JP2006199102A - Car body front structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adopt layout in which various parts are densely disposed in an engine compartment and effectively prevent damage to a fuel system filter device in the case of a head-on collision in a car body front structure having the engine compartment formed in the car body front. <P>SOLUTION: This car body front structure includes: a vacuum booster 11 for a brake disposed in the rear part in the engine compartment formed in the car body front; the fuel system filter device disposed in front of the vacuum booster 11; and a protector member 13 in which the fuel system filter device 12 is housed, wherein the vacuum booster 11 and the protector member 13 are separated from each other to form a piping/wiring space between them, and fixing holes 17d', 18b for fixing the protector member 13 to the car body are formed like elongated holes extending in the longitudinal direction of the car body, whereby when shock on the rear of the car body is applied to the protector member 13, the protector member 13 can be moved to the rear of the car body in a range of lengths of the fixing holes 17d', 18b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a front body structure of an automobile, and more particularly to a technique for disposing a fuel system filter device in an engine room.

  The engine room of automobiles must be configured more compactly in order to secure a larger cabin space, and it is necessary to adopt a layout in which the engine and various related parts are arranged closely in the engine room. is there. On the other hand, in an automobile having an engine room formed in the front part of the vehicle body, it is necessary to reduce damage to various parts in the engine room at the time of the front collision. Especially, for fuel system parts represented by fuel system filter devices, In order to prevent fuel leakage, the damage needs to be minimized. As a technique for preventing damage to the fuel system filter device at the time of a collision, for example, the technique of Patent Document 1 has been proposed.

JP-A-11-287128

  However, the one described in Patent Document 1 is to prevent damage to the drainage drain of the sedimentator unit, and the damage prevention of the entire cementor unit depends on the protector member that has been used conventionally, that is, No attention has been paid to preventing damage to the entire fuel system filter device. A certain effect can be expected to prevent damage by the protector member, but it is not always sufficient.

  Accordingly, an object of the present invention is to provide a fuel system filter device at the time of a front collision while enabling the adoption of a layout in which various parts are densely arranged in the engine room in a vehicle body front part structure in which an engine room is formed in the vehicle body front part. It is to effectively prevent damage.

  According to the present invention, a vacuum booster for a brake disposed in a rear side portion in an engine room formed in a front portion of a vehicle body, and a fuel system filter device disposed in front of the vacuum booster. And a protector member that is fixed to the vehicle body and in which the fuel filter device is housed, a piping / wiring space is formed between the vacuum booster and the protector member. The fixing holes for fixing the protector member to the vehicle body are formed in a long hole shape extending in the longitudinal direction of the vehicle body, and an impact to the rear of the vehicle body acts on the protector member In addition, a vehicle body front structure is provided in which the protector member is movable rearward within the range of the length of the fixing hole.

  According to this configuration, since the fuel system filter device moves to the rear of the vehicle body together with the protector member at the time of a front collision, damage to the fuel system filter device can be effectively prevented. Since the fuel system filter device moves within the range of the length of the fixing hole, the fuel system filter device and the vacuum booster device do not collide with the vacuum booster disposed behind the fuel system filter device. Both can be protected from the impact of the front impact. Further, since the fuel system filter device is disposed in front of the vacuum booster, workability such as maintenance is maintained, and a space between the fuel system filter device and the vacuum booster is connected to a pipe.・ Because it becomes a wiring space, adoption of a layout in which various parts are densely arranged in the engine room is not prevented.

  Therefore, according to the present invention, in the vehicle body front part structure in which the engine room is formed in the vehicle body front part, it is possible to adopt a layout in which various parts are densely arranged in the engine room, and the fuel system filter device at the time of the front collision Can be effectively prevented.

  In the present invention, the fuel system filter device may be a cementer unit having a priming pump.

  Since the workability of the fuel filter device is maintained as described above, the present invention is particularly suitable for a cementor unit that requires a fuel supply operation by a priming pump and a water drain operation.

  Further, in the present invention, one of an air cleaner and a battery is disposed in front of the segmenter unit, and the region in the engine room opposite to the region where the engine unit is disposed is sandwiched in the engine room. A configuration in which an air cleaner or the other of the batteries is disposed may be employed.

  According to this configuration, it is possible to protect the cementer unit at the time of a collision while considering the arrangement of an air cleaner and a battery that occupy a relatively large space in the engine room.

  Further, in the present invention, the engine is a cross-flow engine mounted vertically, and a battery, the cementor unit, and the vacuum doubler are arranged in a region on the intake side of the engine in the engine room from the front of the vehicle body. Force devices are sequentially arranged in the front-rear direction of the vehicle body, and a turbocharger and an air cleaner attached to an exhaust side of the engine are arranged in an exhaust region of the engine in the engine room. It is also possible to adopt a configuration that is provided.

  According to this configuration, it is possible to rationally arrange the auxiliary machines in the engine room while realizing protection of the cementor unit at the time of a collision.

  Further, in the present invention, the protector member is fixed to the vehicle body via a bracket provided on the side in the vehicle width direction, and the body of the segmenter unit has a gap with the protector member. It is also possible to employ a configuration in which the mounting portion is attached to the protector member, and the mounting portion is provided only on the side portion in the vehicle width direction of the cementor unit.

  According to this configuration, since the protector member is fixed to the vehicle body via the bracket provided on the side in the vehicle width direction, the protector member is compared with the case where the bracket is provided in the vehicle body front-rear direction. After the member and the segmenter unit are moved within the range of the length of the fixing hole, the bracket unit can be more effectively protected by the bending of the bracket. Further, the cementer unit is attached to the protector member such that a body portion thereof has a gap with the protector member, and the attachment portion is provided only on a side portion of the cementer unit in a vehicle width direction. Therefore, the impact to the said cementer unit via the said protector member is buffered, and the said segmenter unit can be protected more effectively.

  Further, in the present invention, the protector member may be configured to be fixed to the vehicle body at a lower portion on the lateral side of the cementer unit in the vehicle width direction and a lower portion on the rear side of the vehicle body.

  According to this configuration, it is possible to secure a movement space to the rear of the vehicle body while preventing the collapser unit from falling backward.

  In the present invention, it is preferable that the pipe passing through the pipe / wiring space is a flexible pipe having a metal pipe provided in a rear part of the cementer unit.

  According to this configuration, when the protector member and the segmenter unit are moved backward, the interference portion with the pipe is the metal pipe, so that the pipe can be protected and the pipe can be a flexible pipe. By doing this, the back movement of the protector member and the cementor unit is not hindered.

  As described above, according to the present invention, in the vehicle body front part structure in which the engine room is formed in the vehicle body front part, it is possible to adopt a layout in which various parts are densely arranged in the engine room, and the fuel at the time of the front collision It is possible to effectively prevent damage to the system filter device.

  FIG. 1 is a plan view showing a vehicle body front part structure A according to an embodiment of the present invention. The vehicle body front structure A includes a body 2 that defines an engine room 1. In addition, the vehicle body front part structure A of the same figure has shown the aspect which removed the fender and the bonnet. The engine 3 is mounted in a vertical position with a crankshaft (not shown) facing in the longitudinal direction of the vehicle body at the approximate center of the engine room 1. In this embodiment, a diesel-type crossflow engine is assumed as the engine 3, and the exhaust side 31 of the engine 3 is located on the left side of the vehicle body, and the intake side 32 is located on the right side of the vehicle body. Therefore, the engine room 1 is divided into the region 21 on the exhaust side 31 and the region 22 on the intake side 32 with the engine 3 as a boundary.

  A supercharger 4 is provided on the exhaust side 31 of the engine 3. In the present embodiment, the supercharger 4 is a turbocharger including a turbine chamber 4a and an impeller chamber 4b.

  An air cleaner 5 is disposed on the side of the engine 3 in the vehicle width direction. In the case of the present embodiment, the air cleaner 5 is disposed on the wheel house 2a in the region 21 on the exhaust side 31 of the engine 3 out of the two wheel houses 2a and 2b of the body 2 formed on the side in the engine room 1. It is installed. The air cleaner 5 filters air sucked from an air intake 6 provided on the left side of the body 2. The filtered air is introduced into the impeller chamber 4b of the supercharger 4 and supplied to an intake manifold (not shown) on the intake side 32 of the engine 3 through the pipe 7a, the intercooler 7b, and the pipe 7c.

  A vacuum tank 8 supported on the wheel house 2a is disposed on the rear side of the vehicle body of the air cleaner 5. The vacuum tank 8 is connected to a vacuum pump 9 driven by the driving force of the engine 3 via a pipe 10, and accumulates negative pressure generated by the vacuum pump 9, and the negative pressure is applied to the intake side 31 of the engine 3. It is supplied to various control valves provided, the vacuum booster 11 of the brake, the supercharger 4 and the like, and serves as an operating source thereof.

  The vacuum booster 11 is disposed on the rear side in the engine room 1. In this embodiment, the vacuum booster 11 is disposed in the region 22 on the intake side 32 of the engine 3. In front of the vacuum booster 11, there is disposed a cementer unit 12, which is a fuel system filter device. This cementer unit 12 filters fuel from a fuel tank (not shown) and supplies it to the engine 3 and is housed in a protector member 13 fixed to the vehicle body 2. The vacuum booster 11 and the protector member 13 are spaced apart so that a piping / wiring space is formed between them. In the present embodiment, this piping / wiring space is a passage space for the piping 141, 142 of the reservoir tank 14. The reservoir tank 14 is a power steering reservoir tank that stores power steering hydraulic oil, and is supported on the wheel house 2b.

  In this embodiment, each of the pipes 141 and 142 is a flexible pipe made of a resin pipe or the like, but the pipe 141 is provided with a metal pipe 141 a at the rear portion of the digester unit 12. As will be described later, in the present embodiment, a configuration is adopted in which the protector member 13 and the segmenter unit 12 move rearward at the time of a front collision, and the protector member 13 and the pipe 141 may interfere with each other during the rearward movement. Therefore, by providing the metal pipe 141a in the pipe 141, the interference portion between the protector member 13 and the pipe 141 becomes the metal pipe 141a, and the pipe 141 can be protected. Further, by making the pipe 141 a flexible pipe, the rearward movement of the protector member 13 and the cementer unit 12 is not hindered.

  The metal tube 141a may be provided so as to cover the flexible tube constituting the pipe 141, or may be configured to connect the flexible tube to both ends of the metal tube 141a without covering. Also good. Further, such a metal pipe 141 a may be provided also in the pipe 142 passing behind the pipe 141 in the pipe / wiring space.

  Next, a battery 15 is disposed in front of the cementer unit 12. In the present embodiment, since the engine 3 including the supercharger 4 is assumed, the air cleaner 5 is disposed in the region 21 on the exhaust side 31. The battery 15 can be disposed in front of the mentor unit 12. In this case, the battery 15 is disposed in a region 21 on the exhaust side 31, which is a region opposite to the region 22, which is the region where the engine unit 3 is sandwiched. It can be arranged. With such a configuration, as will be described later, the protector unit 12 can be protected at the time of collision while considering the arrangement of the air cleaner 5 and the battery 15 that occupy a relatively large space in the engine room 1.

  Next, in the present embodiment, a configuration in which the battery 15, the digester unit 12, and the vacuum booster 11 are sequentially arranged in the front-rear direction of the vehicle body in the region 22 on the intake side 32 of the engine 3 in the engine room 1 from the front of the vehicle body. It is said. Further, the turbocharger 4 attached to the side of the exhaust side 31 of the engine 3 and the air cleaner 5 are disposed in a region 21 on the exhaust side 31 of the engine 3 in the engine room 1. . With this configuration, these auxiliary machines in the engine room 1 can be arranged rationally, and protection of the cementor unit 12 at the time of a front collision can be realized as will be described later.

  Next, the cementer unit 12 and the protector member 13 will be described. FIG. 2A is a partially broken front view (viewed from the front of the vehicle body) of the cementor unit 12 and the protector member 13, and FIG. 2B is a partially broken side view of the sedimentor unit 12 and the protector member 13. (Viewed from the engine 3 side). First, the cementer unit 12 will be described.

  The cementer unit 12 includes a trunk portion 121, a priming pump 122 provided on the upper portion of the trunk portion 121, and a drainage drain 123 provided on the lower portion of the trunk portion 121. The body 121 stores a filter medium for filtering the fuel, and the fuel introduced from the introduction pipe 124a is filtered and then discharged from the discharge pipe 124b. The priming pump 122 is for sending fuel into the engine 3 by manually pressing the button on the upper part when the fuel runs out.

  The drain 123 is for discharging the water separated from the fuel and stored in the body 121. In the present embodiment, the cementer unit 12 is disposed in front of the vacuum booster 11, and can be easily reached by opening a bonnet (not shown). Therefore, workability of fuel supply operation and water drainage operation by these priming pumps 122 is ensured.

  The cementer unit 12 is provided with an attachment portion 125 on the side in the vehicle width direction above the trunk portion 121 and is attached to the protector member 13 via an L-shaped bracket 16. The cementer unit 12 is attached to the protector member 13 so that the body 121 has a protector member 13 and a gap S surrounding the body 121. In the present embodiment, the protector unit 12 includes the protector unit 12 alone. Attached to and supported by member 13.

  Next, the protector member 13 and its mounting structure to the vehicle body will be described with reference to FIGS. 2 (a) and 2 (b) and FIG. FIG. 3 is an exploded perspective view of the protector member 13 and its attachment parts. The protector member 13 has a substantially cylindrical shape as a whole, is fixed to the vehicle body via brackets 17 and 18, and is fixed on the wheel house 2b in this embodiment. A mounting portion 13a for the bracket 16 and the bracket 17 is formed on the upper portion of the protector member 13. Further, an attachment portion 13b for the bracket 17 is formed at the lower portion of the protector member 13.

  The bracket 17 is provided with an attachment shaft 17a at an upper portion thereof, and a hole 13a 'of the attachment portion 13a of the protector member 13 and a hole 16a of the bracket 16 are inserted into the attachment shaft 17a, and a fastener is provided from the upper end portion of the attachment shaft 17a. By fitting 17a ′ (see FIG. 2A), the brackets 16 and 17 and the protector member 13 are fixed to each other. A mounting portion 17b having a hole 17b 'is formed in the lower portion of the bracket 17, and this mounting portion 17b is overlapped with the mounting portion 13b of the protector member 13, and a bolt is inserted into the holes 17b' and 13b 'to attach the mounting portion. 13b is fixed. Accordingly, the protector member 13 is supported by the bracket 17 at the attachment portion 13a and the attachment portion 13b.

  A fixing portion 17 c having a hole 17 c ′ is formed at a lower side of the bracket 17 in the vehicle width direction (outside), and the fixing portion 17 c is attached to the bracket 18. The bracket 18 is positioned on the side of the protector member 13 in the vehicle width direction when the cementor unit 12 and the protector member 13 are mounted on the vehicle. The bracket 18 includes a hole 18a for fixing the bracket 18 on the wheel house 2b and a fixing hole 18b for fixing the protector member 13 to the vehicle body. The hole 18a and the fixing hole 18b are mutually spaced from each other in the vehicle width. Located in the direction. As shown in FIG. 2A, the bracket 18 is fixed on the wheel house 2b by inserting a bolt into the hole 18a.

  The fixing hole 18b is formed in a long hole shape extending in the longitudinal direction of the vehicle body. A bolt is inserted into the hole 17c ′ of the fixing portion 17c of the bracket 17 and the fixing hole 18b and fastened to the bracket 17. The bracket 18 is fixed, that is, the protector member 13 is fixed on the wheel house 2b via the brackets 17 and 18. In addition, since the fixing hole 18b has a long hole shape, the bolt can be inserted and fastened in the range from the front end portion to the rear end portion, but the bolt is inserted into the rear end portion and fastened.

  A fixing portion 17d having a fixing hole 17d 'for fixing the protector member 13 to the vehicle body is formed at the lower part of the bracket 17 at the rear of the vehicle body. The fixing portion 17d is attached to the wheel house 2b.

  Similarly to the fixing hole 18b, the fixing hole 17d 'is formed in a long hole shape extending in the longitudinal direction of the vehicle body, and a bolt is inserted into the fixing hole 17b' to be fastened. The protector member 13 is fixed on the wheel house 2b. Since the fixing hole 17b 'is also a long hole, the bolt can be inserted and fastened in the range from the front end portion to the rear end portion. However, as shown in FIG. Is inserted and concluded. In the present embodiment, the fixing holes 17b 'and 18b have substantially the same length in the longitudinal direction of the vehicle body.

Thus, in this embodiment, the protector member 13 is fixed on the wheel house 2b at the fixing portions 17c and 17d of the bracket 17, that is,
When the cementer unit 12 and the protector member 13 are mounted on the vehicle, the lower part of the side of the cementer unit 12 in the vehicle width direction and the lower part of the rear of the vehicle body are fixed to the vehicle body.

  Next, the effect | action at the time of the front collision of the vehicle body front part structure A which consists of such a structure is demonstrated. In the present embodiment, fixing holes 17d 'and 18b for fixing the protector member 13 to the vehicle body are formed in a long hole shape extending in the longitudinal direction of the vehicle body. Therefore, when a part or the like collides with the protector member 13 at the time of a front collision and an impact to the rear of the vehicle body acts, the bracket 17 on which the protector member 13 and the cementer unit 12 are mounted is relatively relative to the vehicle body. The protector member 13 and the segmenter unit 12 are moved rearward along with the bracket 17 together with the bracket 17. For this reason, it is possible to effectively prevent the damage by buffering the impact on the cementer unit 12. Since there is a gap S between the body 121 of the cementer unit 12 and the protector member 13, the protector member 13 serves as a cushioning material, and the damage to the sedimentor unit 12 can be further prevented.

  Here, since the fixing holes 17d 'and 18b are formed in a long hole shape, the rearward movement of the bracket 17 is limited to the range of the length of the fixing holes 17d' and 18b. Therefore, it does not collide with the vacuum booster 11 arranged behind the cementer unit 12, and both the cementor unit 12 and the vacuum booster 11 can be protected from the impact at the time of the front collision. Further, since the cementer unit 12 is disposed in front of the vacuum booster 11, workability such as maintenance is maintained.

  In the present embodiment, the space between the protector unit 13 and the vacuum booster 11 is separated in order to secure the backward movement space of the protector member 13 and the cementor unit 12, but as described above, Since the space with the vacuum booster 11 can be used as a piping / wiring space, adoption of a layout in which various parts are densely arranged in the engine room 1 is not hindered.

  Further, in the present embodiment, as described above, the protector member 13 is fixed to the vehicle body at the lower part (fixed part 17c) on the side in the vehicle width direction of the cementor unit 12 and the lower part (fixed part 17d) at the rear of the vehicle body. Yes. By fixing the protector member 13 to the vehicle body at the lower part (fixed portion 17d) at the rear of the vehicle body, it is possible to prevent the fall of the segmenter unit 12 to the rear of the vehicle body, and the fixed portions 17c and 17d are directly behind the protector member 13. Therefore, a space for moving to the rear of the vehicle body can be secured.

  Further, in the fixing in the lower part (fixing portion 17c) on the side in the vehicle width direction, the bracket (18) is fixed to the vehicle body via the bracket 18 provided on the side in the vehicle width direction of the protector member 13. Compared to the case where the protector member 13 and the segmenter unit 12 are moved in the range of the lengths of the fixing holes 17d ′ and 18b, compared to the case where they are provided in the longitudinal direction of the vehicle body, It can be effectively protected.

  That is, in this embodiment, the cementer unit 12 moves only within the range of the lengths of the fixing holes 17d ′ and 18b, and eventually stops moving, but the fixing portion 17c (or the fixing portion 17d) is connected to the There is a possibility that the impact at the time of stopping will become large if it exists right behind. In the present embodiment, by providing the fixed portion 17c and the bracket 18 on the side without being provided on the rearward movement line of the cementer unit 17, the shock at the time of the rearward movement stop can be buffered by utilizing the bending of the bracket 18.

  Further, since the cementer unit 17 is supported by the protector member 13 only at the attachment portion 125 at the side portion in the vehicle width direction, the protector unit 17 is more protected than when the attachment portion 125 is provided at the side portion in the vehicle body front-rear direction. The impact at the time of a frontal collision input to the cementer unit 12 through the member 13 can be avoided from the center of the segmenter unit 12, and the impact on the cementer unit 12 can be buffered.

  In the present embodiment, the fixing holes 17d ′ and 18b each having a long hole shape are used for fixing between the bracket (17) and the bracket (18) and between the bracket (17) and the vehicle body, respectively. You may use for fixation between a bracket and a protector member.

It is a top view which shows the vehicle body front part structure A which concerns on one Embodiment of this invention. (A) is a partially broken front view (viewed from the front of the vehicle body) of the cementor unit 12 and the protector member 13, and (b) is a partially broken side view of the sedimentor unit 12 and the protector member 13 (from the engine 3 side). Viewed). It is a disassembled perspective view of the protector member 13 and its attachment components.

Explanation of symbols

A Car body front structure 1 Engine room 3 Engine 4 Supercharger 5 Air cleaner 11 Vacuum booster 12 Segimentor unit 122 Priming pump 13 Protector member 15 Battery 17d ', 18b Fixing hole 141a Metal tube

Claims (7)

A brake vacuum booster disposed on the rear side of the engine room formed at the front of the vehicle body, a fuel system filter device disposed in front of the vacuum booster, and fixed to the vehicle body A vehicle body front structure having a protector member in which the fuel system filter device is housed,
Between the vacuum booster and the protector member, both are arranged apart so that a piping / wiring space is formed,
A fixing hole for fixing the protector member to the vehicle body is formed in a long hole shape extending in the longitudinal direction of the vehicle body, and when an impact to the rear of the vehicle body acts on the protector member, the protector member is A vehicle body front structure characterized in that the vehicle can move backward in the length range.   The vehicle body front structure according to claim 1, wherein the fuel system filter device is a cementer unit having a priming pump. One of an air cleaner and a battery is disposed in front of the cementer unit,
The vehicle body front structure according to claim 2, wherein the other of the air cleaner and the battery is disposed in a region opposite to the region where the engine unit is disposed in the engine room. . The engine is a crossflow engine mounted vertically,
In the engine room, in a region on the intake side of the engine, a battery, the cementer unit, and the vacuum booster are sequentially arranged in the longitudinal direction of the vehicle body from the front of the vehicle body,
4. A turbocharger attached to a side portion on the exhaust side of the engine and an air cleaner are disposed in a region on the exhaust side of the engine in the engine room. Vehicle body front structure described in 2. The protector member is
It is fixed to the vehicle body via a bracket provided on the side in the vehicle width direction,
The cementer unit is
The body has an attachment portion that is attached to the protector member such that the body portion has a gap with the protector member,
The vehicle body front part structure according to any one of claims 2 to 4, wherein the attachment portion is provided only on a side portion in the vehicle width direction of the cementer unit. The protector member is
The vehicle body front structure according to any one of claims 2 to 5, wherein the vehicle body front portion structure is fixed to the vehicle body at a lower portion on the side in the vehicle width direction of the cementer unit and a lower portion on the rear side of the vehicle body.   The vehicle body front according to any one of claims 2 to 6, wherein the pipe passing through the pipe / wiring space is a flexible pipe provided with a metal pipe at a rear portion of the cementer unit. Part structure.

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