• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention provides a switch device comprising a shell-shaped housing (1), one or more receiving power receiving parts (34) in the housing (1) of a respective switch circuit (32) and a diaphragm (35) forming part of the housing (1) and arranged as a protective coating in one position immediately over each impact member (34). When depressed, the sleeve membrane (35) is adapted to cooperate with the actuating part (34) so that electrical contact is established or broken. The switch circuits (32) may be arranged on a carrier (31), for example a circuit board, which is retaining supported means (30) in the shell-shaped housing (1) or a body (4) received in the housing. A method for manufacturing a switch device of this kind is also provided. (Fig- 4)
    公开号:SE0950346A1
    申请号:SE0950346
    申请日:2009-05-18
    公开日:2010-11-19
    发明作者:Gunnar Janson
    申请人:Nordhydraulic Ab；
    IPC主号:
    专利说明:

    15 20 25 2 electronics, wherein the switch device is designed to meet both requirements for moisture safety so that water cannot penetrate into electronics accommodated in the housing.
    Said objects of the invention are achieved with a switch device and a method for integrating such a switch device in a housing according to the independent claims.
    The switch device comprises a shell-shaped housing, one or two actuating parts accommodated in the housing belonging to a respective switch circuit and a membrane which forms part of the housing and is arranged as a protective cover in a position immediately above each actuating part. When depressed, the diaphragm is adapted to cooperate with the actuating part so that electrical contact in the switch circuit is established or broken.
    The switch circuits may be arranged on a carrier, for example a circuit board, which is retained by holding means in the shell-shaped housing or in a body received in the housing. Furthermore, the body or casing may comprise a guide for each actuating part so that an actuating part belonging to the respective switch circuit is located in a hole in a corresponding guide of the body.
    By arranging on the outwardly facing side of the diaphragm interfaces which can be felt by a user's fingertip and which separate the influencing parts belonging to the respective switch circuit from each other, a person with the fingertips can distinguish the respective influencing parts from each other.
    The guide belonging to the respective actuating part has a circumferential upper edge which, at least when depressurized, cooperates with the underside of the diaphragm.
    In an embodiment of the invention, the shell-shaped casing comprises a combination of an elastic plastic material and a rigid plastic material and the membrane forms part of the elastic plastic material.
    The carrier preferably consists wholly or partly of a circuit board on which circuit board the switches are arranged and electrically connected so that electrical contact 10 is broken or established when depressing the respective actuating part of the respective switch circuit.
    The holding member comprises in an embodiment of the invention grooves arranged in the housing or body in which the carrier is insertable or snap means in which the carrier can be snapped.
    The process relates to the manufacture of a switch device with integrated housing.
    The switch device comprises one or more actuating parts accommodated in the housing belonging to a respective switch circuit and a diaphragm arranged as a protective coating over each actuating part. The method comprises the steps of: - making a casing wherein the membrane is formed as part of said casing and assigned to interfaces which can be felt by a user's fingertip, - providing a carrier on which carrier the switch circuit is immediately arranged, - arranging the carrier in a retaining manner in the device housing so that an actuating part belonging to the respective switch circuit is in a position immediately below the diaphragm.
    In the manufacture, polymeric materials and some plastic forming techniques are used, for example thermoplastic elastomeric materials and some of the extrusion, blow molding, injection molding or a combination of these.
    The insight underlying the invention is the possibility to regionally design a part of a protective shell-shaped device housing such as a protective membrane for the switch in such a way that it is sensitive with the driver's fingertips and can withstand repeated pressures. The invention is further based on the insight of offering a moisture-proof protection over the electrical parts of the control unit and contributing to a softness in the manipulation of the switches which makes it possible to achieve an effect of the sudden action with respect to electrical contact establishment which is extremely important for achieving adequate tactile communication with the switch. Embodiments of the present invention are defined in the independent claims. Other objects, advantages, and novel features of the invention will become apparent from the detailed description of the invention when taken in conjunction with the accompanying drawings.
    Description of the invention The invention will be described in more detail below in connection with the accompanying drawings, in which Fig. 1 shows a perspective view of a switch device according to the invention integrated in a shell-shaped apparatus housing according to the invention, Fig. 2 shows a side view of the apparatus housing according to Fig. 1 viewed directly from behind Fig. 3 shows a perspective view of parts included in the switch device according to the invention housed in the apparatus housing according to Fig. 3, Fig. 4 shows a schematic cross-sectional view through a portion of a switch device with a part of a circuit board according to Fig. 4, Fig. 5 shows a schematic cross-sectional view through a piece of a tactile membrane included in the switch device according to the invention, Fig. 6 - Fig. 8 shows in perspective views of three different embodiments of the present device integrated in an apparatus housing made by extrusion, blow molding and injection molding, respectively.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS The invention is described in an introductory part with reference to Fig. 1 - Fig. 3, which schematically show embodiments of a switch device integrated in an apparatus housing for an operating unit. Following this introduction, other embodiments of the invention are described in which the switch device is integrated in a housing, but not necessarily for the same application.
    Fig. 1 - Fig. 3 shows an apparatus housing 1 delimited outwards by a meeting upper 2 and lower shell-shaped part 3 and a body 4 accommodated between said parts.
    Said body 4 has the task of serving both as a support between the two shell-shaped parts 2, 3 and as a holder and carrier of electrical components. As best seen in Fig. 2, keypads 10, 14 are grouped as three and four switches or pushbuttons on the upper shell-shaped part 2 respectively. The shell-shaped parts and the body may be made of some plastic material, for example thermoplastic elastomeric material (TPE ), but the invention is not limited to this, even metals, composites and ceramic materials can be used in one or more of your parts.
    Fig. 3 shows both the body 4 and the upper and lower shell-shaped parts 2, 3 in more detail and as can be seen here, the body comprises a framework which, in addition to retaining supporting electrical components, acts as a support against the upper shell-shaped part 2. The body 4 has thus been given a shape which essentially corresponds to the insides of the two shell-shaped parts 2, 3 and thus acts as a load-bearing and bracing between them. In more detail, the frame 4 comprises a shell-shaped dome-like basket part and a horizontally laterally mounted mounting part relative thereto.
    In an embodiment according to the invention, the upper shell-shaped part 2 is made of a material, preferably a plastic material, which is less rigidly bent than the material of both the lower shell-shaped part 3 and said body 4. The upper shell-shaped part 2 is made of some elastic material such as a thermoplastic elastomeric material (TPE) such as polyethylene or the like while the lower shell-shaped part 3 consists of slightly stiffer material such as a urethane plastic, which may be polyurethane. The body 4 is preferably also made of said stiffer material. Each of said shell-shaped parts 2, 3 according to this embodiment can be manufactured by injection molding.
    Fig. 3 schematically illustrates a switch device intended to form an integral part of a shell-shaped apparatus housing e 1 according to the invention.
    The switch device comprises a body 4 with one or more guides 33, an actuating part 34 received in a hole in each guide by a switch circuit 32, a membrane 35 arranged as a protective cover over each actuating part 34, a carrier 31 received in the shell-shaped apparatus housing 1. , on which carrier 31 the switch circuit 32 is arranged.
    The diaphragm 35 forms part of the apparatus housing 1 and the carrier 31 is so retained in the apparatus housing that an actuating part 34 belonging to the respective switch circuit 32 is located in a corresponding guide 33 of the body 4 in a position immediately below the diaphragm. In addition, interfaces are arranged on the outwardly facing side of the diaphragm which can be felt by a user's fingertip and which separate the influencing parts belonging to the respective switch circuit from each other in such a way that a person with the fingertips can distinguish the respective influencing parts from each other. The guide associated with the respective actuating part has a circumferential upper edge which, in use, supports the underside of the membrane in a supportive manner.
    In one embodiment, the actuating parts 34 are slidably guided received in respective guide 33 and the device comprises holding means 30 with which the carrier 31 is so retained in the apparatus housing that an actuating part 34 belonging to the respective switch circuit 32 is located in cooperation with corresponding control 33 of the body 4.
    In an implementation of a switch device according to the present invention, on both the mounting part 24 and the basket part 20 holding means 30 of the snap-lock type and retaining support electronic circuit boards 31 or other type of carrier for the keypads 10,14 can be arranged. On the circuit board 31, manually actuable pushbuttons 32 can be contacted immediately on the circuit board by soldering, the actuation of any of said pushbuttons 32 establishing electrical contact with a respective contact point on the circuit board.
    In an embodiment of the present invention the actuating parts 34 are slidably guided received in respective guide 33 and the device comprises holding means 30 with which the carrier 31 is so retained in the apparatus housing that an actuating part 34 belonging to respective switch circuit 32 in cooperation with corresponding control 33 of the body 4 is located. in a position immediately below the diaphragm 35.
    The upper shell-shaped part 2 of the operating unit 1 can serve both as a housing and a diaphragm via which the switch circuits 32 supported by the body 4 can be actuated. In this embodiment, each diaphragm 35 has been formed as a continuous piece of the upper shell-shaped part 2 and which outwardly facing side of the diaphragm has been given such a shape that it is tactile for each individual switch circuit. More specifically, the membrane has been divided into a number of tactile or tactile membranes, each of which is designed so that it can be distinguished from adjacent membranes and each such membrane can be brought into cooperation with the actuating part 34 of a respective switch circuit 32.
    Following this description of embodiments related to the control unit shown in Fig. 1 - Fig. 3 now follows the description of other embodiments of the present invention.
    The switch device comprises a shell-shaped housing 1 and one or more actuating parts 34 of a respective switch circuit 32 accommodated in the housing 1.
    The diaphragm forms part of the housing 1 and is arranged as a protective cover in a position immediately above each actuating part 34, the diaphragm 35 being depressed when adapted to co-operate with the actuating part 34 so that electrical contact is established or broken.
    The switch circuits 32 may be arranged on a carrier 31, which carrier 31 is retained supported by holding means 30 in the shell-shaped housing 1. As mentioned above, the switch device may also comprise a body 4 accommodated in the housing 1. Alternatively, the body 4 may then comprise holding means 30 with which the carrier 31 is retained in the body 4. The body 4 and the housing 1 are then adapted so that when the housing is arranged on the body 4, the actuating parts are in a position immediately below the diaphragm 35.
    In an embodiment of the invention, the body 4 or housing 1 comprises a guide 33 for each actuating part so that an actuating part 34 belonging to the respective switch 32 is located in a hole in a corresponding guide 33 of the body 4 in a position immediately below the diaphragm.
    By arranging on the outwardly facing side of the membrane interfaces which can be felt by a user's fingertip and which separate the influencing parts belonging to the respective switches from each other in such a way that a person with the fingertips can distinguish the respective influencing parts from each other. 33 has a circumferential upper edge 37 which cooperatively cooperates with the underside of the membrane 35. As mentioned above, the shell-shaped apparatus housing 1 may comprise a combination of an elastic plastic material and a rigid plastic material. In an embodiment of the invention, the membrane 35 forms part of the elastic plastic material.
    As best seen in Fig. 4, each diaphragm 35 is located in the middle of the actuating part 34 of a respective switch circuit 32, whereby the diaphragm can be caused to collapse by depression and thereby to cooperate with said movable impacting part so that electrical contact is established or broken. For this purpose, interfaces are arranged on the outwardly facing side of the membrane which can be felt by a user's fingertip and which separate the influencing parts belonging to the respective switch circuit from each other in such a way that a person with the fingertips can distinguish the respective influencing parts under the membrane from each other. For example, by choosing plastic material with a suitably low degree of stiffness, it can be ensured that each membrane 35 can withstand repeated collapse, ie. repeated inward bending or depressing. In order to further improve the ability of the diaphragm 35 to collapse and cooperate with the actuating part 34 of the switch circuit 32 and not least to facilitate an operator to tactilely locate the respective switch 32, the diaphragm 35 is preferably given a bellows-like annular appearance with annular beads 36 arranged in alternating directions.
    That is, annular beads 36 of alternating convex and concave shape or substantially in the shape of a sinusoidal curve whose curved portions are located radially outside each other, one outside the other. Due to the bellows-like design, the diaphragm 35 has been assigned a certain degree of material excess for increased elasticity, whereby the shape of the sine curve can be varied depending on the desired stroke length and other properties of the tactile diaphragm. In an embodiment of the present invention, which is best seen in Figs. 4 and 5, the tactile membrane 35 has a wall thickness below the wall thickness of the upper shell-shaped part 2 in general. The relatively smaller wall thickness of the membrane 35 is suitably in the range 0.4-1.2 mm, while the upper shell-shaped upper part 2 otherwise suitably has a wall thickness in the range 1.5-2.5 mm. In one embodiment of the invention, the outer annular bead 36 of the membrane 35 is supported by the upper circumferential upper edge 37 of the guide 33, whereby a series or group of membranes 35 can be effectively delimited from each other so that depression of adjacent membranes 35 in a keypad 10, 14 does not interact with each other when pressed.
    Referring to Fig. 4 - Fig. 5, it can be seen that the interface of each membrane 35 may comprise a central portion with a raised body portion 38 optionally with a central recess in which, to give a more exclusive impression and increase the sensitivity. In one embodiment, a cap 40 or button of, for example, a metallic material such as aluminum is accommodated in the raised body part. Said cap 40 has a upper part thickened as a head with a diameter substantially corresponding to the diameter of the raised body part 38 and is fixed in the recess 39 by, for example, gluing.
    In the schematic illustrations and in the description, the switch circuits 32 or switches are preferably presented as pushbuttons, but it should be understood that other types of switches such as toggle switches can also be used. In an embodiment of a switch device according to the invention, the switch circuit 32 and the actuating part 34 consist of two or more electrodes on the carrier 31 and a current-conducting region on the underside of the membrane 35. Upon depressing the membrane 35, the current-conducting region is brought into contact with said electrodes and electrical contact between the electrodes is obtained. When the diaphragm is released, the electrical contact is broken again. In alternative embodiments, a more sophisticated circuit is used where depression leads to retaining electrical contact even if the diaphragm is released. Only when pressed again does the electrical contact break again.
    The current-conducting region on the membrane 35 can be formed, for example, by multi-material techniques.
    Referring to Figs. 6 and 7, the switch device according to the invention is shown integrated in a shell-shaped apparatus housing made by extrusion (Fig. 6) and by blow molding (Fig. 7). The two methods are well known in the art and, as in injection molding, have in common that manufacturing takes place on the basis that a granular starting material of plastic is fed into a screw / cylinder device. The inlet material is pressed through a tool (nozzle) arranged at the front of the device to a profile 50 with the desired cross-sectional shape. The profile 50 is cut to a suitable length and is provided with end ends 51 made by injection molding plastic which, for sealing closure and formation of a moisture-proof outwardly closed apparatus housing 1, are joined to one respective end of the profile by welding. In areas of the mantle surface of the profile 50, perforations 52 or openings are provided, membranes 35 are fitted with associated tactile interfaces and any protective glass which are then joined to the perforated edge by welding to form a moisture-proof outwardly closed casing. Said holes 52 are suitably formed by prestressing machining methods such as milling. By means of groove-shaped depressions arranged on the inside of the profile or heel wall (not shown), holding means 30 are formed in which electronic equipment accommodated in the apparatus housing such as circuit boards 31 and the like can be supported in a retaining manner.
    In the case of the blow molded apparatus housing 1 in Fig. 7, it is suitably formed in a known manner by extruding plastic mass through a tool (nozzle) into a tube or hose 54. The extruded hose 54 is inserted and received in one of the movable mold halves formed. mold space, after which the hose end so received between the mold halves is cut and inflated against the inner walls of the mold space by means of a blow pipe inserted in the hose in a valve-controlled connection with a source of high-pressure air. The compressed air connection is broken and the mold halves are separated from each other to remove the extruded and blow-molded container whose geometric outer shape exactly matches the configuration defined by the inner walls of the mold space is removed from the mold for cooling. As described above, perforated portions 52 or openings are provided on desired portions of the molded body of the molded body which are fitted with membranes 35 with associated tactile interfaces which, for forming a moisture-proof outwardly closed casing, are then joined to the perforated edge by welding. The blow molded apparatus housing lacks retaining means 30 on the inside. Similar to the initially described embodiment shown in Figs. 1-5, a prefabricated body 4 is instead used as a holder and carrier of required electronic components, i.e., the body is provided with both holding means 30 for receiving circuit boards 31 and guides 33 for co-operation. with an actuating part 34 of a respective pushbutton 32 10 15 20 25 30 ll contacted on a circuit board. The diaphragm 35, the body 4 and the included electronics together form a pre-assembled continuous unit which is fitted in the hole making and which, for the formation of a moisture-proof outwardly closed apparatus housing 1, is joined to the hole edge by welding.
    The blow molding process also makes it possible to integrate the membranes with the casing in the same material. Double casting technology also makes it possible to achieve different material compositions in different parts, for example with one material in the membrane and another material in adjacent casing part. This technique is not limited to only two material compositions but for example triple casting can be used to produce combinations of three materials, which can be used to provide a first material in the casing, a second material in the membrane and a third material in a surface layer on the membrane.
    Fig. 8 shows the switch device according to the invention integrated in a shell-shaped apparatus housing 1 manufactured by injection molding a head piece 56 and associated end ends 57, the closure of the unit thus produced taking place by welding. On desired portions of the mantle surface of the profile, perforations 52 or openings are provided in which membranes 35 with associated tactile interfaces and optional protective glass 58 are fitted. To form a moisture-proof outwardly closed casing, the membranes 35 are joined to the perforated edge by welding. Electrical components can be retained in a retaining manner by means of holding means 30 which can optionally be formed on the inside of the injection molded housing, or alternatively supported directly by the body 4, wherein, as described above, said body with electronics and diaphragm forms a coherent unit mountable in the apparatus housing. Membranes and protective glass can also be integrated into the casing through material technology, such as double casting and triple casting. As a result, a casing with integrated membranes and protective glass can be completed from the forming tool.
    It should be understood that the arrangement of the membranes 35 in a moisture-proof manner in the apparatus housings described above can take place in a number of different ways well known per se, when it is desired to combine the different unique properties of two materials. An example of such a well-known and established aterial ermaterial technique is the said stud casting and triple casting. The switch device may comprise thermoplastic elastomeric materials (TPE).
    This type of material is suitable for the manufacturing process due to good formability and the possibility of integrating two or more material compositions, which provides cost efficiency and improved constructions. TPE also provides good properties in use such as elasticity over a wide temperature range, chemical resistance and abrasion resistance. TPE includes subclasses such as thermoplastic urethanes (TPU) and thermoplastic olefins (TPO).
    The present invention is not limited to what is described above and that shown in the drawings, but may be modified and modified in a variety of ways within the scope of the appended claims.
    权利要求:
    Claims (1)
    [1]
    1 0 15 20 25 13 PATENT REQUIREMENTS Switch device comprising a shell-shaped housing (1) and one or more elements (34) accommodated in the housing (1) of a respective switch circuit (32), characterized in that a mern fire (35) forms part of the housing (1) and is arranged as a protective coating in a position immediately above each actuating part (34), the diaphragm being depressed when adapted to co-operate with the actuating part (34) so that electrical contact is established or broken. The switch device according to claim 1, further comprising a carrier (31) retaining the support means (30) in the shell-shaped housing (1), on which carrier (31) said switch circuits (32) are arranged. A switch device according to claim 1, further comprising a body (4) received in the housing (1), a carrier (31), on which carrier (31) said switch circuits (32) are arranged, and holding means (30) with which the carrier (31) is retained supported in the frame (4). Switch device according to claim 3, wherein the body (4) or the housing (1) comprises a guide (33) for each actuating part so that an actuating part (34) belonging to the respective switch (32) is located in a hole in a corresponding guide (33) of the body (4) in a position immediately below the diaphragm. Switch device according to claim 4, wherein the outwardly facing side of the membrane are arranged interfaces which can be felt by a user's fingertip and which separate the influencing parts belonging to the respective switches from each other in such a way that a person with the fingertips can distinguish the respective influencing parts from each other. the respective actuating part belonging to the guide (33) has a circumferential upper edge (37) which cooperatively cooperates with the underside of the diaphragm (35). Switch device according to any one of the preceding claims, wherein the shell-shaped housing (1) comprises a combination of an elastic plastic material and a rigid plastic material and the membrane (35) forms part of the elastic plastic material. A switch device according to any one of claims 2-6, wherein the carrier (31) comprises a circuit board. Switch device according to any one of claims 2-7, wherein the holding means (30) comprises grooves arranged in the housing (1) or the frame (4) in which the carrier (31) is insertable or snap means in which the carrier (31) can be snapped. Switch device according to one of the preceding claims, wherein the membrane (35) has been assigned a certain degree of material excess for each interface surface so that it can be brought to collapse by depression and thereby into interaction with the associated actuating part (34). Switch device according to claim 9, wherein the membrane (35) has been given a bellows-like annular appearance with annular beads (36) arranged in alternating directions, preferably of alternating convex and concave shape. Switch device according to claim 10, wherein the annular beads (36) of the membrane (35) have the shape of a sine wave whose curved parts are located radially outside each other. Switch device according to one of the preceding claims, wherein the membrane (35) in the region of each interface has a wall thickness below the other wall thickness of the membrane. A switch device according to any one of claims 1 to 9, wherein the outermost annular bead (36) of a respective membrane (35) is supported by an upper edge (37) of the guide (33). Switch device according to any one of claims 10-13, wherein the interface of each membrane (35) comprises a central portion with a raised body part (38). A method of manufacturing a switch device comprising a shell-shaped housing (1), the device comprising a shell-shaped housing (1), one or more actuating parts (34) accommodated in the housing (1) of a respective 16 circuit breaker circuit (32), and a membrane (35) arranged as a protective coating over each impact part characterized by the following steps: - a housing (1) is produced, the membrane (35) being formed as part of said housing (1) and being assigned interfaces which can be felt by a user's fingertip, - that a carrier (31) with the switch circuits (32) arranged immediately on the carrier (31) is provided, - that the carrier (31) is arranged in a retaining manner in the housing so that a pivot part (34) belonging to the respective switch (32) ) is in a position immediately below the diaphragm (35). A method according to claim 12, wherein the casing (1) is produced by any of the following plastic forming techniques: extrusion, blow molding, injection molding or a combination thereof, a hole (52) is formed in the casing thus produced and a membrane (35) with associated tactile interfaces fitted and joined to the perforated edge of said perforation (52).
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    同族专利:
    公开号 | 公开日
    WO2010134878A1|2010-11-25|
    SE537288C2|2015-03-24|
    EP2433291A4|2014-05-21|
    CN102484007A|2012-05-30|
    CN102484007B|2014-10-22|
    EP2433291A1|2012-03-28|
    引用文献:
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    DE10225920A1|2002-06-11|2003-11-06|Siemens Ag|Keyboard for equipment, has input keys integrated into a totally enclosing protective foil with each key actuating electrical contacts|
    US7067754B2|2003-10-10|2006-06-27|Key Plastics, Llc|Bezel-button assembly and method|GB201708016D0|2017-05-18|2017-07-05|Control Shell Ltd|Protective barrier for a control panel|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE0950346A|SE537288C2|2009-05-18|2009-05-18|Switching device and method of manufacture thereof|SE0950346A| SE537288C2|2009-05-18|2009-05-18|Switching device and method of manufacture thereof|
    CN201080032671.6A| CN102484007B|2009-05-18|2010-05-18|Electric switching device and method of manufacture|
    PCT/SE2010/050537| WO2010134878A1|2009-05-18|2010-05-18|Electric switching device and method of manufacture|
    EP10778018.1A| EP2433291A4|2009-05-18|2010-05-18|Electric switching device and method of manufacture|
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