Protective structure

Abstract

To effectively prevent interference with a device requiring protection, when a collision is generated in a vehicle.SOLUTION: A protective structure includes a frame part FL forming a skeleton of a vehicle V, a base part 10 for dispersing impact by collision in the frame part FL, a lower bracket 100 which is fixed to the base part 10 and acts as a first bracket, and a front bracket 200 which fixes and supports an air compressor 20 as a protection target member, is fixed to the base part 10 through the lower bracket 100, and acts as a second bracket, wherein the front bracket 200 is formed with an abutting part 210 which projects toward an adjacent member AD arranged adjacent to the front bracket 200, and at least a part of the abutting part 210 and the lower bracket 100 is provided so as to be overlapped with each other in an overlapped part OR, when being viewed from a side where the abutting part 210 projects.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a protective structure. [Background technology]

[0002] In recent years, electric vehicles have become more popular, and when the vehicle is a hybrid vehicle, electric vehicle, etc., an inverter unit that converts DC voltage into AC voltage to drive the electric motor may be installed in the front of the vehicle.

[0003] For example, the inverter generates the high voltage necessary for the vehicle to run, and if deformation or disconnection occurs due to a frontal collision of the vehicle or the like, there is a risk of a sudden abnormal reaction. Therefore, there is a need for a structure that reduces the effect on devices that require high voltage, such as inverters or air compressors, when a vehicle collision occurs.

[0004] As a technology to address the above-mentioned problem, since the gap between the air compressor as an accessory and the bracket is narrowest near the upper mounting part, the upper mounting part, which has a relatively low rigidity, deforms in the event of a frontal collision of the vehicle, and the air compressor rotates relative to the bracket with the lower mounting part, which has a relatively high rigidity, as a fulcrum. A technology has been disclosed (for example, see Patent Document 1) in which the bracket abuts against the air compressor at the part where the gap between the air compressor and the bracket is narrowest, thereby suitably preventing the air compressor from falling off due to the impact during a frontal collision of the vehicle. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6090185 Summary of the Invention [Problem to be solved by the invention]

[0006] In the technology described in Patent Document 1, in the event of a frontal collision of the vehicle, the collision energy is concentrated at one point on the upper mounting part, which has a relatively low rigidity, causing the upper mounting part to break, thereby preventing the air compressor, which is an auxiliary device that requires protection, from falling off.

[0007] However, the technique described in Patent Document 1 has a problem in that, when a vehicle collision occurs, adjacent members may interfere with the device that needs protection.

[0008] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide a protective structure that effectively prevents interference with devices that require protection when a vehicle collision occurs. [Means for solving the problem]

[0009] Form 1: One or more embodiments of the present invention propose a protective structure comprising a frame portion forming the skeleton of a vehicle, a base portion that distributes the impact of a collision to the frame portion when a collision occurs, a first bracket fixed to the base portion, and a second bracket fixed to the first bracket for fixing and supporting a member to be protected from the impact of a collision, wherein the second bracket is formed with a contact portion that protrudes toward an adjacent member disposed adjacent to the second bracket, and when viewed from the side from which the contact portion protrudes, at least a portion of the contact portion and the first bracket overlap.

[0010] Mode 2: One or more embodiments of the present invention propose a protective structure in which the fixing direction in which the second bracket is fixed to the first bracket is oriented perpendicular to the contact surface formed by the protruding contact portion.

[0011] Mode 3: One or more embodiments of the present invention propose a protective structure in which at least a portion of the fixing direction in which the first bracket is fixed to the base portion is oriented in a direction different from the fixing direction of the second bracket to the first bracket. Effect of the Invention

[0012] According to one or more embodiments of the present invention, when a vehicle crash occurs, interference with devices requiring protection can be effectively prevented. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view of a vehicle to which a protective structure according to an embodiment of the present invention is applied, as viewed from above. [Diagram 2] 1A and 1B are three-view diagrams showing a protective structure according to an embodiment of the present invention, in which (a) is a plan view seen from above, (b) is a front view, and (c) is a side view seen from the right side. [Diagram 3] 4 is an enlarged perspective view of a contact portion in the protective structure according to the embodiment of the present invention, as viewed from above. FIG. [Figure 4] 5A to 5C are side views showing in chronological order the action of the protective structure according to the embodiment of the present invention when a collision occurs. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The protective structure 1 according to this embodiment will be described below with reference to Figures 1 to 4. Note that, as shown in Figures, an arrow FR appropriately indicates the front side of the protective structure 1, as shown in Figure 2, indicates the upper side of the protective structure 1 as viewed from the front side, and an arrow LH indicates the left side of the protective structure 1 as viewed from the front side. In addition, in the following description, when the up-down, front-rear, and left-right directions are used, they indicate the up-down direction as viewed from the front side of the protective structure 1, the front-rear direction with the front side of the protective structure 1 as the front, and the left-right direction as viewed from the front side of the vehicle protective structure 1, unless otherwise specified.

[0015] <Embodiment> The configuration of a protective structure 1 according to this embodiment will be described with reference to FIGS. 1 to 3. FIG.

[0016] <About the front body structure S> 1, a vehicle V has a vehicle body front structure S disposed in front of a cabin CA, which is the interior of the vehicle where passengers sit. The vehicle body front structure S is provided in front of a toe board TB. The vehicle body front structure S includes a frame FL and a drive unit DA.

[0017] (Regarding the frame part FL) The frame portion FL is connected in a crisscross pattern in the vehicle width direction and the vehicle front-rear direction in the vehicle body front structure S, as shown by the dot-hatched portion in Fig. 1. The frame portion FL is the skeleton of the vehicle V, and is made of a strong metal or the like having a substantially rectangular closed cross-sectional shape. When a collision occurs, the frame portion FL protects the cabin CA and the drive portion DA by absorbing and dispersing the impact of the collision into the frame portion FL.

[0018] (About the drive unit DA) The drive section DA is disposed in the area of ​​the vehicle body front structure S, and is surrounded by the toe board section TB and the frame section FL. The drive section DA is a drive device that includes, for example, a power unit section equipped with an internal combustion engine that drives the front wheels FT or a vehicle drive motor in an electric vehicle, and is provided with a transmission, a clutch, a drive shaft, etc. The drive unit DA is firmly fixed to the frame unit FL.

[0019] <Protection Structure 1> The protective structure 1 is a structure that is applied to a device that constitutes a drive unit DA that drives front wheels FT of a vehicle V, for example. As shown in Figures 2(a) to 2(c), the protective structure 1 is configured to include a base portion 10, a lower bracket 100 as a first bracket, a front bracket 200 as a second bracket, and a sub-bracket SB. In the drive unit DA, an adjacent member AD is disposed adjacent to the front bracket 200 on the front side of the protective structure 1. The adjacent member AD is, for example, an oil filter or an oil cooler. The adjacent member AD is an object that hits the protective structure 1 when a collision occurs with the vehicle V.

[0020] Inside the protective structure 1, as a member to be protected, for example, an air compressor 20 as a device requiring high voltage, is fixed to the base portion 10 via a front bracket 200 and a sub-bracket SB. Specifically, for example, a front bracket 200 is provided on the front side of the protective structure 1 for the air compressor 20, and a sub-bracket SB is provided on the rear side of the protective structure 1 for the air compressor 20. A pedestal 21 and a pedestal 22 are formed on the upper and lower sides of the air compressor 20. The air compressor 20 is sandwiched between the front bracket 200 and the sub-bracket SB in the front-rear direction of the protective structure 1 and is fixed by bolts or the like via the pedestals 21 and 22. The air compressor 20 is fixed to the base portion 10 via the front bracket 200 and the sub-bracket SB.

[0021] (Regarding the base part 10) The base unit 10 is, for example, an internal combustion engine provided in the drive unit DA, and disperses the impact of a collision to the frame unit FL when a collision occurs. The base unit 10 is firmly fixed to the frame unit FL.

[0022] (About the sub-bracket SB) The sub-bracket SB is provided at the rear side of the protective structure 1 for the air compressor 20, and the air compressor 20 is sandwiched between the front bracket 200 and the sub-bracket SB, and the air compressor 20 is fixed in the fore-and-aft direction of the protective structure 1 with bolts or the like. The sub-bracket SB is fixed to the base portion 10 via a lower bracket 100 at the rear side of the protective structure 1 by means of bolts or the like. The sub-bracket SB is, for example, a casting made of a strong member such as a metal.

[0023] (About the Lower Bracket 100) A lower bracket 100 serving as a first bracket is fixed to the base portion 10 . The lower bracket 100 is, for example, a casting made of a strong material such as metal. 2(c), the lower bracket 100 is placed on the upper side of the base portion 10 and is provided so as to cover the lower side of the air compressor 20. The front side of the lower bracket 100 in the protective structure 1 is bent into a substantially L-shape along the base portion 10.

[0024] The lower bracket 100 is fixed to the base portion 10 by bolts or the like. The upper side of the lower bracket 100 is provided with a plurality of bolt holes penetrating from the top to the bottom, and as shown in FIG. 2(a), the lower bracket 100 is fixed to the base portion 10 by bolts B11 to B13. The front side of the protective structure 1 of the lower bracket 100 has multiple bolt holes that penetrate from the front side to the rear side of the protective structure 1, and is fixed to the base portion 10 by bolts B14 to B15, as shown in Figure 2(b). The lower bracket 100 is provided with a plurality of bolt holes through which the front bracket 200 and the sub-bracket SB are fixed to the base portion 10 by bolts or the like.

[0025] (Regarding the front bracket 200) A front bracket 200 as a second bracket fixes and supports an air compressor 20 as a member to be protected, and is fixed to the base portion 10 via a lower bracket 100 . The front bracket 200 is formed, for example, by casting made of a strong member such as metal. The front bracket 200 is disposed on the front side of the protective structure 1 for the air compressor 20, and is provided so as to cover the air compressor 20 in the up, down, left and right directions.

[0026] Front bracket 200 has a plurality of bolt holes penetrating from the front side to the rear side of protective structure 1 to which air compressor 20 is fixed. Bolts BA1 to BA3 of front bracket 200 pass through pedestals 21 and 22, and air compressor 20 is fixed by sandwiching it between front bracket 200 and sub-bracket SB. A plurality of bolt holes penetrating from the front side to the rear side of the protective structure 1 are provided on the front side of the front bracket 200. As shown in Fig. 2(b), the front bracket 200 is fixed to the base portion 10 by bolts B21 to B23, which penetrate the lower bracket 100. The front bracket 200 is fixed to the base portion 10 in surface contact with the lower bracket 100. The bolts B21 to B23 that fix the front bracket 200 to the base portion 10 face in a different direction from the bolts B11 to B13 that fix the lower bracket 100 to the base portion 10. Specifically, for example, the bolts B21 to B23 are arranged from the front side to the rear side of the protective structure 1, and the bolts B11 to B13 are arranged from the top to the bottom as shown in FIG.

[0027] As shown in FIG. 3, the front bracket 200 is formed with a contact portion 210 that protrudes toward an adjacent member AD disposed adjacent to the front bracket 200. The contact portion 210 is formed integrally with the front bracket 200 by a strong member such as a metal. The contact portion 210 extends in the vertical direction at the left end when viewed from the front side of the protective structure 1, and is bent to the right below the bolt BA3. The contact portion 210 has ribs extending in the vertical direction on the right side of the bolt B23 and between the bolts BA2 and BA3.

[0028] As shown in the hatched portion of Fig. 3, the contact portion 210 has a contact surface SF formed at the front end portion of the protective structure 1. The contact surface SF is formed in the same plane. The bolts B21 to B23 that secure the front bracket 200 face in a direction perpendicular to the contact surface SF. Specifically, the contact surface SF has a surface shape extending in the up, down, left and right directions when viewed from the front side of the protective structure 1. The bolts B21 to B23 secure the front bracket 200 in the front-rear direction of the protective structure 1. Therefore, the bolts B21 to B23 face in a direction perpendicular to the contact surface SF.

[0029] An overlapping portion OR is provided on the rear side of the abutting portion 210, where the abutting portion 210 and the lower bracket 100 at least partially overlap when viewed from the front side of the protective structure 1. Specifically, for example, at the overlapping portion OR, the front bracket 200 and the lower bracket 100 are in surface contact with each other on the rear side of the abutting portion 210, as shown by the thick two-dot chain line in Fig. 3. The front bracket 200, the lower bracket 100, and the base portion 10 are firmly fixed together by bolts B14 to B15 and bolts B21 to B23. In the overlapping area OR shown by the cross-hatched portion in FIG. 3, the lower bracket 100 is disposed so as to overlap the rear side of the abutment portion 210 in the protective structure 1.

[0030] <Actions and Effects> In the protective structure 1 of this embodiment configured as described above, the operation when a collision occurs with the vehicle V and, for example, an adjacent member AD collides in the direction indicated by the arrow AR1 in FIG. 4(a) will be described with reference to FIG. 4.

[0031] When a collision occurs with the vehicle V and the adjacent member AD collides in the direction indicated by the arrow AR1, the collision energy is transmitted in the direction indicated by the arrow AR1 in FIG. 4(a).

[0032] The adjacent member AD collides with the abutment portion 210 of the front bracket 200. The collision energy is dispersed in the directions indicated by the arrows AR2, AR3, and AR4 and transmitted to the rear side of the protective structure 1, as shown in FIG.

[0033] Collision energy moving in the direction of arrow AR2 is transmitted from front bracket 200 to sub-bracket SB via pedestals 21 and 22 in the directions indicated by arrows AR5 and AR6. The collision energy transmitted to sub-bracket SB moves in the direction indicated by arrow AR7, and is then transmitted to and absorbed by base portion 10 via lower bracket 100 in the direction indicated by arrow AR8.

[0034] Collision energy proceeding in the direction of arrow AR3 is transmitted to the upper side surface of lower bracket 100 via front bracket 200. The collision energy is then transmitted to base portion 10 by bolts B11 to B13 which fasten the upper side surface of lower bracket 100 to base portion 10, and bolts BS1 to BS2 which fasten sub-bracket SB, lower bracket 100, and base portion 10 together. Bolts B21 to B23 that secure the front bracket 200 to the base portion 10 face in a different direction from bolts B11 to B13 that secure the lower bracket 100 to the base portion 10. Furthermore, bolts BA1 to BA3 that secure the front bracket 200 to the sub-bracket SB face in a different direction from bolts BS1 to BS2 that secure the sub-bracket SB to the base portion 10. Specifically, for example, bolts B11 to B13 and bolts BS1 to BS2 are fixed to base portion 10 from top to bottom. Collision energy transmitted to the upper surface of lower bracket 100 is transmitted to base portion 10 via bolts B11 to B13 and bolts BS1 to BS2. Therefore, the collision energy is dispersed from the direction indicated by arrow AR3 to the direction indicated by arrow AR8 or arrow AR10 and transmitted to base portion 10. Furthermore, since the front side surfaces of the front bracket 200 and the lower bracket 100 are in close contact with the base portion 10, the movement of the upper side surface of the lower bracket 100 toward the rear side is restricted. Therefore, the collision energy directed toward the rear side of the protective structure 1 and applied to the bolts B11-B13 and BS1-BS2 that secure the lower bracket 100 to the base portion 10 is limited.

[0035] The collision energy in the direction of the arrow AR4 is transmitted to the front side surface of the protective structure 1 of the lower bracket 100 via the front side surface of the protective structure 1 of the front bracket 200, and then to the base portion . The bolts B21 to B23 that secure the front bracket 200 are oriented in a direction perpendicular to the contact surface SF. Specifically, the bolts B21 to B23 secure the front bracket 200 in a straight line toward the direction in which the contact portion 210 protrudes. Therefore, the collision energy transmitted from the contact portion 210 is efficiently transmitted to the base portion 10 in a straight line in the direction of the arrow AR4 via the bolts B21 to B23. A part of the collision energy in the direction of the arrow AR4 is transmitted to the base portion 10 in the direction indicated by the arrow AR9 below the lower bracket 100, which is fixed to the base portion 10 by bolts B14 and B15.

[0036] The collision energy in the directions of the arrows AR3 and AR4 is transmitted via an overlapping portion OR where the abutment portion 210 of the front bracket 200 and the lower bracket 100 overlap. At the overlapping portion OR, the front bracket 200, the lower bracket 100, and the base portion 10 are in surface contact with each other at the front side of the protective structure 1, and are firmly fixed by bolts B21 to B23. The lower bracket 100 and the base portion 10 are further firmly fixed by bolts B14 to B15. The bolts B21 to B23 and the bolts B14 to B15 are fixed to the lower bracket 100 and the base portion 10 from the front to the rear of the protective structure 1. The collision energy transmitted to the front bracket 200 is transmitted to the base portion 10 via the bolts B21 to B23 and the bolts B14 to B15. Furthermore, since the front bracket 200, the lower bracket 100, and the base portion 10 are in surface contact with each other, the collision energy transmitted to the abutment portion 210 is transmitted to the lower bracket 100 and the base portion 10 in the directions of the arrows AR3 and AR4. Therefore, at the overlapping portion OR, the collision energy transmitted to the abutment portion 210 is efficiently transmitted in a linear manner to the base portion 10 and absorbed by the base portion 10 and the frame portion FL.

[0037] Furthermore, when collision energy is transmitted from the adjacent member AD, as shown in Fig. 4(c), the collision energy is transmitted toward the rear side of the protective structure 1 while deforming the abutment portion 210 and the front bracket 200. The lower bracket 100 and the base portion 10 are compressed in the directions of the arrows AR3 and AR4, whereby the collision energy is absorbed. The collision energy transmitted to the abutment portion 210 is further dispersed to the lower bracket 100 and sub-bracket SB via bolts B21-B23 and bolts BA1-BA3 that secure the front bracket 200. The collision energy transmitted to the lower bracket 100 is further dispersed to the base portion 10 via bolts B11-B15. The collision energy transmitted to the sub-bracket SB is further dispersed to the lower bracket 100 and base portion 10 via bolts BS1-BS2. The collision energy is then transmitted to the base portion 10 while being dispersed in the directions indicated by the arrows AR2 to AR10.

[0038] The collision energy transmitted to the base portion 10 is transmitted in the direction indicated by the arrow AR11 and is absorbed by the frame portion FL. Then, the protective structure 1 stops the movement of the adjacent member AD, and the transmission of the collision energy ends.

[0039] As described above, when a collision occurs with the vehicle V and, for example, an adjacent member AD collides toward the protective structure 1, the contact portion 210 absorbs the collision energy, and the protective structure 1 transmits the collision energy to the base portion 10 while dispersing it to the pedestal 21 and 23 of the air compressor 20, the sub-bracket SB, and the lower bracket 100. The protective structure 1 transmits the collision energy to the base portion 10 while dispersing it, thereby allowing the base portion 10 to absorb the collision energy without interfering with the adjacent member AD of the air compressor 20 as the member to be protected.

[0040] As described above, the protective structure 1 of this embodiment comprises a frame part FL that forms the skeleton of the vehicle V, a base part 10 that distributes the impact of a collision to the frame part FL when a collision occurs, a lower bracket 100 as a first bracket fixed to the base part 10, and a front bracket 200 as a second bracket that fixes and supports the air compressor 20 as a protected member to be protected from the impact of a collision, and is fixed to the lower bracket 100 and to the base part 10 via the lower bracket 100, and the front bracket 200 is formed with a contact part 210 that protrudes toward an adjacent member AD arranged adjacent to the front bracket 200, and when viewed from the side from which the contact part 210 protrudes, at least a portion of the contact part 210 and the lower bracket 100 are arranged to overlap at the overlapping part OR. That is, when a collision occurs in the vehicle V, for example, when the adjacent member AD collides toward the protective structure 1, the collision energy is transmitted to the abutment portion 210 provided on the front bracket 200. The protective structure 1 transmits the collision energy transmitted from the abutment portion 210 to the front bracket 200 to the base portion 10 while dispersing it to the bolts B11 to B15 that fasten the lower bracket 100 to the base portion 10 and the bolts B21 to B23 that fasten the front bracket 200 to the lower bracket 100. Furthermore, at the overlapping portion OR, the front bracket 200 provided with the abutment portion 210 is in surface contact with the base portion 10 via the lower bracket 100, and the front bracket 200, the lower bracket 100, and the base portion 10 are firmly fixed by the bolts. Then, at the overlapping portion OR, the collision energy transmitted to the abutment portion 210 is efficiently transmitted in a linear manner to the base portion 10 and is absorbed by the base portion 10 and the frame portion FL. Therefore, the protective structure 1 can disperse collision energy from the front bracket 200, on which the abutment portion 210 is provided, via the bolts B11-B15 and bolts B21-B23 that fix the lower bracket 100 to the base portion 10, and transmit it to the base portion 10. At the overlapping portion OR, the collision energy transmitted to the front bracket 200 can be efficiently transmitted to the base portion 10. The protective structure 1 transmits collision energy to the base portion 10 while dispersing it, and disperses and absorbs the collision energy in the base portion 10 and the frame portion FL, thereby preventing the adjacent member AD from interfering with the air compressor 20, which is the member to be protected. Therefore, when a vehicle collision occurs, interference with devices that require protection can be effectively prevented.

[0041] In the protective structure 1 according to this embodiment, the fixing direction in which the front bracket 200 is fixed to the lower bracket 100 is oriented in a direction perpendicular to the contact surface SF formed by the protruding contact portion 210. In other words, the collision energy transmitted to the abutment portion 210 is transmitted to the front side surface of the lower bracket 100 via the front side surface of the front bracket 200, and then to the base portion . The bolts B21 to B23 that secure the front bracket 200 are oriented in a direction perpendicular to the contact surface SF. Specifically, the bolts B21 to B23 secure the front bracket 200 in a straight line toward the direction in which the contact portion 210 protrudes. Therefore, the collision energy received by the contact surface SF formed by the protruding contact portion 210 can be efficiently transmitted linearly to the base portion 10 in the direction of the arrow AR4 via the bolts B21 to B23. Therefore, when a vehicle collision occurs, interference with devices that require protection can be effectively prevented.

[0042] In the protective structure 1 according to this embodiment, at least a part of the fixing direction in which the lower bracket 100 is fixed to the base portion 10 is oriented in a direction different from the fixing direction in which the front bracket 200 is fixed to the lower bracket 100. That is, the bolts B21 to B23 and BS1 to BS2 that fix the front bracket 200 to the base portion 10 face in a different direction from the bolts B11 to B13 that fix the lower bracket 100 to the base portion 10. Specifically, for example, the bolts B11 to B13 and the bolts BS1 to BS2 are fixed to the base portion 10 from the top to the bottom. Then, the collision energy transmitted to the upper side surface of the lower bracket 100 is transmitted to the base portion 10 via the bolts B11 to B13 and the bolts BS1 to BS2. Then, the collision energy is converted from the front-to-rear direction in the protective structure 1 to the top-to-bottom direction and transmitted to the base portion 10. Therefore, the protective structure 1 changes the direction of the collision energy transmitted from the front bracket 200 to the lower bracket 100 and transmits it to the base portion 10, so that the protective structure 1 can limit the collision energy transmitted to the base portion 10. Then, the base portion 10 can efficiently absorb the collision energy. Therefore, when a vehicle collision occurs, interference with devices that require protection can be effectively prevented.

[0043] Although an embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and designs that do not deviate from the gist of the present invention are also included. [Explanation of symbols]

[0044] 1;Protective structure 10; Base section 20;Air compressor 21; Pedestal 22; Pedestal 23; Pedestal 100;Lower bracket 200;Front bracket 210; Receiving part FL: Frame section OR;Duplicates SB; Sub bracket SF; V; Vehicle

Claims

1. A frame portion that forms the skeleton of the vehicle; a base portion that disperses a shock caused by a collision to the frame portion when a collision occurs; a first bracket fixed to the base portion; a second bracket that fixes and supports a member to be protected from an impact caused by a collision and is fixed to the first bracket; Equipped with The second bracket is formed with a contact portion protruding toward an adjacent member disposed adjacent to the second bracket, A protective structure, characterized in that, when viewed from the side from which the contact portion protrudes, the contact portion and the first bracket are at least partially overlapped.

2. The protective structure according to claim 1, characterized in that the fixing direction in which the second bracket is fixed to the first bracket is oriented in a direction perpendicular to the contact surface formed by the protruding contact portion.

3. The protective structure according to claim 2, characterized in that at least a portion of the fixing direction in which the first bracket is fixed to the base portion faces a direction different from the fixing direction of the second bracket to the first bracket.

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