JP6410128B2 - Car body fixing structure - Google Patents

Description

  The present invention relates to a fixing structure for a vehicle-mounted component of a cab.

  Patent Document 1 includes a dash panel as a substantially vertical partition that partitions the engine room and the vehicle compartment, an instrument panel that is attached so as to surround the front portion of the dash panel, and an interior of the instrument panel. A vehicle provided with a cross car beam extending in the width direction is described. In addition, a substantially intermediate position in the vehicle width direction of the cross car beam is supported by the vehicle body using a center stay. The center stay has an end on the cross car beam side fixed to the cross car beam, and an end on the vehicle body side fixed to the dash panel. Inside the instrument panel, a blower unit and an air conditioner unit are disposed at a substantially intermediate position in the vehicle width direction. The blower unit and the air conditioner unit are arranged at positions on both sides of the center stay, and are fastened together with the center stay.

JP 2008-94172 A

  In the structure described in Patent Document 1, when components (other components) other than the blower unit and the air conditioner unit are arranged around the cross car beam, the front end side of the other components is connected to the dash panel in the same manner as the center stay. The rear end side can be fixed to the cross car beam.

  However, when placing other parts in a place where the rear end cannot be fixed to the crosscar beam due to restrictions on the internal layout of the instrument panel, the rear end of the other parts is placed on the instrument panel. It is necessary to fix it.

  If the front and back of other parts are fixed to the dash panel and the instrument panel, when a load from the front is input to the dash panel during a frontal collision of the vehicle, the load input to the dash panel Through the instrument panel, the instrument panel may be retracted to narrow the space in the passenger compartment.

  Accordingly, an object of the present invention is to provide a vehicle-mounted component fixing structure for a cab capable of suppressing a narrowing of a space in a vehicle compartment due to a backward movement of an instrument panel during a frontal collision of a vehicle.

In order to achieve the above-described object, the present disclosure is provided with a dashboard that stands in the vehicle width direction at the front portion of the cab and divides the front portion of the vehicle compartment, and is disposed at the front portion of the vehicle compartment and behind the dashboard. between the instrument panel and the dashboard and the instrument panel of the cab with that, Ri fixing structure der-vehicle part to be spaced apart from the dashboard, a first aspect of the present invention includes a front bracket And a rear bracket.

The front bracket is fixed to the dashboard and supports the in-vehicle component from the front. The rear bracket is fixed to the instrument panel and supports the in-vehicle component from the rear. The front bracket includes a plate-like fixing portion that is fixed to the dashboard and extends rearward, a flat plate-like intermediate portion that is bent downward from a rear end edge of the fixing portion, and a rear end from the lower end edge of the intermediate portion. It has a plate-like support part that extends in a bent manner and supports the in-vehicle components, and is more easily deformed than the rear bracket with respect to a load input from the front via the dashboard.

  In the above configuration, when a load is input to the dashboard from the front and the dashboard is pressed rearward, the front bracket fixed to the dashboard, and the in-vehicle component supported from the front by the front bracket, The rear bracket that supports the in-vehicle component from behind is pressed backward by the dashboard. At this time, since the rear bracket is fixed to the instrument panel disposed behind the dashboard, a compressive load acts on the front bracket and the rear bracket along the vehicle longitudinal axis. The front bracket is deformed earlier than the rear bracket because it is easier to deform than the rear bracket with respect to a load input from the front via the dashboard.

  Therefore, when a load from the front is input to the dashboard during a frontal collision of the vehicle (front collision), the front bracket is deformed before the rear bracket, and energy absorption due to the deformation of the front bracket is absorbed from the dashboard. Reduce the input load to the instrument panel. For this reason, the retreat of the instrument panel at the time of the frontal collision of the vehicle can be reduced, and the narrowing of the space in the vehicle interior due to the retreat of the instrument panel can be suppressed.

Further , the intermediate part extends downwardly from the rear end edge of the fixed part fixed to the dashboard, and the support part extends backward from the lower end edge of the intermediate part to support the vehicle-mounted components. . When a load is input to the dashboard from the front, the fixed portion is pressed backward, and the boundary portion between the fixed portion and the intermediate portion is also pressed backward. At this time, the boundary portion between the fixed portion and the intermediate portion is easily deformed so that the angle of the intermediate portion with respect to the fixed portion decreases while moving backward with respect to the pressure from the front, and the intermediate portion and the support portion The boundary portion is easily deformed so that the angle of the intermediate portion with respect to the support portion decreases as the boundary portion between the fixed portion and the intermediate portion retreats. For this reason, the deformation | transformation aspect of the front bracket with respect to the load input from the front is hard to receive to the influence of the input aspect of a load, and a front bracket tends to deform | transform in a desired aspect.

Therefore, the backward movement of the instrument panel at the time of a frontal collision of the vehicle can be reliably reduced.
A second aspect of the present invention is the above-described in-vehicle component fixing structure of the present disclosure, and includes a first front bracket, a second front bracket, and a rear bracket.
The first front bracket and the second front bracket are fixed to the dashboard and support the vehicle-mounted component from the front. The rear bracket is fixed to the instrument panel and supports the in-vehicle component from the rear. The first front bracket includes a plate-like fixing portion that is fixed to the dashboard and extends rearward, a flat plate-like intermediate portion that extends by bending downward from the rear end edge of the fixing portion, and a lower end edge of the intermediate portion. It bends and extends backward, and integrally has a plate-like support portion that supports the in-vehicle component, and is more easily deformed than the rear bracket with respect to a load input from the front via the dashboard. The second front bracket is less likely to deform than the first front bracket with respect to a load input from the front via the dashboard.

  According to the present invention, it is possible to suppress the narrowing of the space in the passenger compartment due to the backward movement of the instrument panel at the time of a frontal collision of the vehicle.

It is the perspective view which looked at the front part of the vehicle interior of the cab which concerns on one Embodiment of this invention from diagonally upward. It is a principal part perspective view of FIG. It is a perspective view of a B / C bracket. 4A and 4B are schematic views of the main part of FIG. 3 viewed from the right side, in which FIG. 3A shows a state before the right front bracket is deformed, and FIG. 3B shows a state after the right front bracket is deformed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the figure, FR indicates the front of the vehicle, UP in the figure indicates the upper side of the vehicle, and IN in the figure indicates the inner side in the vehicle width direction. Further, in the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction in a state of facing the front of the vehicle.

  As shown in FIGS. 1 to 4, a vehicle 2 to which the on-vehicle component fixing structure 1 for a cab according to this embodiment is applied is a cab-over type truck in which the cab 3 is generally disposed above an engine room (not shown). It is.

  The cab 3 is a substantially box-shaped body, and partitions the passenger compartment 4 inside. The cab 3 includes a floor panel 5 that extends rearward from the lower front end of the vehicle 2 and defines a lower portion of the vehicle compartment 4, a dashboard 6 that defines the front of the vehicle compartment 4, and a dashboard at the front of the vehicle compartment 4 and the dashboard. 6 and an instrument panel 7 disposed at the rear of the vehicle. The floor panel 5 and the dashboard 6 are made of a high-strength material such as a steel plate, for example, and are formed by press molding. A B / C bracket 9 that rotatably supports the clutch pedal 8 is disposed between the dashboard 6 and the instrument panel 7, and an instrument that supports the instrument panel 7 is disposed behind the B / C bracket 9. A frame 10 is arranged.

  The dashboard 6 has a dashboard opening 14 into which a windshield (not shown) is fitted, an upper part (not shown) that extends in the vehicle width direction and defines the dashboard opening 14, and extends in the vertical direction. The front end of the floor panel 5 has a pair of left and right side portions 15 that define both sides of the dashboard opening 14 and a lower portion 16 that extends in the vehicle width direction and defines the lower portion of the dashboard opening 14. Stands up along the vehicle width direction. The lower portion 16 has a protruding portion 17 that protrudes rearward from the upper end portion of the lower portion 16. The lower surface of the protrusion 17 is positioned above the upper surface of a clutch pedal bracket 22 described later.

  The instrument panel 7 extends along the vehicle width direction at the front portion in the passenger compartment 4. The instrument panel 7 includes a left instrument panel 18 that extends left and right at the front part on the driver's seat side (a steering support part 56 described later), and a right instrument that extends left and right at the front part on the passenger seat side. It has the panel part 19, and the cover part 20 located between the left instrument panel part 18 and the right instrument panel part 19. FIG. The cover unit 20 is provided with a drink holder 57, an air conditioner outlet 58, and the like.

  The B / C bracket 9 includes a clutch pedal bracket (on-vehicle component) 22 that is spaced apart from the dashboard 6, a right front bracket (front bracket) 23 that connects the dashboard 6 and the clutch pedal bracket 22, and a right front bracket. 23, a left front bracket (front bracket) 24 that is disposed on the left side of the dashboard 23 and connects the dashboard 6 and the clutch pedal bracket 22, a rear bracket 25 that connects the clutch pedal bracket 22 and the instrument frame 10, and a rear bracket 25. And a bracket lower portion 26 fixed to the bracket.

  The clutch pedal bracket 22 includes a substantially rectangular upper panel 28, a right side panel 29 extending downward from the right end edge of the upper panel 28, a left side panel 30 extending downward from the left end edge of the upper panel 28, and the upper panel 28. A front panel 31 that extends downward from the front edge of the vehicle and has both ends in the vehicle width direction continuous with the front edge of each of the right side panel 29 and the left side panel 30 is integrally provided. Two holes 32 arranged in the left and right direction are formed in a substantially central portion of the upper panel 28 in the front-rear direction. A columnar bracket 33 that extends along the vehicle width direction and rotatably supports the clutch pedal 8 is fixed to the right side surface of the left side panel 30.

  The right front bracket 23 includes a flat front fixing part 34 extending substantially horizontally, a flat middle part 35 extending from the rear end edge of the front fixing part 34 in a diagonally backward direction, and a lower end edge of the intermediate part 35. It has a flat plate-like rear fixing portion 36 that is bent rearward and extends substantially horizontally. The rear end of the front fixing portion 34 is located in front of the front end of the rear fixing portion 36. That is, the angle θa of the intermediate portion 35 with respect to the front fixing portion 34 and the angle θb of the intermediate portion 35 with respect to the rear fixing portion 36 are greater than 90 ° and less than 180 ° (90 ° <θa <180 °, 90 ° <θb < 180 °). A bolt hole 37 a is formed in the front fixing portion 34, and the front fixing portion 34 is fastened and fixed to the upper surface of the lower portion 16 of the dashboard 6 by a bolt (not shown) inserted through the bolt hole 37 a. A bolt hole 37 b is formed in the rear fixing portion 36, and the rear fixing portion 36 is fastened and fixed to the upper surface of the clutch pedal bracket 22 by a bolt (not shown) inserted through the bolt hole 37 b. That is, the right front bracket 29 is fixed to the dashboard 6 and supports the clutch pedal bracket 22 from the front. Further, the rear end of the front fixing portion 34 fixed to the dashboard 6 protrudes slightly rearward from the rear end of the projection 17 of the dashboard 6, and the front end of the rear fixing portion 36 fixed to the clutch pedal bracket 22. Project slightly forward from the front end of the clutch pedal bracket 22.

  The left front bracket 24 includes a front fixing portion 38 that extends substantially horizontally, a middle portion 39 that bends downward at a substantially right angle from the rear end edge of the front fixing portion 38, and a rearward bending from the lower end edge of the middle portion 38. A rear fixing portion 40 extending substantially horizontally is integrally provided. That is, the angle of the intermediate portion 35 with respect to the front fixing portion 34 and the angle of the intermediate portion 35 with respect to the rear fixing portion 36 are set to approximately 90 °. A bolt hole 41 a is formed in the front fixing portion 38, and the front fixing portion 38 is fastened and fixed to the upper surface of the lower portion 16 of the dashboard 6 by a bolt (not shown) inserted through the bolt hole 41 a. A bolt hole 41 b is formed in the rear fixing portion 40, and the rear fixing portion 40 is fastened and fixed to the upper surface of the clutch pedal bracket 22 by a bolt (not shown) that passes through the bolt hole 41 b. That is, the left front bracket 24 is fixed to the dashboard 6 and supports the clutch pedal bracket 22 from the front. At the rear end edge of the left front bracket 24 and both end edges in the vehicle width direction, flange portions 42 that are bent upward and are continuously formed in a U shape, and the vehicle width of the intermediate portion 39 and the rear fixing portion 40 of the left front bracket 24 are formed. A bead 43 that protrudes rearward from the intermediate portion 39 and protrudes upward from the rear fixing portion 40 is formed in series in a substantially central direction. Similarly to the right front bracket 23, the left front bracket 24 also has a rear end of the front fixing portion 38 fixed to the dashboard 6 slightly projecting rearward from the rear end of the projecting portion 17 of the dashboard 6, and the clutch pedal bracket 22. The front end of the rear fixing portion 40 that is fixed to the front end protrudes slightly forward from the front end of the clutch pedal bracket 22.

  The rear bracket 25 extends vertically and is fixed to the instrument frame 10. The rear bracket 25 is bent from the rear end edge of the upper fixed portion 45 and extends obliquely downward to the front. A lower fixing portion 46 that is fixed to the rear end edge and the rear end edges of the right side panel 29 and the left side panel 30 is integrally provided. The upper fixing portion 45 is formed with a bolt hole into which a bolt 55 described later is inserted.

  The distance between the fixing position of the rear bracket 25 to the clutch pedal bracket 22 and the fixing position to the instrument frame 10 is based on the distance between the fixing position of the right front bracket 23 to the dashboard 6 and the fixing position of the clutch pedal bracket 22. Also short. For this reason, when a load is input to the right front bracket 23 and the rear bracket 25 from the front via the dashboard 6, the rear bracket 25 is less likely to be deformed. That is, the right front bracket 23 is more easily deformed than the rear bracket 25 with respect to a load input from the front via the dashboard 6. The method for making the right front bracket 23 more easily deformed than the rear bracket 25 with respect to the load from the front is not limited to the above method. For example, by making the rear bracket 25 thicker or reinforcing the rear bracket 25 by forming a flange or a bead, the rear bracket 25 is made difficult to deform, so that the right front bracket 23 is made more difficult than the rear bracket 25. May be easily deformed.

  The bracket lower portion 26 has a plate-like plate portion 49 that extends in the vertical direction and is fixed to the front surface of the lower fixing portion 46 of the rear bracket 25, and a vertical portion 50 that extends forward from the front surface of the plate portion 49. Located below the bracket 22. The plate portion 49 is inclined so that the upper end side falls backward. A columnar bracket 33 that supports the clutch pedal 8 is fixed to the left side surface of the upper portion of the vertical portion 50.

  The instrument frame 10 is a metal plate-like member that is disposed inside the instrument panel 7 and extends in the vehicle width direction above the floor panel 5. The instrument frame 10 integrally includes a vertical plate portion 52 fixed to the upper fixing portion 45 of the rear bracket 25 and a horizontal plate portion 53 extending rearward from the upper end edge of the vertical plate portion 52. Bolt holes are formed in the vertical plate portion 52. The vertical plate portion 52 and the upper fixing portion 45 of the rear bracket 25 are fastened and fixed by bolts 55 that are inserted through bolt holes formed in the vertical plate portion 52 and the rear bracket 25, respectively. A steering wheel support portion 56 that supports a steering wheel (not shown) is fixed to the left side of the instrument frame 10 in the vehicle width direction.

  Next, based on FIGS. 4A and 4B, the behavior of the dashboard 6 and the right front bracket 23 when a load is input to the dashboard 6 from the front (the arrow direction shown in FIG. 4B) will be described. To do.

  As shown in FIGS. 4A and 4B, when a load is input to the dashboard 6 from the front, the dashboard 6 is pressed and moves rearward. As the dashboard 6 moves rearward, the front fixing portion 34 of the right front bracket 23 fixed to the dashboard 6 is also pushed rearward and moved rearward. For this reason, the entire right front bracket 23 is deformed so that the rear end of the front fixing portion 34 moves rearward from the front end of the rear fixing portion 36. That is, the pressure from the dashboard 6 changes the angle θa of the intermediate portion 35 with respect to the front fixing portion 34 and the angle θb of the intermediate portion 35 with respect to the rear fixing portion 36 from a state larger than 90 ° to a state smaller than 90 °. It deforms as follows.

  In the present embodiment, when a load is input to the dashboard 6 from the front and the lower part 16 of the dashboard 6 is pressed rearward, the right front bracket 23 and the left front fixed to the upper surface of the lower part 16 of the dashboard 6. The bracket 24, the clutch pedal bracket 22 supported from the front by the right front bracket 23 and the left front bracket 24, and the rear bracket 25 supporting the clutch pedal bracket 22 from the rear are pressed rearward by the lower portion 16 of the dashboard 6. Is done. At this time, since the rear bracket 25 is fixed to the instrument panel 7 disposed behind the dashboard 6, the right front bracket 23, the left front bracket 24, and the rear bracket 25 are arranged along the vehicle longitudinal axis. Compressive load is applied. The right front bracket 23 is deformed earlier than the rear bracket 25 because it is easier to deform than the rear bracket 25 with respect to a load input from the front via the dashboard 6. Further, since the bead and the flange are not formed on the right front bracket 23, the right front bracket 23 is more easily deformed than the left front bracket 24 on which the flange portion 42 and the bead 43 are formed with respect to a load input from the front. The front left bracket 24 is deformed before the left front bracket 24.

  Accordingly, when a load from the front is input to the dashboard 6 during a frontal collision (front collision) of the vehicle 2, the right front bracket 23 is deformed before the rear bracket 25 and ahead of the left front bracket 24. Transforms into The deformation of the right front bracket 23 reduces the load input from the dashboard 6 to the instrument panel 7 via the left front bracket 24 by the amount of energy consumed for the deformation of the right front bracket 23. For this reason, the backward movement of the instrument panel 7 at the time of the front collision of the vehicle 2 can be reduced, and the narrowing of the space in the passenger compartment 4 due to the backward movement of the instrument panel 7 can be suppressed.

  Further, the intermediate portion 35 of the right front bracket 23 extends from the rear end edge of the front fixing portion 34 fixed to the upper surface of the lower portion 16 of the dashboard 6 so as to bend downward and obliquely downward, and the rear fixing portion 36 includes the intermediate portion 35. The lower end edge of the clutch is bent backward and fixed to the upper surface of the clutch pedal bracket 22. When a load is input to the right front bracket 23 from the front via the dashboard 6, the front fixing portion 34 is pressed rearward, and the boundary portion between the front fixing portion 34 and the intermediate portion 35 is also pressed rearward. At this time, the boundary portion between the front fixing portion 34 and the intermediate portion 35 is easily deformed so that the angle θa of the intermediate portion 35 with respect to the front fixing portion 34 decreases while moving backward with respect to the pressure from the front, The boundary portion between the intermediate portion 35 and the rear fixing portion 36 is deformed so that the angle θb of the intermediate portion 35 with respect to the rear fixing portion 36 decreases as the boundary portion between the front fixing portion 34 and the intermediate portion 35 moves backward. easy. For this reason, the deformation | transformation aspect of the right front bracket 23 with respect to the load input from the front is hard to be influenced by the input aspect of a load, and the right front bracket 23 is easy to deform | transform in a desired aspect.

  Further, of the right front bracket 23 and the left front bracket 24, only the right front bracket 23 is formed so as to be easily deformed, and the left front bracket 24 is formed by the flange portion 42 and the bead 43 so as not to be easily deformed. Thus, by using the bracket that is easily deformed and the bracket that is difficult to deform, the dashboard 6 has a region that is easily retracted due to the deformation of the bracket and the bracket is difficult to deform at the time of the front collision of the vehicle 2. An area that is difficult to retract is generated. Accordingly, when the dashboard 6 is retreated, the dashboard 6 is allowed to retreat in an area where the inconvenience due to interference with other parts does not occur even if the dashboard 6 retreats, and the dashboard 2 absorbs energy. The dashboard 6 can be prevented from retreating in a region where the retreat of 6 is not preferable.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, in the above embodiment, the clutch pedal bracket 22 is applied as an in-vehicle component disposed between the dashboard 6 and the instrument panel 7, but the present invention is not limited to this. For example, an air conditioning unit or a heat exchanger is used. Other in-vehicle components such as a unit may be used.

  In the above embodiment, two brackets (the left front bracket 24 and the right front bracket 23) for fixing the dashboard 6 and the clutch pedal bracket 22 are provided, but the number of brackets is not limited to two. There may be one, or three or more.

  Moreover, in the said embodiment, although the left front bracket 24 is made difficult to deform | transform by the flange part 42 and the bead 43, the left front bracket 24 is equivalent to the right front bracket 23, without forming the flange part 42 and the bead 43 in a left front bracket. It may be easy to deform.

  In the above embodiment, the intermediate portion 35 of the right front bracket 23 extends obliquely downward and rearward from the rear end edge of the front fixing portion 34, but extends substantially perpendicularly downward from the rear end edge of the front fixing portion 34. May be. Further, the intermediate portion 39 of the left front bracket 24 extends from the rear end edge of the front fixing portion 38 by bending at a substantially right angle downward, but may extend from the rear end edge of the front fixing portion 38 to the rear obliquely downward direction. Good.

  The present invention can be widely used as a fixing structure for in-vehicle components of a cab.

1: Vehicle component fixing structure 2: Vehicle 3: Cab 4: Cab 6: Dashboard 7: Instrument panel 9: B / C bracket 10: Instrument frame 22: Clutch pedal bracket (vehicle component)
23: Right front bracket (front bracket , first front bracket )
24: Left front bracket (front bracket , second front bracket )
25: Rear bracket 34: Front fixing part (fixing part)
35: Intermediate part 36: Rear fixing part (support part)

Claims (2)

The cab that has a dashboard that stands in the vehicle width direction at the front portion of the cab and partitions the front of the vehicle compartment, and an instrument panel that is disposed at the front of the vehicle compartment and behind the dashboard Between the dashboard and the instrument panel, and a vehicle-mounted component fixing structure disposed away from the dashboard,
A front bracket fixed to the dashboard and supporting the in-vehicle component from the front,
A rear bracket fixed to the instrument panel and supporting the in-vehicle component from the rear, and
The front bracket includes a plate-like fixing portion that is fixed to the dashboard and extends rearward, a flat plate-like intermediate portion that extends by bending downward from a rear end edge of the fixing portion, and a lower end of the intermediate portion It bends and extends backward from the edge, and integrally has a plate-like support portion that supports the in-vehicle component, and more easily deforms than the rear bracket with respect to a load input from the front via the dashboard. The fixed structure of the in-vehicle component of the cab. The cab that has a dashboard that stands in the vehicle width direction at the front portion of the cab and partitions the front of the vehicle compartment, and an instrument panel that is disposed at the front of the vehicle compartment and behind the dashboard Between the dashboard and the instrument panel, and a vehicle-mounted component fixing structure disposed away from the dashboard ,
A first front bracket and a second front bracket that are fixed to the dashboard and support the vehicle-mounted component from the front;
A rear bracket fixed to the instrument panel and supporting the in-vehicle component from the rear, and
The first front bracket includes a plate-like fixing portion fixed to the dashboard and extending rearward, a flat plate-like intermediate portion extending downward from a rear end edge of the fixing portion, and the intermediate portion It bends and extends backward from the lower edge of the plate, and integrally has a plate-like support portion that supports the vehicle-mounted component, and is deformed more than the rear bracket with respect to a load input from the front via the dashboard Easy to do,
The cab in-vehicle component fixing structure, wherein the second front bracket is less deformable than the first front bracket with respect to a load input from the front through the dashboard .

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