DE102007038534A1 - Contact component for electrical contacting of two components, particularly fluid assembly, has multiple contact spring elements, which are held from carrier element, and individual contact spring element with contact area - Google Patents

Abstract

The contact component (30) has multiple contact spring elements (31), which are held from a carrier element (37). An individual contact spring element has contact area (35) and axially spaced another contact area (35'). The individual contact spring element is designed as one piece. The former contact area is connected over a spring element directly with the latter contact area.

Description

State of the art

The The invention relates to a contact assembly according to the generic type of independent Patent claim 1 and an associated fluid aggregate according to the Genus of independent claim 10.

A conventional contact assembly for a fluid assembly, which comprises an attachment control device and a fluid block and is used, for example, in an antilock brake system (ABS) or a traction control system (ASR system) or an electronic stability program system (ESP system), is disclosed in US Pat 1a to 1c shown. How out 1a and 1c can be seen, includes the conventional contact assembly 30 for the electrical contacting of a mounted controller 10 with a fluid block 20 several contact spring elements 31 that of a support element 37 are held. The contact spring elements 31 each have a spring arm 32 with an upper contact area 35 and a contact arm 33 with a lower contact area 35 ' on, an axial distance to the first contact area 35 having. The fluid block 20 indicates electrical contact with the attachment control unit 10 first contact surfaces 21 on, and the attached controller 10 points for electrical contact with the fluid block 20 soldering surfaces 11 on. The carrier element 37 the conventional contact assembly 30 has at the side edges in each case a fastening sleeve 36.1 and a guide pin 36.2 on. The contact assembly 30 is by pressing on the mounting sleeves 36.1 on corresponding mounting pins 13 in the area of the soldering surfaces 11 are arranged with the attached device 10 connected. Subsequently, the lower contact areas 35 ' the contact assembly 30 by a soldering over corresponding solder joints 12 with the soldering surfaces 11 of the attachment control unit 10 firmly connected. Then the attachment controller becomes 10 on the fluid block 20 put on and connected to this. By placing the attachment control unit, the contact areas are designed as first contact areas 35 the spring arms 32 on the corresponding contact surfaces 21 of the fluid block 20 applied, whereby the electrical connections between the attachment control unit 10 and the fluid block 20 getting produced. During the placement process, the guide pins facilitate 36.2 , which are inserted into corresponding guide sleeves, not shown, the correct positioning of the attachment control unit 10 ,

Since the contact spring elements 31 with a spring arm 32 can be very stressed during operation, these can only be made of a material with high strength, such as spring steel. A problem with this high-strength thin stainless steel is the shape of the defined contact dome 35 , Also, the contact surface applied by gilding the stainless steel is difficult to manufacture. In addition, a complex soldering process for electrical contacting of the cropping device 10 with the fluid block 20 required.

In the published patent application DE 199 17 941 A1 a brake device for a vehicle brake system with at least one pressure sensor for brake pressure measurement and with a control electronics for measured value evaluation and control signal generation is described. In the brake device described, the control electronics for simplified fully automatic assembly of the braking device is housed in a housing over the at least one pressure sensor housing, and the electrical connection between the pressure sensor and the control electronics is made automatically by means of spring contact pins. The housing is mounted on a hydraulic block of the brake device, in which the at least one pressure sensor is used, so that the spring contact pins are supported at the end face with a defined system pressure at the opposite contact surfaces of the pressure sensor and the control electronics. Here, the spring contact pins are inserted into guides, which are formed in an insulating piece, wherein the spring contact pins each have a contact sleeve with inlaid contact spring and at least one axially displaceable in the contact sleeve plunger, which is acted upon by the contact spring in Ausschieberichtung from the guide sleeve. Since the electrical contact between the pressure sensor and the control electronics is made independently via the contact spring, the costly soldering process can be omitted here. The constructed of contact sleeve, contact spring and plunger spring contact pin is complex and expensive.

Disclosure of the invention

The contact assembly according to the invention with the features of independent claim 1 has the advantage that contact spring elements are each made in one piece, wherein a first contact area is connected via a spring element directly to a second contact area. As a result, an automatic electrical contacting of two modules without expensive soldering process is also possible in an advantageous manner. In addition, the simple design of the contact spring element allows a cost-effective production of the contact assembly according to the invention. The contact spring elements are held by a carrier element, wherein after the assembly of the two assemblies of the first contact area on a corresponding first contact surface of a rests first assembly, and the second contact region rests on a second contact surface of a second assembly. The axial distance between the corresponding first and second contact regions of the contact field element and a contact contact force corresponding thereto adjusts depending on the spring element used.

The Contact assembly according to the invention, for example in a fluid aggregate for electrically contacting a fluid block and an attached device. The fluid block indicates electrical contact with the attachment control unit first contact surfaces, and the attached controller has for electrical contacting with the fluid block second contact surfaces on, wherein the first contact surfaces of the fluid block on the inventive contact assembly with the second Contact surfaces of the attachment controller electrically are connected.

By those listed in the dependent claims Measures and developments are advantageous improvements the contact assembly specified in the independent claim 1 possible.

Especially It is advantageous that the carrier element of the contact assembly designed as a plastic injection molded part, the two Side edges has mechanical fasteners, the with corresponding connecting elements of the second module interact to form a releasable mechanical connection between the contact assembly and the second assembly.

In Embodiment of the contact assembly according to the invention are the mechanical fasteners on the support element each designed as a guide nose, and the corresponding connecting elements The second module are each as a guide rail executed. In addition, the guide lugs in the corresponding guide rails so movably mounted, that the contact assembly is movably guided in a direction axis is. Due to the movable mounting of the contact assembly in the direction the contact surfaces of the assemblies, the contact assembly can center on a middle position so that the opposite Ends of the spring elements are evenly loaded. Alternatively, the mechanical fasteners on the support element in each case as a fastening sleeve are executed, and the corresponding connecting elements The second assembly can each be as a corresponding mounting pin be executed. For connecting the contact module with the second assembly, the mounting sleeves the contact assembly simply on the corresponding mounting pin the second module to be pressed. The fastening sleeves For example, can be pressed onto the mounting pin be that between the corresponding contact areas the contact assembly and the contact surfaces of the second Assembly results in a predetermined contact contact force.

In further embodiment of the contact assembly according to the invention the spring element comprises two symmetrical spring arms, on the one Total spring travel of the spring element is divided, wherein the first Contact area of an upper spring arm and the second contact area a lower spring arm each designed as a gold-plated contact calotte are. The individual spring elements can, for example be combined into a Kontaktfederkamm, in the than Plastic injection molded carrier element is inserted. The individual spring elements of the Kontaktfederkamms are then after the injection process by corresponding Freibohrungen electrically isolated from each other. By the invention Contact assembly with symmetrical spring arms becomes a height tolerance independent allows electrical connection, making large Unevenness of the contact surfaces at a for the electrical connection simultaneously acting contact contact force can be compensated. The customary flatness the contact surfaces is therefore completely sufficient and has unlike traditional contact assemblies not constantly monitored. Because of the suspension travel the spring element is divided into two symmetrical spring arms, can the voltages in the spring arms in advantageous Way to be reduced so far that instead of the spring steel other Materials, such as spring bronze, can be used. By using spring bronze as a material for the spring elements can be designed as a contact dome Contact areas are pronounced clean, resulting in a thin Hard steel spring is difficult. In addition, leaves the spring bronze easier to get in shape. The embodiment The spring elements with two symmetrical spring arms can in particular advantageously with the above-described use of guide tabs and guide rails for movably supporting the contact assembly be combined in the second assembly, as by the movable Storage of the contact assembly in the direction of the contact surfaces the assemblies the contact assembly centered on a center position so that the spring forces occurring under load evenly distributed on the two spring arms can be.

Alternatively, the spring element can be designed as a spiral spring with an upper hook eye and a lower hook eye, wherein a gold-plated arc of the upper hook eye the first Kontaktbe forms rich, and a gold-plated arc of the lower hook eye forms the second contact area. Here, the support member has a bottom pan and a lid, each comprising bores for receiving the individual spring elements, wherein the lower hook lugs are each inserted through a guide slot at the end of the receiving bore in the bottom pan, and wherein the upper hook lugs each by a guide slot at the end the receiving bore are inserted in the lid. The individual spring elements are first supplied to the bottom pan, which is then locked by means of corresponding mechanical fastening elements with the lid. The designed as a spiral spring with the hook eyes spring elements can be produced automatically in a fully automatic winding machine. In addition, no expensive grinding of the coil spring is necessary through the hook loops. Furthermore, the individual spring elements are guided in an advantageous manner by the hook eyes and the corresponding guide slots in each case so that they can not tilt to the side. The use of spring bronze as a material for the spring elements allows advantageously easy to perform surface gilding of the contact areas.

Advantageous, Embodiments of the invention described below as well as those explained above for their better understanding, conventional embodiments are in the Drawings shown. In the drawings, like reference numerals designate Components or elements that perform the same or analog functions.

Brief description of the drawings

1a to 1c show schematic representations of a conventional contact assembly for a fluid assembly.

2a to 2d show schematic representations of a first embodiment of a contact assembly according to the invention for a fluid assembly.

3a to 3c show schematic representations of a second embodiment of a contact assembly according to the invention for a fluid assembly.

embodiments the invention

How out 2a to 2d can be seen, comprises a first embodiment of a contact assembly according to the invention 40 for electrical contacting of a mounted controller 10 ' with the fluid block 20 several contact spring elements 41 that of a support element 47 are held. The difference between the in 1a shown attached cropping device 10 and the attached controller 10 ' according to 2d is that the soldering surfaces 11 of the attachment control unit 10 out 1a in the attached device 10 ' according to 2d are designed as gold-plated contact surfaces. The fluid block 20 is opposite 1b unchanged. The individual contact spring elements 41 are each made in one piece and have a first contact area 45 on, over a spring element 44 directly with a second contact area 45 ' connected is. In the illustrated embodiment, the spring element is a spiral spring 44 with an upper hook eye 42 and a lower hook eye 43 executed. Here is how out 2c it can be seen, a gilt bow of the upper hook eye 42 the first contact area 45 , and a gilt bow of the lower hook eye 43 forms the second contact area 45 ' , How out 2a and 2 B can be seen, has the designed as a plastic injection molded support member 47 a floor pan 47.1 and a lid 47.2 on, each drilling 47.7 . 47.8 for receiving the individual spring elements 44 include. The lower hook eyes 43 are each through a guide slot 47.3 at the end of the mounting hole 47.7 in the floor pan 47.1 inserted, and the upper hook eyes 42 are each through a guide slot 47.4 at the end of the mounting hole 47.8 in the lid 47.2 introduced. When mounting the contact assembly 40 become the individual spring elements 44 first of the floor pan 47.1 supplied, which then via appropriate mechanical fasteners tigungselemente 47.5 . 47.6 with the lid 47.2 is locked. In the illustrated embodiment, the fasteners on the floor pan 47.1 as a mounting pin 47.5 and on the lid 47.2 as mounting sleeves 47.6 executed in which the mounting pins 47.5 lock. In addition, the support element 47 on both side edges mechanical fasteners 46 on, here as mounting sleeves 46 are executed and with corresponding not shown connecting elements of the cropping device 10 ' cooperate to provide a releasable mechanical connection between the contact assembly 40 and the attached controller 10 ' to enable. The connecting elements, not shown, of the attachment control device 10 ' can be analogous to the connection elements of the attachment control unit 10 as a mounting pin 13 be executed, on which the mounting sleeves 46 the contact assembly 40 are so pressed that between the corresponding contact areas 45 ' the contact assembly 40 and the contact surfaces of the attachment controller 10 ' gives a predetermined contact contact force. Here are the gilded arches of the lower hook eyes 43 the second contact areas 45 ' after mounting the contact assembly 40 with the attached controller 10 ' on corresponding contact surfaces of the attachment control unit 10 ' rest. After installing the contact assembly 40 becomes the attachment controller 10 ' on the fluid block 20 put on and connected with this the. By placing the attachment control unit 10 ' become the first contact areas 45 the spring elements 44 on the corresponding contact surfaces 21 of the fluid block 20 applied, whereby the electrical connections between the attachment control unit 10 ' and the fluid block 20 getting produced. By assembling the attachment controller 10 ' with the fluid block 20 becomes the spring element 44 compressed, reducing the axial distance of the upper and lower contact areas 45 and 45 ' reduced and a desired Kontaktauflagekraft be generated. Here are the gilded arches of the upper hook eyes 42 the first contact areas 45 , after connecting the attachment control unit 10 ' with the fluid block 20 on the corresponding first contact surfaces 21 of the fluid block 20 rest.

How out 3a to 3c can be seen, comprises a second embodiment of a contact assembly according to the invention 50 for the electrical contacting of a mounted controller 10 '' with the fluid block 20 analogous to the first embodiment according to 2a to 2d several contact spring elements 51 that of a support element 57 are held. The difference between the in 3a shown attached cropping device 10 '' and the attached controller 10 according to 1a is that the soldering surfaces 11 of the on building control unit 10 out 1a in the attached device 10 '' according to 3a analogous to the attachment control unit 10 ' according to 2d as gold plated contact surfaces 1 1 'are executed. In addition, as a mounting pin 13 executed fasteners of the attachment control unit 10 according to 1a in the attached device 10 '' according to 3a as guide rails 13 ' executed. The fluid block 20 is opposite 1b unchanged. The individual contact spring elements 51 are each made in one piece analogous to the first embodiment and have a first contact area 55 on, over a spring element 54 directly with a second contact area 55 ' connected is. In the illustrated embodiment, the spring element comprises 54 two symmetrical spring arms 52 . 53 , to which a total spring travel of the spring element 54 is split, wherein the first contact area 55 an upper spring arm 52 and the second contact area 55 ' a lower spring arm 53 are each designed as a gold-plated contact calotte. How farther 3a to 3c it can be seen, the individual spring elements 54 combined into a Kontaktfederkamm, which in the designed as a plastic injection molded part carrier 57 is inserted, wherein the individual spring elements 54 of the contact spring comb after the injection process by corresponding free holes 58 be isolated from each other electrically. Analogous to the first exemplary embodiment, the carrier element is designed as a plastic injection-molded part 57 on both side edges mechanical fasteners 56 on that with the corresponding connecting elements 13 ' of the attachment control unit 10 '' cooperate to provide a releasable mechanical connection between the contact assembly 50 and the attached controller 10 '' to enable. In contrast to the first exemplary embodiment, the mechanical connecting elements are on the carrier element 57 each as a guide nose 56 executed, and the corresponding connecting elements of the attached device 10 '' are each as guide rails 13 ' executed. The guide noses 56 are in the corresponding guide rails 13 ' so movably mounted that the contact assembly 50 after inserting the guide lugs 56 in the corresponding guide rails 13 ' is movably guided in a direction axis. After installing the contact assembly 50 into the attachment control unit 10 '' are the second contact areas designed as a contact dome 55 ' on corresponding contact surfaces 11 ' of the attachment control unit 10 '' on. Subsequently, the attachment controller 10 '' on the fluid block 20 put on and connected to this. By placing the attachment control unit 10 '' on the fluid block 20 become the first contact areas 55 the spring elements 54 on the corresponding contact surfaces 21 of the fluid block 20 applied, whereby the electrical connections between the attachment control unit 10 '' and the fluid block 20 getting produced. By assembling the attachment controller 10 '' with the fluid block 20 become the two symmetrical spring arms 52 . 53 the contact assembly 50 compressed so that the axial distance between the lower and upper contact areas 55 ' and 55 the contact spring elements 51 reduced. The spring elements 51 be from the electrical contact surfaces 11 ' of the attachment control unit 10 '' and from the electrical contact surfaces 21 of the fluid block compressed. Because the contact assembly 50 in the direction of the contact surfaces 11 ' and 21 through the guide rails 13 ' and the guide noses 56 is movably mounted, the contact assembly is 50 center on a middle position so that the opposite spring arms 52 . 53 be charged evenly.

The inventive contact assembly for a fluid aggregate allows a cost-effective electrical Contacting a fluid block and an attachment control device, the no-consuming soldering a safe wear-free electrical connection with a good contact quality manufactures.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19917941 A1 [0004]

Claims (10)

Contact assembly for the electrical contacting of two assemblies ( 10 ' . 10 '' . 20 ) with a plurality of contact spring elements ( 41 . 51 ), which is supported by a carrier element ( 47 . 57 ) are held, wherein the individual contact spring elements ( 41 . 51 ) each have a first contact area ( 45 . 55 ) and an axially spaced second contact area ( 45 ' . 55 ' ), wherein after the contacting of the two assemblies ( 10 . 10 ' . 20 ) the first contact area ( 45 . 55 ) on a corresponding first contact surface ( 21 ) of a first assembly ( 20 ), and the second contact area ( 45 ' . 55 ' ) on a second contact surface ( 11 ' ) a second assembly ( 10 . 10 '' ), and wherein the axial distance between corresponding first contact areas ( 45 . 55 ) and second contact areas ( 45 ' . 55 ' ) of the individual contact spring elements ( 41 . 51 ) is changeable in the contacting, characterized in that the individual contact spring elements ( 41 . 51 ) are each made in one piece, wherein the first contact area ( 45 . 55 ) via a spring element ( 44 . 54 ) directly with the second contact area ( 45 ' . 55 ' ) connected is. Contact assembly according to claim 1, characterized in that the carrier element ( 47 . 57 ) is designed as a plastic injection molded part, which at both side edges mechanical fasteners ( 46 . 56 ), which with corresponding connecting elements ( 13 . 13 ' ) of the second module ( 10 ' . 10 '' ) to provide a releasable mechanical connection between the contact assembly ( 40 . 50 ) and the second assembly ( 10 ' . 10 '' ). Contact assembly according to claim 2, characterized in that the mechanical connecting elements on the support element ( 57 ) in each case as guide lugs ( 56 ) are executed, and the corresponding connecting elements of the second module ( 10 ' . 10 '' ) as guide rails ( 13 ' ) are executed, wherein the guide lugs ( 56 ) in the corresponding guide rails ( 13 ' ) are movably mounted so that the contact assembly ( 50 ) is movably guided in a direction axis. Contact assembly according to claim 2, characterized in that the mechanical connecting elements on the support element ( 47 ) in each case as fastening sleeves ( 46 ) are executed, and the corresponding connecting elements of the second module ( 10 ' . 10 '' ) each as a corresponding mounting pin ( 13 ) are executed, wherein the fastening sleeves ( 46 ) on the corresponding mounting pins ( 13 ) are pressed so that between the corresponding contact areas ( 45 ' ) and contact surfaces ( 11 ' ) gives a predetermined contact contact force. Contact assembly according to one of claims 1 to 4, characterized in that the individual spring elements ( 54 ) two symmetrical spring arms ( 52 . 53 ), to which a total spring travel of the corresponding spring element ( 54 ), the first contact area ( 55 ) of an upper spring arm ( 52 ) and the second contact area ( 55 ' ) of a lower spring arm ( 53 ) are each designed as a gold-plated contact calotte. Contact assembly according to claim 5, characterized in that the individual spring elements ( 54 ) are combined to form a contact spring comb, which in the executed as a plastic injection molded part carrier ( 57 ) is inserted, wherein the individual spring elements ( 54 ) of the contact spring comb after the injection process by corresponding free holes ( 58 ) are electrically isolated from each other. Contact assembly according to one of claims 1 to 4, characterized in that the individual spring elements each as a spiral spring ( 44 ) with an upper hook eye ( 42 ) and a lower hook eye ( 43 ), wherein a gold-plated arc of the upper hook eye ( 42 ) the first contact area ( 45 ) and a gilded arch of the lower hook eye ( 43 ) the second contact area ( 45 ' ). Contact assembly according to claim 7, characterized in that the carrier element ( 47 ) a floor pan ( 47.1 ) and a lid ( 47.2 ), the respective bores ( 47.7 . 47.8 ) for receiving the individual spring elements ( 44 ), the lower hook eyes ( 43 ) each by a guide slot ( 47.3 ) at the end of the receiving bore ( 47.7 ) in the floor pan ( 47.1 ) and wherein the upper hook eyes ( 42 ) each by a guide slot ( 47.4 ) at the end of the receiving bore ( 47.8 ) in the lid ( 47.2 ) are introduced, wherein the individual spring elements ( 44 ) first of the floor pan ( 47.1 ) are supplied, which then via corresponding mechanical fasteners ( 47.5 . 47.6 ) with the lid ( 47.2 ) is locked. Contact assembly according to one of claims 1 to 8, characterized in that the individual spring elements ( 44 . 54 ) are each made of spring bronze. Fluid aggregate with a fluid block ( 20 ) and an attachment controller ( 10 ' . 10 '' ), wherein the fluid block ( 20 ) for electrical contact with the attachment controller ( 10 ' . 10 '' ) first contact surfaces ( 21 ) and the attachment controller ( 10 ' . 10 '' ) for electrical contact with the fluid block ( 20 ) second contact surfaces ( 11 ' ), characterized characterized in that the first contact surfaces ( 21 ) of the fluid block ( 20 ) via a contact assembly ( 40 . 50 ) according to one of claims 1 to 9 with the second contact surfaces ( 11 ' ) of the attachment controller ( 10 ' . 10 '' ) are electrically connected.