via two contacts 703 that are provided in the form of an elevation ( FIG. 7B ) to two contact surfaces 703 , 704 , whereby only contact surface 703 is provided as an elevation ( FIG. 7C ).
- the gasket 504 is used as a contact.
- the gasket 504 is produced, in alternating manner, from conductive elastic material and insulating elastic material.
- the conductive sites thus also serve as contacts.
- a contact of this type requires a reliable retention force over the entire length of the gasket.
- Electrically conductive rubber materials that are suitable for this purpose are commercially available and are used mainly in the area of EMC and in keys. They make sense when the signal currents are small.
- the shape of the contacts integrated into the gasket 504 must be appropriate for unambiguous and precise mounting such that the conductive sites are placed on each other correctly.
- the contacts have been shown magnified on purpose such the workflows of inserting, guiding through fins and recess and the latching of the latching mechanism take place independent of each other and consecutively for improved illustration.
- fins with a height of 0.5 mm and contacts with a length of 0.5 mm have proven to be expedient.
- FIG. 8 shows the latching mechanism 304 in more detail.
- the latching mechanism 304 comprises a spring tongue 801 with a hook 802 .
- the spring tongue 801 is firmly connected to the strap 107 .
- Different types of attachment, such as welding, gluing or the like, are conceivable for this purpose.
- the spring tongue 801 and the strap 107 can be produced in the form of a single part.
- the spring effect is generated by the spring tongue 801 as such or in the connecting site between the spring tongue 801 and strap 107 .
- the housing 101 has an undercut recess 803 provided in it, which is engaged by the spring tongue 801 when the strap 107 is placed against the housing 101 .
- the recesses 803 comprise a latching surface 804 .
- the hook 802 of the spring tongue 801 reaches behind the latching surface 804 .
- the spring tongue 801 can be detached again only by inserting a tool 806 .
- the tool 806 pushes the spring tongue 801 away from the latching surface 804 against the acting spring force such that the spring tongue 801 gets released and the strap 107 can be taken off the housing.
- latching mechanism 304 It is insignificant for the invention at which site the latching mechanism 304 is provided. Moreover, more than a single latching mechanism 304 can be provided just as well. A person skilled in the art is aware and will select for the individual application further latching mechanisms, including those that can be released without a tool or those that are fixed by means of a rotary or sliding motion.
- an exemplary embodiment of the invention can also have an electrical energy store accommodated in the strap, for example one or more battery or batteries.
- the energy store can be provided in the form of a flexible battery.
- the one or more battery or batteries are primary or secondary batteries.
- the batteries are connected, for example, to the electronic components in the housing 101 by means of the electrical connecting cables 301 A, 301 B.
Landscapes
- Electric Clocks (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention proposes a portable electronic device (100) having a housing (101) and a strap (107) that is mechanically attached to the housing. The housing encompasses electronic components and protects them from ambient influences. The strap bears further electronic components (108), whereby an electrically conductive connection (301A, 301B) exists between the housing and the strap. The strap is mechanically attached to the housing by means of a form-fitting connection (304), whereby the connection is oriented appropriately such that a tensile force acting on the strap in the strap's longitudinal direction generates a force component that aims to push the strap onto the housing. The strap can be mounted easily on the housing and establishes a mechanical and electrical connection between the housing and the strap in a single assembly step. The mechanical connection between the strap and the housing also resists tensile forces without forces acting on the electric contacts that might lead to a disconnection of the electrical connection between the strap and the housing.
Description
- The invention relates to a portable electronic device that can be worn on the body by means of the strap. The device comprises a housing that is electrically and mechanically connected to the strap.
- Portable electronic devices that are worn on the body by means of a strap are known, for example, in the form of so-called smart watches.
- For example WO 2015/079096 A1 describes a smart watch, in which the physical activity of the user is displayed through the change of the appearance of the wrist strap of the smart watch. The change of the appearance is accomplished through electrochromic displays in the wrist strap, whose colour can be changed by application of an electrical voltage. The sensors for measuring the physical activity of the user are situated in the housing of the smart watch such that there is a need for an electrical connection between the housing and the wrist strap. However, it may well be advantageous to have individual sensors or parts of the analytical electronics situated in the strap, since the strap has pronounced contact, for example, to the arm of the user and, in particular, to the inside of the wrist. This means, again, that electrical signals and the supply of power need to be exchanged between the housing and the strap.
- Based on the aforementioned, the invention proposes a novel solution for the mechanical and electrical connection between a strap and the housing of an electronic device that is worn on the body by means of the strap.
- To solve the stated object, the invention proposes a portable electronic device having a housing and a strap that is mechanically attached to the housing. The housing encompasses electronic components and protects them from ambient influences. The strap bears further electronic components, whereby an electrically conductive connection exists between the housing and the strap. The proposed electronic device is characterised in that the strap is mechanically attached to the housing by means of a form-fitting connection, whereby the connection is oriented appropriately such that a tensile force acting on the strap in the strap's longitudinal direction generates a force component that aims to push the strap onto the housing. The proposed electronic device is advantageous in that the strap can be mounted easily on the housing and in that a mechanical and electrical connection between the housing and the strap can be produced in a single assembly step. The mechanical connection between the strap and the housing also resists tensile forces without forces acting on the electric contacts that might lead to a disconnection of the electrical connection between the strap and the housing.
- In an exemplary embodiment, the mechanical connection is secured through a latching mechanism.
- In an exemplary embodiment, the mechanical connection is secured through a rotary or sliding mechanism. In another exemplary embodiment, the strap comprises a projecting mechanical element that engages a corresponding recess in the housing. Alternatively, in another exemplary embodiment, a projecting mechanical element is provided on the housing and engages a corresponding recess in the strap.
- In an actual embodiment, the projecting mechanical element is designed in the shape of a fin or a peg. Multiple fins or pegs may be provided just as well.
- The projecting mechanical element can be a fin whose one side surface forms an angle of less than 90° with one main surface of the strap. The side surface touches against the recess such that a tensile force acting on the strap in the strap's longitudinal direction generates a force component that aims to push the strap onto the housing.
- In an exemplary embodiment, the strap comprises an electrical plug contact with a contact pin that engages a contact socket that comprises at least one contact spring in order to establish the electrical connection between the strap and the housing.
- In one exemplary embodiment, the contact pin is pushed against the at least one contact spring by the action of the tensile force acting on the strap in the strap's longitudinal direction.
- In an advantageous embodiment, the latching mechanism is designed to be detachable for disconnection of the mechanical connection between the strap and housing.
- Another exemplary embodiment provides for arranging a gasket, sections of which are conductive. The conductive sections of the gasket form contact surfaces for the electrical connection.
- In an exemplary embodiment, the gasket is arranged between the strap and the housing on surfaces that are pushed against each other by the action of a tensile force acting on the strap in the strap's longitudinal direction.
- In an advantageous exemplary embodiment, an electrical energy storage system is accommodated in the strap. The energy storage system can be a flexible battery. Both individual and multiple batteries can be used. The batteries can be rechargeable just as well as non-rechargeable. In certain applications, it may make sense to use a combination of rechargeable and non-rechargeable batteries.
- The drawing shows exemplary embodiments of the invention, whereby identical or corresponding elements are identified with identical or similar reference signs. In the figures:
-
FIG. 1 : shows a perspective view of an electronic device according to the invention; -
FIGS. 2A and 2B show the electronic device ofFIG. 1 in a partial top view from above; -
FIG. 3A shows a detail ofFIG. 1 in a partial elevation view; -
FIG. 3B shows a cross-section throughFIG. 3A ; -
FIG. 3C shows a normal force decomposition; -
FIGS. 4A to 4D show design variants of a form-fitting connection between strap and housing; -
FIGS. 5A to 5D show detail views of the electrical contacts; -
FIG. 6 shows an alternative plug contact; -
FIGS. 7A to 7C show embodiments of electrical contacts; and -
FIGS. 8A to 8C show a cross-sectional view of the connection region between strap and housing. -
FIG. 1 shows a perspective view of anelectronic device 100 that is worn on the body, in the form of a so-called smart watch. However, it needs to be noted that the invention is not limited to a smart watch, but can be used with all electronic devices that comprise a housing that is worn on the body by means of a strap as long as both a mechanical and an electrical connection is required between the housing and the strap. - The
smart watch 100 comprises ahousing 101 that protects the electronic components (not shown) of the smart watch from ambient influences such as, for example, dirt or water. Thesmart watch 100 comprises adisplay 102 on the upper side andcontrol elements long side 103 of thehousing 101. - According to the present embodiment, the strap can be composed of two distinct pieces, one end of each piece being connected to the housing, the remaining ends being connected through a connecting mechanism such as a buckle, or can be composed of one piece comprising an elastic or extendable section allowing a user to extend the perimeter of the strap when putting on the smart watch.
- A
strap 107 is connected to thehousing 101 on theshort sides strap 107 comprises adisplay 108 which serves, for example, for matching the appearance of the smart watch to the taste of the user or for indicating, in rapidly recognisable manner, to the user additional information through certain colours without the user having to read alphanumerical information on thedisplay 102. Thedisplay 108 is designed, for example, as an electrochromic display. However, the invention is not limited to a certain type of display as long as thedisplay 108 is well-suited for attachment on a more or lessflexible strap 107. In particular, displays for alphanumerical display of information on thestrap 107 can be used just as well. -
FIG. 2A shows thesmart watch 100 ofFIG. 1 in a schematic top view from above, whereby only one half of thestrap 107 is shown inFIG. 2A . In the exemplary embodiment shown inFIG. 2A , asingle display 108 extends across the entire surface of the one half ofstrap 107. -
FIG. 2B schematically shows a further exemplary embodiment of thesmart watch 100 that differs from the exemplary embodiment shown inFIG. 2A in thatmultiple displays 108A to 108C are attached on the upper side of the one half of thestrap 107. - The
displays strap 107 that are connected to the electronic components on the inside of thehousing 101 by means of an electrical connection, such as shall be explained in more detail in the following. -
FIG. 3A shows a detail of an exemplary embodiment of thesmart watch 100 in a partially elevated view. The elevated view inFIG. 3A shows electrical connectingcables display 108 toplugs 302A and/or 302B. The electrical connectingcables plugs housing 101. Dashed lines at 303A and 303B indicate regions, in which further plugs can be arranged, if needed. Moreover, alatching mechanism 304 latching thestrap 107 to thehousing 101 is shown. The surface of thestrap 107 facing the viewer inFIG. 3A shall be called the main surface 305 of thestrap 107 hereinafter.Fins strap 107 that is to be mechanically connected to thehousing 101; the function of the fins will be explained in more detail in the context ofFIG. 3B . -
FIG. 3B shows a cross-section of the exemplary embodiment ofFIG. 3A along the line B-B shown inFIG. 3A . It is evident fromFIG. 3B that thewatch strap 107 is placed against thehousing 101 of thesmart watch 100 in the arrow direction 311, whereby thelatching mechanism 304 snaps in and the watch strap is mechanically fixed to thehousing 101. Thelatching mechanism 304 prevents thewatch strap 107 from detaching from thehousing 101 when there are no tensile forces acting. In this context, the previously mentionedfins recesses housing 101. A form-fitting connection that is additionally secured is formed between thewatch strap 107 in thehousing 101 by this means. The magnified detail inFIG. 3B shows thefin 306engaging recess 308. Moreover, the magnification shows that the side surfaces 312A, 312B of thefin 306 are inclined and form an angle ϕ and/or ϕ′ with respect to the main surface 305 that is different from a right angle. - The tensile force is generated e.g. by a proper adjustment of the strap length to the body part to which it is to be attached, by elastic elements in the strap which tighten the strap appropriately or by other means.
- The side surfaces 312A, 312B of the
fin 306 are inclined appropriately such that they form thrust surfaces for correspondingly inclined side surfaces of the recess. Since theside surface 312A has an angle of inclination of ϕ<90°, a tensile force acting between thestrap 107 and thehousing 101 in the direction of thearrow 313 shown inFIG. 3B also has a force component 314 (FIG. 3C ) that pushes thefin 306 and/or thestrap 107 toward thehousing 101 and/or onto the housing, in the manner of two interlocked fish scales. This correlation is illustrated inFIG. 3C by a normal force decomposition. Theforce component 315 is received by the side surface of therecesses 308 that are opposite to theside surface 312A. The same applies to the effect of thefin 307. - With the height of the
fin 306 being 1 mm and at an angle of ϕ=75°, the resulting sinus is 0.25. This means that a tensile force of 10 Newton in the strap leads to the generation of aretention force 314 of 2.5 Newton towards the inside. Simultaneously, an angle of ϕ=75° leads to a displacement of 0.15 mm of thestrap 107 with respect to thehousing 101 while it is being placed against it. This displacement must be taken into account in the dimensions of contact sockets and contact and, as is explained below. - It is at the discretion of a person skilled in the art and it depends on the requirements on the electronic device whether a single fin or multiple fins are provided in a certain exemplary embodiment. Alternatively, the person skilled in the art can exchange the arrangement of fin and recess, i.e. the recess can be arranged on the strap and the fin can be arranged on the housing. Moreover, the person skilled in the art can combine the two alternatives, i.e. fin and recess are arranged to alternate on the strap and housing.
- Moreover, there is some freedom of design in the detailed provision of the fins as long as the provision of a form-fitting connection between the
strap 107 and thehousing 101 is ensured.FIGS. 4A to 4D show design variants of the form-fitting connection between thestrap 107 and thehousing 101. -
FIG. 5A shows a magnified cross-section through theplug connector 302A. Theflat contact pin 501 arranged on thestrap 107 engages aflat contact socket 502 when thestrap 107 is placed against thehousing 101 appropriately such that thefins recesses strap 107 is placed in thehousing 101, the strap performs a small longitudinal motion due to the side surfaces of the fins inFIG. 5A being inclined (towards the left inFIG. 5A ). To permit said longitudinal motion, allcontact sockets 502 on the housing are wider than the contact pins 5011strap 107. In the actual case shown inFIG. 5A , the right edge of thecontact pin 501 is flush with the right edge of thecontact socket 502, whereas a gap remains between the left edges of thecontact pin 501 and/orcontact socket 502, when the left edges of thefins recesses strap 107 is placed against thehousing 101, thecontact pin 501 moves from the right edge of thecontact socket 502 towards the contact socket's left edge. -
FIG. 5B shows a cross-sectional view through thecontact socket 502 along the line A-A inFIG. 5A . As is evident fromFIG. 5B , thecontact socket 502 comprises aspringy groove 503 in order to establish good electrical contact to thecontact pin 501. Thecontact socket 502 is connected to the electrical components on the inside of thehousing 101 by anelectrical conductor 504. - As an alternative to the cambered form of the contact socket shown in
FIGS. 5A and 5B , the spring effect can be attained in another exemplary embodiment by mounting the contact socket while it is in a pretensioned state. Thecontact socket 502 comprises one or two electrical contact surfaces, whereby at least one exerts the aforementioned spring effect on thecontact pin 501. As an alternative to the embodiments described above, the spring effect can also be attained through acambered contact pin 501. -
Gaskets 504 are provided on thestrap 107 and protect the electrical contact region from dirt and moisture when thestrap 107 is inserted into the housing 101 (FIG. 5D ). -
FIG. 5C shows a top view of thecontact socket 502 without (left) and withcontact pin 501 plugged in (right). Lastly,FIG. 5D shows the situation, in which thestrap 107 is inserted into thehousing 101. -
FIG. 6 shows another alternative embodiment of the electrical contacts betweenstrap 107 and housing 11. In this embodiment, the contact pins 501 are provided to be round and are pushed successively against springy contacts in the contact sockets due to the thrust surfaces between thefins FIG. 6 . - The use of a pluggable element such as a pin further secures the connection between strap and housing.
-
FIGS. 7A to 7C show further alternative embodiments of the electric contacts, in which the electrical contact is provided by a compressive force between the pairs of contacts. In the variants shown inFIGS. 7A to 7C , the installation height decreases successively starting from ashort pin 701 with socket 702 (FIG. 7A ) via twocontacts 703 that are provided in the form of an elevation (FIG. 7B ) to twocontact surfaces 703, 704, wherebyonly contact surface 703 is provided as an elevation (FIG. 7C ). - In yet another variant, the
gasket 504 is used as a contact. Thegasket 504 is produced, in alternating manner, from conductive elastic material and insulating elastic material. The conductive sites thus also serve as contacts. However, a contact of this type requires a reliable retention force over the entire length of the gasket. Electrically conductive rubber materials that are suitable for this purpose are commercially available and are used mainly in the area of EMC and in keys. They make sense when the signal currents are small. The shape of the contacts integrated into thegasket 504 must be appropriate for unambiguous and precise mounting such that the conductive sites are placed on each other correctly. - In the figures of the drawing, the contacts have been shown magnified on purpose such the workflows of inserting, guiding through fins and recess and the latching of the latching mechanism take place independent of each other and consecutively for improved illustration. In one practical embodiment, fins with a height of 0.5 mm and contacts with a length of 0.5 mm have proven to be expedient.
-
FIG. 8 shows thelatching mechanism 304 in more detail. Thelatching mechanism 304 comprises aspring tongue 801 with ahook 802. Thespring tongue 801 is firmly connected to thestrap 107. Different types of attachment, such as welding, gluing or the like, are conceivable for this purpose. Moreover, thespring tongue 801 and thestrap 107 can be produced in the form of a single part. In this context, the spring effect is generated by thespring tongue 801 as such or in the connecting site between thespring tongue 801 andstrap 107. Thehousing 101 has an undercutrecess 803 provided in it, which is engaged by thespring tongue 801 when thestrap 107 is placed against thehousing 101. Therecesses 803 comprise a latchingsurface 804. In the fully inserted stage shown inFIG. 8C , thehook 802 of thespring tongue 801 reaches behind the latchingsurface 804. When thespring tongue 801 is latched into therecess 803, it can be detached again only by inserting atool 806. In this context, thetool 806 pushes thespring tongue 801 away from the latchingsurface 804 against the acting spring force such that thespring tongue 801 gets released and thestrap 107 can be taken off the housing. - It is insignificant for the invention at which site the
latching mechanism 304 is provided. Moreover, more than asingle latching mechanism 304 can be provided just as well. A person skilled in the art is aware and will select for the individual application further latching mechanisms, including those that can be released without a tool or those that are fixed by means of a rotary or sliding motion. - Finally, an exemplary embodiment of the invention can also have an electrical energy store accommodated in the strap, for example one or more battery or batteries. In particular, the energy store can be provided in the form of a flexible battery. The one or more battery or batteries are primary or secondary batteries. The batteries are connected, for example, to the electronic components in the
housing 101 by means of the electrical connectingcables -
List of reference numbers 100 Smart watch 313 Tensile force 101 Housing 314 Force 102 Display 315 Force 101 Long side of the housing 501 Contact pin 104A, 104B Control elements 502 Contact socket 107 Strap 503 Groove 108 Display 504 Gasket 108A to 108C Displays 701 Contact pin 301A, 301B Connecting cables 702 Contact socket 302A, 302B Plug 703 Elevated contact surface 304 Latching mechanism 704 Contact surface 305 Main surface 801 Spring tongue 306, 307 Fin 802 Hook 308, 309 Recesses 803 Recess 311 Arrow 804 Covered surface 312A, 312B Side surfaces of the fin 806 Tool
Claims (13)
1. A portable electronic device having a housing and a strap that is mechanically attached to the housing, whereby the housing encompasses electronic components;
wherein the strap is mechanically attached on at least one of its ends to the housing by means of corresponding interlocking mechanical elements forming a form-fitting connection, whereby said corresponding mechanical elements comprise respective thrust surfaces oriented appropriately such that a tensile force acting on the strap in the strap's longitudinal direction and away from said housing generates a force component orthogonal to said longitudinal direction that aims to push the strap onto the housing.
2. The device according to claim 1 , wherein the mechanical connection is secured through a latching mechanism.
3. The device according to claim 1 , wherein the mechanical connection is secured through a rotary or sliding mechanism.
4. The device according to claim 1 , wherein the strap comprises a projecting mechanical element that engages a corresponding recess in the housing.
5. The device according to claim 1 , wherein a projecting mechanical element is provided on the housing and engages a corresponding recess in the strap.
6. The device according to claim 4 , wherein the projecting mechanical element is designed in the shape of a fin or a peg.
7. (canceled)
8. The device according to claim 6 , wherein the projecting mechanical element is a fin whose one side surface and a main surface of the strap form an angle smaller than 90°, in that the side surface touches against the recess such that a tensile force acting on the strap in the strap's longitudinal direction generates a force component that aims to push the strap on to the housing.
9. The device according to claim 1 , wherein the strap bears further electronic components; and whereby an electrically conductive connection exists between the housing and the strap;
and the strap comprises an electrical plug contact with a contact pin that engages a contact socket that comprises at least one contact spring in order to establish the electrical connection between the strap and the housing.
10. The device according to claim 98, wherein the contact pin is pushed against the at least one contact spring by the action of the tensile force acting on the strap in the strap's longitudinal direction.
11. The device according to claim 2 , wherein the latching mechanism is designed to be detachable for disconnection of the mechanical connection between the strap and housing.
12. The device according to claim 8 , wherein a gasket, sections of which are conductive, is arranged between the strap and the housing, whereby the conductive sections of the gasket form contact surfaces for the electrical connection.
13. The device according to claim 11 , wherein the gaskets are arranged between the strap and the housing on surfaces that are pushed against each other by the action of a tensile force acting on the strap in the strap's longitudinal direction.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015222588.7A DE102015222588A1 (en) | 2015-11-16 | 2015-11-16 | Portable electronic device |
DE102015222588.7 | 2015-11-16 | ||
PCT/EP2016/077160 WO2017084944A1 (en) | 2015-11-16 | 2016-11-09 | Portable electronic device with strap |
Publications (1)
Publication Number | Publication Date |
---|---|
US20180295951A1 true US20180295951A1 (en) | 2018-10-18 |
Family
ID=57394535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/776,400 Abandoned US20180295951A1 (en) | 2015-11-16 | 2016-11-09 | Portable electronic device with strap |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180295951A1 (en) |
DE (1) | DE102015222588A1 (en) |
WO (1) | WO2017084944A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11586153B1 (en) * | 2018-06-27 | 2023-02-21 | Apple Inc. | Watch band with adjustable color |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107966899A (en) * | 2017-12-25 | 2018-04-27 | 出门问问信息科技有限公司 | Intelligent watch |
KR20220126080A (en) * | 2021-03-08 | 2022-09-15 | 삼성전자주식회사 | Strap structure connected to housing and wearable electronic device including the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7703974B2 (en) * | 2002-12-12 | 2010-04-27 | Eric Bouille | Reversible watch |
US20150097517A1 (en) * | 2013-10-09 | 2015-04-09 | Jeffrey James Stephenson | Battery strap for electronic device |
US9742085B2 (en) * | 2014-09-30 | 2017-08-22 | Apple Inc. | Portable electronic device connector |
US10058149B1 (en) * | 2016-09-21 | 2018-08-28 | Apple Inc. | Attachment mechanism architectures for a watch band |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4809700A (en) * | 1986-03-21 | 1989-03-07 | Elettronica Trentina S.P.A. | Armlet device with an electrode for picking up physiological electrical potentials |
DE10035154A1 (en) * | 2000-07-19 | 2002-01-31 | Siemens Ag | Wristband for an electronic device |
DE10035153A1 (en) * | 2000-07-19 | 2002-01-31 | Siemens Ag | Mobile telecommunication device with bracelet |
DE10257439A1 (en) * | 2001-12-21 | 2003-09-18 | Seiko Instr Inc | Portable electronic device |
DE102004026554A1 (en) * | 2003-11-05 | 2006-03-16 | Freundes- und Förderkreis des Institutes für Textiltechnik der RWTH Aachen e.V. | Intelligent push-button system for use in smart textile, has upper and lower push-button halves with two electric contacts connected with one another electro-conductively for data, signal and power transmission, while closing connection |
GB2411337B (en) * | 2004-02-27 | 2006-12-06 | Simon Richard Daniel | Modular interface strap for multi-unit wristband and necklace assemblies |
US20060058695A1 (en) * | 2004-09-10 | 2006-03-16 | Tong-Pie Chen | Apparatus of an improvement on the structure of chest cardiogram sensor |
DE102008042239A1 (en) * | 2007-09-22 | 2009-07-16 | Papastefanou, Georgios, Dr. | Elastic wristband, has processor and sensor units, which are attached at carriers and are electrically connected with each other over carriers, where carrier is physically and electrically connected with each other using intermediate piece |
EP3073903A4 (en) | 2013-11-27 | 2017-07-12 | Polar Electro Oy | Displaying activity data |
CN204191756U (en) * | 2014-09-11 | 2015-03-11 | 深圳市北鼎晶辉科技股份有限公司 | Battery wrist strap |
-
2015
- 2015-11-16 DE DE102015222588.7A patent/DE102015222588A1/en not_active Withdrawn
-
2016
- 2016-11-09 US US15/776,400 patent/US20180295951A1/en not_active Abandoned
- 2016-11-09 WO PCT/EP2016/077160 patent/WO2017084944A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7703974B2 (en) * | 2002-12-12 | 2010-04-27 | Eric Bouille | Reversible watch |
US20150097517A1 (en) * | 2013-10-09 | 2015-04-09 | Jeffrey James Stephenson | Battery strap for electronic device |
US9742085B2 (en) * | 2014-09-30 | 2017-08-22 | Apple Inc. | Portable electronic device connector |
US10058149B1 (en) * | 2016-09-21 | 2018-08-28 | Apple Inc. | Attachment mechanism architectures for a watch band |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11586153B1 (en) * | 2018-06-27 | 2023-02-21 | Apple Inc. | Watch band with adjustable color |
Also Published As
Publication number | Publication date |
---|---|
WO2017084944A1 (en) | 2017-05-26 |
DE102015222588A1 (en) | 2017-05-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6293431B2 (en) | Electrical connector | |
USRE45018E1 (en) | Electrical connector with improved contacts | |
US8100722B2 (en) | Electrical card connector having spring arms and protrusions to increase retaining force for cards | |
US7628653B2 (en) | Electrical card connector with improved card restriction structure | |
JP3158697U (en) | Electrical connector | |
US20180295951A1 (en) | Portable electronic device with strap | |
US10524549B2 (en) | Wearable device | |
US7402049B2 (en) | Contact for an interposer-type connector array | |
US20140315446A1 (en) | Electrical Connector | |
EP3185337B1 (en) | Battery connector and circuit module | |
US20160226176A1 (en) | Power connector | |
KR20140099825A (en) | Electrical Connector Assembly and Electrical Connector therefore | |
US7670188B2 (en) | Electrical card connector with improved spring tab | |
US8047857B1 (en) | Battery connector | |
JP2016146255A (en) | Socket type connector and connector unit | |
CN201054396Y (en) | Electric connector | |
JP2002175735A (en) | Different direction displacement switch structure | |
US8033861B2 (en) | Electrical connector with improved board lock having elastic portion abutting against optical drive disk | |
TWM568528U (en) | Electrical connector and connector combination having the same | |
US10062998B2 (en) | Connector having a short circuit terminal | |
JP2016076479A (en) | Plug connector, plug connector unit, and connector device | |
JP2008047417A (en) | Terminal for electric connector, and electric connector equipped with the same | |
KR20150044212A (en) | Terminal for connector | |
US7686639B2 (en) | Electrical card connector having clips to increase retaining force for cards | |
JP2007087910A (en) | Electric connector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
AS | Assignment |
Owner name: MAGNOLIA LICENSING LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THOMSON LICENSING S.A.S.;REEL/FRAME:053570/0237 Effective date: 20200708 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |