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EP1477011A1 - Boitier ou partie de boitier, procede de fabrication d'un boitier ou d'une partie de boitier, et outil permettant la mise en oeuvre dudit procede - Google Patents

Boitier ou partie de boitier, procede de fabrication d'un boitier ou d'une partie de boitier, et outil permettant la mise en oeuvre dudit procede

Info

Publication number
EP1477011A1
EP1477011A1 EP03742864A EP03742864A EP1477011A1 EP 1477011 A1 EP1477011 A1 EP 1477011A1 EP 03742864 A EP03742864 A EP 03742864A EP 03742864 A EP03742864 A EP 03742864A EP 1477011 A1 EP1477011 A1 EP 1477011A1
Authority
EP
European Patent Office
Prior art keywords
assembly
housing
housing part
assemblies
rib
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Withdrawn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
EP03742864A
Other languages
German (de)
English (en)
Inventor
Cornelia Schrack
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1477011A1 publication Critical patent/EP1477011A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0249—Details of the mechanical connection between the housing parts or relating to the method of assembly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/126—Tenon and mortise joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3431—Telephones, Earphones
    • B29L2031/3437—Cellular phones

Definitions

  • the invention relates to a housing or housing part, which comprises a first and a second assembly u, and a manufacturing method for producing such a housing or housing part.
  • housings or housing parts are known from the prior art.
  • housing parts for mobile telephones so-called upper shells
  • housing parts for mobile telephones so-called upper shells
  • the window assembly and housing assembly are glued to produce the finished upper shell. Since the control of the gluing process is complicated, it is difficult to achieve a continuous quality of connection of the housing parts with the gluing process.
  • the strength of the connection between different top shells can vary widely.
  • the connection of the components can be non-uniform, which means that it can be relatively weak in one area and stronger in other areas.
  • the application of the adhesive requires an additional production step, which makes the manufacture of such housing parts more expensive and complicated.
  • multi-part plastic housings for magnetic storage media are known from Japanese patent application JP10021666-A.
  • the plastic housings consist of two parts, which are connected by ultrasonic welding.
  • one of the components comprises conical elevations, while circular depressions are formed in the other component.
  • the conical ridges of one component protrude into the circular recesses of the other, whereupon the ultrasonic welding process is started.
  • connection between the two assemblies is created at the contact points of the conical elevations with the circular depressions.
  • the disadvantage of this housing is a very inhomogeneous connection between the two housing parts, since the elevations or depressions are only in the corners of the housing, where the connection is relatively strong at points, while the two housing parts are not connected at all between the connection points. Therefore, such housings are not particularly resilient, especially not versatile, since such housings, for example, are not directly in the area of one
  • an upper shell or a housing for a mobile telecommunication terminal comprising a first, in particular a window module comprising a transparent area, and a second module, in particular a housing module. Assembly, the first assembly and the second assembly being connected or connectable by welding using ultrasound.
  • an upper shell or a housing for a mobile telecommunication terminal from two modules using the known method of ultrasonic welding (see, for example, Heinrich Kuttruff, "Physics and Technology of Ultrasound *, S. Hir- zel Verlag Stuttgart, page 373 ff.), the two modules are brought into contact first.
  • the upper shell or the housing is then inserted between a so-called sonotrode and an anvil of an ultrasonic welding system and ultrasonic waves are coupled into the upper shell or the housing via the sonotrode.
  • the modules are heated at their contact points by the ultrasound, melted at least in regions and connected in this way.
  • the ultrasonic welding process has the advantage that one process step is required less. There is no need to apply the adhesive. The manufacturing process is therefore simpler and also easier to automate. In addition, the process of applying the adhesive itself is susceptible to failure, since the uneven application of the adhesive makes the connection between the assemblies of the upper shell or the housing very inhomogeneous and, under certain circumstances, can be released very easily at certain weak points.
  • connection points result from the geometry of both assemblies, which can be determined and controlled very precisely, for example when using plastic injection molded parts, by means of the sophisticated manufacturing technology available.
  • connection of the two modules can be further improved by integrating so-called energy direction transmitters into one or both modules.
  • An increase is usually referred to as an energy direction indicator, Group is arranged such that when the assemblies to be connected are brought together, the contact between the assemblies before the ultrasonic welding preferably takes place on the upper sides of the energy direction sensor.
  • Energy directors have the task, among other things, of better defining the starting areas for ultrasonic welding and thus improving the quality of the connection between the two assemblies.
  • An energy direction transmitter for example, has sound-conducting properties, which lead to the ultrasound energy coupled into the relevant assembly being in the upper areas
  • the melting process during welding preferably begins in these areas.
  • Such energy direction transmitters can be formed at individual points in an assembly, but it is also possible, for example, that an energy direction transmitter designed as a rib-shaped or ridge-like elevation forms a self-contained elevation structure.
  • a closed survey structure can be useful, for example, if the connection between two assemblies is to be sealed, for example dustproof or watertight.
  • This embodiment can be particularly advantageous if one of the assemblies has an opening and the coherent rib or elevation structure is arranged around this opening.
  • annular elevation not to be formed on the first assembly, but in a corresponding position on the second assembly. After connecting both assemblies using ultrasound, an equivalent, sealed connection is then obtained.
  • energy directors can be designed as elongated elevations, so-called ribs.
  • the ribs can be reduced in their longitudinal direction to approximately conical or pyramidal elevations, so-called pins. This can be necessary, for example, if there is no space for elongated ribs due to the complex geometry or finely divided design of the components of a housing. Furthermore, it may be the case that the ribs change the external appearance of the housing.
  • Areas of a housing consisting of several modules that are directly connected by means of ribs can have different optical properties than housing parts that are not directly connected. This can be the case, for example, with optically transparent or partially transparent housing materials and regions. Due to the direct connection of two assemblies along the ribs, these areas can appear optically more transparent than areas that are not directly connected. By reducing the ribs to individual pins, this effect can be reduced or avoided, for example.
  • a rib is to be understood as an elongated elevation on a surface, the largest lateral extent of the elevation being to be significantly larger than the smallest lateral extent of the elevation. In particular, the largest lateral extent of the elevation should be more than a factor 2 larger than the smallest lateral extent.
  • a pin is to be understood as an elevation on a surface in which the greatest lateral extent and the smallest lateral extent are of the same order of magnitude, in particular have a ratio of at most 2: 1.
  • Lateral expansion is understood here to mean the expansion of the elevation parallel to the surface on which it is located.
  • a set for producing an upper shell or a housing for a mobile telecommunications terminal comprising a first assembly, in particular a window assembly comprising a transparent area, and a second assembly, in particular a housing assembly, the first assembly and the second assembly being connectable by ultrasound welding ,
  • a method for producing an upper shell or a housing for a mobile telecommunications terminal comprising a first module, in particular a window module comprising a transparent area, and a second module, in particular a housing assembly, the first assembly and the second assembly being connected by welding using ultrasound in a predetermined end position.
  • a housing assembly which comprises at least one pin or at least one hole suitable for receiving a pin, and furthermore comprises at least one rib or at least one groove suitable for receiving a rib , wherein the housing assembly is connectable or connected to a second housing assembly by ultrasonic welding using the pin or the bore and using the rib or the groove.
  • a device in particular an injection molding tool, which is designed to produce the housing assembly described in the preceding paragraph.
  • a device in particular an injection molding tool, which is designed to produce the housing assembly described in the preceding paragraph.
  • connecting elements such as a rib and a pin
  • the stability of the connection of two housing assemblies to a housing or housing part is further increased.
  • the absolute strength of the connection can be increased, on the one hand, and on the other hand, this leads to a more versatile resilience of the connection.
  • the process of welding the housing assemblies by ultrasonic welding generally begins at the ribs and / or pins designed for ultrasonic welding, a larger number of such connecting elements distributed over the assemblies leads to a more homogeneous connection between the two assemblies, which makes the connection more resilient and robust ,
  • the stability and homogeneity of a connection between two housing assemblies to form a housing or a housing part can furthermore be improved by forming one of the energy direction sensors mentioned in one of the assemblies and a correspondingly at least partially complementary structure in the other assembly.
  • the energy direction transmitter and the structure complementary to it must touch at least in regions when both housing assemblies have been brought into the end position predetermined for ultrasonic welding.
  • a housing assembly may have a Pm and the other assembly may have a hole suitable for receiving the pin, which at least partially receives the pin in the predetermined end position, and parts of the surface of the pin and parts of the surface of the hole continue to touch.
  • connection can also be improved and simplified by means of ultrasound if one of the two modules comprises an elongated rib, while in the other module one designed to receive the rib Groove comprises, wherein the rib is at least partially received by the groove in the predetermined end position of the assemblies before the ultrasonic welding process, and the surface of the rib and the groove touch at least partially.
  • a rib with an associated groove generally has a considerably larger contact area, which leads to a considerably more resilient connection after the ultrasonic welding.
  • the combination of at least one pin or at least one hole suitable for receiving a pin and at least one rib or at least one groove designed for receiving a rib is particularly advantageous, since in this case the combination of the strength of the connection and the positioning accuracy of the two components with respect to one another prior to ultrasonic welding and versatile resilience of the connection can be advantageously linked.
  • the positioning accuracy when bringing the assemblies together before yours Connection as well as the homogeneity and resilience of the ultrasonic welding connection with the number of structures used and their expansion is particularly advantageous.
  • Ribs / grooves at various suitable locations on the assemblies ensure a very firm connection, while pins / bores can be formed at other locations, which are particularly unsuitable, for example, for ribs / grooves, since they are, for example, too narrow, delicate and / or delicately designed are.
  • a housing part or a housing comprising a first assembly and a second assembly, the first and the second assembly being connected or connectable in a predetermined end position by welding using ultrasound , wherein the housing part further comprises at least one pin in one of the assemblies and at least one at least partially complementary, in the predetermined end position of the at least one pin opposite bore in the other assembly and wherein the housing part further comprises at least one rib in one of the assemblies and at least an at least partially complementary groove in the predetermined end position of the at least one rib opposite groove in the other assembly.
  • modules ensure a particularly homogeneous and durable connection between the two modules. Furthermore, such a construction leads to simplification of the positioning of both construction groups before the actual ultrasonic welding process, since the rib and the associated groove or the pin and the associated hole virtually snap into one another. In the locked position, only a minimal movement of both assemblies is then possible, at least parallel to the surface along which they are connected.
  • more than one rib-groove combination and / or more than one pin-bore combination can be present in the assemblies.
  • each further such structure increases the positioning accuracy of the two assemblies before ultrasonic welding and the homogeneity and strength of the connection after welding.
  • rib / groove and Pm / bore structures can also be combined with rib-shaped or pin-shaped elevations on the surface of one of the assemblies, the energy direction indicators mentioned above. Structures of complementary shape need not be present in the other assembly for such energy directors. During the ultrasonic welding process, these elevations connect to the areas of the other assembly that are in contact with them. These structures further strengthen and homogenize the connection of two assemblies to form a housing or housing part.
  • a first assembly of a housing or housing part comprises an opening which extends from at least one area of a second assembly of the housing or housing part is covered. If both assemblies are brought into the end position predetermined for ultrasonic welding, a connection region results, in which the surface of one assembly is opposite the surface of the other assembly.
  • the above-mentioned ribs / grooves and Pm / bore structures are advantageously formed on this connection surface.
  • one of the assemblies can comprise elevation structures which, for example, in the predetermined end position, encompass the opening of the first assembly in a closed line. In this way, a tight, for example water or dust-tight, covering of the opening in the first assembly can be achieved after the ultrasonic welding.
  • the second assembly can comprise a transparent area at least in the area of the opening of the first assembly (in the predetermined end position).
  • a recess can be formed in a first assembly that can be connected to a second assembly by means of ultrasonic welding, which recess is at least partially complementary to the external shape of the second assembly.
  • the positioning accuracy of the two assemblies can be further increased before ultrasonic welding, since the second assembly is at least partially inserted into a correspondingly shaped recess in the first assembly when it is brought into the predetermined final position.
  • a housing part according to the invention for example, as an upper shell for a mobile telecommunications terminal, in particular a mobile phone.
  • a first assembly for this upper shell can be a housing part which includes openings for keyboard keys and display unit
  • the second assembly can be a window assembly which comprises a transparent area and with which one or more openings, in particular those for the display unit, in the first assembly be covered.
  • mobile telecommunications equipment especially cell phones, however Personal Digital Assistants or other data processing equipment capable of mobile communications are often carried along with their users, they are exposed to particularly large loads. Robust, resilient housings are therefore essential for these devices.
  • Such housings or housing parts can advantageously be produced in the assemblies of these housings by the above-mentioned methods by means of ultrasonic welding using pins / bore and rib / groove structures. Since such devices are consumer devices that also in the middle and lower
  • the above-mentioned ultrasonic welding process using pins / bores and ribs / grooves offers the advantage over, for example, an adhesive process that the assembly step of applying the adhesive can be saved. Furthermore, the use of the Pm / bore and rib / groove connection ensures a high positioning accuracy when bringing the assemblies together in the predetermined final position before ultrasonic welding, which leads to a simple but high-quality assembly process in the production of such top shells.
  • a set for producing a housing part or housing which comprises a first assembly and a second assembly, the first and the second assembly being in a predetermined end position by means of welding Ultrasonically connectable, and wherein the housing part comprises at least one pin in one of the assemblies and at least one complementarily shaped hole in the other module opposite the predetermined end position of the at least one pin, and wherein the housing part further comprises at least one rib in one Assemblies and at least one complementarily shaped, in the predetermined end position of the at least one rib opposite groove in the other assembly.
  • a method for producing a housing part or housing which comprises a first and a second assembly, in which the first and the second assembly in a predetermined end position by ultrasonic welding are connected, and wherein the housing part comprises at least one pin in one of the modules and at least one complementarily shaped bore in the predetermined end position opposite the at least one pin in the other of the modules, and wherein the housing part further comprises at least one rib in one of the modules and at least a complementarily shaped groove in the predetermined end position of the at least one rib in the other of the assemblies.
  • the present invention further comprises an ultrasonic welding system for producing a housing or housing part (10) according to the method described in the previous paragraph, which has an ultrasound source, an anvil for holding the housing or housing part, and a sonotrode for coupling the ultrasound into the housing or the housing part, the sonotrode being designed in such a way that the ultrasonic energy reaches all areas provided for welding by means of ultrasound in a substantially uniform manner.
  • the outline of the surface of the sonotrode which is in contact with the housing or housing part during the ultrasonic welding advantageously corresponds to the outline of the region of the housing or housing part which is ultrasonically welded by the method described in the preceding paragraph.
  • This area in which the two assemblies of the housing are welded, can be a simply connected area, for example in the case of a self-contained weld seam or a single weld spot.
  • the welding area can also, for example, in the In the case of several independent welding spots, put together from several non-connected sub-areas.
  • Such a choice of the shape of the contact surface of the sonotrode is advantageous, since in this way the injected sound energy only reaches regions relevant for welding and no sound energy reaches areas not intended for welding.
  • the welding system can thus be operated in an energy-saving manner and, under certain circumstances, undesirable damage to the housing or housing part due to misdirected sound energy is avoided.
  • Figure 1 window assembly and housing assembly of an upper shell according to the invention for a mobile phone in front view
  • Figure 2 window assembly and housing assembly of an upper shell for a mobile phone in rear view
  • FIG. 3a front cover according to the invention for a mobile phone consisting of a window assembly and housing assembly in the assembled state in a front view;
  • FIG. 3b as Figure 3a, only in side view along the section line Ai-Ai;
  • FIG. 3c enlargement of the area Y marked in FIG. 3b;
  • FIG. 5a side view along the section line A-A of Figure 4c;
  • FIG. 5b side view along the section line B-B of Figure 4c;
  • FIG. 1 shows two assemblies 20, 30 according to the invention of an upper shell 10 according to the invention for a mobile telephone.
  • the complete housing of the mobile telephone consists of the upper shell 10 and a lower shell, not shown.
  • the upper shell consists of a housing assembly 20 which has openings 21 for the keys required to operate the mobile telephone. For reasons of clarity, not all of these openings 21 are identified by a reference symbol.
  • the housing assembly 20 has an opening 22 for viewing the display unit. Above and below the opening for the display unit 22, the housing assembly has step-shaped elevations 24. Bores 26 are also shown.
  • FIG. 1 further shows the window assembly 30 of the upper shell 10, which comprises a transparent area 32.
  • window assembly 30 and housing assembly 20 of the mobile phone upper shell 10 are shown in a rear view.
  • the bores 26 in the housing assembly 20 and the free area 22 necessary for viewing the display unit can be seen here.
  • depressions or grooves 34 are shown, which are at least partially complementary to the ribs 24 of the housing assembly 20.
  • pins 36 are shown, which are at least partially complementary to the shape of the bores 26 of the housing assembly 20. For reasons of clarity, not all of the pins 36 shown are marked with a reference symbol here either.
  • rib-shaped elevations 38 so-called energy direction indicators, are formed on the window assembly 30.
  • the housing assembly 20 does not have any correspondingly complementary structures for these energy direction indicators 38.
  • the energy direction indicators 38 form a closed structure with some of the pins 36 and the grooves 34.
  • the pins 34 at least partially penetrate into the bores 26, while the ribs 24 at least partially penetrate into the grooves 34.
  • Parts of the surface of the pins 36 touch with parts of the surfaces of the bores 26 and parts of the surfaces of the ribs 24 with parts of the surfaces of the grooves 34.
  • an ultrasound electrode is used in an ultrasound welding system (not shown) Ultrasound introduced into the assembled assembly.
  • the window assembly 30 and the housing assembly 20 then fuse at least in sections.
  • connection structures 24, 26, 34, 36 leads during the ultrasonic welding process to the window assembly 30 and the housing assembly 20 approaching one another somewhat.
  • the energy direction indicators 38 of the window assembly 30 come into contact with areas of the housing assembly 20, after which these points are also connected. This leads to a further convergence of the housing assembly 20 and the window assembly 30 until a closed connection has been created by the ultrasonic welding. In this way, a dust-proof and at least to a certain extent also waterproof connection between window assembly 30 and housing assembly 20 is created.
  • the large number of pin 36-bore 26 combinations and the ribs 34-groove 24 combinations result in a very firm and versatile connection between the two assemblies .
  • the ribs 34-grooves 24 combinations in particular ensure the basic high strength of the connection, while the large number of pin 36-bore 26 combinations ensure in particular the homogeneity of the connection and the positioning accuracy during assembly.
  • FIG. 3a shows the front view of the assembled upper shell 10.
  • the housing assembly 20 and window assembly 30 can be seen.
  • the openings for the keyboard 21 and the opening for viewing the display unit 22 and the transparent area of the window assembly 32 are shown.
  • the openings 40 in the window assembly 30 can be seen, which are in the area of the loudspeaker of the mobile telephone, and facilitate the passage of sound through the housing.
  • FIG. 3b shows the cross section through the upper shell shown in FIG. 3a along the section line Al-Al. Housing assembly 20 and window assembly 30 can also be seen here.
  • FIG. 3c the area of the upper shell 10 identified by Y in FIG. 3b is shown enlarged.
  • parts of the window assembly 30 and the housing assembly 20 can be seen.
  • the rib 24 running above the window area of the housing assembly 20 can be seen, which is formed by the correspondingly complementary groove 34 of the window assembly 30 is included.
  • FIG. 4a shows the window assembly 30 with the transparent area 32 in a front view.
  • FIG. 4b the window assembly 30 with the transparent area 32 can be seen in a side view.
  • Individual pins 36 located on the circumference of the window assembly 30 can be seen in a side view.
  • FIG. 4c shows the rear view of the window assembly 30 with the transparent area 32.
  • the pins 36 and the grooves 34 can be seen.
  • FIG. 4c also shows how a sonotrode suitable for ultrasonically welding the window assembly 30 to the housing assembly 20 can advantageously look.
  • the area of the welding extends, as can be seen from the course of the energy direction indicators 38, pins 36 and grooves 34, essentially along the edge of the window assembly 30 with a cross connection, which runs from the left to the right edge of the window assembly 30 via the rib 34 above the transparent area 32 passed.
  • the outer contour of the surface of the sonotrode which is in contact with the upper shell thus essentially corresponds to the contour of the window assembly 30.
  • the sonotrode can be designed such that it does not have any direct contact with the upper shell in the region of the window 32 and in the D- has a shaped area with the sound openings 40, which is formed above the window and the groove 34 located there. It is possible that the outline of the contact area of the sonotrode only roughly follows the outline of the window assembly 30 and the window 32 and the D-shaped region above the window 32. It is essential that the shape of the sonotrode is adapted to the geometry of the welding point.
  • FIG. 5a shows the cross section through a pin 36 of the window assembly 30 along the cross section line AA from FIG. 4c
  • the frustoconical shape of the pin 36 can be seen here in particular.
  • FIG. 5b shows the cross section through a pin 36 of the window assembly 30 along the section line B-B from FIG. 4c.
  • This pin 36 also has a frustoconical shape.
  • FIG. 5c shows the region of the window assembly 30 shown with Z in FIG. 4c enlarged.
  • pins 36 connected by means of energy direction indicators 38 can be seen.
  • Two of the sound openings 40 are also shown.
  • the present invention represents the possibility of producing an upper shell or a housing for a mobile telecommunications terminal by means of ultrasonic welding. Furthermore, the possibility of producing a housing or housing part by means of ultrasonic welding is presented, in which the design of individual assemblies of the house or housing part with pins and complementary holes or ribs and complementary grooves a very firm connection can be generated. In addition, the design with such structures leads to a simplified method for producing by means of ultrasonic welding, since the various assemblies can easily be brought into the correct position by welding the structures into one another.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Telephone Set Structure (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

Coque (10) ou boîtier pour un terminal de téléphonie mobile, qui comporte un premier ensemble (30), en particulier un ensemble (30) à fenêtre comportant une zone transparente, et un second ensemble (20), en particulier un ensemble boîtier (20), le premier ensemble (30) et le second ensemble (20) étant reliés ou pouvant être reliés pour soudage ultrasonore.
EP03742864A 2002-02-21 2003-02-19 Boitier ou partie de boitier, procede de fabrication d'un boitier ou d'une partie de boitier, et outil permettant la mise en oeuvre dudit procede Withdrawn EP1477011A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10207289 2002-02-21
DE10207289 2002-02-21
PCT/DE2003/000531 WO2003073729A1 (fr) 2002-02-21 2003-02-19 Boitier ou partie de boitier, procede de fabrication d'un boitier ou d'une partie de boitier, et outil permettant la mise en oeuvre dudit procede

Publications (1)

Publication Number Publication Date
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US (1) US20050089159A1 (fr)
EP (1) EP1477011A1 (fr)
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CN103856583A (zh) * 2012-11-28 2014-06-11 安谷通信技术(深圳)有限公司 一种无缝手机
FR3054400B1 (fr) * 2016-07-25 2018-08-17 Albea Le Treport Recipient, notamment pour un dispositif de protection d'un appareil electronique, et procede de fabrication dudit recipient.
CN109905983B (zh) * 2017-12-11 2021-07-27 青岛胶南海尔洗衣机有限公司 一种电器显示装置的焊接方法

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CN1640099A (zh) 2005-07-13
US20050089159A1 (en) 2005-04-28
WO2003073729A1 (fr) 2003-09-04

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