Adapter body, adapter unit for a brake application device of a vehicle brake system, and brake application device

Abstract

The invention relates to an adapter body (10) for a brake application device (100) of a vehicle brake system. The adapter body (10) has a first bearing surface (12) which is designed to bear against a bulkhead of a vehicle and a second bearing surface (14) which is designed to bear against the brake application device (100), wherein the first bearing surface (12) and the second bearing surface (14) are at a predetermined distance (A) from one another. The adapter body (10) is provided with receiving means (18) for a portion of at least one fastening bolt (114, 118) for fastening the brake application device (100) to a vehicle.

Description

[0001] The invention relates to an adapter body for a brake application device of a vehicle brake system, and also to an adapter unit having such an adapter body. A brake application device having such an adapter body or such an adapter unit is likewise the subject of the invention.

[0002] Adapter plates for brake application devices are known from the documents EP 2 735 483 A1, JP 2016 124 344 A, and JP 2016 124 355 A. These adapter plates have tensioning bolts which are coupled to the adapter plate in a manner which transmits a tensioning force and are fixedly connected to the vehicle.

[0003] The problem addressed by the invention is to provide an adapter body which has a simple design and on which no tensioning forces act during the assembly and operation of the vehicle.

[0004] According to the invention, this problem is solved by an adapter body having the features of patent claim 1.

[0005] Further advantageous embodiments are specified in the dependent claims.

[0006] The adapter body for a brake application device of a vehicle brake system according to the invention comprises a first bearing surface which is designed to bear against a vehicle's spray wall, and a second bearing surface which is designed to bear against a brake application device. The second bearing surface is at a predetermined distance from the first bearing surface. The adapter body is provided with receiving means for a part of at least one fastening bolt for fastening the brake application device to the vehicle.

[0007] The adapter body according to the application is preferably cup-shaped and has a simple design, which means that additional fastening means for fastening the adapter body to the vehicle can be dispensed with. The adapter body can receive at least a portion of a fastening bolt in its receiving means. The at least one fastening bolt extends through the receiving means of the adapter body, as a result of which the adapter body can be held in a predetermined position between a bulkhead of the vehicle and the brake application device. In order to hold the adapter body in its predetermined position on the vehicle, no additional fastening means or fastening bolts are required via which a tensioning force can be transmitted to the adapter body. Due to the receiving means through which the at least one fastening bolt extends, the adapter body according to the application is not subjected to a tensioning force during assembly of the brake application device and also during operation of the vehicle in the assembled state, since no connection that transmits a tensioning force exists between the fastening bolt and the adapter body or between the adapter body and the vehicle. This means that the adapter body can permanently retain its shape and achieve a long service life.

[0008] The adapter body can be produced by means of an injection molding process. The adapter body is preferably an aluminum injection molding.

[0009] In addition, the receiving means can have an area for receiving a portion of a force input unit of the brake actuation device. The force input unit is coupled to a brake pedal in the vehicle, and the adapter body can receive at least a portion of the force input unit of the brake application device. As a result, both the at least one fastening bolt and the force input unit can extend through the receiving means of the adapter body.

[0010] The receiving means of the adapter body can have at least one opening through which a portion of at least one fastening bolt for fastening the brake application device to the vehicle extends. In addition, the receiving means can comprise a recess through which a portion of a force input unit of the application device extends.

[0011] The adapter body can have a connecting portion. The preferably cylindrical, but alternatively also conical, connecting portion can connect the first bearing surface and the second bearing surface to one another. In addition, the connecting portion can set a predetermined distance between the first bearing surface and the second bearing surface. The first bearing surface and the second bearing surface can extend at least approximately parallel to one another, wherein the connecting portion extends at an angle, preferably at a right angle, to the first bearing surface and the second bearing surface. The first bearing surface can be part of the first bearing portion, and the second bearing surface is part of the second bearing portion.

[0012] The first and second support surfaces can be arranged at opposite ends of the connecting portion. The first support surface can extend preferably radially outwardly from one end of the connecting portion. The connecting portion can enclose the second support surface with its other end. The first support surface can form a circumferential edge around the end of the connecting portion assigned to the first support surface. In contrast to the first support surface, the second support surface can extend within the end of the connecting portion.

[0013] The connecting portion and the second support portion can define a receiving means of the adapter body. The second support surface can form a base of the receiving means. The connecting portion can form a circumferential wall of the receiving means and together with the second support surface forming the base of the receiving means define the receiving means. From the first support surface, the receiving means can extend within the connecting portion up to the second support surface. The contour of the support surfaces as well as the contour of the adapter body can be adapted to the shape of the support surfaces on the brake application device and the vehicle in order to allow a top contact as flat as possible.

[0014] The receiving means can have a first opening for a portion of at least one first fastening bolt for fastening the brake application device to the vehicle to pass through. In addition, the receiving means can exhibit a second opening for a portion of at least one second fastening bolt for fastening the brake application device to the vehicle to pass through. The first opening, the second opening, and the recess can each have a central axis. The central axes of the first opening, the second opening, and the recess can lie in a common plane. The recess can be arranged between the first opening and the second opening.

[0015] In contrast to the first and second openings, the recess for a portion of the force input unit to pass through has a greater diameter. The diameters of the first and second openings can be identical, since the two fastening bolts for fastening the brake application device to the vehicle usually have the same outer diameter.

[0016] The recess in the second support surface can have a conically tapering circumferential wall which is adapted to the outer contour of the force input unit. The inner diameter of the recess can be reduced by the conical circumferential wall. In addition, the circumferential wall of the recess can protrude into the recess and the inner diameter of the recess can be reduced as the circumferential wall of the recess extends further into the receiving means.

[0017] The application further relates to an adapter unit having at least one adapter body designed as described and at least one fastening bolt for fastening the brake application device to the vehicle. The at least one fastening bolt extends through the receiving means of the at least one adapter body. The at least one fastening portion can pass through the adapter body through an opening in the receiving means and then extend through the receiving means of the adapter body.

[0018] The at least one fastening bolt can be fixedly connected to the brake application device at one of its ends. For this purpose, this end can be provided with a thread, through which the fastening bolt can be screwed onto the brake application device. The at least one fastening bolt can be coupled to the vehicle at its other end. For this purpose, the fastening bolt can likewise have a thread at this end, which can be guided through an opening in a vehicle's bulkhead and fastened to the vehicle's bulkhead using a nut. During actuation of the brake pedal, the fastening bolt transmits the force acting on the brake application device to the vehicle. The fastening bolt serves as a tensioning bolt in this case.

[0019] The adapter unit can have at least one nut that interacts with the at least one fastening bolt. The at least one nut can be screwed onto the fastening bolt in order to hold the adapter body on the brake application device. For this purpose, the at least one nut can abut against the second bearing surface or the base of the receiving means of the adapter body.

[0020] In addition, the application relates to a brake application device. The brake application device comprises a force input unit, which can be coupled to a brake pedal of a vehicle, and at least one adapter body or adapter unit, wherein at least one fastening bolt is fixedly connected to the brake application device and extends through a receiving means of the adapter body.

[0021] The brake application device can have a master brake cylinder, to which wheel brakes of the vehicle can be attached. The brake application device can have a brake pressure generation unit. The brake pressure generation unit can be coupled to the master brake cylinder. The brake pressure generation unit can have a brake servo unit for boosting a brake application force exerted by a driver on the brake pedal. The brake servo unit can boost the brake electromagnetically, hydraulically, or pneumatically. The boosted application force is transmitted to the master brake cylinder in order to hydraulically generate a brake pressure corresponding to the application force desired by the driver. The master brake cylinder applies the hydraulic brake pressure to the downstream wheel brakes in order to trigger a braking action. In addition, the brake pressure generation unit can have sensors that detect the application force exerted by the driver on the force input unit via the brake pedal.

[0022] The brake servo unit can for example have an electromechanical brake servo. The electromechanical brake servo can comprise a motor, a control unit, a transmission mechanism, and an application device. The application device can be coupled with the master brake cylinder. The application device can be coupled with the force input unit or the force input member of the force input unit. The brake force applied by the driver on the brake pedal can act on the application device via the force input unit or the force input member coupled with the brake pedal. The boost to be provided by the electromechanical brake servo can depend on the applied force of the driver detected by a sensor, for example, or on a command received from a vehicle dynamics control program. The booster force and the applied force of the driver on the brake pedal are transmitted to the master brake cylinder via the application device. The boost is generated by the electric motor driving the application device and the transmission mechanism. For this purpose, the application device is moved by the electric motor and the transmission mechanism in the direction of the master brake cylinder in order to introduce the boost requested by the driver into the master brake cylinder.

[0023] Alternatively, the brake force requested by the driver via the brake pedal and detected by a sensor can be generated completely by an electromechanical drive unit, for example, having an electric motor and / or a transmission mechanism. The force generated by the drive unit can be transmitted to the master brake cylinder located downstream or to a hydraulic pressure generator interposed therebetween in order to generate the brake pressure required for the brake action on the wheels brakes located downstream. According to this alternative, the master brake cylinder is not coupled with the force input unit during normal operation of the vehicle brakes. Instead, the applied force of the driver on the force input unit via the brake pedal acts on a reaction force simulation mechanism, so that the driver receives the customary response from the brake application device via the simulated reaction force. Such a brake application device is often referred to as a brake-by-wire application device.

[0024] The exemplary embodiments of the adapter body are described in more detail below with the aid of the drawings. In the drawings:

[0025] Figure 1 A perspective view of the adapter body is shown;

[0026] Figure 2 A front view of the adapter body of Figure 1 is shown;

[0027] Figure 3 A side view of the adapter body of Figure 1 is shown;

[0028] Figure 4 A cross-sectional view of the adapter body of Figure 1 is shown;

[0029] Figure 5 A side view of a brake application device is shown, wherein the adapter body is arranged on the brake application device; and

[0030] Figure 6 A perspective view of a brake application device is shown, in which the adapter body is arranged in the brake application device.

[0031] Figure 1 A perspective view of the adapter body 10 is shown. The adapter body 10 has a first bearing surface 12 and a second bearing surface 14 Figure 1 which can only be partially identified in the figure). The first bearing surface 12 and the second bearing surface 14 are connected to each other via a connecting portion 16. The adapter body 10 has a receiving means 18 which is defined by the second bearing surface 14 and the connecting portion 16. The connecting portion 16 forms a wall of the receiving means 18 and the second bearing surface 14 forms a base of the receiving means. The first bearing surface 12 is configured on a flange-like protrusion 20 of a first end region 16a of the connecting portion 16. The second bearing surface 14 is configured on and extends completely within a second end region 16b of the connecting portion 16.

[0032] The first bearing surface 12, which is annular in this case, is designed to abut against a bulkhead of a vehicle and extends at a right angle to the connecting region 16a, in this case radially outwardly, and parallel to the second bearing surface 14. The adapter body 10 is configured overall in a cup or pot design. The outer contour of the adapter body 10 can be adapted to the shape of the bulkhead of the vehicle (not shown) and of the corresponding bearing surfaces of the brake application device 100 (see Figure 5 ). The first bearing surface 12 forms an inner circumferential edge around the connecting portion 16 and at the same time an edge of the receiving means 18 which is configured within the connecting portion.

[0033] Figure 2 A front view of the adapter body 10 with the first bearing surface 12, the second bearing surface 14 and the receiving means 18 is shown. The receiving means 18 is provided with a first opening 22 and a second opening 24. The first opening 22 and the second opening 24 can each receive a fastening bolt 114, 118 (see Figure 6 ) for fastening the brake application device (not shown in Figure 2 ) to the vehicle. The receiving means 18 also has a recess 26 which receives a part of a force input unit 102 (see Figure 6 ) of the brake application device which is not shown. The first opening 22, the second opening 24 and the recess 26 are configured in the second bearing surface 14 which forms the base of the receiving means 18. Figure 2 The inner side 28 of the second bearing surface 14 which forms the base surface of the receiving means 18 is shown in

[0034] The recess 26 has a larger inner diameter than the first opening 22 and the second opening 24. In this case, the inner diameters of the first opening 22 and the second opening 24 are exactly the same. The inner contour of the first annular support surface 12, and therefore the inner contour of the adapter body 10, is adapted to the inner diameters of the openings 22, 24 and the recess 26. The cross-section of the adapter body 10 in the central region where the recess 26 is arranged is larger than the cross-section of the region forming the first opening 22 and the second opening 24.

[0035] The first opening 22, the second opening 24, and the recess 26 each have a central axis M extending along the longitudinal direction of the adapter body 10. 22 M 24 M 26 The central axis M of openings 22 and 24 and recess 26 22 M 24 M 26 Located in a common plane G, which also forms the plane of symmetry of the adapter body 10, the recess 26 is centrally located between the first opening 22 and the second opening 24. Furthermore, the cross-section of the adapter body 10 increases from the region with the opening 22 until it reaches the central axis M of the recess 26. 26 The cross-section of the adapter body 10 reaches its maximum horizontal level at this point. From this point, the cross-section of the adapter body 10 begins to decrease again until the area where the opening 24 is arranged is located.

[0036] Figure 3 A side view of the adapter body 10 is shown. A connecting portion 16 extends between a first support surface 12 and a second support surface 14, defining a predetermined distance A between the two surfaces. The first support surface 12 extends radially outward at a right angle from a first end 16a of the connecting portion 16. The second support surface 14 extends within the connecting portion 16. The second support surface 14 has a design for abutting against a braking application device 100 (see...). Figure 5 The outer sides 30 of the first support surface 12 and the second support surface 14 are thus formed on opposite sides of the adapter body 10 and extend parallel to each other.

[0037] Figure 4A cross-sectional view of the adapter body 10 is shown. The adapter body 10 is configured as a hollow body, i.e. the adapter body 10 is cup- or pot-shaped. The adapter body 10 can be an aluminum injection molded piece. The adapter body 10 has a receiving device 18 delimited by a connecting portion 16 and a second bearing surface 14. The second bearing surface 14, more precisely its inner side 28, thus forms a base of the receiving device 18. Openings 22, 24 and a recess 26 are formed in the second bearing surface 14. The recess 26 has a sloped circumferential wall 32 extending into the receiving device 18. The circumferential wall 32 is adapted to a complementary portion of an outer contour of a force input unit of a brake application device, not shown here. If this portion of the force input unit is received by the recess 26, the circumferential wall 32 can abut against this portion.

[0038] The first bearing surface 12 extends outwardly from an end region 16a of the connecting portion 16. The second bearing surface 14 extends inwardly from a second end region 16b of the connecting portion 16. The first bearing surface 12 and the second bearing surface 14 are at a predetermined distance A from each other. By means of the adapter body 10, a predetermined distance between a bulkhead (not shown) of a vehicle and a brake application device 100 (see Figure 5 ) can be set. An outer side 30 of the second bearing surface 14 is designed to abut against a corresponding bearing surface of the brake application device 100. The first bearing surface 12, which surrounds the receiving device 18, is designed to abut against a corresponding bearing surface of the bulkhead of the vehicle.

[0039] Fastening bolts 114, 118 (see Figure 6 ) for fastening the brake application device to the vehicle can extend through the openings 22, 24. The fastening bolts 114, 118 penetrate the adapter body 10 through the openings 22, 24 and extend through the entire receiving device 18. Figure 4 The same is true for a force input unit 102 of the brake application device, not shown here. The force input unit extends through the recess 26 into the receiving device 18 and through the entire receiving device 18, so that it can be mechanically coupled with a brake pedal of the vehicle.

[0040] Figure 5 A side view of the brake application device 100 is shown, with the adapter body 10 arranged on the brake application device. The brake application device 100 comprises a force input unit 102 and a brake pressure generation unit 104. The brake pressure generation unit 104 is coupled with a master brake cylinder 106. A reservoir 108 for hydraulic fluid is arranged on the master brake cylinder 106, which supplies hydraulic fluid to a brake circuit connected to the master brake cylinder 106.

[0041] The force input unit 102 has a force input member 110 and a bellows 112, which partially surrounds the force input member 110 and seals the force input unit 102. The force input member 110 can be mechanically coupled with a brake pedal. The force input unit 102 extends through the adapter body 10, wherein the force input member 110, together with the bellows 112, protrudes from the adapter body 10.

[0042] In addition, Figure 5 A fastening bolt 114 is shown, which is fixedly connected to the brake application device 100. The fastening bolt 114, together with the adapter body 10, creates an adapter unit 116. The fastening bolt 114 serves to fasten the brake application device 100 to a vehicle (not shown). The adapter body 10 rests with its second bearing surface 14 on the brake application device 100 or the brake pressure generation unit 104. A connecting portion 16 of the adapter body 10 extends from the second bearing surface 14 in the direction of the force introduction member 110. At the end of the connecting portion 16 opposite the second bearing surface 14, the first bearing surface 12 can be seen, which is designed to rest against a bulkhead of the vehicle. Like the force input unit 102, the fastening bolt 114 also extends through the receiving means 18 of the adapter body 10, which are defined by the connecting portion 16 and the bearing surface 14.

[0043] Figure 6 A perspective view of the brake application device 100 is shown, on which the adapter body 10 is arranged. The fastening bolts 114 and 118 and also the force input unit 102 of the brake application device 100 extend in the receiving means 18 of the adapter body 10. The recess 26 in the second bearing surface 14 of the adapter body 10 rests with its circumferential wall 32 on the outer contour of the force input unit 102. The circumferential wall 32 of the recess 26 protrudes axially conically into the receiving means 18. The adapter body 10 rests with the outer side 30 of the second bearing surface 14 on the brake application device 100 or the brake pressure generation unit 104. The fastening bolts 114, 118 and also the force input unit 102 extend through the adapter body 10 within the receiving means 18 of the adapter body 10.

[0044] The adapter unit 116 is provided with nuts 120 and 122, which are screwed on using the fastening bolts 114, 118. Using the nuts 120, 122, the adapter body 10 can be held in its predetermined position on the brake application device 100. To this end, the nuts 120, 122 abut against the inner side 28 of the second bearing surface 14. The nuts 120, 122 press the second bearing surface 14 against the brake application device 100. A washer can be located between the inner side 28 of the bearing surface 14 and the nuts 120, 122.

[0045] The fastening bolts 114, 118 have a thread at their end portions 124, 126. Using this thread, the fastening bolts 114, 118 can be attached to the vehicle's bulkhead. For this purpose, the fastening bolts 114, 118 are inserted through openings in the vehicle's bulkhead (not shown) and the first bearing surface 12 of the adapter body 10 is moved into abutment with the bulkhead. On the side of the bulkhead facing away from the brake application device 100 and the adapter body 10, nuts are screwed onto the threaded end portions 124, 126 of the fastening bolts 114, 118 in order to fasten the brake application device 100 to the vehicle. By tightening these nuts (not shown), a tensioning force is exerted on the fastening bolts 114, 118. The fastening bolts 114, 118 are fixedly and in a tension force-transmitting manner coupled (e.g. screwed) to the brake application device 100 at their ends opposite the end portions 124, 126. The fastening bolts 114, 118 thus serve as tensioning bolts.

[0046] The tensioning force occurring during assembly of the brake application device 100 is not transmitted to the adapter body 10, since the fastening bolts 114, 118 extend through the adapter body 10 and the adapter body 10 is held only in a clamped manner between the brake application device 100 and the vehicle's bulkhead, not shown.

[0047] The brake application device 100 can be actuated by the driver of the vehicle via a brake pedal (not shown). The brake pedal in the vehicle interior is coupled to the force input member 110. The force input member 110 transmits the exerted force exerted by the driver on the brake pedal to the force input unit 102, which in turn actuates the brake pressure generation unit 104. Via the force input member 110 of the brake pedal and the force input unit 102, a pressure is transmitted to the brake application device 100 when the brake is actuated. However, since the brake application device 100 is fastened to the vehicle via the fastening bolts 114, 118, the fastening bolts 114, 118 are subjected to a tensioning force when the brake is applied. Since there is no tension force-transmitting connection between the adapter body 10 and the vehicle and the fastening bolts 114, 118 and the force input unit 102 extend through the receiving means 18 of the adapter body 10, no tensioning force acts on the adapter body 10 during brake application. This means that the adapter body 10 permanently retains its shape and has a longer service life.

Claims

1. An adapter unit (116) for a brake application device (100) of a vehicle braking system, the adapter unit comprising: At least one adapter body (10), each adapter body comprising: A first support surface (12) is designed to abut against the vehicle's bulkhead. A second support surface (14) is designed to abut against the braking application device (100), wherein the first support surface (12) and the second support surface (14) are separated by a predetermined distance (A). The adapter body (10) is provided with a receiving device (18) for a portion of at least one fastening bolt (114, 118) for receiving the brake application device (100). Secure to the vehicle. The second support surface (14) forms the base of the receiving device (18) and has at least one opening (22, 24) through which a portion of the at least one fastening bolt (114, 118) passes, wherein the second support surface (14) has an inner side (28) forming the base surface of the receiving device (18). The adapter body further includes a connecting portion (16) that connects the first support surface (12) and the second support surface (14) to each other and sets the predetermined distance (A) between the first support surface (12) and the second support surface (14). The first support surface (12) and the second support surface (14) are disposed at opposite ends (16a, 16b) of the connecting portion (16). The first support surface (12) extends outward from one end (16a) of the connecting portion (16), and the connecting portion (16) wraps around the second support surface (14) with its other end (16b). The at least one fastening bolt (114, 118) for fastening the brake application device (100) to the vehicle, wherein a portion of the at least one fastening bolt (114, 118) is received in a receiving device (18) of the at least one adapter body (10); At least one nut (120, 122) for tightening onto the at least one fastening bolt (114, 118), wherein the at least one nut (120, 122) abuts against the inner side (28) of the second support surface (14); and At least one second nut is provided on the side of the bulkhead facing away from the brake application device (100) and the adapter body (10), and the at least one second nut is screwed onto the threaded end portion (124, 126) of the at least one fastening bolt (114, 118) to secure the brake application device (100) to the vehicle.

2. The adapter unit as claimed in claim 1, in, The receiving device (18) also has a region for receiving a portion of the force input unit (102) of the braking application device (100).

3. The adapter unit as described in claim 2, in, The recess (26) allows a portion of the force input unit (102) of the brake application device (100) to pass through.

4. The adapter unit as described in any one of claims 1 to 3, in, The connecting portion (16) and the second support surface (14) define the receiving device (18), and the second support surface (14) forms the base of the receiving device (18).

5. The adapter unit as claimed in claim 3, in, The at least one opening (22, 24) and the recess (26) are formed in the second support surface (14).

6. The adapter unit as described in any one of claims 1 to 3, in, The receiving device (18) has a first opening (22) through which a portion of at least one first fastening bolt (114) for fastening the brake application device (100) to the vehicle passes and a second opening through which a portion of at least one second fastening bolt (118) for fastening the brake application device (100) to the vehicle passes.

7. The adapter unit as claimed in claim 6, in, The first opening (22), the second opening (24), and the recess (26) each have a central axis (M). 22 M 24 M 26 The central axis (M) of the first opening (22), the second opening (24), and the recess (26) 22 M 24 M 26 They are located in the same plane (G).

8. A braking application device (100), comprising: A force input unit (102), which can be connected to the vehicle's brake pedal, and The adapter unit (116) as described in any one of claims 1 to 7.

9. The braking application device as described in claim 8, It further includes a braking pressure generating unit (104).

10. The braking application device as claimed in claim 9, It further includes a master brake cylinder (106) that can be connected to the brake pressure generating unit (104).

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