• 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:
    Device for fixing and connecting an electrical component, in particular a sensor having at least two contact faces which are connected by associated electrical rails. A connecting element (30, 40) connects a contact surface (10, 11) of the component (2) to the corresponding electric rail (15, 16). The first free end (12) has an attachment (33, 43) for the component (2). The fixing (33, 43, 53, 63) makes the electrical connection with the point of contact (10, 11) of the component (2). Its second end (14, 144) is held to the electric rail (15, 16, 55, 65) by being electrically connected thereto.
    公开号:FR3028674A1
    申请号:FR1570074
    申请日:2015-11-17
    公开日:2016-05-20
    发明作者:Matthias Ludwig；Kurle Juergen；Conrad Haeussermann
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention relates to a device for fixing and connecting an electrical component, in particular a sensor having at least two contact surfaces that connect to associated electrical rails. The invention also relates to a method of producing such a device. STATE OF THE ART It is known to use a circuit board for the sensors. This plate is for example filled with the sensor and capacitors. Capacitors increase electrostatic discharge (ESD) safety. The thus-equipped circuit board constitutes an electrical component or sensor usually electromechanically contacted in a sensor material housing by a press-in technique. Next, the plastic housing of the sensor is sealed with a plastic cover by laser welding (LDS welding). As an alternative method of connection, complicated welding can still be used as an electromechanical link and this also results in a high mechanical load on the circuit board or the electrical component. DESCRIPTION AND ADVANTAGES OF THE INVENTION The subject of the present invention is a device of the type defined above, characterized in that a connecting element connects a contact surface of the component to the corresponding electrical rail, this element having at its first free end, a fastener for the component, the fastener providing the electrical connection with the contact points of the component and its second end being held to the electrical rail being electrically connected thereto. The invention also relates to a method of manufacturing such a device, characterized in that firstly connecting the connecting elements by their second end to the electrical rails and then the component is introduced into the common fixing formed by at least two connecting elements. The device and method according to the invention have the advantage vis-à-vis the state of the art to develop a simple and inexpensive device for fixing and connecting electrical components, requiring fewer separate parts and fewer manufacturing steps. In addition, besides the reduction of manufacturing costs by mass manufacturing, the tolerance ranges are reduced. It is particularly advantageous to use smaller, thinner, and thus more sensitive components in the form of injection-coated LGA (integrated circuit) elements. The method according to the invention ensures that even with mass production, the device always meets the strict tolerances of the component in its fixation.
    [0002] The attachment at the first end of the connecting element in the form of a clamp and / or a fork and / or stirrup, ensures the positioning and fixing of the LGA element. The connecting element has a guaranteed electrical contact of the component by the connection by the clamping contact in the fastener.
    [0003] According to another characteristic, the component is surrounded by a metal cage open at the front side and constituted by the fastenings of at least two connecting elements, which provides a reliable shielding. According to another characteristic, the connecting element is made of several parts in several parts, which allows excellent positioning and fixing of the LGA element. The reliable electrical connection and the shielding of the LGA element as well as the reliable fixing result from the fact that the connecting element is made of spring steel. The electrical connection and the reliable attachment of the LGA element 25 are ensured if the connection of the second end of the connecting element to the electrical rail is by clinching and / or by friction and / or contact welding. Tightening. The reliable electrical connection of the LGA element is achieved with electrical rails having bosses for contacting the contact points of the component. Drawings The present invention will be described in more detail below with the aid of examples of a fastening and connecting device of an electrical component shown in the accompanying drawings, in which: FIG. front view of a device according to the invention for a bipolar component corresponding to a first exemplary embodiment, FIG. 2 is a rear perspective view of the first embodiment, FIG. 3 is a perspective view from below of FIG. first embodiment, FIG. 4 is a perspective front view of the device according to the invention for a bipolar component corresponding to a second embodiment, FIG. 5 is a rear perspective view of the second embodiment, FIG. Figure 6 is a bottom perspective view of the second embodiment, Figure 7 is a front perspective view of the device according to the invention for a component. bipolar corresponding to a third embodiment, and Figure 8 is a top view of the third embodiment. DESCRIPTION OF EMBODIMENTS FIG. 1 is a perspective front view of a device 1 for fixing and connecting an electrical component 2. The component 2 is a sensor or an electronic module such as for example a sensor acceleration used in the automotive field. The sensor typically includes an acceleration chip, an ASIC chip, and passive components all of which are injection coated to form an LGA element or LGA (pellet network). The component 2 (or the circuit LGA 2) is in the form of wafer with in its bipolar embodiment, at least two contact points 10, 11 surrounded by a dashed line on its upper face 4 and on its underside 5. These points 30 contacts are electrically connected by electrical rails 15, 16. The lower face 5 of the LGA element 2 is turned towards the electrical rails 15, 16; the upper face 4 is not turned towards the electrical rails 15, 16. In the exemplary embodiment, the contact points 10, 11 are the upper face 4. The parallel electrical rails 15, 16 are integrated in FIG. a coating 20, for example of plastic; the free segment 3028674 4 21 of the electrical rails 15, 16 protrudes from the end face 22. The electrical rails 15, 16 are part of a non-detailed connector, for example a connector serving to connect the component 2 or sensor acceleration.
    [0004] According to the invention, the fixing and the electrical connection of the LGA element 2 is done with connecting elements, a first connecting element 30 and a second connecting element 40 respectively connecting a contact point 10, 11 of the LGA element 2 to its electrical rail 15, 16.
    [0005] As is shown in more detail in the rear perspective view of the device 1 according to FIG. 2, each connecting element 30, 40 is formed of several segments and comprises a contact segment 31, 41, a connecting segment 32, 42 and a fixing segment 33, 43. The contact segments 31, 41 are oriented in the region 15 of the electrical rails 15, 16 near the coating 20 and come against enlargements 23, 24 of the electrical rails 15, 16 The contact segments 31, 41 have a U-shaped section surrounding in the manner of clips the upper side 17, 18 of the electrical rails 15, 16. The contact segments 31, 41 each join through the connecting segment. 32, 42, on the upper side 17, 18 of the electrical rails 15, 16, the fastening segments 33, 43 shaped clamp or stirrup. The fastening segments 33, 43 generally form the means for holding the LGA element 2 at the first free end 12 of the connecting elements 30, 40. The fastening segment 33 of the first connecting element 30 protrudes towards the top, the upper side 17 of the electrical rail 15 and thus surrounds in the manner of a clamp, a side 8 of the LGA element 2 so that the upper face 4 and the lower face 5 of the LGA element 2 are partially housed in the fixing segment 33. Correspondingly, the side 9 is surrounded by the securing segment 43 of the second connecting element 40. The two securing segments 33, 43 are thus close and completely cover the sides 8 , 9 and practically the upper face 4 and the lower face 5 of the LGA element 2. Overall, the attachment segments 33, 43 constitute a means of fixing the LGA element 2 leaving open the front side 6 and the rear side 7; overall, essentially, there is thus a metal cage surrounding the LGA element 2. It is also conceivable to make fixing segments 33, 43 to also cover the rear side 7 of the LGA element 2. As shown in the bottom perspective view of FIG. 3, the ends 19 of the electrical rails 15, 16 arrive at the front side 6 of the LGA element 2 and the fastening segments 33, 43 of the connecting elements 30. , 40. Funnel elements 25, 26 extend the attachment segments 33, 43 on both sides 8, 9 and on the upper face 4 of the LGA element 2 to thereby simplify the introduction of the LGA element 2 into its fixation at the time of assembly. The holding of the LGA element 2 10 set up is done by clamps; the fixing segments 33, 43 on the upper face 4 also ensure the connection of the contact points 10, 11. To avoid torques that would be applied to the LGA element 2, the clamping connection is made so that the surfaces 15 d support, here the upper sides 17, 18 of the electrical rails 15, 16 are always directly below the clamping contact points. Thus, by respecting this condition, a metal cage is made in several parts. Preferably, the connecting elements 30, 40 are made of an elastic material such as spring steel. The LGA element 2 has two contact points 10, 11, which corresponds to a bipolar embodiment. It is also possible to envisage a multipolar embodiment as is shown in more detail in FIGS. 4, 5 and 6. The LGA element 2 is made as a system in a SIP package with electrical and mechanical contacts. This is also done in the case of a multipolar embodiment. The advantage is to be able to surround as completely as possible the LGA element 2 in a spring steel cage 33, 43 to ensure as much protection as possible by electromagnetic shielding. The electrical connection is made without welding, only by a clamping contact in the fixing segments 33, 43 at the contact points 10, 11. The spring steel cage or the connecting elements 30, 40 are connected by their second end 14 to the electrical rails 15, 16 by an electromechanical link. The electrical rails 15, 16 are for example bronze. The electrical rails 15, 16 form an integral part of a connector for the connection 35 of the LGA element 2.
    [0006] The connection between the elements 30, 40 made of spring steel to the electrical rails 15, 16 made of a bronze alloy constitutes a metal bond of the same type emphasizing their mechanical, electrical, chemical or anticorrosion properties. The electrical and chemical properties are defined mainly by the surface of the sheets used. These may comprise coatings or a layer system as is known in the case of connections. The mechanical stability achieves a durable bond resistant to other operations and constraints in an application with sufficient security.
    [0007] The connection of the spring steel members 30, 40 to the electrical rails 15, 16 usually made of a bronze alloy is on the contact segments 31, 41 preferably by clinching. The contact segments may have, for example, circular apertures 34, 44 for the electrical rails 15, 16. Alternatively, friction welding or clamping engagement may also be used. Due to the growing trend toward miniaturization of electronic components, the bond between metals of the same kind must be as small as possible and therefore traditional assembly methods such as crimping can not be used. by claws or screwing. FIGS. 4 to 6 show a second exemplary embodiment in which the identical components or components of the same function bear the same references as in the first exemplary embodiment. The LGA element 2 shown in plan view in perspective in FIG. 4 is a quadrupole element with four contact surfaces 10, 11, 100, 111 for example in the corners of the LGA element 2 and which come into contact with each other. contact with a connecting element 30, 40, 50, 60. There are thus four electrical rails 15, 16, 55, 65; in pairs there are two outer rails hereinafter referred to as "first rail 15" and "second rail 16" and a pair of two inner rails. The inner electrical rails 55, 65 will be referred to in the following description as "third electric rail 55" and "fourth electric rail 65". The third electrical rail 55 and the fourth electrical rail 65 are in the rectangular-shaped cavity 222 of the front side 22 of the encapsulation 20 surrounding the electrical rails 55, 35 65. Outside the cavity 222, the first and second The electrical rails 15, 16 protrude from the flat front face 22 of the coating 20. Thus, the free ends 19 of the pairs of electrical rails 15, 16 and 55, 65 are laterally offset so as to have a free space 250. in the meantime. This free space receives the LGA element 2 fixed in common by the four connecting elements 30, 40, 50, 60 to the first free ends 12, 122. As shown in more detail, FIG. 6 in a perspective view from below, the front face 6 of the LGA element 2 protrudes from the ends 19 of the electrical rails 15, 16 and ends with its rear side 7 substantially at the ends 19.
    [0008] The embodiment of the four connecting elements corresponds essentially to that of the first embodiment. The first and second connecting elements 30, 40 connect the first and second electrical rails 15, 16 by the contact segments 31, 41 to the contact points 10, 11 to the LGA element 2. Unlike the first embodiment of FIG. In fact, the contact points 10, 11 are closer to the upper face 4 than to the front face 6. In addition, the connecting segments 32, 42 adjacent to the contact segments 31, 41 are not rectilinear but bent. and cover the sides 8, 9 to join in a first zone, the front face 6 or the contact points 10, 11 of the fastening segments 33, 43 20 which thus cover only the front part of the upper face 4 of the element LGA 2. The securing segments 33, 43, enclose and make the contact points 10, 11 by pinching as in the first embodiment, by a form of clamp or stirrup. As shown in more detail in FIG. 6, the lower face fastening segments 33, 43 are wider and then cover about two-thirds of the lower face 5. In addition, the second attachment segment 43 of the second The connecting element 40 is wider than the first attachment segment 33 of the first connecting element 30 on the underside 5. As in the first exemplary embodiment, the securing segments 33, 43 have funnel elements 25. , 26 to improve the fitting to the introduction of the LGA element 2 in the fastening means. A third connecting member 50 and a fourth connecting member 60 connect the third electrical rail 55 and the fourth electrical rail 65 by contact segments 51, 61 at the contact points 100, 111 of the LGA element 2. The contact points 100, 111 are on the upper face 4 closer to the back 7. The connecting segments 52, 62 are straight and their free end 122 comprises fixing segments 53, 63. The Fixing segments 53, 63 are folded and have substantially a gripper or fork shape. The securing segments 53, 63 serve as a stop for the LGA element 2 when it is introduced into the securing segments 33, 43. In the first embodiment, all the contact segments 31, 41, 51, 61 have openings 34, 44, 54, 64 and are connected for example by a through connection to the electrical rails 15, 16, 55, 65 and by an electrical and mechanical connection. To ensure important positioning tolerances for the acceleration sensors, to achieve the device it is advantageous to first connect the connecting elements 30, 40, 50, 60 to the second ends 14, 144 with the electrical rails. 15, 15, 16, 55, 65 and then to introduce the component 2 into the joint fastener made by at least two connecting elements 30, 40, 50, 60. For this, it is necessary that the steel cage to The spring has an open side for introducing the LGA element 2. FIGS. 7 and 8 show a third exemplary embodiment in which the same or the same components have the same references as in the two examples. previous embodiments. As shown in FIG. 7 in a perspective view of the device 1, the electrical rails 15, 16 in contrast to the two previous embodiments are not protruding, but spaced apart by a jig or projection 70 of the front face 22 of the encapsulation 20 of the electrical rails 15, 16; the lower side 27, 28 of the electrical rails 15, 16 bears against the protruding part 70. The LGA element 2 is a bipolar element so that there are two electrical rails 15, 16 in the recess 70 of the coating 20.
    [0009] As shown in the view of FIG. 8, the connection of the LGA element 2 on its lower face 5 with the contact points 10, 11 is made on the bosses 151, 161 of the upper side 17, 18 free of the electrical rails. 15, 16. The bosses 151, 161 of the electrical rails 15, 16 are for example in the form of hemispherical bosses. The LGA element 2 is pressed by a clamp 80 with its points of contact 10, against the reliefs 151, 161 so that the pinch contact makes the electrical connection of the LGA element 2 with the electrical rails 15, 16. The clamp 80 essentially surrounds the upper face 4 of the LGA element 2 and descends from the upper side to the sides 8, 9 away from them by being supported by hook elements 81 against the lower face 71 of the projecting portion 70. The clamp 80 forms a metal cage open front side. As in the preceding examples of embodiment, the clamp 80 is preferably made of spring steel and unlike an electrical and mechanical contact according to the preceding examples of embodiment, here the clamp only ensures the mechanical contact of the LGA element 2. The device according to the invention is suitable for sensors, including acceleration sensors in the automotive field.
    [0010] 15 3028674 10 NOMENCLATURE OF MAIN ELEMENTS 1 Fixing and connecting device 2 Electrical component / LGA element 5 4 Upper side of LGA element 5 Lower side of LGA element 6 Front 7 Back 8, 9 Side of element LGA 10 10, 11 Contact point 12 Free end 14 Second end 15, 16 Electric rail 17, 18 Top side of rail 15 19 Free end of electrical rail pairs 20 Embedding 21 Electrical rail segment 22 End face of coating 23 , 24 Widening 20 25, 26 Funnel element 27, 28 Bottom side of the electrical rail 30 First connecting element 31, 41 Contact segment 32, 42 Connecting segment 25 33, 43 Fixing segment 34, 44 Circular opening Second element of link 50, 60 Connecting element 53, 63 Fixing segment 30 55, 65 Electrical rail 70 Projecting part 71 Bottom side of protruding part 80 Clamp 81 Bottom hook element 35 100 , 111 Contact point 3028674 122 Rectangular cavity 151, 161 Boss 250 Free space 11 5
    权利要求:
    Claims (5)
    [0001]
    CLAIMS 1 °) Device for fixing and connecting an electrical component, in particular a sensor having at least two contact surfaces which connect to associated electrical rails, characterized in that a connecting element (30, 40; 50, 60) connects a respective contact surface (10, 11) of the component (2) to the corresponding electrical rail (15, 16, 55, 65), said element having at its first free end (12, 122) a fastening (33, 43, 53 63) for the component (2), the fastener (33, 43, 53, 63) providing the electrical connection to the contact points (10, 11) of the component (2) and its second end (14, 144). ) being held to the electrical rail (15, 16, 55, 65) by being electrically connected thereto.
    [0002]
    Device according to Claim 1, characterized in that the fastener (33, 43, 53, 63) at the first free end (12, 122) of the connecting element (30, 40, 50, 60) is shaped clamp and / or fork and / or stirrup.
    [0003]
    3) Device according to claim 1, characterized in that the contacting by the clamp of the fastener (33, 43, 53, 63) provides the electrical connection of the component (2) to the connecting element (30, 40, 50, 60).
    [0004]
    4) Device according to claim 1, characterized in that the component (2) is surrounded by a metal cage open front side, formed by the fasteners (33, 43, 53, 63) of at least two connecting elements (30, 40, 50, 60).
    [0005]
    Device according to Claim 1, characterized in that the connecting element (30, 40, 50, 60) consists of a plurality of multi-component parts (31, 32, 33, 41, 42, 43, 51, 52, 53, 60, 61, 62). Device according to claim 1, characterized in that the connection of the second end (14, 144) of the connecting element (30, 40, 50, 60) is via the electrical rails (15; 16; 55; 65) by clinching and / or by friction welding and / or by a clamping contact. 7 °) Device for fixing and connecting an electrical component, in particular a sensor having at least two contact surfaces connected by associated electrical rails, characterized by a connecting element in the form of a clamp ( 80) surrounding the component (2) in the manner of a clamp and pressing against the encapsulation (20) of the electrical rails (15, 16) the component (2) is pressed with its points of contact (10, 11 ) against the electrical rails (15, 16) to achieve the electrical connection. 8 °) Device according to claims 1 and 7, characterized in that the connecting element (30, 40, 50, 60, 80) is spring steel. Device according to Claim 7, characterized in that the electrical rails (15, 16) comprise bosses (151, 161) for making contact with the contact points (10, 11) of the component (2). 10 °) A method of producing a device according to any one of claims 1 to 6, characterized in that firstly connecting the connecting elements (30, 40, 50, 60) by their se- 30 end (14, 144) to the electrical rails (15, 16, 55, 65) and then the component (2) is introduced into the common fastener (33, 43, 53, 63) formed by at least two connecting elements ( 30, 40, 50, 60). Method according to Claim 10, characterized in that the connection of the second ends (14, 144) of at least two connecting elements (33, 43, 53, 63) to the electrical rails (15, 16 , 55, 65) is by clinching and / or friction welding and / or clamping engagement. 5
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    引用文献:
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    法律状态:
    2016-11-24| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-08| PLSC| Publication of the preliminary search report|Effective date: 20170908 |
    2017-11-24| PLFP| Fee payment|Year of fee payment: 3 |
    2019-11-21| PLFP| Fee payment|Year of fee payment: 5 |
    2020-11-19| PLFP| Fee payment|Year of fee payment: 6 |
    2021-11-19| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014223353.4A|DE102014223353A1|2014-11-17|2014-11-17|Device for fastening and contacting an electrical component and method for producing the device|
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