JP2014056514A - Mounting part structure of vehicle pedal bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency of assembly work such as fastening of a nut by suppressing variations in mounting position of a pedal bracket when a mounting bolt is inserted into a mounting hole of a base plate part with enough play so as to permit a dimension error and a mounting error and also by suppressing falling of the pedal bracket from the bolt when a temporary assembly work is performed.SOLUTION: A fall preventive member 58 made of a synthetic resin which has a penetration hole 56 with an inner diameter size smaller than a mounting hole 52 is arranged on a spacer 36, so that variation in the mounting position of a pedal bracket 14 for a vehicle is suppressed by the relative insertion of a stud bolt 44 into the penetration hole 56 of the fall preventive member 58. Further, the posture change of the base plate part 30 and a relative displacement thereof with respect to the stud bolt 44 are restricted in a temporary mounting state in which the stud bolt 44 is inserted into the mounting hole 52, so that the pedal bolt 14 for the vehicle hardly falls from the stud bolt 44, and consequently the mounting work such as fastening nuts and the like can be easily performed.

Description

  The present invention relates to a vehicle pedal bracket, and more particularly to a structure of an attachment portion in which the vehicle pedal bracket is integrally fixed to a dash panel via a spacer.

  A plurality of mounting holes are provided in the plate-shaped base plate portion of the pedal bracket for a vehicle, and a plurality of mounting bolts protruding from the dash panel into the vehicle compartment are respectively inserted through the mounting holes, and nuts are provided at the tip portions protruding from the mounting holes. There is known a mounting structure for a vehicle pedal bracket in which the base plate portion is integrally fixed to the dash panel by being screwed together (see Patent Document 1). In that case, in order to dispose an insulator (sound absorbing material) or the like on the passenger compartment side of the dash panel, a plurality of cylindrical spacers are fixedly provided on the back side of the base plate portion corresponding to the mounting holes. Some parts are fixed away from the dash panel.

  FIG. 17 is a view showing an example of the structure of the mounting portion of such a pedal pedal for a vehicle. A mounting hole 202 is provided in the base plate portion 200, and a cylindrical spacer 204 is welded corresponding to the mounting hole 202. The mounting bolt 208 that protrudes from the dash panel 206 into the vehicle interior is inserted through the spacer 204 and the mounting hole 202, and the nut 210 is screwed to the tip that protrudes from the mounting hole 202. Thus, the base plate portion 200 is integrally fixed to the dash panel 206 with the spacer 204 interposed between the base plate portion 200 and the dash panel 206. The mounting bolt 208 is a stud bolt that is integrally provided on the brake booster 212, and has a function of fixing the brake booster 212 to the dash panel 206, and a plurality of (for example, four) bolts are provided. The dash panel 206 has a plurality of insertion holes 214 corresponding to the mounting bolts 208, and the base plate portion 200 has a plurality of mounting holes 202 and spacers 204 corresponding to the mounting bolts 208. Yes. Then, the base plate part 200 is integrally fixed to the dash panel 206 in a fixed posture by the plurality of mounting bolts 208.

Japanese Patent Laid-Open No. 3-148355

  However, in such a mounting structure of the pedal bracket for a vehicle, the diameter dimension d2 of the insertion hole 214 and the diameter dimension d3 of the mounting hole 202 are set to the mounting bolt 208 in consideration of the dimensional error and assembly error of each part. Therefore, the arrangement position of the base plate part 200 with respect to the dash panel 206 varies, and the position accuracy of the pedal seat (step part) of the operation pedal is impaired. That is, FIG. 17 shows a case where the base plate portion 200 is attached so that the insertion hole 214 and the attachment hole 202 are substantially concentric with the center line S of the attachment bolt 208, but FIG. 18 shows the center O1 of the insertion hole 214. When the center line S of the mounting bolt 208 is shifted downward and the center O2 of the mounting hole 202 is further shifted downward with respect to the center line S, the position of the base plate portion 200 is compared with FIG. Deviation by dimension e. Since the diameter dimensions d2 and d3 are determined based on the maximum value of the dimension error and the assembly error, there is usually play in the mounting position of the base plate part 200 with respect to the dash panel 206, and the mounting position varies depending on the play.

  Further, when the base plate portion 200 is fixed to the dash panel 206, a plurality of mounting bolts 208 protruding from the dash panel 206 are temporarily assembled with the spacers 204 and the mounting holes 202 being inserted into the mounting bolts 208, respectively. The nut 210 needs to be screwed and tightened. However, there is play between the mounting hole 202 and the mounting bolt 208, and there is even more play between the spacer 204 and the mounting bolt 208, so that the base plate portion 200 is operated by the weight of the operation pedal during temporary assembly. There is a possibility of falling from the mounting bolt 208 by tilting to the seat side, and it is necessary to tighten the nut 210 to the mounting bolt 208 while supporting the pedal bracket so that the base plate portion 200 does not fall. It was.

  The present invention has been made against the background of the above circumstances, and the purpose of the present invention is when the mounting bolt is allowed to pass through the mounting hole of the base plate portion so as to allow a dimensional error and an assembling error. In addition, it is possible to improve the assembly workability such as nut tightening by suppressing variations in the mounting position of the pedal bracket and suppressing dropping from the mounting bolt during temporary assembly.

  In order to achieve such an object, the first invention provides (a) a plurality of mounting holes provided in a plate-like base plate portion of a vehicle pedal bracket, and (b) fixing the base plate portion apart from a dash panel. Therefore, a plurality of cylindrical spacers having a diameter larger than that of the mounting hole are fixed to the back surface side of the base plate portion corresponding to the mounting hole, and (c) a plurality of protruding from the dash panel into the vehicle interior. Each of the mounting bolts is inserted through the spacer and the mounting hole with play, and a nut is screwed into a tip portion protruding from the mounting hole, so that the base plate portion is interposed between the dash panel and the spacer. In the mounting structure of a pedal bracket for a vehicle that is integrally fixed to the dash panel in a state of sandwiching (d), (d) At least one is characterized in that an elastically deformable assembly auxiliary member having a through hole having an inner diameter smaller than the mounting hole is disposed inside the cylindrical shape.

  According to a second aspect of the present invention, in the mounting structure for a pedal bracket for a vehicle according to the first aspect, (a) the assembly auxiliary member is disposed on the spacer so that the through hole is concentric with the mounting hole. (B) The inner diameter of the through hole is substantially the same as the outer diameter of the mounting bolt.

  According to a third aspect of the present invention, in the mounting structure for a pedal bracket for a vehicle according to the first or second aspect of the present invention, a groove is provided on the inner peripheral surface of the through hole along the entire length in the axial direction.

  According to a fourth aspect of the present invention, in the mounting structure for a pedal bracket for a vehicle according to any one of the first to third aspects of the invention, (a) the spacer protrudes toward the inner peripheral side so as to allow the mounting bolt to be inserted. Orientation protrusions are provided on the entire circumference, and (b) the assembly auxiliary member is disposed between the inward protrusions and the base plate portion.

  5th invention is the attachment structure of the pedal bracket for vehicles of 4th invention, (a) The said mounting bolt is inserted in the penetration hole provided in the said dash panel with a play, and protrudes in the vehicle interior. On the other hand, (b) the inward projection is provided continuously over the entire circumference of the inner peripheral surface of the tip portion located on the dash panel side of the spacer, and the inner diameter dimension is smaller than the insertion hole. (C) An annular protrusion to be inserted into the insertion hole is provided on the outer end surface of the small diameter step portion so as to protrude in the axial direction of the spacer.

  6th invention is the attachment structure of the pedal bracket for vehicles in any one of 1st invention-5th invention, (a) The said through hole becomes a taper hole part which becomes large diameter as it goes to the opposite side to the said baseplate part. (B) The tapered hole portion is provided with a plurality of annular projections so as to have a sawtooth shape inclined toward the small diameter side in the axial section.

  In such a mounting structure for a pedal bracket for a vehicle, an assembly auxiliary member having a through hole having an inner diameter smaller than the mounting hole is disposed in at least one of the plurality of spacers. By relatively inserting through the through hole of the assembly auxiliary member, variation in the mounting position of the vehicle pedal bracket is suppressed by the amount of play between the mounting bolt and the through hole being small. Also, since the play between the mounting bolt and the through hole is small, the posture change of the base plate part and the relative movement with respect to the mounting bolt in the temporarily assembled state where the mounting bolt is inserted into the mounting hole of the base plate part are restricted, and the assembly work Sometimes it becomes difficult for the vehicle pedal bracket to fall from the mounting bolt, so that assembly work such as nut tightening can be easily performed.

  Here, since the assembly auxiliary member is elastically deformable and is allowed to be deformed to some extent, variation in the mounting position is allowed within the range of play between the mounting bolt and the mounting hole, and the dimensional error and assembly error are considered. The vehicle pedal bracket can be properly attached to the dash panel.

  In the second invention, the assembly auxiliary member is disposed in the spacer so that the through hole is concentric with the mounting hole, and the inner diameter dimension of the through hole is substantially the same as the outer diameter of the mounting bolt. Substantially, the mounting bolt is press-fitted into the through hole, and variations in the mounting position and dropping of the vehicle pedal bracket from the mounting bolt during assembly work are further suppressed appropriately. Also, since the mounting bolt is centered in the direction that is relatively concentric with the mounting hole due to the elasticity of the assembly auxiliary member, it can be assembled without interfering with the mounting hole, and there is a risk of wrinkling due to interference, etc. Is prevented. Even if the inner diameter of the through hole is slightly larger than the outer diameter of the mounting bolt, the mounting bolt is likely to be pressed into the through hole in an eccentric state due to displacement due to dimensional error or assembly error of each part. Positioned.

  In the third invention, since the groove is provided on the inner peripheral surface of the through hole, the inner peripheral portion of the through hole is easily elastically deformed, and when the mounting bolt is relatively inserted into or pressed into the through hole. Work becomes easy.

  In the fourth invention, the spacer is provided with an inward projection, and the assembly auxiliary member is disposed between the inward projection and the base plate portion, so that the assembly auxiliary member is securely held inside the spacer. The In addition, since the inward projections are provided on the entire circumference, the posture change of the pedal bracket for the vehicle is restricted even when the inward projection is engaged with the mounting bolt in the temporarily assembled state, and the falling from the mounting bolt is prevented. It is suppressed.

  The fifth invention is the case where the mounting bolt is inserted into the insertion hole provided in the dash panel with play and protrudes into the vehicle interior, and the entire circumference of the inner peripheral surface of the front end portion of the spacer as the inward projection Since a small-diameter step portion is provided continuously, and an annular protrusion to be inserted into the insertion hole is provided on the outer end surface of the small-diameter step portion, the mounting position of the vehicle pedal bracket with respect to the dash panel is provided. The accuracy is further increased.

  In the sixth invention, since the through hole has a tapered hole portion, when the mounting bolt is relatively inserted or press-fitted into the through hole, it is guided and smoothly inserted into the inner peripheral surface of the tapered hole portion. Thus, workability at the time of insertion or press-fitting is improved. Further, since the plurality of annular protrusions are provided in the tapered hole portion so as to have a sawtooth shape inclined toward the small diameter side in the axial cross section, the annular protrusions are engaged with the mounting bolts in the temporarily assembled state. As a result, it becomes difficult for the assembling auxiliary member to come out of the mounting bolt, and the vehicle pedal bracket is appropriately prevented from dropping from the mounting bolt, and the assembling workability is further improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows an example of the brake pedal apparatus for vehicles for service brakes which has the pedal bracket for vehicles to which this invention was applied, and is the side view which partly cut away. It is the front view which looked at the baseplate part of the pedal bracket for vehicles of Drawing 1 from the driver's seat side. FIG. 3 is an enlarged view of a mounting portion provided with a spacer and fixed to a dash panel by a stud bolt in the vehicle pedal bracket of FIG. 1, and is a cross-sectional view taken along the line III-III in FIG. 2. It is sectional drawing of the IV-IV arrow part in FIG. It is a figure explaining the other Example of this invention, and is sectional drawing equivalent to FIG. It is sectional drawing of the VI-VI arrow part in FIG. It is sectional drawing which shows the fall prevention member (assembly auxiliary member) in FIG. 6 independently. It is a figure explaining another Example of this invention, and is sectional drawing equivalent to FIG. It is a figure explaining another Example of this invention, and is sectional drawing equivalent to FIG. It is a figure explaining another Example of this invention, and is sectional drawing equivalent to FIG. It is a figure explaining another Example of this invention, and is sectional drawing equivalent to FIG. It is a figure explaining another Example of this invention, It is sectional drawing corresponded in FIG. 3, (a) is the state before attaching to a dash panel, (b) is the state attached to the dash panel. It is a figure which shows the assembly | attachment auxiliary member of the Example of FIG. 12 independently, and is the front view seen from the axial direction. It is a front view which shows another example of the assembly | attachment auxiliary member of FIG. It is a figure explaining another Example of this invention, It is sectional drawing corresponded in FIG. 3, (a) is the state before attaching to a dash panel, (b) is the state attached to the dash panel. It is a figure which shows the assembly | attachment auxiliary member of the Example of FIG. 15 independently, and is the front view seen from the axial direction. It is a figure explaining the background art of this invention, and is sectional drawing equivalent to FIG. In FIG. 17, it is sectional drawing which shows the state which the baseplate part shifted | deviated by the dimension e to the downward side of the vehicle.

  The present invention provides a vehicle pedal bracket that is directly fixed to a dash panel by making a hole in an insulator in order to transmit pedal operating force by an operating rod or the like, such as a brake pedal for a service brake or a brake accelerator integrated pedal. It is preferably applied to a pedal bracket. The present invention can also be applied to other vehicle pedal bracket mounting portion structures such as an accelerator pedal, a clutch pedal, and a parking brake pedal.

  The vehicle pedal bracket has a base plate portion integrally fixed to the dash panel. For example, a pedal arm is rotatably disposed on a support portion integrally provided on the base plate portion, and is provided at a lower end portion. The depressed pedal seat is configured to be depressed by the driver. The vehicle pedal bracket is made of, for example, a metal plate material, but a part or all of the pedal bracket can be made of a synthetic resin material. A dash panel is also comprised, for example with a metal plate material.

  The base plate portion is provided with an insertion hole through which an output member such as an operating rod is inserted, and a plurality (for example, four) of spacers and attachment holes are provided around the insertion hole. The output member may be disposed at a position away from the vehicle pedal bracket without providing the insertion hole for inserting the output member in the base plate portion.

  The spacer is made of, for example, a metal material, and is integrally fixed to the back surface (surface on the dash panel side) of the base plate portion by welding such as projection welding or arc welding, press-fitting, or an adhesive. The spacer may be a simple cylindrical member such as a cylindrical shape, but may be provided with an outward flange at one end and fixed so that the flange is in close contact with the base plate portion. This spacer is preferably fixed to the base plate portion so as to be substantially concentric with the mounting hole. A metal pipe can be employed as the spacer, or a spacer made of a material other than metal such as synthetic resin can be used. It is also possible to use spacers such as a rectangular tube shape or a tapered shape whose diameter is gradually changed.

  The mounting holes provided in the base plate are provided with dimensions larger than the diameter of the mounting bolts in consideration of dimensional errors between the mounting holes and assembly errors of the mounting bolts. Is inserted through the mounting hole with play. The insertion hole provided in the dash panel is also provided with a larger diameter dimension than the mounting bolt in the same manner as the mounting hole. The mounting bolt is, for example, a stud bolt provided on a brake booster provided on the engine room side, and is provided so as to protrude through the insertion hole provided in the dash panel into the vehicle interior. The present invention can also be applied to a case where the is integrally fixed to the dash panel.

  For example, the assembly auxiliary member is desirably disposed on all of the plurality of spacers, but may be disposed on only some of the spacers, and may be disposed on at least one of the spacers. The assembly auxiliary member is made of a synthetic resin material or a metal material having a predetermined elasticity. As the synthetic resin material, for example, a thermoplastic resin such as vinyl chloride and elastomer is preferably used, but other synthetic resin materials having a predetermined elasticity can also be used. The assembly auxiliary member is configured in, for example, a cylindrical shape, and is integrally fixed to the inner peripheral surface of the spacer by press-fitting, bonding, or the like, but when the inward projection is provided on the spacer as in the fourth invention Further, it may be disposed so as to be positioned and held between the inward projection and the base plate portion. An annular attachment groove may be provided on the inner peripheral surface of the spacer, and the outer peripheral portion of the disk-shaped assembly auxiliary member may be fitted into the annular groove for attachment. The assembly auxiliary member can be configured with substantially the same length as the spacer, but may be a plate having a relatively short axial dimension. Although the through hole of the assembly auxiliary member may be provided with an inner diameter smaller than at least the mounting hole, it is desirable that it is substantially the same as the outer diameter of the mounting bolt as in the second invention. The outer diameter of the mounting bolt may be substantially the same as the tolerance dimension of the outer diameter of the mounting bolt or about ± 0.5 mm or less in diameter.

  In the second invention, the assembling auxiliary member is disposed on the spacer so that the through hole is concentric with the mounting hole, but it is not necessarily strictly concentric, and is slightly deviated due to a processing error or an assembling error. May be. In implementing the first invention, the through hole and the mounting hole are preferably substantially concentric, but may be positively decentered.

  In the third invention, a plurality of grooves (three or more) are provided on the inner peripheral surface of the through hole so as to form a radial shape at an equiangular interval around the axis of the through hole. Just fine. Further, it may be provided linearly in parallel with the axis of the auxiliary assembly member, or may be provided by being inclined or twisted with respect to the axis. The cross-sectional shape of the groove can be various forms such as a V shape, an arc shape, and a square shape. Alternatively, a plurality of locking claws may be provided so as to protrude toward the center of the through hole, and the tips of the locking claws may be engaged with the mounting bolts. A space between a plurality of locking claws can be regarded as the groove, and a portion between the grooves can be regarded as a locking claw. In carrying out other inventions, a through hole in the inner circumferential surface of the cylinder may be used without providing a groove or a locking claw.

  In the fourth invention, the spacer is provided with an inward projection, and the assembly auxiliary member is disposed between the base plate portion and the inward projection. It is not always necessary to provide an inward projection, for example, when it is integrally fixed to the head. The inward projections are provided on the entire circumference of the inner peripheral surface, but are not necessarily continuous in the circumferential direction and may be divided. Moreover, it is desirable to provide at the front-end | tip part of a spacer like 5th invention, but it is also possible to provide in the intermediate part of an axial direction. The inner diameter dimension of the inward projection is determined to be approximately the same as that of the mounting hole in consideration of the dimensional error and assembly error of each part. When such an inward projection is provided, the assembly auxiliary member is not necessarily integrated with the spacer. It is not necessary to be fixed, and relative movement may be possible.

  In the sixth invention, the through hole of the assembly auxiliary member includes the tapered hole portion, but the entire through hole may be tapered or only a part thereof may be tapered. The large diameter end of the tapered hole is, for example, approximately the same or larger than the mounting hole or insertion hole, and the small diameter end is preferably approximately the same or smaller than the outer diameter of the mounting bolt. Various modes are possible, for example, the diameter may be smaller than the through hole or the insertion hole, and the small diameter end may be larger than the outer diameter of the mounting bolt. In carrying out another invention, a cylindrical through hole having a certain diameter may be used. In the sixth invention, the tapered hole portion is provided with a plurality of annular protrusions so as to have a sawtooth shape inclined toward the small diameter side in the axial cross section. May be provided, or an annular protrusion having a symmetrical cross section may be provided. In addition, a serrated annular protrusion or a symmetrical annular protrusion that is inclined toward the base plate in the axial cross section is provided on the inner peripheral surface of the through hole having a substantially constant diameter without providing a tapered hole. You can also. The tapered hole portion and the annular protrusion are provided on the entire circumference of the inner peripheral surface of the through hole, but are not necessarily continuous in the circumferential direction, and are divided by a plurality of radially provided cutouts or grooves. Also good. The annular protrusion is provided, for example, such that the tip thereof enters and is locked into the thread groove of the mounting bolt.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing an example in which the present invention is applied to a vehicle brake pedal device 10 for a service brake, and is a side view in which a part of the vehicle brake pedal device 10 is cut away. The vehicular brake pedal device 10 includes a vehicular pedal bracket 14 disposed on the dash panel 12 separating the engine room and the vehicular compartment, and a support shaft 16 that is substantially horizontal to the vehicular pedal bracket 14. And a pedal arm 18 pivotally supported around the shaft center. When the pedal seat 20 provided at the lower end of the pedal arm 18 is stepped on by the driver, the operating rod 22 connected to the intermediate position of the pedal arm 18 via the clevis is forward of the vehicle (left side in FIG. 1). Direction) and boosted by the brake booster 24 disposed on the dash panel 12 on the engine room side, and the brake hydraulic pressure for the service brake is generated.

  The vehicle pedal bracket 14 is made of metal and is provided on both the left and right sides of a plate-like base plate portion 30 that is integrally fixed to the dash panel 12 and the surface side of the base plate portion 30, that is, the surface facing the driver's seat. The pedal arm 18 is rotatably disposed on a support shaft 16 that is disposed substantially horizontally across the pair of support portions 32. Further, a cylindrical metal spacer 36 is integrally fixed to the back surface side of the base plate portion 30, that is, the surface facing the dash panel 12 by projection welding or the like, and the base plate portion 30 is fixed to the dash panel 12. The vehicle pedal bracket 14 is integrally fixed to the dash panel 12 while being separated from the dash panel 12. An insulator 40 having flexibility such as felt is attached to the dash panel 12 for soundproofing, but a notch hole 42 is provided in a portion to which the vehicle pedal bracket 14 is fixed, and the spacer 36 is brought into direct contact with the dash panel 12. A stud bolt 44 erected on the brake booster 24 is inserted into the spacer 36 from the dash panel 12 side, and a nut 46 is screwed into a tip portion protruding into the vehicle interior, whereby the base plate portion 30. Is integrally fixed to the dash panel 12 with the spacer 36 sandwiched between it and the dash panel 12.

  The stud bolt 44 corresponds to a mounting bolt, and is erected and assembled in advance at a plurality of locations (four locations in the present embodiment) of the brake booster 24, and also has a function of fixing the brake booster 24 to the dash panel 12. ing. FIG. 2 is a front view of the vehicle pedal bracket 14 when the base plate portion 30 is viewed from the driver's seat side. An insertion hole 50 through which the operating rod 22 is inserted is provided in the center portion of the base plate portion 30. In addition, around the insertion hole 50, four mounting holes 52 are provided corresponding to the stud bolts 44. Four spacers 36 are fixed to correspond to the mounting holes 52 so as to be substantially concentric with the mounting holes 52, and a portion provided with the mounting holes 52 and the spacers 36 is a dash. An attachment portion fixed to the panel 12.

  3 is an enlarged cross-sectional view taken along the line III-III in FIG. 2, that is, an enlarged cross-sectional view showing a mounting portion provided with a spacer 36 and fixed to the dash panel 12 by the stud bolt 44. These are sectional drawings of the IV-IV arrow part in FIG. In these drawings, the mounting hole 52 has a dimension larger than the diameter dimension of the stud bolt 44 in consideration of a dimensional error between the plurality of mounting holes 52 and an assembly error of the plurality of stud bolts 44. The stud bolt 44 is inserted through the mounting hole 52 with play. The stud bolt 44 is inserted into an insertion hole 54 provided in the dash panel 12 and protrudes into the vehicle interior. The insertion hole 54 also takes into account the assembly error of the plurality of stud bolts 44 and the like. The stud bolt 44 is provided with a size larger than the diameter size of the shaft 44, and the stud bolt 44 is inserted through the insertion hole 54 with play. These mounting holes 52 and insertion holes 54 are provided with the same diameter, for example. As a result, the four stud bolts 44 are relatively inserted through the insertion hole 54, the spacer 36, and the mounting hole 52 regardless of the dimensional error or assembly error of each part, and the nut 46 is provided at the tip. By screwing and tightening, the vehicle pedal bracket 14 can be integrally attached to the dash panel 12.

  On the other hand, an annular drop prevention member 58 having a through hole 56 having an inner diameter smaller than that of the mounting hole 52 is disposed inside the spacer 36. The fall prevention member 58 corresponds to an assembly auxiliary member, and is made of a thermoplastic resin such as vinyl chloride or elastomer having a predetermined elasticity, and is integrated with the end of the spacer 36 on the base plate portion 30 side by press fitting or the like. It is fixed. The through hole 56 is a cylindrical hole having a constant diameter. In this embodiment, the through hole 56 has substantially the same diameter as the outer diameter of the stud bolt 44 (± 0.5 mm or less in diameter). It is press-fitted into and inserted. Since the fall prevention member 58 has a plate shape, the stud bolt 44 can be press-fitted into the through hole 56 while being elastically deformed. Such a fall prevention member 58 is fixed in advance to the inner circumferential surface of the spacer 36 by press fitting or the like, and in this state, the spacer 36 is integrally fixed to the back surface of the base plate portion 30 by welding or the like. In the present embodiment, the fall prevention member 58 is disposed on all of the plurality of (four in the embodiment) spacers 36. However, for example, the spacers may be disposed only on the pair of spacers 36 on a diagonal line. It suffices to dispose only one spacer 36, and it is sufficient to dispose at least one spacer 36.

  Since the stud bolt 44 is press-fitted into the through hole 56 in this manner, the posture change of the base plate portion 30 and the stud in the temporarily assembled state in which the stud bolt 44 is relatively inserted into the mounting hole 52 of the base plate portion 30. Since the relative movement with respect to the bolt 44 is restricted and the vehicle pedal bracket 14 does not easily fall from the stud bolt 44 during the assembly work, the assembly work such as nut tightening can be easily performed. Further, since the stud bolt 44 is press-fitted into the through-hole 56, when the dimensional error and the assembly error of each part are small, the mounting hole 52 with respect to the axis S of the stud bolt 44 is shown in FIG. Are fixed so as to be integrated with the dash panel 12. Actually, the fall prevention member 58 is elastically deformed according to the dimensional error and assembly error of each part, and the attachment hole 52 is attached at a position eccentric from the axis S. Even in such a case, since the positioning is performed so as to be as concentric as possible by the elasticity of the fall prevention member 58, variation in the mounting position is suppressed.

  The spacer 36 is also provided with a small-diameter stepped portion 38 having an inner diameter substantially equal to the insertion hole 54 at the tip portion located on the dash panel 12 side so as to have an inward flange shape. When the small-diameter stepped portion 38 is provided at the tip of the spacer 36 in this way, the small-diameter stepped portion 38 becomes a stud in a temporarily assembled state in which the stud bolt 44 is relatively inserted into the mounting hole 52 of the base plate portion 30. The posture change of the base plate part 30 is also restricted by being brought into contact with the outer peripheral surface of the bolt 44. Thus, the vehicle pedal bracket 12 is more appropriately prevented from dropping from the stud bolt 44 due to the posture change of the base plate portion 30 in the temporarily assembled state, and the assembly work such as nut tightening is facilitated. The small diameter step 38 corresponds to an inward projection.

  Thus, in the mounting portion structure of the vehicle pedal bracket 14 of the present embodiment, the synthetic resin fall prevention member 58 having the through hole 56 having an inner diameter smaller than the mounting hole 52 is disposed on the spacer 36. Therefore, when the stud bolt 44 is relatively inserted through the through hole 56 of the fall preventing member 58, the play position between the stud bolt 44 and the through hole 56 is small, so that the mounting position of the vehicle pedal bracket 14 is reduced. Variation is suppressed. That is, the fall prevention member 58 is elastically deformed according to the dimensional error and assembly error of each part, and variation in the mounting position is allowed within the range of play between the stud bolt 44 and the mounting hole 52. The vehicle pedal bracket 14 can be appropriately attached to the dash panel 12 regardless of the error, while the shaft center S of the stud bolt 44 and the attachment hole 52 are made as concentric as possible by the elasticity of the fall prevention member 58. Since the base plate portion 30 is positioned, variations in the mounting position are suppressed.

  Further, since the play between the stud bolt 44 and the through hole 56 is small, the posture change of the base plate portion 30 in the temporarily assembled state in which the stud bolt 44 is inserted into the mounting hole 52 of the base plate portion 30 and relative to the stud bolt 44. Since the movement is restricted and the vehicle pedal bracket 14 does not easily fall from the stud bolt 44 during the assembly work, the assembly work such as nut tightening can be easily performed.

  In this embodiment, the fall prevention member 58 is disposed on the spacer 36 so that the through hole 56 is concentric with the mounting hole 52, and the inner diameter of the through hole 56 is substantially the same as that of the stud bolt 44. Therefore, the stud bolt 44 is press-fitted into the through hole 56, and variations in the mounting position and dropping of the vehicle pedal bracket 14 from the stud bolt 44 during assembly work are further appropriately suppressed. Further, since the stud bolt 44 is centered in the direction that is relatively concentric with the mounting hole 52 due to the elasticity of the fall prevention member 58, the stud bolt 44 can be assembled without interfering with the mounting hole 52. Sticking is prevented.

  In the present embodiment, a small-diameter stepped portion 38 is provided at the tip of the spacer 36, and the fall-preventing member 58 is disposed between the small-diameter stepped portion 38 and the base plate portion 30. Is securely held inside the spacer 36, and the posture change of the vehicle pedal bracket 14 is also restricted by the small diameter stepped portion 38 being engaged with the stud bolt 44 in the temporarily assembled state. Falling is suppressed.

  Next, another embodiment of the present invention will be described. In the following embodiments, parts that are substantially the same as those in the above embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 5 is a cross-sectional view corresponding to FIG. 3, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5, and the fall prevention member 60 is different from that in the embodiment. The fall prevention member 60 has a cylindrical shape whose axial dimension is longer than that of the fall prevention member 58 of the above-described embodiment. It is installed. The through hole 62 has substantially the same diameter as the outer diameter of the stud bolt 44 in the same manner as in the above embodiment, but the fall prevention member 60 is shown alone on the inner peripheral surface of the through hole 62 from FIG. As can be seen, a plurality of V-shaped grooves 64 are provided in the entire axial length in parallel with the axis. Six grooves 64 are provided so as to radiate at equal angular intervals around the axis of the through hole 62 in the cross section perpendicular to the axis. Note that a portion between the plurality of grooves 64 can be regarded as a locking claw engaged with the stud bolt 44.

  Also in this embodiment, since the stud bolt 44 is relatively press-fitted into the through hole 62 of the fall prevention member 60 and inserted therethrough, variation in the mounting position of the vehicle pedal bracket 14 is suppressed and the temporarily assembled state is also achieved. As a result, it is difficult to drop the vehicle pedal bracket 14 and the assembly workability is improved. In addition, since the fall prevention member 60 has a relatively long cylindrical shape in this embodiment, the fitting length between the stud bolt 44 and the fall prevention member 60 is long, and the pedal bracket for the vehicle in a temporarily assembled state The posture of 14 is further stabilized, and the assembly workability such as nut tightening is further improved. In addition, since the plurality of grooves 64 are provided in the entire length in the axial direction on the inner peripheral surface of the through hole 62, the inner peripheral portion of the through hole 62 is easily elastically deformed, and relatively penetrates the stud bolt 44. The work at the time of press-fitting into the hole 62 is facilitated.

  FIG. 8 is a cross-sectional view corresponding to FIG. 3, and the fall prevention member 70 has a cylindrical shape having a length corresponding to the distance between the small-diameter stepped portion 38 and the base plate portion 30. In this case, the spacer 36 does not necessarily need to be fixed by press fitting or the like, and may be disposed so as to be positioned and held between the small-diameter stepped portion 38 and the base plate portion 30. Of course, like the above embodiment, the spacer 36 may be integrally fixed by press fitting or the like. Further, the through hole 72 of the fall prevention member 70 has a tapered shape that becomes larger in diameter toward the small diameter stepped portion 38 side, and the large diameter end is larger in diameter than the mounting hole 52 and the insertion hole 54. The small diameter end has substantially the same diameter as the outer diameter of the stud bolt 44. In the present embodiment, the through hole 72 has a tapered shape over substantially the entire length, and the entire through hole 72 corresponds to a tapered hole portion.

  Also in the present embodiment, since the stud bolt 44 is relatively press-fitted and inserted into the through hole 72 of the fall prevention member 70, variation in the mounting position of the vehicle pedal bracket 14 is suppressed, and the temporarily assembled state is also achieved. As a result, it is difficult to drop the vehicle pedal bracket 14 and the assembly workability is improved. In addition, since the through hole 72 has a tapered shape in the present embodiment, when the stud bolt 44 is relatively press-fitted into the through hole 72, the stud hole 44 is guided smoothly to the tapered inner peripheral surface. Thus, the workability when press-fitting into the through hole 72 is improved.

  FIG. 9 is a cross-sectional view corresponding to FIG. 3, and the fall prevention member 74 has a cylindrical shape having a through hole 76, and is integrated into the spacer 36 by press fitting or the like as in the above embodiment. It is fixed. The through hole 76 has a cylindrical hole portion 76a having a diameter substantially the same as the outer diameter of the stud bolt 44 and provided in a predetermined length range on the base plate portion 30 side, and the small diameter stepped portion 38 side from the cylindrical hole portion 76a. And a tapered hole portion 76b having a taper shape that increases in diameter toward the end portion thereof, and the large-diameter end, that is, the open end, reaches the outer peripheral surface of the fall prevention member 74.

  Also in this embodiment, when the stud bolt 44 is relatively press-fitted into the through hole 76, the stud bolt 44 is guided and smoothly inserted into the inner peripheral surface of the tapered hole 76 b, and is inserted into the through hole 76. The same effect as the embodiment of FIG. 8 that the workability at the time of press fitting is improved can be obtained. Further, the fall prevention member 74 of the present embodiment is provided with a cylindrical hole portion 76a having an inner diameter substantially equal to the outer diameter of the stud bolt 44 in a predetermined length range. The posture of the vehicle pedal bracket 14 in the assembled state is stabilized, and assembly workability such as nut tightening is improved.

  FIG. 10 is a cross-sectional view corresponding to FIG. 3. The fall prevention member 80 has a tapered through hole 82 having a diameter that increases toward the small diameter step portion 38 as in the fall prevention member 70 of FIG. In addition, a plurality of annular protrusions 84 are provided on the inner peripheral surface of the through hole 82 so as to have a sawtooth shape inclined toward the small diameter side in the axial cross section shown in the drawing. Therefore, also in this embodiment, the same effect as the embodiment of FIG. 8 can be obtained by the tapered through hole 82. In addition, since a plurality of annular protrusions 84 are provided on the inner peripheral surface of the through hole 82 of this embodiment, the annular protrusions 84 are engaged with the stud bolt 44 in a temporarily assembled state. As a result, it is difficult for the fall prevention member 80 to come out of the stud bolt 44, and the vehicle pedal bracket 14 is appropriately prevented from dropping from the stud bolt 44, and the assembly workability is further improved.

  8 to 10 and the fall prevention member 58 in FIG. 3 can be provided with a groove similar to the groove 64 in the embodiment of FIG.

  FIG. 11 is a cross-sectional view corresponding to FIG. 3. In this embodiment, the spacer 90 is different from the embodiment of FIG. That is, the inner diameter dimension of the small diameter step portion 92 of the spacer 90 is smaller than the insertion hole 96 provided in the dash panel 12, and the inner peripheral portion of the outer end surface of the small diameter step portion 92 is in the insertion hole 96. An annular projection 94 to be inserted is provided so as to protrude in the axial direction of the spacer 90. By providing the annular projection 94 inserted into the insertion hole 96 in this manner, the mounting position accuracy of the vehicle pedal bracket 14 with respect to the dash panel 12 is further increased. The inner diameter of the small-diameter step portion 92 is provided with substantially the same diameter as the insertion hole 54 so that it can be assembled regardless of assembly errors of the plurality of stud bolts 44. The insertion hole 96 is an annular protrusion. It is larger in diameter than the insertion hole 54 so that 94 can be inserted.

  12 is a cross-sectional view corresponding to FIG. 3, wherein (a) is a state before being attached to the dash panel 12, and (b) is a state being attached to the dash panel 12, and is based on the embodiment of FIG. However, the fall prevention member 100 is different. FIG. 13 is a front view of the fall prevention member 100 as seen from the axial direction. The fall prevention member 100 is made of a metal such as spring steel and has a thin circular plate shape, and the outer peripheral portion thereof is elastically fitted into an annular mounting groove 104 provided on the inner peripheral surface of the spacer 90. Thus, it is integrally attached to the inside of the spacer 90. In addition, the through hole 102 is provided so as to be substantially concentric with the mounting hole 52, and is formed in a star shape by providing a plurality of locking claws 106 protruding toward the center. . And the diameter dimension of the front-end | tip of those latching claws 106 is smaller than the outer diameter of the stud bolt 44, and when the stud bolt 44 is inserted in the through-hole 102, as shown to (b) of FIG. It is bent and deformed in the direction. Accordingly, the base plate portion 30 is positioned so that the mounting hole 52 is substantially concentric with the shaft center S of the stud bolt 44 due to the elasticity generated by the bending deformation, and the mounting of the vehicle pedal bracket 14 to the dash panel 12 is performed. Position accuracy is improved. In addition, since the locking claw 106 is engaged with the stud bolt 44 in the temporarily assembled state, the fall prevention member 100 is difficult to come out of the stud bolt 44, so that the vehicle pedal bracket 14 falls from the stud bolt 44. Thus, it is possible to obtain the same effects as in the above-described embodiment, for example, by appropriately suppressing the problem and improving the assembling workability. When the plate thickness of the fall prevention member 100 is smaller than the pitch of the male screw of the stud bolt 44, the locking claw 106 enters and engages with the thread groove of the male screw, so that the fall from the stud bolt 44 is more effectively prevented. . The space between the plurality of locking claws 106 can be regarded as a groove of the third invention.

  FIG. 14 is a front view corresponding to FIG. 13, and the fall prevention member 110 can be used in place of the fall prevention member 100 of the embodiment of FIG. The fall prevention member 110 is made of a metal such as spring steel and has a thin circular plate shape. The through holes 112 are provided with three locking claws 114 protruding toward the center at intervals of 120 °. Yes. The diameter of the tip of the locking claw 114 is also smaller than the outer diameter of the stud bolt 44. When the stud bolt 44 is inserted into the through hole 112, it is engaged with the stud bolt 44 and deformed by bending. The same effects as the 12th embodiment can be obtained. The fall prevention members 100 and 110 are both made of metal, but can be made of a hard synthetic resin having a predetermined elasticity.

  15 is a cross-sectional view corresponding to FIG. 3, wherein (a) is a state before being attached to the dash panel 12, and (b) is a state being attached to the dash panel 12, and is based on the embodiment of FIG. However, the fall prevention member 120 is different. FIG. 16 is a front view of the fall prevention member 120 as seen from the axial direction. The fall prevention member 120 is made of a hard synthetic resin material, and is a thin plate shape provided so as to protrude inward at a cylindrical portion 122 fitted into the inner peripheral side of the spacer 90 and an intermediate position in the axial direction of the cylindrical portion 122. The inward flange 124 is provided with a through hole 126 having a large number of locking claws 128 so as to be substantially concentric with the mounting hole 52. The axial length of the cylindrical portion 122 is substantially the same as the internal dimension between the base plate portion 30 and the small diameter step portion 92, and is positioned between them. The diameter of the tip of the locking claw 128 is smaller than the outer diameter of the stud bolt 44. When the stud bolt 44 is inserted into the through hole 126, it is engaged with the stud bolt 44 and is shown in FIG. As shown in FIG. 12, the same effect as the embodiment of FIG. 12 is obtained. The space between the plurality of locking claws 128 can be regarded as a groove of the third invention.

  As mentioned above, although the Example of this invention was described in detail based on drawing, these are one Embodiment to the last, This invention is implemented in the aspect which added the various change and improvement based on the knowledge of those skilled in the art. be able to.

  12: Dash panel 14: Vehicle pedal bracket 30: Base plate part 36, 90: Spacer 38, 92: Small diameter step part (inward projection) 44: Stud bolt (mounting bolt) 46: Nut 52: Mounting hole 54, 96: Insertion hole 56, 62, 76, 102, 112, 126: Through hole 58, 60, 70, 74, 80, 100, 110, 120: Fall prevention member (assembly auxiliary member) 64: Groove 72, 82: Through hole (Tapered hole) 76b: Tapered hole 84: Annular protrusion 94: Annular protrusion

Claims (6)

A plurality of mounting holes are provided in the plate-like base plate portion of the vehicle pedal bracket,
In order to fix the base plate portion away from the dash panel, a plurality of cylindrical spacers having a larger diameter than the mounting hole are fixed to the back side of the base plate portion corresponding to the mounting hole,
A plurality of mounting bolts projecting from the dash panel into the vehicle compartment are inserted through the spacers and the mounting holes with play, and nuts are screwed into leading ends projecting from the mounting holes, whereby the base plate portion is In the mounting structure of the pedal bracket for a vehicle that is integrally fixed to the dash panel with the spacer sandwiched between the dash panel,
The vehicle is characterized in that at least one of the plurality of spacers is provided with an elastically deformable assembly auxiliary member having a through hole having an inner diameter smaller than the mounting hole inside the cylindrical shape. Pedal bracket mounting part structure. The assembly auxiliary member is disposed in the spacer so that the through hole is concentric with the mounting hole,
2. The mounting structure of a pedal bracket for a vehicle according to claim 1, wherein an inner diameter of the through hole is substantially the same as an outer diameter of the mounting bolt. The mounting structure of a pedal bracket for a vehicle according to claim 1 or 2, wherein a groove is provided in the inner peripheral surface of the through hole along the entire length in the axial direction. The spacer is provided with an inward projection that protrudes toward the inner circumference side to allow the insertion of the mounting bolt,
The mounting structure of a pedal bracket for a vehicle according to any one of claims 1 to 3, wherein the assembly auxiliary member is disposed between the inward projection and the base plate portion. . While the mounting bolt is inserted through the insertion hole provided in the dash panel with play and protrudes into the vehicle interior,
The inward projection is continuously provided on the entire circumference of the inner peripheral surface of the tip portion located on the dash panel side of the spacer, and a small-diameter step portion having an inner diameter dimension smaller than the insertion hole,
5. The vehicular pedal bracket according to claim 4, wherein an annular protrusion inserted into the insertion hole is provided on an outer end surface of the small diameter step portion so as to protrude in an axial direction of the spacer. Mounting part structure. The through hole has a tapered hole portion having a tapered shape that increases in diameter toward the opposite side to the base plate portion, and
The taper hole portion is provided with a plurality of annular protrusions so as to have a sawtooth shape inclined toward the small diameter side in the axial cross-section. Mounting structure of pedal bracket for vehicles.

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