JP7476444B2 - Support structure for long objects - Google Patents

Description

The present invention relates to a support structure for long objects, which clamps and supports long objects such as fuel injection pipes and other piping installed in engines such as diesel engines.

Diesel engines with common rail fuel injection devices and indirect injection (IDI) diesel engines are equipped with fuel injection pipes as thin pipes. Therefore, in such engines, a clamp support for the fuel injection pipe is used to suppress vibration of the fuel injection pipe. The clamp support has one metal plate and another metal plate. Rubber material is attached to the inside of each of the one metal plate and the other metal plate. The rubber material attached to the one metal plate and the rubber material attached to the other metal plate sandwich the fuel injection pipe. The one metal plate and the other metal plate are fastened to each other, for example, by a fastening screw. In this way, the fuel injection pipe is supported by the clamp support and vibration is suppressed. Patent Document 1 also discloses a clamp body that clamps a fuel injection pipe for a diesel engine that requires resonance prevention.

In conventional fuel injection pipe clamp supports, it is necessary to prevent both the first metal plate and the other metal plate from falling off during the fastening work. For this reason, the worker must hold both the first metal plate and the other metal plate in his/her hands while sandwiching the fuel injection pipe, pass the fastening screw through the through hole in the first metal plate, and then completely screw it into the female thread of the other metal plate. During this work, the worker must maintain the fuel injection pipe sandwiched between the rubber material while holding both the first metal plate and the other metal plate in his/her hands until the fastening screw is completely screwed into the female thread of the other metal plate. For this reason, there is a problem in that it is difficult to perform support work to suppress the vibration of the fuel injection pipe in narrow spaces around the engine or spaces that are difficult to reach.

JP 2002-130077 A

The present invention has been made to solve the above problems, and aims to provide a support structure for long objects that can easily support long objects such as fuel injection pipes and other piping while preventing components from falling when clamping and supporting the object.

The above problem is solved by the support structure for long objects according to the present invention, which is provided in an engine and supports the long object, and is characterized in that it comprises a first clamp member having a first elastic member that supports the outer surface of the long object, a second clamp member facing the first clamp member and having a second elastic member that supports the outer surface of the long object, a fastening screw that fastens the first clamp member and the second clamp member while the long object is sandwiched between the first elastic member and the second elastic member, and a separation suppression part that suppresses the first clamp member and the second clamp member from separating from each other when the first elastic member and the second elastic member sandwich and support the long object.

According to the support structure for a long object of the present invention, the first elastic member of the first clamp member and the second elastic member of the second clamp member sandwich and support the long object between them. Then, the fastening screw fastens the first clamp member and the second clamp member with the long object sandwiched between the first elastic member and the second elastic member. Here, when the first elastic member and the second elastic member sandwich and support the long object, the separation suppression portion suppresses the first clamp member and the second clamp member from separating from each other. Therefore, the separation suppression portion can suppress at least one of the first clamp member and the second clamp member from falling when an operator sandwiches and supports a long object between the first elastic member and the second elastic member in a narrow space around the engine or a space that is difficult to reach. In addition, since the drop of at least one of the first clamp member and the second clamp member is suppressed, an operator can easily perform the support work of a long object in a narrow space around the engine or a space that is difficult to reach. As a result, the support structure for a long object of the present invention can easily perform the support work of a long object while suppressing the drop of the members when the long object is sandwiched and supported.

In the support structure for elongated objects according to the present invention, preferably, the separation prevention portion is a connecting portion that is integrally formed with one end of the first elastic member and one end of the second elastic member, and connects one end of the first elastic member and one end of the second elastic member.

According to the support structure for a long object of the present invention, the separation suppression portion is a connecting portion that is integrally formed with one end of the first elastic member and one end of the second elastic member and connects one end of the first elastic member and one end of the second elastic member. Therefore, the connecting portion as the separation suppression portion can further suppress the first clamp member and the second clamp member from separating from each other when the first elastic member and the second elastic member sandwich and support the long object. Therefore, the connecting portion as the separation suppression portion can further suppress at least one of the first clamp member and the second clamp member from falling when an operator sandwiches and supports the long object between the first elastic member and the second elastic member in a narrow space around the engine or a space that is difficult to reach. In addition, since the connecting portion as the separation suppression portion connects the first elastic member provided on the first clamp member and the second elastic member provided on the second clamp member, the first clamp member and the second clamp member can be integrated into one integrated part. As a result, the support structure for long objects according to the present invention can reduce the number of parts while preventing components from falling when clamping and supporting a long object.

In the support structure for elongated objects according to the present invention, the separation prevention portion is preferably a temporary locking engagement portion that is provided in the screw through hole of the second elastic member, has an inner diameter dimension smaller than the outer diameter dimension of the male thread portion of the fastening screw, and temporarily locks the fastening screw.

According to the support structure for a long object of the present invention, the separation prevention portion is a temporary fastening engaging portion provided in the screw through hole of the second elastic member. The temporary fastening engaging portion as the separation prevention portion has an inner diameter dimension smaller than the outer diameter dimension of the male thread portion of the fastening screw, and temporarily fastens the fastening screw. Therefore, the temporary fastening engaging portion as the separation prevention portion can temporarily fasten the fastening screw that fastens the first clamp member and the second clamp member, thereby preventing the first clamp member and the second clamp member from separating from each other when the first elastic member and the second elastic member sandwich and support the long object. Therefore, the temporary fastening engaging portion as the separation prevention portion can prevent at least one of the first clamp member and the second clamp member from falling when the worker sandwiches and supports the long object between the first elastic member and the second elastic member in a narrow space around the engine or a space that is difficult to reach. As a result, the support structure for a long object according to the present invention can easily perform the support work of the long object while preventing the members from falling using a simple structure when the long object is sandwiched and supported.

In the support structure for elongated objects according to the present invention, preferably, the separation prevention portion has a first temporary locking engagement portion that is provided in the screw through hole of the first elastic member, has an inner diameter dimension smaller than the outer diameter dimension of the male thread of the fastening screw, and temporarily locks the fastening screw, and a second temporary locking engagement portion that is provided in the screw through hole of the second elastic member, has an inner diameter dimension smaller than the outer diameter dimension of the male thread of the fastening screw, and temporarily locks the fastening screw.

According to the support structure for a long object of the present invention, the separation suppression portion has a first temporary fastening engaging portion provided in the screw through hole of the first elastic member and a second temporary fastening engaging portion provided in the screw through hole of the second elastic member. Each of the first temporary fastening engaging portion and the second temporary fastening engaging portion has an inner diameter dimension smaller than the outer diameter dimension of the male thread of the fastening screw, and temporarily fastens the fastening screw. Therefore, the separation suppression portion can further suppress the first clamp member and the second clamp member from separating from each other when the first elastic member and the second elastic member sandwich and support a long object by temporarily fastening the fastening screw that fastens the first clamp member and the second clamp member using both the first temporary fastening engaging portion and the second temporary fastening engaging portion. Therefore, the separation suppression portion can further suppress at least one of the first clamp member and the second clamp member from falling when an operator sandwiches and supports a long object between the first elastic member and the second elastic member in a narrow space around the engine or a space that is difficult to reach. As a result, the support structure for long objects according to the present invention can easily support long objects while further preventing components from falling when clamping and supporting the long object.

In the support structure for an elongated object according to the present invention, preferably, the first elastic member has a plurality of first curved portions into which a portion of the elongated object fits, the second elastic member has a plurality of second curved portions that are provided opposite the plurality of first curved portions into which a portion of the elongated object fits, and at least one of the first elastic member and the second elastic member has a dummy member that fills any of the first curved portions and any of the second curved portions that face each other among the plurality of first curved portions and the plurality of second curved portions.

According to the support structure for a long object of the present invention, at least one of the first elastic member and the second elastic member has a dummy member. The dummy member fills any of the first curved portions and the second curved portions that face each other among the first curved portions provided on the first elastic member and into which a part of the long object fits, and the second curved portions provided on the second elastic member and into which a part of the long object fits. Therefore, even if the long object is not supported by all of the first curved portions and the second curved portions, the dummy member can fill the first curved portions and the second curved portions that face each other. As a result, even if the long object is not supported by all of the first curved portions and the second curved portions, the support structure for a long object of the present invention can support the long object in a well-balanced and stable manner.

In the support structure for a long object according to the present invention, the long object is preferably a fuel injection pipe for a diesel engine.

According to the support structure for long objects of the present invention, the separation prevention portion can prevent at least one of the first clamp member and the second clamp member from falling when an operator supports the fuel injection pipe by clamping it between the first elastic member and the second elastic member in a narrow space or a hard-to-reach space around the diesel engine. In addition, because at least one of the first clamp member and the second clamp member is prevented from falling, an operator can easily support the fuel injection pipe in a narrow space or a hard-to-reach space around the diesel engine. As a result, the support structure for long objects of the present invention can easily support the fuel injection pipe of the diesel engine while preventing the members from falling when clamping and supporting the fuel injection pipe of the diesel engine.

The present invention provides a support structure for long objects that can easily support long objects such as fuel injection pipes and other piping while preventing components from falling when clamping and supporting the objects.

1 is a perspective view showing an engine equipped with a support structure for an elongated object according to a first embodiment of the present invention; 1 is a cross-sectional view showing an example of a structure of a support structure for an elongated object according to an embodiment of the present FIG. 11 is a cross-sectional view showing a support structure for a long object according to a comparative example. 13 is a cross-sectional view showing a structural example of a support structure for an elongated object according to a modified example. FIG. FIG. 4 is a cross-sectional view showing a support structure for an elongated object according to a second embodiment of the present invention. FIG. 11 is a cross-sectional view showing a support structure for an elongated object according to a third embodiment of the present invention. FIG. 11 is a cross-sectional view showing a support structure for an elongated object according to a fourth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
The embodiments described below are preferred specific examples of the present invention, and therefore various technically preferable limitations are applied to them, but the scope of the present invention is not limited to these aspects unless otherwise specified in the following description to the effect that the present invention is limited to them. In addition, in each drawing, similar components are given the same reference numerals, and detailed descriptions thereof are omitted as appropriate.

First Embodiment
(Engine 1)
FIG. 1 is a perspective view showing an engine equipped with a support structure for an elongated object according to a first embodiment of the present invention.
The engine 1 shown in Fig. 1 is an internal combustion engine, for example an industrial diesel engine. The engine 1 is a vertical in-line multi-cylinder engine, for example a turbocharged high-output four-cylinder engine. The engine 1 is a diesel engine with a common rail fuel injection device or an indirect injection (IDI) diesel engine. The engine 1 is mounted on vehicles, for example, construction machines, agricultural machines, lawn mowers, and the like.

The engine 1 includes a cylinder head 2 and a head cover 2H. A plurality of fuel injection pipes 3, 4, 5 are arranged near the cylinder head 2 as piping. The fuel injection pipes 3, 4, 5 are examples of long objects, for example, metal pipes with a circular cross section. In the engine 1 shown in FIG. 1, the fuel injection pipes 3, 4, 5 are connected to a common rail fuel injection device 9. The fuel injection pipes 3, 4, 5 are connected to each other and supported by two long support structures 10. This suppresses the vibration of the fuel injection pipes 3, 4, 5. Specifically, a set of the fuel injection pipes 3, 4 is connected to each other and supported by one long support structure 10. In addition, a set of the fuel injection pipes 4, 5 is connected to each other and supported by another long support structure 10. In this way, the thin fuel injection pipes 3, 4, 5 are suppressed from resonating with the vibrations generated by the engine 1 or the vibrations generated during running of equipment, etc. In other words, the fuel injection pipes 3, 4, 5 are protected from unnecessary vibrations.

(Support structure 10 for long objects)
Next, the support structure 10 for an elongated object shown in FIG. 1 will be described with reference to FIG. 1 and FIG.
FIG. 2 is a cross-sectional view showing an example of the structure of a support structure for an elongated object according to this embodiment.
FIG. 3 is a cross-sectional view showing a support structure for an elongated object according to a comparative example.
FIG. 2 is a cross-sectional view of the support structure 10 for an elongated object taken along the cutting plane BB shown in FIG.
FIG. 3 corresponds to a cross-sectional view taken along the line BB shown in FIG.

1 and 2 , the support structure 10 for an elongated object includes a first clamp member 11, a second clamp member 12, a fastening screw 30, and a separation suppression portion 40. The first clamp member 11 has a first elastic member 21. The second clamp member 12 has a second elastic member 22.
The first clamp member 11, the second clamp member 12, and the fastening screw 30 are metal members, and are made of, for example, iron or stainless steel. However, the materials of the first clamp member 11, the second clamp member 12, and the fastening screw 30 are not particularly limited. As shown in Fig. 2, the fastening screw 30 is a fastening member for fastening the first clamp member 11 and the second clamp member 12 to each other using a tool at the assembly site of the engine 1, and has a male thread portion 31 and a head 32.

The first clamp member 11 is formed by bending a metal plate, and has a flat portion 11A, two bent portions 11B, and a screw through hole 11C. The flat portion 11A has a rectangular shape. A circular screw through hole 11C is provided at the center of the flat portion 11A. The inner diameter of the screw through hole 11C is larger than the outer diameter of the male thread portion 31 of the fastening screw 30.

As shown in FIG. 2, the two bent portions 11B are formed by bending one end and the other end of the flat portion 11A at approximately 90 degrees. The first elastic member 21 is attached in close contact with the inner surface 11D of the flat portion 11A and the inner surface 11E of the two bent portions 11B, and is fixed, for example, by an adhesive. The first elastic member 21 is made of, for example, a heat-resistant elastically deformable plastic or rubber, and supports the outer surface of the fuel injection pipes 3, 4, and 5. The first elastic member 21 has two arc-shaped curved portions 21B and a screw through hole 21H. The curved portion 21B of this embodiment is an example of the "first curved portion" of the present invention. A part of the fuel injection pipes 3, 4, and 5 fits into the curved portion 21B, so that the first elastic member 21 can support the outer surface of the fuel injection pipes 3, 4, and 5. The screw through hole 21H, which has a circular cross section, is provided at a position between the two arc-shaped curved portions 21B. The inner diameter of the screw through hole 21H of the first elastic member 21 is larger than the outer diameter of the male threaded portion 31 of the fastening screw 30. Specifically, the inner diameter of the screw through hole 21H is the same as the inner diameter of the screw through hole 11C.

On the other hand, as shown in FIG. 2, the second clamp member 12 is formed by bending a plate-shaped metal plate, and has a flat portion 12A, two bent portions 12B, and a female thread portion 12N. The second clamp member 12 is a member disposed opposite the first clamp member 11. The two bent portions 12B are formed by bending one end and the other end of the flat portion 12A at approximately 90 degrees.

The second elastic member 22 is attached in close contact with the inner surface 12D of the flat portion 12A and the inner surface 12E of the two bent portions 12B, and is fixed, for example, by an adhesive. The second elastic member 22 is made of, for example, a heat-resistant elastically deformable plastic or rubber, and supports the outer surface of the fuel injection pipes 3, 4, and 5. The second elastic member 22 has two arc-shaped curved portions 22B and a screw through hole 22H. The curved portion 22B of this embodiment is an example of the "second curved portion" of the present invention. A part of the fuel injection pipes 3, 4, and 5 fits into the curved portion 22B, so that the second elastic member 22 can support the outer surface of the fuel injection pipes 3, 4, and 5. The screw through hole 22H, which has a circular cross section, is provided at a position between the two arc-shaped curved portions 22B. The two arc-shaped curved portions 21B and the two arc-shaped curved portions 22B face each other. The inner diameter of the screw through hole 22H of the second elastic member 22 is larger than the outer diameter of the male threaded portion 31 of the fastening screw 30. Specifically, the inner diameter of the screw through hole 22H is the same as the inner diameter of the screw through hole 11C.

A cylindrical protruding portion 12R is formed at the center of the flat portion 12A. The female thread portion 12N is formed within the protruding portion 12R. When the male thread portion 31 of the fastening screw 30 is to be tightened and connected to the first clamp member 11 and the second clamp member 12, it is screwed into the female thread portion 12N to engage with it. In other words, the fastening screw 30 fastens the first clamp member 11 and the second clamp member 12 with the set of fuel injection pipes 3, 4 or the set of fuel injection pipes 4, 5 sandwiched between the first elastic member 21 and the second elastic member 22. In the example of FIG. 2, the curved portions 21B and 22B facing each other sandwich the set of fuel injection pipes 3, 4 or the set of fuel injection pipes 4, 5 shown in FIG. 1, and are in close contact with the outer circumferential surfaces of the fuel injection pipes 3, 4 or the fuel injection pipes 4, 5.

Next, with reference to Figures 1 and 2, we will explain an example of the work involved in installing a support structure 10 for a long object in order to suppress vibration of the fuel injection pipes 3, 4, and 5.

First, a support structure for an elongated object according to a comparative example will be described with reference to FIG.
The support structure 300 for the long object according to the comparative example shown in FIG. 3 does not have a separation suppression portion. The first elastic member 321 of the first clamp member 311 is completely separate from the second elastic member 322 of the second clamp member 312. For this reason, when an operator uses the support structure 300 for the long object to support a set of two fuel injection pipes 3, 4 or a set of two fuel injection pipes 4, 5, and attempts to fasten the first clamp member 311 and the second clamp member 312 to each other with the fastening screw 330 in a narrow space of the engine, there is a risk that at least one of the first clamp member 311 and the second clamp member 312 may accidentally fall off or drop. One of the reasons for this is that it is difficult for an operator to simultaneously support the first clamp member 311 and the second clamp member 312 with one hand. If at least one of the first clamp member 311 and the second clamp member 312 falls off or drops during the fastening operation using the fastening screw 330, the assembly workability at the assembly site of the engine 1 is reduced.

In contrast, in this embodiment, the worker holds the support structure 10 for the long object with, for example, the left hand and opens the first clamp member 11 and the second clamp member 12 around the separation suppression part 40. Next, the worker places the set of fuel injection pipes 3, 4 or the set of fuel injection pipes 4, 5 between the curved part 21B of the first elastic member 21 and the curved part 22B of the second elastic member 22 so as to sandwich them, and the first elastic member 21 and the second elastic member 22 are brought into close contact with the outer circumferential surfaces of the fuel injection pipes 3, 4, 5. At this time, since the first elastic member 21 of the first clamp member 11 is connected to the second elastic member 22 of the second clamp member 12 by the separation suppression part 40, even if the worker holds the support structure 10 for the long object with one hand, it is possible to prevent the first clamp member 11 and the second clamp member 12 from separating from each other. This makes it possible to prevent the first clamp member 11 and the second clamp member 12 from falling when the worker performs the work of sandwiching and supporting the fuel injection pipes 3, 4, 5.

Next, the worker passes the male threaded portion 31 of the fastening screw 30 through the screw through holes 11C, 21H, 22H, for example, with his right hand, and then uses a tool to screw the male threaded portion 31 of the fastening screw 30 into the female threaded portion 12N to engage them. As a result, the first clamp member 11 and the second clamp member 12 use the first elastic member 21 and the second elastic member 22 to clamp the set of fuel injection pipes 3, 4 or the set of fuel injection pipes 4, 5, and are fastened to each other by being in close contact with the outer circumferential surfaces of the fuel injection pipes 3, 4, 5.

As described above, when the worker supports two fuel injection pipes 3, 4 or two fuel injection pipes 4, 5 using the support structure 10 for long objects, the worker can easily connect (i.e., support) the fuel injection pipes 3, 4, 5 in the narrow space around the engine 1 without causing the first clamp member 11 and the second clamp member 12 to fall off each other. In other words, when the worker supports long objects such as the fuel injection pipes 3, 4, 5 using the support structure 10 for long objects, the worker can easily support the long objects such as the fuel injection pipes 3, 4, 5 while preventing the first clamp member 11 and the second clamp member 12 from falling off. This improves the ease of assembly at the engine 1 assembly site.

According to the support structure 10 for a long object according to the present embodiment, the first elastic member 21 of the first clamp member 11 and the second elastic member 22 of the second clamp member 12 support the fuel injection pipes 3, 4, 5 by sandwiching them between each other. Then, the fastening screw 30 fastens the first clamp member 11 and the second clamp member 12 with the fuel injection pipes 3, 4, 5 sandwiched between the first elastic member 21 and the second elastic member 22. Here, when the first elastic member 21 and the second elastic member 22 support the fuel injection pipes 3, 4, 5 by sandwiching them, the separation suppression part 40 suppresses the first clamp member 11 and the second clamp member 12 from separating from each other. Therefore, the separation suppression part 40 can suppress at least one of the first clamp member 11 and the second clamp member 12 from falling when the worker supports the fuel injection pipes 3, 4, 5 by sandwiching them between the first elastic member 21 and the second elastic member 22 in a narrow space around the engine 1 or a space that is difficult to reach. In addition, because the first clamp member 11 and/or the second clamp member 12 are prevented from falling, the worker can easily support the fuel injection pipes 3, 4, 5 in narrow spaces or hard-to-reach spaces around the engine 1. As a result, the support structure 10 for long objects according to this embodiment can easily support the fuel injection pipes 3, 4, 5 while preventing members from falling when clamping and supporting the fuel injection pipes 3, 4, 5.

The separation prevention part 40 is a connecting part that is integrally formed with one end 21T of the first elastic member 21 and one end 22T of the second elastic member 22 and connects one end 21T of the first elastic member 21 and one end 22T of the second elastic member 22. Therefore, the connecting part as the separation prevention part 40 can further prevent the first clamp member 11 and the second clamp member 12 from separating from each other when the first elastic member 21 and the second elastic member 22 sandwich and support the fuel injection pipes 3, 4, 5. Therefore, the connecting part as the separation prevention part 40 can further prevent at least one of the first clamp member 11 and the second clamp member 12 from falling when the worker sandwiches and supports the fuel injection pipes 3, 4, 5 between the first elastic member 21 and the second elastic member 22 in a narrow space around the engine 1 or a space that is difficult to reach. In addition, the connecting portion as the separation suppression portion 40 connects the first elastic member 21 provided on the first clamp member 11 and the second elastic member 22 provided on the second clamp member 12, so that the first clamp member 11 and the second clamp member 12 can be integrated into one part. As a result, the support structure 10 for an elongated object according to this embodiment can reduce the number of parts while preventing the parts from falling when clamping and supporting the fuel injection pipes 3, 4, and 5.

(Modification)
FIG. 4 is a cross-sectional view showing an example of a structure of a support structure for an elongated object according to a modified example.
1 and 2, the first clamp member 11 and the second clamp member 12 connect the set of fuel injection pipes 3, 4 or the set of fuel injection pipes 4, 5 to each other using the first elastic member 21 and the second elastic member 22. That is, the support structure 10 for the long object connects the fuel injection pipes 3, 4, 5 to each other at a position around the engine 1 and away from the engine 1.

In contrast, in the support structure 10A for an elongated object according to the modified example shown in FIG. 4, a fastening screw 30 with an extended length of the male threaded portion 31 is used. A circular screw through hole 12C is provided at the center of the flat portion 12A of the second clamp member 12. The inner diameter of the screw through hole 12C is larger than the outer diameter of the male threaded portion 31 of the fastening screw 30. Specifically, the inner diameter of the screw through hole 12C is the same as the inner diameter of the screw through hole 11C.

As shown in FIG. 4, the male threaded portion 31 of the fastening screw 30 passes through the screw through holes 11C, 21H, 22H, and 12C and is screwed into, for example, the female threaded portion 2R of the cylinder head 2 of the engine 1. As a result, the set of fuel injection pipes 3 and 4 or the set of fuel injection pipes 4 and 5 is directly fixed, for example, to the cylinder head 2 using the long support structure 10A.

According to this modified example, the set of fuel injection pipes 3, 4 or the set of fuel injection pipes 4, 5 are fixed directly to, for example, the cylinder head 2 using a long support structure 10A, so that the worker can easily support the fuel injection pipes 3, 4, 5 in narrow or hard-to-reach spaces around the engine 1, and vibration of the fuel injection pipes 3, 4, 5 can be further suppressed.

Next, the support structures for elongated objects according to the second to fourth embodiments of the present invention will be described in order. In cases where the elements of the support structures for elongated objects according to the second to fourth embodiments of the present invention are substantially the same as the elements of the support structure for elongated objects 10 according to the first embodiment shown in FIG. 2, the same reference numerals will be used and the description thereof will be omitted.

Second Embodiment
FIG. 5 is a cross-sectional view showing a support structure for an elongated object according to a second embodiment of the present invention.
FIG. 5 corresponds to a cross-sectional view taken along the line BB shown in FIG.
In the support structure 10 for a long object according to the first embodiment of the present invention shown in Figure 2, the separation prevention portion 40 is a connecting portion that is integrally formed with one end 21T of the first elastic member 21 and one end 22T of the second elastic member 22, and connects one end 21T of the first elastic member 21 and one end 22T of the second elastic member 22.
In contrast, in a support structure 10X for an elongated object according to a second embodiment of the present invention shown in Fig. 5, one end 21T of the first elastic member 21 and one end 22T of the second elastic member 22 are separate from each other. A separation suppression portion 40X is provided on the second elastic member 22.

Specifically, the separation suppression portion 40X is a temporary locking engagement portion formed at a position between the two curved portions 22B of the second elastic member 22, and can engage the male threaded portion 31 of the fastening screw 30 for temporary locking. Specifically, in the separation suppression portion 40X, the inner diameter dimension of the inner peripheral surface of the screw through hole 22H is smaller than the outer diameter dimension of the male threaded portion 31 of the fastening screw 30. As a result, when the male threaded portion 31 of the fastening screw 30 passes through the screw through hole 11C and the screw through hole 21H and reaches the screw through hole 22H, it fits into the inner peripheral surface of the screw through hole 22H.

The male thread portion 31 of the fastening screw 30 is therefore engaged and temporarily fixed with the second elastic member 22 of the second clamping member 12 using the separation prevention portion 40X, thereby preventing the first clamping member 11 and the second clamping member 12 from separating from each other. In this temporarily fixed state, the worker can further rotate the fastening screw 30 using a tool, thereby allowing the male thread portion 31 of the fastening screw 30 to engage with the female thread portion 12N.

Therefore, when a worker supports a set of two fuel injection pipes 3, 4 or a set of two fuel injection pipes 4, 5 using the support structure 10X for long objects, the worker can easily connect (i.e., support) the fuel injection pipes 3, 4, 5 in a narrow space around the engine 1 without causing the first clamp member 11 and the second clamp member 12 to fall off each other. In other words, when a worker supports piping such as the fuel injection pipes 3, 4, 5 using the support structure 10X for long objects, the worker can easily support the long objects such as the fuel injection pipes 3, 4, 5 while preventing the first clamp member 11 and the second clamp member 12 from falling off. This improves the ease of assembly at the engine 1 assembly site.

According to the support structure 10X for an elongated object according to this embodiment, the separation suppression portion 40X is a temporary fastening engaging portion provided in the screw through hole 22H of the second elastic member 22. The temporary fastening engaging portion as the separation suppression portion 40X has an inner diameter dimension smaller than the outer diameter dimension of the male thread portion 31 of the fastening screw 30, and temporarily fastens the fastening screw 30. Therefore, the temporary fastening engaging portion as the separation suppression portion 40X temporarily fastens the fastening screw 30 that fastens the first clamp member 11 and the second clamp member 12, thereby preventing the first clamp member 11 and the second clamp member 12 from separating from each other when the first elastic member 21 and the second elastic member 22 sandwich and support the fuel injection pipes 3, 4, and 5. Therefore, the temporary fastening engagement portion as the separation prevention portion 40X can prevent at least one of the first clamp member 11 and the second clamp member 12 from falling when the worker clamps and supports the fuel injection pipes 3, 4, 5 between the first elastic member 21 and the second elastic member 22 in a narrow space or a hard-to-reach space around the engine 1. As a result, the support structure 10X for elongated objects according to this embodiment can easily perform the support work of the fuel injection pipes 3, 4, 5 while preventing the members from falling, using a simple structure, when clamping and supporting the fuel injection pipes 3, 4, 5.

Third Embodiment
FIG. 6 is a cross-sectional view showing a support structure for an elongated object according to a third embodiment of the present invention.
FIG. 6 corresponds to a cross-sectional view taken along the line BB shown in FIG.
In a support structure 10X for an elongated object according to a second embodiment of the present invention shown in FIG. 5, a separation suppression portion 40X is formed only at a position between two curved portions 22B of the second elastic member 22.

In contrast, in the support structure 10Y for an elongated object according to the third embodiment of the present invention shown in FIG. 6, not only is the separation suppression portion 40X formed at a position between the two curved portions 22B of the second elastic member 22, but another separation suppression portion 40Y is formed at a position between the two curved portions 21B of the first elastic member 21. Specifically, in the separation suppression portion 40Y, the inner diameter dimension of the inner peripheral surface of the screw through hole 21H is smaller than the outer diameter dimension of the male thread portion 31 of the fastening screw 30. That is, the separation suppression portions 40X and 40Y of this embodiment have a first temporary fastening engagement portion that is provided in the screw through hole 21H of the first elastic member 21 and has an inner diameter dimension smaller than the outer diameter dimension of the male thread portion 31 of the fastening screw 30 and temporarily fastens the fastening screw 30, and a second temporary fastening engagement portion that is provided in the screw through hole 22H of the second elastic member 22 and has an inner diameter dimension smaller than the outer diameter dimension of the male thread portion 31 of the fastening screw 30 and temporarily fastens the fastening screw 30. Therefore, the separation prevention parts 40Y and 40X can engage the male threaded part 31 of the fastening screw 30 for temporary fastening. The male threaded part 31 of the fastening screw 30 passes through the screw through hole 11C and fits into the screw through hole 21H when it reaches the screw through hole 21H, and then fits into the screw through hole 22H when it reaches the screw through hole 22H.

The second elastic member 22 of the second clamp member 12 and the first elastic member 21 of the first clamp member 11 are engaged with the male thread portion 31 of the fastening screw 30 using both of the separation suppression portions 40Y and 40X, so that the first clamp member 11 and the second clamp member 12 can be further prevented from being separated from each other. Therefore, when performing the work of supporting a set of two fuel injection pipes 3, 4 or a set of two fuel injection pipes 4, 5 using the support structure 10Y for long objects, the worker can easily perform the connection work (i.e., the support work) of the fuel injection pipes 3, 4, 5 in a narrow space around the engine 1 without causing the first clamp member 11 and the second clamp member 12 to fall off each other. In other words, when performing the work of supporting piping such as the fuel injection pipes 3, 4, 5 using the support structure 10Y for long objects, the work of supporting long objects such as the fuel injection pipes 3, 4, 5 can be easily performed while preventing the first clamp member 11 and the second clamp member 12 from falling off. This improves the assembly workability at the assembly site of the engine 1.

According to the support structure 10Y for a long object according to this embodiment, the separation prevention parts 40Y, 40X can further prevent the first clamp member 11 and the second clamp member 12 from separating from each other when the first elastic member 21 and the second elastic member 22 sandwich and support the fuel injection pipes 3, 4, 5 by temporarily fixing the fastening screw 30 that fastens the first clamp member 11 and the second clamp member 12 using both the first temporary fixing engaging part and the second temporary fixing engaging part. Therefore, the separation prevention parts 40Y, 40X can further prevent at least one of the first clamp member 11 and the second clamp member 12 from falling when the worker supports the fuel injection pipes 3, 4, 5 by sandwiching them between the first elastic member 21 and the second elastic member 22 in a narrow space around the engine 1 or a space that is difficult to reach. As a result, the support structure 10Y for a long object according to this embodiment can easily perform the support work for a long object while further preventing the members from falling when the fuel injection pipes 3, 4, 5 are sandwiched and supported.

Fourth Embodiment
FIG. 7 is a cross-sectional view showing a support structure for an elongated object according to a fourth embodiment of the present invention.
FIG. 7 corresponds to a cross-sectional view taken along the line BB in FIG.
The support structure 10Z for the long object shown in FIG. 7 has the same structure as the support structure 10X for the long object according to the second embodiment of the present invention shown in FIG. 5, but supports only one of the two fuel injection pipes 3, 4. In the example shown in FIG. 7, the support structure 10Z for the long object supports only one of the two fuel injection pipes 3, 4. In such a case, for example, the fuel injection pipe 3 is supported by being sandwiched between the curved portions 21B, 22B facing one side, but a dummy member 60 is arranged in place of the fuel injection pipe at the curved portions 21B, 22B facing the other side. The dummy member 60 is, for example, a member formed continuously from the second elastic member 22, and has a circular cross-sectional shape. The dummy member 60 may be a member formed continuously from the first elastic member 21. That is, at least one of the first elastic member 21 and the second elastic member 22 has a dummy member 60 that fills in any of the curved portions 21B and curved portions 22B that face each other among the multiple curved portions 21B and the multiple curved portions 22B.

The fuel injection pipe 3 is sandwiched between the curved portions 21B and 22B facing each other on one side, and the dummy member 60 is sandwiched between the curved portions 21B and 22B facing each other on the other side. Therefore, even if the object to be supported is one fuel injection pipe, the support structure 10Z for the long object shown in FIG. 7 can support one fuel injection pipe stably and with good left-right balance. In other words, since the support structure 10Z for the long object can support one fuel injection pipe by sandwiching it between the dummy member 60, it can support one fuel injection pipe 3 stably and with good balance even when supporting only one fuel injection pipe 3. The dummy member 60 may be a cylindrical member separate from the second elastic member 22. The dummy member 60 shown in FIG. 7 may also be applied to the support structure 10 for the long object according to the first embodiment shown in FIG. 2, the support structure 10X for the long object according to the second embodiment shown in FIG. 5, and the support structure 10Y for the long object according to the third embodiment shown in FIG. 6.

According to the support structure 10Z for the long object according to this embodiment, the dummy member 60 fills any of the curved portions 21B and 22B that face each other among the curved portions 21B provided on the first elastic member 21 and into which parts of the fuel injection pipes 3, 4, and 5 fit, and the curved portions 22B provided on the second elastic member 22 and into which parts of the fuel injection pipes 3, 4, and 5 fit. Therefore, even if the fuel injection pipes 3, 4, and 5 are not supported by all of the curved portions 21B and 22B, the dummy member 60 can fill the curved portions 21B and 22B that face each other. As a result, even if the fuel injection pipes 3, 4, and 5 are not supported by all of the curved portions 21B and 22B, the support structure 10Z for the long object according to this embodiment can support the fuel injection pipes 3, 4, and 5 in a well-balanced and stable manner.

The above describes the embodiments of the present invention. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the claims. The configurations of the above embodiments can be partially omitted or arbitrarily combined in a manner different from the above.
For example, the engine 1 according to the present embodiment is illustrated as an example of the engine of the present invention. The engine 1 is a supercharged diesel engine with a turbocharger. However, the engine of the present invention is not limited to this, and may be a naturally aspirated diesel engine, a supercharged gasoline engine with a turbocharger, a naturally aspirated gasoline engine, or the like. The type of the engine 1 is a multi-cylinder engine, such as a high-output supercharged four-cylinder engine with a turbocharger. However, the type of the engine 1 is not limited to this, and may be an engine with three or five or more cylinders. The engine 1 can be mounted on a type of vehicle other than vehicles such as construction machines, agricultural machines, and lawnmowers.

In each illustrated embodiment of the present invention, a structural example is shown in which two fuel injection pipes are sandwiched and supported as piping. However, the support structure for a long object according to this embodiment is not limited to this, and may have a structure for supporting a long object such as three or more fuel injection pipes. In the present invention, the long object is not limited to piping, and may be, for example, an electric wire for power supply or an electric wire for signal supply used in the engine 1. The electric wire may be a single wire or a bundle of multiple electric wires. Alternatively, the long object may be a pipe for conveying oil or cooling water, etc.

Furthermore, as an example of the configuration of the separation suppression part 40X shown in FIG. 5, the inner diameter dimension of the inner peripheral surface of the screw through hole 22H is smaller than the outer diameter dimension of the male threaded part 31 of the fastening screw 30. When the male threaded part 31 of the fastening screw 30 reaches the screw through hole 22H, the male threaded part 31 fits into and engages with the screw through hole 22H. The inner peripheral surface of the screw through hole 22H is a smooth cylindrical surface without steps. This is the same for the separation suppression part 40Y shown in FIG. 6. However, this is not limited to this, and as an example of the configuration of the separation suppression part 40X, 40Y, the inside of the screw through hole 22H, 21H may be provided with a spiral or ring-shaped uneven part. Even in this case, when the male threaded part 31 of the fastening screw 30 reaches the screw through hole 22H, 21H, it fits into and engages with the screw through hole 22H, 21H.

1: engine, 2: cylinder head, 2H: head cover, 2R: female thread portion, 3, 4, 5: fuel injection pipe, 9: common rail fuel injection device, 10, 10A, 10X, 10Y, 10Z: support structure for elongated object, 11: first clamp member, 11A: flat portion, 11B: folded portion, 11C: screw through hole, 11D, 11E: inner surface, 12: second clamp member, 12A: flat portion, 12B: folded portion, 12C: screw through hole, 12D, 12E: inner surface, 12N: female thread portion, 12R: protruding portion, 21: first elastic member, 21B: curved portion, 21H: screw through hole, 21T: one end portion, 22: second elastic member, 22B: curved portion, 22H: screw through hole, 22T: one end portion, 30: Fastening screw, 31: Male thread portion, 32: Head, 40, 40X, 40Y: Separation suppression portion, 60: Dummy member, 300: Support structure, 311: First clamp member, 312: Second clamp member, 321: First elastic member, 322: Second elastic member, 330: Fastening screw

Claims (6)

A support structure for a long object provided in an engine, comprising:
a first clamping member having a first elastic member for supporting an outer surface of the elongated object;
a second clamping member facing the first clamping member and having a second elastic member supporting the outer surface of the elongated object;
a fastening screw that fastens the first clamping member and the second clamping member together in a state in which the elongated object is sandwiched between the first elastic member and the second elastic member;
a separation suppression portion that suppresses separation of the first clamping member and the second clamping member from each other when the first elastic member and the second elastic member sandwich and support the elongated object;
Equipped with
A support structure for elongated objects, characterized in that the separation prevention portion is a connecting portion integrally formed with one end of the first elastic member and one end of the second elastic member, connecting one end of the first elastic member and one end of the second elastic member . A support structure for a long object provided in an engine, comprising:
a first clamping member having a first elastic member for supporting an outer surface of the elongated object;
a second clamping member facing the first clamping member and having a second elastic member supporting the outer surface of the elongated object;
a fastening screw that fastens the first clamping member and the second clamping member together in a state in which the elongated object is sandwiched between the first elastic member and the second elastic member;
a separation suppression portion that suppresses separation of the first clamping member and the second clamping member from each other when the first elastic member and the second elastic member sandwich and support the elongated object;
Equipped with
A support structure for elongated objects, characterized in that the separation prevention portion is a temporary fastening engagement portion provided in a screw through hole of the second elastic member, has an inner diameter dimension smaller than the outer diameter dimension of the male thread portion of the fastening screw, and is used to temporarily fasten the fastening screw . A support structure for a long object provided in an engine, comprising:
a first clamping member having a first elastic member for supporting an outer surface of the elongated object;
a second clamping member facing the first clamping member and having a second elastic member supporting the outer surface of the elongated object;
a fastening screw that fastens the first clamping member and the second clamping member together in a state in which the elongated object is sandwiched between the first elastic member and the second elastic member;
a separation suppression portion that suppresses separation of the first clamping member and the second clamping member from each other when the first elastic member and the second elastic member sandwich and support the elongated object;
Equipped with
The separation suppression unit is
a first temporary locking engagement portion that is provided in the screw through hole of the first elastic member and has an inner diameter dimension smaller than an outer diameter dimension of the male thread portion of the fastening screw and temporarily locks the fastening screw;
a second temporary locking engagement portion that is provided in the screw through hole of the second elastic member and has an inner diameter dimension smaller than an outer diameter dimension of the male thread portion of the fastening screw and temporarily locks the fastening screw;
A support structure for a long object, comprising : A support structure for a long object provided in an engine, comprising:
a first clamping member having a first elastic member for supporting an outer surface of the elongated object;
a second clamping member facing the first clamping member and having a second elastic member supporting the outer surface of the elongated object;
a fastening screw that fastens the first clamping member and the second clamping member together in a state in which the elongated object is sandwiched between the first elastic member and the second elastic member;
a separation suppression portion that suppresses separation of the first clamping member and the second clamping member from each other when the first elastic member and the second elastic member sandwich and support the elongated object;
Equipped with
the first elastic member has a plurality of first curved portions into which a portion of the elongated object fits,
the second elastic member has a plurality of second curved portions that are provided opposite the plurality of first curved portions and into which a portion of the elongated object is fitted,
A support structure for elongated objects, characterized in that at least one of the first elastic member and the second elastic member has a dummy member that fills any of the first curved portions and any of the second curved portions that face each other among the multiple first curved portions and the multiple second curved portions . the first elastic member has a plurality of first curved portions into which a portion of the elongated object fits;
the second elastic member has a plurality of second curved portions that are provided opposite the plurality of first curved portions and into which a portion of the elongated object is fitted,
A support structure for elongated objects as described in any one of claims 1 to 3, characterized in that at least one of the first elastic member and the second elastic member has a dummy member that fills in any of the first curved portions and any of the second curved portions that face each other among the multiple first curved portions and the multiple second curved portions. 6. The support structure for an elongated object according to claim 1, wherein the elongated object is a fuel injection pipe for a diesel engine.

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