阅读说明：本技术 托架 (Bracket ) 是由 市川小月 田中俊 于 2019-06-17 设计创作，主要内容包括：本发明提供一种托架,具体提供一种在保护发动机的燃料系统部件的托架中能够有效地避免因碰撞时产生的外力而发生车体部件与燃料系统部件接触的情况的结构。托架(5)具备：紧固部(70),其通过紧固部件(90)而被固定于发动机(1)侧；以及保护部(50),其配置在高压燃料泵(燃料系统部件)(20)和与该高压燃料泵(20)对置的车体框架(车体部件)(2)之间,保护部(50)从紧固部(70)连续并覆盖高压燃料泵(20)。保护部(50)具有：倾斜部(52),其随着向远离车体框架(2)的方向前进而靠向上方；以及曲面部(51),其在紧固部(70)与倾斜部(52)之间弯曲。(The invention provides a bracket, in particular to a structure which can effectively avoid the situation that a vehicle body part is contacted with a fuel system part due to external force generated during collision in the bracket for protecting the fuel system part of an engine. The bracket (5) is provided with: a fastening section (70) that is fixed to the engine (1) side by a fastening member (90); and a protective section (50) that is disposed between the high-pressure fuel pump (fuel system component) (20) and a vehicle body frame (vehicle body component) (2) that faces the high-pressure fuel pump (20), the protective section (50) covering the high-pressure fuel pump (20) continuously from the fastening section (70). The protection unit (50) has: an inclined portion (52) that is pushed upward as it advances in a direction away from the vehicle body frame (2); and a curved surface part (51) which is bent between the fastening part (70) and the inclined part (52).)

1. A bracket for protecting a fuel system component mounted to an engine,

the bracket is characterized by comprising:

a fastening portion fixed by a fastening member; and

a protective portion that is disposed between the fuel system component and a vehicle body component that is opposed to the fuel system component, the protective portion being continuous from the fastening portion and covering the fuel system component,

the protection part has:

an inclined portion that is inclined upward as the vehicle body member advances in a direction away from the vehicle body member; and

a curved surface portion that is curved between the fastening portion and the inclined portion.

2. The cradle of claim 1,

an upper end of the inclined portion, which is an uppermost end of the inclined portions, is located above a lower end of the vehicle body member, which is a lowermost end of a portion of the vehicle body member facing the bracket.

3. The cradle of claim 2,

the lower end of the vehicle body member is located above the lower end of the inclined portion, which is the lowermost end of the inclined portion.

Technical Field

The present invention relates to a bracket for protecting a fuel system component.

Background

Conventionally, there is known a technique relating to a bracket for protecting a fuel system component such as a high-pressure fuel pump for supplying fuel to an engine. Patent document 1 describes such a technique.

Patent document 1 relates to a structure for protecting a fuel supply system component of an engine, which protects the fuel supply system component attached to a cylinder head cover of the engine by a protector. A protector having a protection structure of patent document 1 is disclosed as having a structure including: a main wall portion that covers the fuel supply system component from a load input direction that is an input direction of the collision load; a fastening portion fastened to the head cover on one side in a vertical direction, which is an arbitrary direction perpendicular to the load input direction; and another end portion that is adjacent to the thick portion of the head cover on the other side in the vertical direction and has a predetermined gap with the thick portion, and that, when a collision load is input, abuts against the thick portion of the head cover and supports the collision load together with the anchor portion.

Disclosure of Invention

Regulations or requirements for safety against collision are strict year by year, and brackets for protecting fuel system components such as fuel pumps are required to have high strength. As a method for avoiding contact between another vehicle body member and the fuel system member due to collision or the like, it is also conceivable to provide a bracket with an inclined portion and slide the inclined portion to avoid contact between the fuel system member and the vehicle body member. However, even in such a case, the bracket is required to have high rigidity against a load when the vehicle body member is in contact.

The invention aims to provide a structure which can effectively avoid the contact between a vehicle body component and a fuel system component caused by external force generated during collision in a bracket for protecting the fuel system component of an engine.

(1) The present invention relates to a bracket (for example, a bracket 5 described later) for protecting a fuel system component (for example, a high-pressure fuel pump 20 described later) attached to an engine (for example, an engine 1 described later), the bracket including: a fastening portion (e.g., a fastening portion 70 described later) that is fixed by a fastening member (e.g., a fastening member 90 described later); and a protective portion (for example, a protective portion 50 described later) that is disposed between the fuel system component and a vehicle body component (for example, a vehicle body frame 2 described later) that faces the fuel system component, the protective portion being continuous from the fastening portion and covering the fuel system component, the protective portion including: an inclined portion (for example, an inclined portion 52 described later) which is inclined upward as it goes in a direction away from the vehicle body member; and a curved surface portion (for example, a curved surface portion 51 described later) that is curved between the fastening portion and the inclined portion.

Thus, when the vehicle body member approaches the fuel system member due to external force or the like, the vehicle body member can be reliably brought into contact with the bracket. Further, the inclined portion having the spherical and highly rigid protective portion can reliably guide the vehicle body member upward, and can effectively avoid contact with the fuel system member. Further, noise and vibration can be reduced by increasing the rigidity of the bracket. Further, since the inclined portion is bent and expanded in the width and height directions, the object to be collided (for example, a vehicle body member) is set to be in contact with the inclined portion as necessary, and therefore, the entire protection object can be not covered.

(2) In the bracket according to (1), preferably, an upper end of the inclined portion, which is an uppermost end of the inclined portions, is located above a lower end of the vehicle body member, and the lower end of the vehicle body member is a lowermost end of a portion of the vehicle body member facing the bracket.

This makes it possible to guide the vehicle body member that moves due to the external force upward more reliably, and to avoid contact between the vehicle body member and the fuel system member more reliably.

(3) In the bracket according to (2), preferably, the lower end of the vehicle body member is located above a lower end of an inclined portion that is a lowermost end of the inclined portion.

This makes it possible to more reliably bring the vehicle body member into contact with the inclined portion, and to more reliably avoid damage to the fuel system member.

Effects of the invention

According to the structure of the bracket of the present invention, the contact between the vehicle body member and the fuel system member due to the external force generated at the time of collision can be effectively avoided.

Drawings

Fig. 1 is a perspective view showing an engine using a bracket according to an embodiment of the present invention, as viewed from obliquely above.

Fig. 2 is an enlarged perspective view showing a high-pressure fuel pump and a bracket as fuel system components mounted on the engine of the present embodiment.

Fig. 3 is a right side view of the bracket of the present embodiment.

Fig. 4 is a left side view of the bracket of the present embodiment.

Fig. 5 is a rear view of the bracket of the present embodiment.

Fig. 6 is a plan view of the bracket of the present embodiment.

Fig. 7 is a bottom view of the bracket of the present embodiment.

Fig. 8 is a sectional view showing a positional relationship between the vehicle body frame and the bracket according to the present embodiment.

Fig. 9 is an enlarged perspective view of the bracket fixed to the engine side of the present embodiment as viewed from the back side.

Fig. 10 is an enlarged perspective view of the bracket fixed to the engine side of the present embodiment as viewed from the front.

Description of the reference symbols

1: an engine;

2: a vehicle body frame (vehicle body member);

5: a bracket;

20: a high-pressure fuel pump (fuel system component);

22: a vehicle body frame lower end (vehicle body member lower end);

50: a protection part;

51: a curved surface portion;

52: an inclined portion;

61: the upper end of the inclined part;

62: the lower end of the inclined part;

70: a fastening section;

90: and (3) fastening the components.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing an engine 1 using a bracket 5 according to an embodiment of the present invention, as viewed from obliquely above.

Fig. 1 shows a vehicle engine 1 to which various components such as a high-pressure fuel pump 20 as a fuel system component are mounted. In the present embodiment, a vehicle in which the engine 1 is disposed on the front (Fr) side and the vehicle cabin C is provided behind the engine 1 will be described as an example. Hereinafter, the front, rear, left, and right directions will be described with reference to the front (Fr) of the vehicle as the front side for convenience.

Fig. 2 is an enlarged perspective view showing the high-pressure fuel pump 20 and the bracket 5, which are fuel system components mounted on the engine 1, and is an enlarged view of a rectangular area a surrounded by a chain line of fig. 1. As shown in fig. 2, the high-pressure fuel pump 20 in the state of being attached to the engine 1 is in a state of being covered by the bracket 5.

Next, the structure of the bracket 5 itself will be described. Fig. 3 is a right side view of the bracket 5 of the present embodiment, fig. 4 is a left side view of the bracket 5, fig. 5 is a rear view of the bracket 5, fig. 6 is a plan view of the bracket 5, and fig. 7 is a bottom view of the bracket 5.

As shown in fig. 3 to 7, the bracket 5 of the present embodiment includes, as main components, a protector 50 covering the high-pressure fuel pump 20 and a fastening portion 70 serving as a support portion fixed to the engine 1 side.

The protector 50 has a curved surface 51 bulging outward. The curved surface portion 51 has a shell structure that bulges in a spherical shape on the side opposite to the side facing the high-pressure fuel pump 20 that is the object to be protected. An inclined portion 52 is formed on the upper side of the curved surface portion 51 of the protection portion 50.

The inclined portion 52 constitutes an upper portion of the protection portion 50. Hereinafter, the uppermost end of the inclined portion 52 is referred to as an inclined portion upper end 61, and the lowermost end of the inclined portion 52 is referred to as an inclined portion lower end 62. The inclined portion upper end 61 is located on the front side. The inclined portion lower end 62 is located on the rear side and also overlaps the curved surface portion 51. As shown in fig. 3 and 4, the inclined portion 52 is inclined so as to descend from the front to the rear in the side view. As shown in the rear view of fig. 5 and the plan view of fig. 6, the inclined portion 52 extends from the front to the rear and then curves to one side in the left-right direction (the right side in the paper of fig. 5 and 6). Thus, the inclined portion 52 located at the upper portion of the protecting portion 50 has a shape in which the height thereof gradually decreases from the front to the rear and is surrounded to one side in the left-right direction.

As shown in fig. 7, a plate-shaped bottom wall portion 53 is formed at a lower portion of the protection portion 50. Further, the protection portion 50 is connected to the fastening portion 70. The fastening portion 70 and the protecting portion 50 are continuous in the same material and are an integral component. The fastening portion 70 itself is formed in an elongated plate shape extending in the front-rear direction.

A plurality of fastening holes 71, 72, 73 are formed in the fastening portion 70 at intervals in the front-rear direction. The bracket 5 is fixed to the engine 1 side by inserting and fastening a fastening member such as a bolt described later into these fastening holes 71, 72, 73. The fastening portion 70 is a cantilever support structure of the bracket 5.

As shown in fig. 4, a plurality of ribs 55, 56 are formed on the back surface 54 of the bracket 5. The rib 55 is located in a concave portion of the back surface 54 on the back side of the curved surface portion 51.

The ribs 55 are formed in a substantially linear or substantially circular arc shape, and extend in different directions. For example, a rib 55 is formed in a shape along the end face of the protection portion 50 or in a direction intersecting the inclination direction of the inclined portion 52. Further, several ribs 55 of the plurality of ribs 55 meet and cross. The rib 56 is formed in a substantially circular arc shape so as to connect the fastening hole 71 and the fastening hole 73 in the back surface 54.

Next, the arrangement of the bracket 5 will be described. Fig. 8 is a sectional view showing a positional relationship between the vehicle body frame 2 and the bracket 5 according to the present embodiment. Fig. 9 is an enlarged perspective view of the bracket 5 fixed to the engine 1 side of the present embodiment as viewed from the back side. Fig. 10 is an enlarged perspective view of the bracket 5 fixed to the engine 1 side of the present embodiment as viewed from the front side. In fig. 9 and 10, the high-pressure fuel pump 20 and the like are not shown.

As shown in fig. 8, a seat surface 102 for mounting the high-pressure fuel pump 20 is formed in a pump fixing portion 101 of the engine 1. The high-pressure fuel pump 20 is positioned on the rear surface 54 side of the bracket 5 and is covered with the protective portion 50 of the bracket 5. As shown in fig. 9 and 10, the bracket 5 is fastened and fixed to the pump fixing portion 101 by the fastening member 90.

A vehicle body frame 2 as a vehicle body member is provided on the vehicle cabin C side in the front-rear direction of the high-pressure fuel pump 20. The vehicle body frame 2 faces the high-pressure fuel pump 20 with the bracket 5 therebetween. The front end 21 of the vehicle body frame 2 is located at or near a position in contact with the inclined portion 52 of the bracket 5 and is a portion facing the high-pressure fuel pump 20.

The lowermost end of the front end 21 of the body frame 2 is referred to as a body frame lower end 22. The arrangement of the vehicle body frame lower end 22 is set such that: is located lower than the inclined portion upper end 61 of the bracket 5 and higher than the inclined portion lower end 62. Therefore, even if the vehicle body frame 2 attempts to move in the direction of the outlined arrow in fig. 8 due to an external force, it inevitably comes into contact with the inclined portion 52 of the bracket 5, and therefore movement of the vehicle body frame 2 toward the high-pressure fuel pump 20 is hindered.

As shown by the chain line in fig. 9 and 10, the vehicle body frame 2 that attempts to approach the high-pressure fuel pump 20 due to external force or the like is guided obliquely forward by the inclined portion 52 of the bracket 5, and contact between the vehicle body frame 2 and the high-pressure fuel pump 20 is avoided.

According to the above embodiment, the following effects are obtained.

The bracket 5 of the present embodiment includes: a fastening portion 70 fixed to the engine 1 side by a fastening member 90; and a protective portion 50 disposed between the high-pressure fuel pump (fuel system component) 20 and a vehicle body frame (vehicle body component) 2 facing the high-pressure fuel pump 20, the protective portion 50 being continuous from the fastening portion 70 and covering the high-pressure fuel pump 20. The protection unit 50 includes: an inclined portion 52 that is inclined upward as it goes in a direction away from the vehicle body frame 2; and a curved surface portion 51 curved between the fastening portion 70 and the inclined portion 52.

Thus, when the vehicle body frame 2 approaches the high-pressure fuel pump 20 due to external force or the like, the vehicle body frame 2 can be reliably brought into contact with the bracket 5. Further, the inclined portion 52 having the spherical and highly rigid protector 50 can reliably guide the vehicle body frame 2 upward, and the vehicle body frame 2 can effectively avoid contact with the high-pressure fuel pump 20. Further, noise and vibration can be reduced by increasing the rigidity of the bracket 5. Furthermore, since the inclined portion 52 is curved and expanded in the width and height directions, and thus the collision target object (for example, the vehicle body frame 2) and the inclined portion 52 are set to be in contact with each other without fail, it is possible to form a structure that does not cover the entire protection target.

In the bracket 5 of the present embodiment, the inclined portion upper end 61, which is the uppermost end of the inclined portion 52, is located above the vehicle body frame lower end 22, which is the lowermost end of the front end portion 21 that is the portion of the vehicle body frame 2 facing the bracket 5.

This can more reliably guide the vehicle body frame that moves due to the external force upward, and more reliably avoid contact with the high-pressure fuel pump 20.

In the bracket 5 of the present embodiment, the vehicle body frame lower end 22 is positioned above the lowest inclined portion lower end 62 of the inclined portion 52.

This enables the vehicle body frame 2 to more reliably contact the inclined portion 52 during a collision or the like, and damage to the high-pressure fuel pump 20 can be more reliably avoided.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments and can be modified as appropriate.

In the above embodiment, the bracket 5 is fixed to the engine 1, but the bracket may be fixed to a member other than the engine.

In the above-described embodiment, the description has been given taking as an example a vehicle in which an engine is disposed on the front (Fr) side, but the present invention may be applied to a different structure in which an engine is mounted, such as a vehicle in which an engine is disposed on the rear side.

In the above-described embodiment, the high-pressure fuel pump is taken as an example of the fuel system component, but the fuel system component is not limited thereto. According to the bracket of the present invention, piping such as a delivery pipe for delivering fuel, an injector, a purge solenoid valve (PCS), a canister, and the like can be protected as fuel system components.