JP2021113563A - Pipe fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe fixing structure which can easily position a pipe and avoid the influence of resonance due to vibration when fixing a pipe free of charge at both ends.
SOLUTION: This is a pipe fixing structure 1 for fixing a pipe 2 free at both ends, and has a bracket (base member) 11 and an elastic body portion fixed to the bracket 11 and sandwiching a portion other than both ends of the pipe 2. It is fixed to the clip (holding member) 12 and the pipe 2, engages with the bracket 11 to regulate the rotation of the pipe 2 around the axis, and abuts on the sand clip 12 in the longitudinal direction of the pipe 2 with respect to the sand clip 12. A plate (positioning member) 13 for positioning the position of the above is provided.
[Selection diagram] Fig. 1

Description

The present disclosure relates to a pipe fixing structure.

As a fixing structure for fixing the pipe, for example, there is a pipe fixing structure described in Patent Document 1. This conventional pipe fixing structure includes a base member that supports the pipe and a holding member that cooperates with the base member to sandwich the pipe. The pressing member is openably and closably connected to the base member and is fastened to the base member by a fastener. A cushion material is provided for each of the base member and the pressing member, and the pipe is sandwiched between the cushion materials.

Japanese Unexamined Patent Publication No. 2013-181369

Around the engine of the vehicle, for example, a plurality of pipes for circulating fuel, oil, cooling water, etc. are arranged. Such a pipe may include a pipe free of charge at both ends, which is not fixed by a fixing member at both ends and is connected to another pipe or the like by a hose or the like. When fixing such a pipe free of both ends at a part other than both ends, for example, a method of attaching a resin sand clip (holding member) to the fixing bracket and holding the pipe with the sand clip, or for fixing to the pipe. A method of joining the brackets by brazing or the like can be considered.

However, in the former method, since the position of the pipe in the longitudinal direction is not determined when the pipe is assembled, it is necessary to mark the pipe for positioning. There is also a problem that the position around the axis of the pipe cannot be determined. In the latter method, the piping is easy to position, but resonance may occur due to vibration transmitted from the vehicle. Therefore, the joint portion with the bracket may be damaged.

The present disclosure has been made to solve the above problems, and provides a pipe fixing structure that facilitates positioning of pipes and can avoid the influence of resonance due to vibration when fixing pipes free of both ends. With the goal.

The pipe fixing structure according to one aspect of the present disclosure is a pipe fixing structure for fixing a pipe free of charge at both ends, and has a base member and an elastic body portion fixed to the base member and sandwiching a part other than both ends of the pipe. A sandwiching member and a positioning member that is fixed to the piping and engages with the base member to regulate the rotation of the piping around the axis and abuts on the sandwiching member to position the position of the piping in the longitudinal direction with respect to the sandwiching member. Be prepared.

In this pipe fixing structure, the rotation around the axis of the pipe can be regulated by engaging the positioning member fixed to the pipe with the base member, and the length of the pipe with respect to the holding member can be regulated by bringing the positioning member into contact with the holding member. The position in the direction can be positioned. Further, since the sandwiching member fixed to the base member has an elastic body portion that sandwiches a portion other than both ends of the pipe, vibration transmitted from the vehicle can be absorbed. Therefore, the influence of resonance due to vibration can be avoided.

The sandwiching member and the positioning member may each have a flat surface portion that comes into contact with each other. This makes it possible to improve workability when the positioning member is brought into contact with the holding member.

The positioning member may have a pair of protrusions that fit into the base member. This makes it possible to regulate the rotation of the pipe around the axis with a simple configuration.

According to the present disclosure, when fixing a pipe free of charge at both ends, the pipe can be easily positioned and the influence of resonance due to vibration can be avoided.

It is a perspective view which shows one Embodiment of a pipe fixing structure. It is an exploded perspective view which shows the pipe fixing structure shown in FIG. It is a perspective view which shows the pipe fixing structure shown in FIG. 1 from another angle.

Hereinafter, a preferred embodiment of the pipe fixing structure according to one aspect of the present disclosure will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a pipe fixing structure. Further, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a perspective view of the pipe fixing structure viewed from another angle. The pipe fixing structure 1 shown in FIGS. 1 to 3 is a structure applied around the engine of a vehicle, for example. Examples of vehicles to which the pipe fixing structure 1 is applied include commercial vehicles such as buses and industrial vehicles such as trucks and excavators. The vehicle may be a large vehicle, a medium-sized vehicle, an ordinary passenger car, a small vehicle, or a light vehicle.

The pipe 2 fixed by the pipe fixing structure 1 is a pipe free of both ends, in which one end 2a and the other end 2b are not fixed by a fixing member and are connected to another pipe or the like with a hose or the like. The pipe fixing structure 1 has a structure in which one portion of the pipe 2 free at both ends other than both ends is fixed. The type of the pipe 2 is not particularly limited, but is, for example, a pipe for circulating fuel, oil, cooling water, or the like. The shape of the pipe 2 is not particularly limited, but in the present embodiment, one end 2a and the other end 2b of the pipe are bent with respect to the central portion 2c of the pipe 2.

The pipe fixing structure 1 includes a bracket (base member) 11, a sand clip (holding member) 12, and a plate (positioning member) 13. The bracket 11 is formed in a plate shape by, for example, metal, and is fixed to a wall portion K or the like on the vehicle side. The bracket 11 protrudes from the wall portion K on the vehicle side with a certain length.

The sand clip 12 is a member that sandwiches the pipe 2. The sand clip 12 includes a base portion 14 fixed to the tip end portion of the bracket 11, and a cover portion 15 that is detachably attached to the base portion 14. The base portion 14 is provided with a recess 14a (see FIG. 2) corresponding to one half portion of the cross-sectional shape of the pipe 2. The bracket 11 described above is provided with a screw portion 16 (see FIG. 2) for fixing the cover portion 15. The bracket 11 and the screw portion 16 may be integrated by welding or the like, or may be integrated by fitting the screw portion 16 into a screw hole provided in the bracket 11. The cover portion 15 is provided with a recess 15a (see FIG. 2) corresponding to the other half portion of the cross-sectional shape of the pipe 2. Further, the cover portion 15 is provided with an insertion hole 15b (see FIG. 2) through which the screw portion 16 is inserted, and the base portion 14 is provided with an insertion hole (not shown) similar to the insertion hole 15b. A flat surface portion 17 is provided on each of the side surfaces of the base portion 14 and the cover portion 15 (the surface on which the open ends of the recesses 14a and 15a are formed).

The sand clip 12 has an elastic body portion that sandwiches the pipe 2. In this case, the entire portion of the base portion 14 and the cover portion 15 of the sand clip 12 excluding the screw portion 16 and the nut 18 may be formed of an elastic body such as rubber. Further, of the base portion 14 and the cover portion 15 of the sand clip 12, only the inner portion that defines the recesses 14a and 15a may be formed of an elastic body such as rubber, and the remaining outer portion may be formed of metal. In this sand clip 12, the nut 18 is fitted into the screw portion 16 in a state where a predetermined portion of the pipe 2 (a portion other than one end 2a and the other end 2b) is fitted into the recess 14a on the base 14 side and the recess 15a on the cover 15 side. By screwing, the pipe 2 is firmly held between the recesses 14a and 15a.

The plate 13 is a member that positions the pipe 2 with respect to the sand clip 12. The plate 13 is formed in a rectangular shape by, for example, metal. Both sides of the plate 13 are flat surfaces 21. The shape of the flat surface portion 21 is substantially the same as that of the flat surface portion 17 of the base portion 14 of the sand clip 12, for example. A recess 13a (see FIG. 3) corresponding to a half portion of the cross-sectional shape of the pipe 2 is provided at one edge of the plate 13. The plate 13 is fixed to the pipe 2 in advance by joining the recess 13a to the outer wall of the pipe 2 by brazing or the like. Further, a pair of protrusions 13b, 13b formed at intervals corresponding to the width of the bracket 11 are provided on the other edge of the plate 13.

The plate 13 functions as a positioning member for positioning the position of the pipe 2 in the longitudinal direction with respect to the sand clip 12 when one of the flat surface portions 21 of the plate 13 and the flat surface portion 17 of the sand clip 12 come into contact with each other. Further, the plate 13 functions as a regulating member that regulates the rotation of the pipe 2 around the axis by fitting the pair of protrusions 13b, 13b to the bracket 11. In the examples of FIGS. 1 to 3, the flat surface portion 21 of the plate 13 is in contact with only the flat surface portion 17 of the base portion 14 of the sand clip 12, but the flat surface portion 21 of the plate 13 is the cover portion 15 of the sand clip 12. It may be in contact with only the flat surface portion 17 of the base portion 14, or may be in contact with both the flat surface portion 17 of the base portion 14 and the flat surface portion 17 of the cover portion 15.

As described above, in the pipe fixing structure 1, the rotation of the pipe 2 around the axis can be regulated by engaging the plate 13 fixed to the pipe 2 with the bracket 11. Further, by bringing the plate 13 into contact with the sand clip 12, the position of the pipe 2 in the longitudinal direction with respect to the sand clip 12 can be positioned. Since the position of the pipe 2 in the longitudinal direction is determined by the contact of the plates 13 when the pipe 2 is assembled, it is not necessary to mark the pipe 2 for positioning, and the space for positioning is provided in the longitudinal direction of the pipe 2. There is no need to secure it on the extension. Further, since the sand clip 12 fixed to the bracket 11 has an elastic body portion that sandwiches a portion other than both ends of the pipe 2, it is possible to absorb vibration transmitted from the vehicle. Therefore, the influence of resonance due to vibration can be avoided, and damage to the fixed portion between the pipe 2 and the plate 13 can be suppressed.

Further, the pipe fixing structure 1 has a flat surface portion 17 in which the sand clip 12 and the plate 13 are in contact with each other. This makes it possible to improve workability when the plate 13 is brought into contact with the sand clip 12.

Further, in the pipe fixing structure 1, the plate 13 has a pair of protrusions 13b and 13b that are fitted to the bracket 11. As a result, the rotation of the pipe 2 around the axis can be regulated with a simple configuration in which the pair of protrusions 13b, 13b are fitted to the bracket 11.

The present disclosure is not limited to the above embodiment. For example, in the above embodiment, the rotation of the pipe 2 around the axis is restricted by fitting the pair of protrusions 13b, 13b provided on the plate 13 to the bracket 11, but the rotation of the pipe 2 around the axis is restricted. The configuration for doing so is not limited to this. For example, a pin may be provided on the plate 13 and the pin may be inserted into the hole of the bracket 11.

Further, in the above embodiment, both the flat surface portion 17 on the sand clip 12 side and the flat surface portion 17 on the plate 13 side are provided, but these flat surface portions 17 do not necessarily have to be provided. Only one of the flat surface portion 17 on the sand clip 12 side and the flat surface portion 17 on the plate 13 side may be provided.

1 ... Piping fixing structure, 2 ... Piping, 11 ... Bracket (base member) 11, 12 ... Sand clip (holding member), 13 ... Plate (positioning member), 13b ... Protrusion, 17, 21 ... Flat surface.

Claims (3)

It is a pipe fixing structure that fixes pipes that are free on both ends.
With the base member
A sandwiching member fixed to the base member and having an elastic body portion that sandwiches a portion other than both ends of the pipe.
A positioning member fixed to the pipe, engaged with the base member to regulate the rotation of the pipe around the axis, and abutting the holding member to position the position of the pipe in the longitudinal direction with respect to the holding member. , With a pipe fixing structure. The pipe fixing structure according to claim 1, wherein the sandwiching member and the positioning member each have a flat surface portion that abuts against each other. The pipe fixing structure according to claim 1 or 2, wherein the positioning member has a pair of protrusions fitted to the base member.

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