Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
  • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
  • B60T11/16—Master control, e.g. master cylinders
  • B60T11/18—Connection thereof to initiating means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/04—Brake-action initiating means for personal initiation foot actuated
  • B60T7/06—Disposition of pedal
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/20—Control lever and linkage systems
  • Y10T74/20528—Foot operated

Definitions

• the present invention relates to a fastening device in one
• the invention particularly relates to a snap connection with which a push rod, e.g. of braking devices, to an actuating device, e.g. a brake pedal is attached.
• a snap connection in which the pedal has a bearing socket in which the pin-shaped or spherical end of the push rod can be kept almost free of play.
• the bearing socket represents an undercut into which the peg-shaped or spherical end attached to the push rod can be pressed.
• the bearing pan has a funnel-shaped egg guide area and is in turn molded into an insert part which can be snapped into a receiving part of the pedal.
• the articulated connection between the push rod and brake pedal in the actuating device known from EP 0 896 162 AI is produced by a fastening device, the ball head of the push rod being held by two hooks during movements opposite to the actuating direction.
• both hooks are part of an annular plastic insert which in turn can be snapped into an insert part of the pedal and is open on one side, so that the push rod end can be removed through this opening perpendicular to the push rod axis when the insert is not installed.
• Fastening devices in particular of the last-mentioned type, have the disadvantage that if the plastic insert is removed frequently, the lateral snap hooks or their corresponding pedal-side hooks become dull and lose or even break off their hooking property.
• the plastic insert due to its removal opening perpendicular to the push rod axis, does not have the maximum strength that would be desirable even when installed. With a corresponding (lateral) load, it would even be possible for the insert to buckle on the side opposite the opening, which in the worst case can lead to an undesired breakout of the insert part. Also, when the snap hooks are opened or removed unevenly, the insert can be rotated and damaged unintentionally due to the removal opening.
• the invention is based on the object of further improving a fastening device of the type mentioned in the preamble of the claim and, in particular, of designing such that on the one hand there is maximum strength of the device and on the other hand the number of parts is reduced.
• a pedal for a motor vehicle with a mounting bracket which is detachably attached to the pedal and in which a spherical end of a push rod for the transmission of actuating forces can be held in an articulated manner, the interior of the mounting bracket having two pivotable locking lips which function as barbs and which after insertion Drackstange in the Befest Trentsschp fix the spherical end of the push rod in the pedal.
• the mounting bracket is a plastic part with essentially closed side surfaces which are closed off on the pedal side by an end face with an opening for the spherical end of the push rod, the opening having an insertion area for inserting the spherical end of the push rod and a removal area for removing the push rod.
• a keyhole-shaped opening on the pedal side which has a rectangular and an adjoining round area, is advantageous in terms of construction.
• the locking lips are advantageously rectangular and protrude into the insertion area, the rectangular area of the keyhole-shaped opening forms the insertion area and the round area of the opening forms the removal area.
• the mounting bracket In order to keep the mounting bracket stable in the pedal even under tensile force, it has two snap hooks integrated into the side surfaces on opposite side surfaces, which snap into corresponding recesses in the mounting bracket mounting of the pedal and releasably fix the mounting bracket in the pedal.
• the fastening point advantageously has reinforcing ribs in the insertion area which have a beveled funnel shape. As such, they represent an insertion aid that facilitate a non-visual insertion of the push rod into the insertion area and finally into the bearing shell.
• the pedal is made of two components in terms of its material properties, in that it represents a plastic part which is reinforced with metal. Due to the high stability of such a hybrid design of the pedal, it is possible to anchor the fastening bracket directly in the pedal without having to use a previously usual shell as a pedal module. This reduces the number of parts of the actuating device. Furthermore, the mounting bracket of the pedal has a pin which, when the mounting bracket is installed, projects into the removal opening. With its funnel-like shape, it (like the reinforcing ribs) is an insertion aid with the associated advantages.
• the fastening bracket fixes a bearing shell in the fastening bracket receptacle of the pedal, which is advantageously backed with a material or advantageously itself consists of a material which has an elasticity such that, after the spherical end of the push rod has been inserted and locked by the locking lips, this spherical end presses against the locking lips. In this way, the spherical end of the push rod can be fixed in the bearing shell without play.
• FIG. 1 a shows the hybrid brake pedal according to the invention on the push rod side with a snap-in fastening bracket according to the invention without push rod,
• 1b is a perspective view of the fastening pin according to the invention on the push rod side
• FIG. 2b is a pedal-side perspective view of the mounting bracket according to the invention.
• FIG. 3a is a top view of the fastening rod according to the invention.
• 3b is a perspective view of the mounting bracket according to the invention on the push rod side
• 4a is the rear view of the mounting bracket according to the invention
• FIG. 5a shows a sectional view along the line A-A from FIG. 1a through the hybrid brake pedal according to the invention with a snapped-on fastening bracket at the level of the bearing shell and the locking lips with a non-installed push rod,
• 5b shows a cross section through the hybrid brake pedal according to the invention with a snap-in fastening bracket at the height of the bearing shell and the locking lips with a built-in push rod
• FIG. 6a shows a section of a longitudinal section through the hybrid brake pedal according to the invention with a snap-in fastening clip according to the invention at the level of the central reinforcing rib with a non-installed push rod
• 6b shows a section of a longitudinal section through the hybrid brake pedal according to the invention with a snap-in fastening clip according to the invention at the level of the central reinforcing rib with a built-in push rod.
• Fig. La shows the push rod side of the hybrid brake pedal 1 according to the invention with a snap-in fastening bracket 2 according to the invention without a push rod.
• Pedal is rotatably mounted in an axis 12 and can be swiveled by the driver, so that when the push rod is installed in the mounting bracket according to the invention, the swiveling movement of the pedal is converted into an axial movement of the push rod and the brake booster in the front section is thus mechanically activated.
• the term “hybrid” stems from the fact that the actual plastic profile 3 a of the brake pedal, into which the mounting bracket 2 according to the invention is snapped approximately at the middle height of the pedal 1 (see FIG. 5 a: section AA), is reinforced with a metal structure 3 b. So the pedal consists of two different material components.
• the metal structure 3b consists of sheet metal parts (sheet metal pieces) which are usually cast with or in the plastic during the manufacture of the pedal 1.
• the connection of the push rod to the pedal usually takes place at a location which is relatively difficult to access and which is difficult to see.
• the fastening head according to the invention has a central reinforcing rib 8b on the edge of the insertion region 13 and two lateral reinforcing ribs 8a adjacent to the middle reinforcing rib, through which the ball head 10 when the push rod 9 is inserted into the rear part of the fastening shaft (insertion region 13) slides into the bearing shell 5.
• the shape of the Befest Trentsschp 2 and its connection to the pedal 1 is explained in more detail below.
• FIG. 2a shows a top view on the pedal of the fastening head 2 according to the invention.
• FIG. 2b shows a perspective view of the fastening head 2 according to the invention for better understanding.
• the fastening head 2 according to the invention is a plastic part with essentially closed side surfaces 17 which are closed off on the pedal side by an end face 18.
• the end face 18 has an opening 19 with an insertion area 13 for inserting the spherical end 10 of the push rod 9 and a removal area 14 for removing the push rod 9.
• the plastic part has a wedge-shaped extension 16 on one side of said side face 17.
• the opening 19 in the end face 18 is in the form of a keyhole.
• the rear (rectangular) part of the opening 19 forms the lead-in area 13, which laterally has both (also rectangular) locking lips 4 in the interior of the fastening clip, which are elastically deformable - for example when the push rod head is inserted.
• the front circular part of the opening 19 represents the removal area 14 of the fastening head 2.
• the entire mounting bracket 2 is positioned in a contour of the hybrid brake pedal 1 provided for this purpose and is fixed with the aid of two snap hooks 6 integrated laterally in the cylinder wall, which must be pressed in again if the mounting bracket 2 is removed later.
• the bearing shell 5 must first be inserted into a specially provided recess of the pedal 1.
• the bearing shell 5 is fixed in the recess by a rear web 7a and two front webs 7b which protrude from the top of the mounting bracket 2.
• FIG. 3 a shows a top view of the fastening rod 2 according to the invention on the push rod side.
• 3b shows a perspective illustration of the fastening head 2 according to the invention on the push rod side for better understanding.
• the central reinforcing rib 8b and two lateral reinforcing ribs 8a adjacent to the central reinforcing rib 8b can be seen.
• the reinforcing ribs are chamfered in order to facilitate the insertion of the push rod 9, as already described.
• FIG. 4a is the rear view of the fastening bracket 2 according to the invention, in which both snap hooks 6 protrude laterally from the cylinder wall and which ensure that the fastening bracket 2 is fixed in the pedal 1.
• the rear web 7a which fixes the bearing shell 5, can be seen in the lower region.
• Figure 4b a side view of the mounting bracket 2 according to the invention, both webs (rear web 7a and front web 7b) can be seen.
• FIG. 5a shows a cross section through the hybrid brake pedal 1 according to the invention with the fastening head 2 snapped in at the height of the bearing shell 5 and the locking lips 4 with the push rod 9 not installed.
• the push rod 9 is shown on the right-hand side of FIG. 5a.
• the pedal-side end of the push rod 9 is spherical.
• the spherical head 10 (ball head) of the push rod 9 is inserted into the insertion area 13 and pressed against the bearing shell 5.
• the push rod has a constriction 15 between the ball head 10 and the rod 9. This is necessary in order to be able to hold the ball head 10 in the bearing shell 5 with the locking lips 4 in the installed state.
• the hybrid structure according to the invention gives the pedal much greater mechanical stability than in conventional plastic pedals.
• 5b shows the installed state of the push rod 9.
• the push rod 9 is located in the insertion area 13.
• Both locking lips 4 fix the push rod 9 in the area of their constriction 15 in such a way that axial retraction of the ball head 10 and thus the push rod 9 is prevented.
• the bearing shell 5 can either be made of an abrasion-resistant but in particular elastic material or be deposited with a correspondingly elastic material, so that the ball head 10 can be pressed into the bearing shell 5 (and one Preload experience) until the locking lips 4 can lay around its constriction 15. After locking, it is then possible for the push rod 9 to retreat due to the pretension, but only to the extent that it corresponds to the elasticity of the bearing shell 5. In this way, the ball head 10 can be locked without play.
• FIG. 6a shows, in addition to the non-installed push rod 9, the detail of a longitudinal section through the hybrid brake pedal according to the invention with the fastening head 2 snapped in according to the invention at the level of the central reinforcing rib 8b with a non-installed push rod 9.
• the hatched area represents both the plastic area 3 a of the Hybrid brake pedal 1 as well as that of the fastening bracket 2 according to the invention.
• the central part in this view is the locking lip 4 which has a radial phase on the bearing shell side which, in the locked state, lies cuff-like around the constriction 15 of the push rod 9 and ensures a more stable fixation than it does with a straight edge would be the case.
• the locking lip 4 is in the Eiiibuch Club 13, the bearing shell 5 is arranged at the same height and the snap hook 6 can be seen.
• the push rod 9 shown is located outside of the pedal according to FIG. 6a, but is shown at the level of the insertion area 13, specifically in the position in which it is ultimately inserted.
• the reinforcing ribs 8a and 8b have a bevel which, at least on one side of the insertion region 13, brings about a funnel-shaped narrowing.
• This peg 11 is chamfered in a funnel shape and represents a further import aid in that it pushes the push rod 9 into the center of the insertion area 13 forces and thus prevents the ball head 10 from getting caught in the removal area 14 during insertion.
• FIG 6b shows the installed state of the push rod 9 in the mounting bracket 2 according to the invention fixed in the pedal.

Landscapes

• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Mechanical Control Devices (AREA)
• Braking Elements And Transmission Devices (AREA)
• Insertion Pins And Rivets (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=33546650

Family Applications (1)

Country Status (9)

Families Citing this family (15)

Family Cites Families (10)

• 2003
  • 2003-06-24 DE DE10328542A patent/DE10328542B4/de not_active Expired - Fee Related
• 2004
  • 2004-06-23 CN CN200480005044.8A patent/CN1753804A/zh active Pending
  • 2004-06-23 JP JP2006515687A patent/JP2007506595A/ja active Pending
  • 2004-06-23 MX MXPA05007196A patent/MXPA05007196A/es not_active Application Discontinuation
  • 2004-06-23 BR BR0407016-0A patent/BRPI0407016A/pt not_active IP Right Cessation
  • 2004-06-23 WO PCT/DE2004/001311 patent/WO2005002937A1/de not_active Application Discontinuation
  • 2004-06-23 EP EP04738760A patent/EP1648750A1/de not_active Withdrawn
• 2005
  • 2005-05-30 ZA ZA200504396A patent/ZA200504396B/en unknown
  • 2005-07-05 US US11/174,838 patent/US7441478B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events