• 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:

    公开号:SE1251374A1
    申请号:SE1251374
    申请日:2012-12-05
    公开日:2014-06-06
    发明作者:Ortwin Schlüter；Rasmus Backman
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    l0 l5 20 25 30 which a deployment of the control unit could lead to serious malfunctions and even breakdowns.
    The control unit is normally destroyed by removing and destroying the microcontroller so that its memory circuits become unusable for use as well as for reading.
    OBJECTS AND MOST IMPORTANT CHARACTERISTICS OF THE INVENTION It is an object of the present invention to provide a device of the kind mentioned in the introduction, which constitutes an improvement of previously known devices in terms of its operation.
    This object is achieved according to the invention in that the housing has an externally visible position marking, which indicates a position of the memory device inside the housing and that, in the area of the position marking, the housing is provided with at least one guide for a hole making tool, operation of the hole making tool placed according to the position marking and controlled by said at least one control is adapted to render the memory device unusable.
    In this way it is achieved that the memory device itself becomes locable from the outside and that in addition means are provided on the housing itself for aligning and guiding a hole-making tool so that when the hole is made it can be guaranteed that the memory device has really been made unusable.
    From the above it should be understood that the object of the invention is to make it impossible to read and use the program and data memory in the control unit. This is referred to here as a "memory device". Normally, this memory device is co-located with a computing unit, which performs calculations, sends control signals, etc., to form a microcontroller, but it is not excluded that the memory device is located at a distance from such a computing unit. Through the position marking it is achieved that an operator is led directly to the place where the drilling tool is to be applied and through said guide (s) for the drilling tool it is achieved that the tool does not move in an undesired manner when drilling towards the housing, especially then, at start of the drilling, the tool is applied to the surface of the housing and the rotation of the tool is initiated. In this case, it is achieved that the hole-making tool makes the hole in the right place and with the right direction without traveling so that it really penetrates the memory device itself.
    By "walking" is meant that the tool, when viewed against a (flat) surface, does not immediately begin to work purely axially but instead moves laterally a larger or smaller piece before it can finally begin to form a hole.
    It is important that control of the tool is ensured because it will not be necessary to use special tools either, but that ordinary drills or the like can be used, which typically have a front almost linear or slightly curved, travel-prone insert, and thus lack a needle-like point-shaped tip.
    Namely, the memory device occupies a relatively small area of the carrier substrate and is as a rule placed at such a distance from a wall of the housing, which is to be penetrated by the hole-making tool, that even a relatively small tool travel laterally when starting a hole-making process, without said guide (s) ), could easily lead to the object being missed and the memory device remaining intact with the problems this could cause as above.
    By the feature "that in the area of the position marking, the housing is provided with at least one guide for a hole-making tool" means that the guide is located in a place indicated by the position marking regardless of whether the position marking itself is e.g. an arrow, which is applied at a certain distance from this place.
    It is also possible with a device according to the invention to easily verify, normally already by control from the outside of the housing, that the control unit has really been rendered unusable, by ocular inspection as well as by control with a sensing stick or the like, to verify that the hole has been drilled deep enough and thus passed a location for the memory device.
    It is preferred that said position marking consists of one or more of the group: color marking (s) on a surface of the housing, surface structure marking (s) on a surface of the housing, depression (s) in a surface of the housing, elevation (s) ) on a surface of the house. A surface structure marking can be a visible ripple, roughening or the like. A depression as well as an elevation can be given the desired shape, such as e.g. an arrow, a cross, a star or an enclosing mark with a shape such as a ring, an oval, a polygon or the like. A position marking can be applied at the place itself where the hole-making tool is to be applied or arrows, lines or the like applied at a distance from this place, which point the operator towards this place.
    The at least one guide consists of one or more of the group: a recess in a surface of the housing, one or more guide elevations on a surface of the housing, a layer of a resilient material applied to a surface of the housing. A depression can be a bore, a dent in a surface of the housing or the like.
    Both a depression and a guiding elevation can derive from the shaping of the housing part and correspond to modifications in a mold part. A guiding ridge may be an annular ace or a number of warts surrounding a site for perforation. It can also be attached to the house after this has been completed in other respects.
    A layer of a resilient material may be a thick tape, an applied plastic or foam layer, a thick layer of paint or the like. This layer may in itself exhibit the position marking but need not do so. In that case, the position marking can be arranged outside the area with the resilient material.
    When applying the tool to the resilient material, a guiding effect is achieved, which prevents migration of the tool tip as above. The resilient material can also have a free surface, preferably centrally, where holes are to be made.
    It is also possible that said guide is arranged between adjacent flange projections on the housing, typically supplemented with transverse ridges between the flange projections.
    It may be possible and sometimes appropriate for said position marking and said guide to be co-located, by which is meant that they may be wholly or partly part of the same element. For example, a ridge and annular guide can be designed as such, e.g. marked with a contrasting color, that it can serve as a position marker.
    Preferably, the housing is made of at least one material from the group: a plastic material, a composite material containing plastic, a metal, a metal alloy. It is of course possible to make one part of the housing of one material and another part of another material.
    The invention also relates to a control unit for a motor vehicle comprising a carrier substrate, on which a memory device is arranged, the control unit comprising a device according to the invention as above. By control unit is meant here the complete control device with a memory device on a carrier substrate enclosed in a housing. The invention also relates to a method for manufacturing a device at a control unit for a motor vehicle, wherein the control unit comprises a housing for a carrier substrate, on which a memory device is arranged.
    The method is characterized in that a position in line with the memory device on the carrier substrate is indicated by applying a position marking to a surface of a housing for accommodating said carrier substrate, and that in the area of the position marking, the housing is provided with at least one guide for a hole making tool.
    Preferably, the position marking is applied by one or more of the group: applying color marking (s) to a surface of the housing, applying surface structure marking (s) to a surface of the housing, applying depression (s) to a surface of the housing, applying of elevation (s) on a surface of the house.
    The position marking and / or the at least one guide can advantageously be applied by a modification in a mold part / a housing forming component, which is provided with a corresponding projection or recess.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to exemplary embodiments and with reference to the accompanying drawings, in which: Fig. 1a shows, in connection with a commercial vehicle, a control unit equipped with a device according to the invention in a plan view, Fig. 1b and 1c shows alternative devices according to the invention, Fig. 2 shows a control unit equipped according to the invention in connection with it being rendered unusable, Fig. 3 shows a simple block diagram of a sequence of a method according to the invention, and Figs. 4a, b, c and d show different controls for a hole making tool.
    DESCRIPTION OF EMBODIMENTS In this text, microcontrollers refer to a calculation unit, which is partly the calculating and pre-programmed unit in a control unit for a motor vehicle, and partly has a memory device including both program memory and data memory. The piercing of such a microcontroller also entails piercing of the memory device, which is why in practice it is the position of the microcontroller that is to be located and indicated.
    Fig. 1a shows, in connection with a commercial vehicle 19, a control unit 1, and in particular a housing 2 with an upper housing part 3, the housing containing a carrier substrate (not shown) in the form of a circuit board for vehicle control, the circuit board carrying a microcontroller, which occupies a large number of microcircuits, a storage medium, etc. The circuit board has conventional circuits for supply, etc. of the microcontroller and will not be described in detail here.
    Said storage medium in the memory device can e.g. consists of someone from the group: ROM (Read-Only Memory), PROM (Programmable Read-Only Memory), EPROM (Erasable PROM), Flash memory, EEPROM (Electrically Erasable PROM), a hard disk drive, etc., and be arranged in the microcontroller or possibly in connection with the calculation unit.
    The calculation unit can consist of e.g. any suitable type of processor or microcomputer, such as a Digital Signal Processor (DSP), or an Application Specific Integrated Circuit (ASIC). l0 l5 20 25 30 The memory device provides the calculation unit with stored program code and / or stored data necessary to be able to perform usual calculations etc.
    The memory device is indicated by dashed lines at 4 showing its position in the plane of the control unit on the circuit board in the housing 2.
    In the exemplary embodiment shown in Fig. 1a, a position marking 5 in the form of two arrows is arranged on the upper housing part 3. These arrows point to and indicate said position in the plane of the memory device 4 and in particular a guide 6 in the form of a depression in a outer surface of the upper housing part 3 of the housing. This depression can be in the form of a smaller bore, a bulge or some other type of recess, which is effected, for example, by providing a mold part for the production of the upper housing part 3 with a corresponding bulge.
    Figs. 1b and 1c show more schematically a first and a second alternative design of a position mark 5 in the form of a cross (in Fig. 1b), in the center of which a guide 6 in the form of a depression is located, respectively in the form of a ring (in Fig. 1c), in the center of which a guide 6 in the form of a recess is located.
    Additional alternative position markings are conceivable in the form of e.g. dots and dashes with different widths and shapes.
    Fig. 2 shows in a perspective view a control unit 1 with a housing 2 and an upper housing part 3, on the upper surface of which a guide 6 in the form of an annular ridge is arranged, in a position, seen in the figure, above a memory device 4, which is arranged on a carrier substrate 7 arranged in the housing 2 in the form of a circuit board. A hole making tool 8 supported by a hand-held drilling machine 9 is directed in the direction of the line L by a user (not shown) normally perpendicular to the surface of the housing and to the guide 6, is started and allowed to drill a hole of a certain depth. In this case, the hole-making tool 8, usually in the form of a metal drill with a helical shape, will penetrate both the upper housing part 3 and the memory device 4, whereby the latter will be enlarged.
    Fig. 3 shows a method sequence according to an embodiment of the invention for manufacturing a device according to the invention, wherein: step 10 indicates the start of the sequence. step 11 indicates that a position of a memory device on a carrier substrate is ascertained. step 12 indicates modification of a mold part to provide a housing part with at least one guide for a hole-making tool in a selected area based on the result in step 10. step 13 indicates that the housing part is formed in the mold part by pressing material into the mold in question. step 14 indicates that the position of the memory device on the carrier substrate is marked by applying a position marking to a surface of the finished housing part. step 15 indicates the appropriate composition of the components and the completion of the sequence.
    Since this sequence is given by way of example only, those skilled in the art will recognize that variations may be permitted within the scope of the appended claims. Thus, the control can be performed e.g. by machining a surface or otherwise as set forth in this specification.
    Fig. 4a shows a guide 16 in the form of a depression, which is suitable for aligning and guiding a hole-making tool along the line L for drilling through the wall of the upper housing part 3 and further through the memory device 4.
    Fig. 4b shows an alternative embodiment, wherein a guide 17 in the form of an annular ridge is arranged around said line L. This guide 17 in the form of an annular ridge can also constitute a position marking.
    Fig. 4c shows a further alternative embodiment of a guide according to the invention, wherein a guide 18 in the form of a layer of a resilient material, such as a synthetic foam material, is arranged in such a way that when pressing a hole-making tool (such as 8 in fig. 2) this will be prevented from walking sideways.
    The tool will instead be controlled so that drilling takes place safely along the line L for passing through the wall of the upper housing part 3 and further through the memory device 4.
    The layer / guide 18 may have position marking (s) in the form of one or more arrows, a ring, etc.
    Fig. 4d shows an alternative embodiment of a guide according to the invention, wherein for the guide, cooling flanges 20 for controlling a hole-making tool are typically used in housings for control units of this type. This can only be done if the heat sinks are placed in a way that is suitable for the purpose. In this case, transverse ridge portions arranged between two adjacent parallel cooling flanges are located at a suitable distance from each other, typically corresponding to the distance between the cooling flanges for limiting a control space, which is intended to guide the hole-making tool along the line L as above. A ridge portion is shown in Fig. 4d and is indicated by 21.
    The invention can be modified within the scope of the claims and, for example, both a position marking and guides can be present on surfaces suitable for the purpose of the control unit housing.
    Thus, both the upper side and the lower side as well as the side edges can be subject to placement of both position markings and guides.
    In order to facilitate drilling perpendicular to a surface of the housing, this can be provided partially with a reflective material in the area where the drilling is to take place, which gives an operator an indication that the tool is held in the intended direction.
    权利要求:
    Claims (11)
    [1]
    Device at a control unit for a motor vehicle, comprising a housing (2) for a carrier substrate (7), on which a memory device (4) is arranged, characterized in that - the housing (2) has a position marking (5) visible from the outside (5). ), which indicates a position of the memory device (4) inside the housing, and - that in the area of the position marking (5), the housing is provided with at least one guide (6, 16, 17, 18) for a hole-making tool (8), wherein, operation of the perforating tool (8) placed according to the position marking (5) and controlled by the at least one guide (6) is suitable for making the memory device (4) unusable.
    [2]
    Device according to claim 1, characterized in that said position marking (5) consists of one or more of the group: color marking (s) on a surface of the housing, surface structure marking (s) on a surface of the housing, recess (s) in a surface of the house, elevation (s) on a surface of the house.
    [3]
    Device according to claim 2, characterized in that said position marking (5) is designed as one of the group: at least one arrow, an enclosing marking, a cross.
    [4]
    Device according to any one of claims 1 - 3, characterized in that said at least one guide (6, 16, 17, 18) consists of one or more of the group: a recess (6, 16) in a surface of the housing, one or more several guiding ridges (17) on a surface of the housing, a layer (18) of a resilient material applied to a surface of the housing. 10 15 20 25 30 13
    [5]
    Device according to any one of claims 1 - 4, characterized in that said guide is arranged between adjacent flange projections on the housing (2).
    [6]
    Device according to any one of claims 1 - 5, characterized in that said position marking (5) and said guide (6, 16, 17, 18) are co-located.
    [7]
    Device according to one of Claims 1 to 6, characterized in that the housing (2) is made of at least one material from the group: a plastic material, a composite material containing plastic, a metal, a metal alloy.
    [8]
    Control unit for a motor vehicle comprising a bar substrate (7), on which a memory device (4) is arranged, characterized in that the control unit comprises a device according to any one of claims 1-7.
    [9]
    Method for manufacturing a device at a control unit for a motor vehicle, the control unit comprising a housing (2) for a bar substrate (7), on which a memory device (4) is arranged, characterized in that - a position of the memory device (4 ) on the carrier substrate is indicated by applying a position mark (5) to a surface of the housing, and - that in the area of the position mark (5), the housing is provided with at least one guide (6, 16, 17, 18) for a hole-making tool.
    [10]
    Method according to claim 9, characterized in that the position marking (5) is applied by one or more of the group: applying color marking (s) to a surface of the housing, applying surface structure marking (s) to a surface of the housing 14, applying of recess (s) in a surface of the housing, application of elevation (s) to a surface of the housing.
    [11]
    11. ll. Method according to claim 9 or 10, characterized in that the position marking (5) and / or the said at least one guide (6, 16, 17) is applied by a modification in a housing forming component.
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    同族专利:
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    引用文献:
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    JP2006007206A|2004-05-20|2006-01-12|Orient Sokki Computer Kk|Recording medium destruction device|
    JP4790258B2|2004-12-01|2011-10-12|矢崎総業株式会社|Removal position display adhesive tape|
    US7937982B2|2007-04-10|2011-05-10|Bby Solutions, Inc.|Hard disk destruction apparatus and method|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251374A|SE536823C2|2012-12-05|2012-12-05|Device and method for making a memory device with a control unit for a motor vehicle unusable|SE1251374A| SE536823C2|2012-12-05|2012-12-05|Device and method for making a memory device with a control unit for a motor vehicle unusable|
    EP13859898.2A| EP2928763B1|2012-12-05|2013-11-20|Device and method for making a memory device at a control unit of a motor vehicle unusable|
    PCT/SE2013/051369| WO2014088489A1|2012-12-05|2013-11-20|Device and method for making a memory device at a control unit of a motor vehicle unusable|
    BR112015013070A| BR112015013070A2|2012-12-05|2013-11-20|device and method for rendering a memory device unusable in a control unit of a motor vehicle|
    KR1020157015942A| KR101741198B1|2012-12-05|2013-11-20|Device and method for making a memory device at a control unit of a motor vehicle unusable|
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