JP2023131697A - vehicle - Google Patents

Abstract

To minimize vibration of a dash panel in a structure supporting the brake pedal.SOLUTION: A vehicle includes: a vehicle body having a dash panel; a pedal bracket fixed to the dash panel; a brake pedal supported on the pedal bracket in a swingable manner; and a patch member bonded to a range in the dash panel to which the pedal bracket is fixed. The dash panel has at least two projections along one side of the patch member. The patch member is bonded to each of the at least two projections of the dash panel.SELECTED DRAWING: Figure 2

Description

The technology disclosed in this specification relates to a vehicle.

Patent Document 1 describes a structure that supports a brake pedal in a vehicle. In this structure, a pedal bracket that swingably supports a brake pedal is fixed to a dash panel of a vehicle body.

Japanese Patent Application Publication No. 2001-151089

In the above-mentioned vehicle, for example, when the anti-lock brake system is activated, vibrations occur in the brake pedal in response to changes in braking force (ie, changes in brake fluid pressure). Vibrations generated in the brake pedal are transmitted to the dash panel via the brake bracket, causing the dash panel to vibrate further. In order to suppress the vibration of the dash panel, it is conceivable to form reinforcing protrusions (so-called beads) on the dash panel to increase the rigidity of the dash panel. However, since dash panels are subject to various design constraints, it may not be possible to provide a sufficiently long protrusion near the brake bracket.

In view of the above, the present specification provides a technique that can reduce vibration of a dash panel in a structure that supports a brake pedal.

The technology disclosed in this specification is embodied in a vehicle. This vehicle includes a vehicle body with a dash panel, a pedal bracket fixed to the dash panel, a brake pedal swingably supported by the pedal bracket, and a patch joined to the range where the pedal bracket of the dash panel is fixed. a member, the dash panel has at least two protrusions provided along one side of the patch member, and the patch member is joined to each of the at least two protrusions of the dash panel.

In the vehicle described above, a pedal bracket that supports a brake pedal is fixed to the dash panel, and a patch member is provided in the fixed area. Further, the dash panel is provided with at least two protrusions disposed intermittently along one side of the patch member, and the patch member is joined to each of the at least two protrusions. According to such a configuration, at least two protrusions are connected to each other via the patch member, thereby effectively increasing the rigidity of the dash panel in the same way as a series of protrusions having sufficient length. can be increased to This makes it possible to suppress vibrations in the dash panel even when the anti-lock brake system is activated, for example.

FIG. 1 is an end view showing the configuration of the vehicle 10. FIG. FIG. 3 is a perspective view showing the configuration of a dash panel 14 and a patch member 18. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. A graph showing the level of vibration generated in the dash panel 14 for each frequency. FIG. 7 is a cross-sectional view showing a modified example of the patch member 18.

In one embodiment of the present technology, each of the at least two protrusions may have a top surface and a side surface adjacent to the top surface. In this case, the patch member may be joined to the top surface of each of the at least two protrusions. According to such a configuration, the top surfaces of the respective protrusions are connected to each other via the patch member, thereby effectively increasing the rigidity of the dash panel.

In the embodiments described above, the patch member may have a standing wall along one side and at least two joining tabs extending outwardly from the standing wall. In this case, each of the at least two joining tabs of the patch member may be joined to the top surface of a corresponding one of the at least two projections of the dash panel. According to such a configuration, since the patch member has the vertical wall forming an angle with the dash panel, the rigidity of the patch member can be increased. The at least two protrusions of the dash panel are joined to each other via a highly rigid patch member, thereby making it possible to more effectively increase the rigidity of the dash panel.

In one embodiment of the present technology, each of the at least two protrusions may have a top surface and a side surface adjacent to the top surface. In this case, the patch member may be joined to each side of the at least two protrusions. Such a configuration also makes it possible to effectively increase the rigidity of the dash panel. Note that the patch member may be joined to the top surface of each protrusion in addition to the side surface of each protrusion.

In the embodiments described above, the patch member may have a standing wall provided along one side. In this case, the vertical walls of the patch member may be joined to respective sides of at least two protrusions of the dash panel. Also with such a configuration, at least two protrusions of the dash panel are joined to each other via a patch member having high rigidity, so that the rigidity of the dash panel can be more effectively increased.

In one embodiment of the present technology, each of the at least two protrusions may be a ridge extending along one side of the patch member. In other embodiments, each of the at least two protrusions may be a seat disposed along one side of the patch member. When the protrusion is formed as a ridge, the rigidity of the dash panel can be effectively increased compared to when the protrusion is formed as a seat. Note that the term "projection" as used herein means a projection having a specific longitudinal direction, such as an oval or a rectangle in plan view. On the other hand, the term "seat" refers to a protrusion that has a shape in plan view that does not have a specific longitudinal direction, such as a circle or a square.

A vehicle 10 according to an embodiment will be described with reference to the drawings. As shown in FIG. 1, the vehicle 10 includes a vehicle body 12, a brake pedal 20, a master cylinder 22, a pedal bracket 24, and a patch member 18. The vehicle body 12 has a dash panel 14 provided at the front of the vehicle. Dash panel 14 extends in the width direction of vehicle 10. Dash panel 14 divides the interior of vehicle 10 into a cabin 10c and a front compartment 10f. The cabin 10c is a part where a user rides, and the front compartment 10f is a part where, for example, an engine and the like are arranged.

The brake pedal 20 and pedal bracket 24 are arranged in the cabin 10c. The pedal bracket 24 is fixed to the dash panel 14. The brake pedal 20 is swingably supported on the dash panel 14 by a pedal bracket 24. A patch member 18 is interposed between the pedal bracket 24 and the dash panel 14. The master cylinder 22 is located in the front compartment 10f and is fixed to the dash panel 14. The master cylinder 22 is located on the opposite side of the brake pedal 20 and the dash panel 14. The brake pedal 20 is connected to a master cylinder 22. Master cylinder 22 converts power from brake pedal 20 into hydraulic pressure.

Next, detailed structures of the dash panel 14 and the patch member 18 will be described with reference to FIGS. 2 and 3. As shown in FIG. 2, the dash panel 14 has a mounting hole 14h formed therein. Similarly, a mounting hole 18h is formed in the patch member 18 at a position corresponding to the mounting hole 14h of the dash panel 14. The brake pedal 20 and the master cylinder 22 are connected to each other through a mounting hole 14h in the dash panel 14 and a mounting hole 18h in the patch member 18. The pedal bracket 24 is joined to the dash panel 14 around the mounting hole 14h of the dash panel 14.

The patch member 18 is a reinforcing member for reinforcing the dash panel 14. The patch member 18 is joined to the region of the dash panel 14 where the pedal bracket 24 is fixed, and reinforces the region. The patch member 18 is generally a rectangular plate member having four sides 18s. The patch member 18 has a main body 18b, four standing walls 18w, and a plurality of tabs 18t. The main body 18b extends parallel to the dash panel 14, and is a portion in which a mounting hole 18h is formed. The four vertical walls 18w are provided along the four sides 18s of the patch member 18. Furthermore, the four standing walls 18w are adjacent to the main body 18b. The plurality of tabs 18t extend outward from the four vertical walls 18w. The plurality of tabs 18t include two first tabs 18t1 and a second tab 18t2. The two first tabs 18t1 are located on one side 18s1 of the four sides 18s of the patch member 18. The second tab 18t2 is located on the other side 18s2 of the four sides 18s of the patch member 18. Note that the shape of the patch member 18 is not particularly limited. Patch member 18 may have other shapes, such as three or more polygonal shapes.

As shown in FIGS. 2 and 3, the dash panel 14 is provided with a plurality of protrusions 15 and 16. The plurality of protrusions 15 and 16 protrude toward the normal direction of the dash panel 14. Further, the plurality of protrusions 15 and 16 are located outside the main body 18b of the patch member 18. The plurality of protrusions 15 and 16 extend along opposing sides 18s of patch member 18, respectively. The plurality of protrusions 15 and 16 include two first protrusions 15 and a second protrusion 16. Each of the first protrusions 15 has a ridge shape extending along one side 18s1 of the patch member 18. Each of the first protrusions 15 is a so-called bead. Each of the first protrusions 15 is provided parallel to one side 18s1 of the patch member 18 located on the first protrusion 15 side. Moreover, each of the first protrusions 15 extends on the same line as each other. Each of the first protrusions 15 has a top surface 15t and a side surface 15s adjacent to the top surface 15t. The cross section of the first protrusion 15 has a trapezoidal shape. The cross section here refers to a plane perpendicular to the direction in which the first protrusion 15 extends.

The patch member 18 and the dash panel 14 are joined together by welding. In FIGS. 2 and 3, each welding point is shown as WP. As an example, the patch member 18 is joined to the dash panel 14 at a portion adjacent to the vertical wall 18w of the main body 18b and at a portion located near the two first tabs 18t1. Further, among the plurality of tabs 18t of the patch member 18, the two first tabs 18t1 located on the first protrusion 15 side are joined to the top surfaces 15t of the two first protrusions 15, respectively. Note that, although not particularly limited, the patch member 18 is also joined to the dash panel 14 along the circumferential direction of the attachment hole 14h of the dash panel 14 using a fastener such as a bolt 19, for example. The patch member 18 is fastened to the dash panel 14 with four bolts 19.

The second protrusion 16 has a wider shape than the first protrusion 15 . Similar to the first protrusion 15, the second protrusion 16 has a top surface 16t and a side surface 16s adjacent to the top surface 16t. Each of the second protrusions 16 is provided parallel to the other side 18s2 of the patch member 18 located on the second protrusion 16 side. As an example, among the plurality of tabs 18t of the patch member 18, the second tab 18t2 located on the second protrusion 16 side is joined to the top surface 16t of the second protrusion 16.

Here, the first protrusion 15 is an example of a "protrusion" in the technology disclosed in this specification, and the two first tabs 18t1 located on the two first protrusion 15 sides of the patch member 18 are This is an example of a "joint tab" in the technology disclosed in this specification. Note that the configuration (eg, number, shape, location) of the first protrusion 15 is not limited to the above configuration. The number of first protrusions 15 provided on the dash panel 14 is not limited to two, and may be three or more. The cross section of each of the at least two first protrusions 15 is not limited to a trapezoidal shape, but may have a semicircular shape. Moreover, each of the at least two first protrusions 15 is not limited to the shape of a protrusion. In other embodiments, each of the at least two first protrusions 15 may be a seat disposed along one side 18s1 of the patch member 18. When the first protrusion 15 is formed as a protrusion as in this embodiment, the rigidity of the dash panel 14 can be effectively increased compared to the case where the first protrusion 15 is formed as a seat. Note that the term "projection" as used herein means a projection having a specific longitudinal direction, such as an oval or a rectangle in plan view. On the other hand, the term "seat" refers to a protrusion that has a shape in plan view that does not have a specific longitudinal direction, such as a circle or a square. Further, the at least two first protrusions 15 are not limited to one side 18s1 of the patch member 18, and may be provided along a plurality of sides among the four sides 18s of the patch member 18. In that case, the second protrusion 16 may not be provided. Furthermore, the number of first tabs 18t1 is not limited to two, and may be one or more. The number of first tabs 18t1 may be changed depending on the number of first protrusions 15.

In the vehicle 10 of this embodiment, for example, when the anti-lock brake system is activated, vibrations occur in the brake pedal 20 in response to changes in braking force (ie, changes in brake fluid pressure). The vibrations generated in the brake pedal 20 are transmitted to the dash panel 14 via the pedal bracket 24, causing the dash panel 14 to further vibrate. In order to suppress the vibration of the dash panel 14, it is conceivable to form reinforcing protrusions (so-called beads) on the dash panel 14 to increase the rigidity of the dash panel 14. However, since the dash panel 14 is subject to various design constraints, it may not be possible to provide a sufficiently long protrusion in the vicinity of the pedal bracket 24.

In view of the above problems, in the vehicle 10 of the present embodiment, a pedal bracket 24 that supports the brake pedal 20 is fixed to the dash panel 14, and a patch member 18 is provided in the fixed range. Further, the dash panel 14 is provided with two first protrusions 15 disposed intermittently along one side 18s1 of the patch member 18. are joined to each of them. According to such a configuration, the two first protrusions 15 are connected to each other via the patch member 18, so that the dash panel 14 can be extended in the same manner as a series of protrusions having a sufficient length. Rigidity can be effectively increased. Thereby, vibration of the dash panel 14 can be suppressed even when the anti-lock brake system is activated, for example.

The patch member 18 in this embodiment is joined to the top surface 15t of each of the two first protrusions 15. According to such a configuration, the top surfaces 15t of each of the first protrusions 15 are connected to each other via the patch member 18, so that the rigidity of the dash panel 14 can be effectively increased.

The patch member 18 in this embodiment has a standing wall 18w provided along one side 18s1, and two tabs 18t extending outward from the standing wall 18w, and each of the two first tabs 18t1 of the patch member 18 has It is joined to the top surface 15t of a corresponding one of the two first protrusions 15 of the dash panel 14. According to such a configuration, the patch member 18 has the standing wall 18w forming an angle with the dash panel 14, so that the rigidity of the patch member 18 can be increased. Then, the two first protrusions 15 of the dash panel 14 are joined to each other via the patch member 18 having high rigidity, so that the rigidity of the dash panel 14 can be more effectively increased.

The present inventors verified vibrations occurring in the dash panel 14 in the vehicle 10 of this example. The verification results will be explained with reference to FIG. 4. FIG. 4 is a graph showing the level of vibration generated in the dash panel 14 for each frequency. In FIG. 4, the verification results of the structure of this example are shown by a solid line (A), and the verification results of the conventional structure, which is a comparative example, are shown by a broken line (B). The conventional structure here refers to a structure in which the patch member 18 is fastened to the dash panel 14 with four bolts 19, and the main body 18b and the dash panel 14 are welded at two locations. As shown in FIG. 4, in the structure of this example, the vibration level was reduced in a wide frequency range compared to the conventional structure. In particular, in the vicinity of 300 hertz (maximum portion on the left side of the graph in FIG. 4), where the conventional structure resonated strongly, the structure of this example reduced the vibration level by about 20 decibels at maximum.

Note that the configuration of the patch member 18 in the vehicle 10 of this embodiment is not limited to the above-described configuration, and can be modified in various ways. The patch member 18 does not need to be joined to the respective top surfaces 15t of the two first protrusions 15. In this case, the patch member 18 may or may not have the two first tabs 18t1 located on the first protrusion 15 side. As shown in FIG. 5, the patch member 18 may be joined to each side surface 15s of the two first protrusions 15. According to such a configuration, the rigidity of the dash panel 14 can be effectively increased. Furthermore, the standing wall 18w of the patch member 18 may be joined to each side surface 15s of the two first protrusions 15 of the dash panel 14. Even with this configuration, the two first protrusions 15 of the dash panel 14 are joined to each other via the patch member 18 having high rigidity, so that the rigidity of the dash panel 14 can be more effectively increased. can. Note that the patch member 18 may be joined not only to the side surface 15s of each first protrusion 15 but also to the top surface 15t of each first protrusion 15.

Although specific examples of the technology disclosed in this specification have been described above in detail, these are merely examples and do not limit the scope of the claims. The techniques described in the claims include various modifications and changes to the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims as filed. The techniques illustrated in this specification or the drawings can achieve multiple objectives simultaneously, and achieving one of the objectives has technical utility in itself.

10: Vehicle 12: Body 14: Dash panel 15: First protrusion 15s: Side surface 15t: Top surface 18: Patch members 18s, 18s1, 18s2: Sides 18t, 18t1, 18t2: Tab 18w: Standing wall 20: Brake pedal 22: Master cylinder 24: Pedal bracket WP: Welding point

Claims (6)

A vehicle body having a dash panel;
a pedal bracket fixed to the dash panel;
a brake pedal swingably supported by the pedal bracket;
a patch member joined to a region of the dash panel where the pedal bracket is fixed;
The dash panel is provided with at least two protrusions along one side of the patch member,
the patch member is joined to each of the at least two protrusions of the dash panel;
vehicle. Each of the at least two protrusions has a top surface and a side surface adjacent to the top surface,
The vehicle according to claim 1, wherein the patch member is joined to the top surface of each of the at least two protrusions. The patch member has a standing wall provided along the one side, and at least two joining tabs extending outward from the standing wall,
3. The vehicle of claim 2, wherein each of the at least two joining tabs of the patch member is joined to the top surface of a corresponding one of the at least two projections of the dash panel. Each of the at least two protrusions has a top surface and a side surface adjacent to the top surface,
The vehicle according to claim 1, wherein the patch member is joined to the side surface of each of the at least two protrusions. The patch member has a standing wall provided along the one side,
The vehicle according to claim 4, wherein the vertical wall of the patch member is joined to the side surface of each of the at least two protrusions of the dash panel. The vehicle according to any one of claims 1 to 5, wherein each of the at least two protrusions is a protrusion extending along the one side of the patch member.

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