JP2018035870A - Hose mounting pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hose mounting pipe capable of suppressing interference with other components in a space in which the hose mounting pipe is arranged while suppressing enlargement of the hose mounting pipe itself.SOLUTION: A hose mounting pipe 21 has a flange-shaped hose stopper 25 extending in a radial outer side. A hose 31 connected to cover an outer peripheral surface 30 on the distal end side compared to the hose stopper 25 is fastened to the hose mounting pipe 21 by a hose clip 41. A step 29 integrally formed with the hose stopper 25 is provided on a surface 25A on the distal end side of the hose stopper 25.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hose attachment pipe to which a hose is fastened by a hose clip, for example, a hose attachment pipe arranged in a space where many parts are densely arranged like an engine compartment.

  In the attachment structure of the hose and the attachment pipe of the hose disclosed in Patent Document 1, the hose connected to the attachment pipe is detached from the attachment pipe so as to cover the outer peripheral surface on the distal end side of the attachment pipe. In order to suppress this, a hose clip is used. The hose clip used in the structure is formed by processing a strip-shaped member that can be elastically deformed. Specifically, the hose clip has an annular clip body and a pair of protruding pieces that protrude radially outward from the clip body. In such a hose clip, when the pair of projecting pieces are brought close to each other in the circumferential direction, the clip main body is elastically deformed to be expanded in diameter.

  Moreover, in the said structure, the holder which controls the displacement of a protrusion piece so that a protrusion piece may be enclosed is provided in the outer peripheral surface of the attachment pipe. Specifically, the holder has a fixed portion fixed to the attachment tube and a pair of arm portions protruding from the fixed portion toward the tip of the attachment tube. The pair of arm portions are arranged at different positions in the circumferential direction of the attachment tube. And when connecting a hose to a mounting pipe, a pair of protrusion piece is arrange | positioned between a pair of arm parts in the said circumferential direction in the state by which the hose clip located in the outer peripheral side of a hose was expanded in diameter. That is, a pair of protruding pieces is inserted into the holder. Then, when the pair of protruding pieces are separated from each other in the circumferential direction in this state, the diameter of the hose clip is reduced, and the hose is urged radially inward by the hose clip. As a result, in a state where the hose is fastened to the attachment pipe by the hose clip, the hose is prevented from being detached from the attachment pipe, and the displacement of the hose clip in the circumferential direction is suppressed by the pair of arm portions of the holder. .

  In addition, the above structure may be arrange | positioned in the space in which many other components are accommodated. In this case, since the hose clip has a pair of projecting pieces projecting radially outward, depending on the position of the projecting piece in the circumferential direction, there is a possibility that other peripheral parts and the projecting piece may interfere with each other. . In this regard, as disclosed in Patent Document 1, in the structure in which the circumferential position of the protruding piece is determined according to the position of the holder in the circumferential direction of the mounting pipe, the peripheral position of the holder can be improved by devising the circumferential position of the holder. It is possible to suppress interference between other parts and the protruding piece.

JP 2011-002046 A

  In the structure disclosed in Patent Document 1, the arm portions are respectively disposed on both sides in the circumferential direction of the pair of protruding pieces. That is, since the holder itself for determining the position of the pair of protruding pieces in the circumferential direction is large, there is a concern about interference between the holder and other parts.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
The hose attachment pipe for solving the above-described problems includes a hose stopper. A hose connected to the hose attachment pipe so as to cover the outer peripheral surface on the tip side of the hose stopper is fastened by a hose clip. The hose stopper has a bowl shape extending radially outward, and a step formed integrally with the hose stopper is provided on the surface of the hose stopper on the tip side.

  According to the said structure, when connecting a hose to a hose attachment pipe, a hose attachment pipe will approach into a hose. At this time, by operating the hose stopper as an index for determining the position of the tip of the hose, when the tip of the hose contacts the hose stopper, the amount of the hose attachment tube entering into the hose does not increase. That is, it is possible to optimize the amount of the hose attachment pipe entering the hose.

  As the hose clip used when fastening the hose to the hose attachment tube, a hose clip having an annular clip body and a pair of projecting pieces projecting radially outward from the clip body is employed. Sometimes. In such a hose clip, the clip main body is elastically deformed and expanded in diameter by bringing the pair of projecting pieces closer to each other in the circumferential direction of the clip body, while the pair of projecting pieces are separated from each other in the circumferential direction by the clip. The main body is elastically deformed to reduce the diameter.

  In the above configuration, when the hose is connected to the hose attachment pipe, the step provided on the surface of the hose stopper facing the end surface of the hose is an index for determining the circumferential position of the pair of protruding pieces of the hose clip. Can be used as By using the step as such an index, the circumferential position of the pair of protruding pieces can be determined to some extent when the hose is fastened to the hose attachment pipe. Therefore, when the hose is fastened to the hose mounting pipe, it is possible to arrange the protruding piece at a position where interference with other parts arranged in the vicinity of the hose mounting pipe and the protruding piece of the hose clip can be avoided. Become.

  Moreover, in the said structure, the hose stopper in which the level | step difference is integrally molded has comprised the hook shape. Therefore, in the state where the hose is fastened to the hose mounting pipe, the hose mounting is compared with the case where the hose mounting pipe is provided with a holder in which the arm portions are respectively arranged on both circumferential sides of the pair of protruding pieces of the hose clip. An increase in the size of the tube can be suppressed.

  Therefore, it is possible to suppress interference between the pair of protruding pieces of the hose clip used for fastening the hose to the hose mounting pipe and the other parts while suppressing an increase in size of the hose mounting pipe itself.

The perspective view which shows one Embodiment of a hose attachment pipe, the hose connected to the said hose attachment pipe, and the hose clip used when fastening a hose to the said hose attachment pipe. The top view of the hose attachment pipe concerning the embodiment. The perspective view which shows a mode that a hose is connected to the hose attachment pipe concerning the embodiment. The perspective view which shows the state by which the hose was fastened by the hose attachment pipe concerning the embodiment.

Hereinafter, an embodiment of a hose attachment pipe will be described with reference to FIGS.
A hose attachment pipe 21 shown in FIG. 1 is disposed in an engine compartment in which a large number of vehicle parts are densely arranged. As shown in FIG. 1, the hose attachment tube 21 has a hook-shaped hose stopper 25 that extends from the outer peripheral surface 30 of the tube to the outside in the radial direction of the tube. A tubular hose 31 is connected to the distal end portion 22, which is a portion closer to the distal end than the hose stopper 25, along the axis C that is the central axis of the distal end portion 22. Specifically, as shown in FIGS. 1 and 3, a hose 31 is connected to the distal end portion 22 of the hose attachment tube 21 so as to cover the outer peripheral surface 30. The state in which the hose 31 is connected to the distal end portion 22 is referred to as a connected state.

  As shown in FIGS. 1 and 3, a step 29 is provided on the surface of the hose stopper 25 on the tip 22 side, that is, the surface 25 </ b> A that faces the end surface 33 of the hose 31 when connected. ing.

  The hose attachment tube 21 is provided with a bolt insertion plate 23 having a hole 24 through which a bolt can be inserted. The hose attachment tube 21 is fixed to another member by fastening using a bolt inserted into the hole 24.

  In the present embodiment, a hose 31 whose inner diameter is less than the outer diameter of the distal end portion 22 of the hose attachment pipe 21 is employed as the hose connected to the hose attachment pipe 21. The hose 31 is made of a material that expands and contracts, such as resin or synthetic rubber. Therefore, when the connection state is set, the tip 22 is inserted into the hose 31 so that the inserted portion 32 that is the end of the hose 31 is stretched.

  As shown in FIG. 4, the hose 31 connected to the tip portion 22 can be fastened to the hose attachment tube 21 by a hose clip 41. As shown in FIGS. 1 and 3, the hose clip 41 used to fasten the hose 31 to the hose attachment tube 21 is formed by processing a strip-shaped metal plate. Specifically, the hose clip 41 is a substantially annular and clip body 42 that can generate a radially inward biasing force, and a pair of protruding pieces that protrude radially outward from the clip body 42. 1 projecting piece 43 and second projecting piece 44. The first protruding piece 43 is configured by bending one end of a strip-shaped metal plate constituting the hose clip 41. Moreover, the 2nd protrusion piece 44 is comprised by bending the other end part of a strip-shaped metal plate. Further, the first projecting piece 43 is formed with a communicating portion 46 through which the space on the one side and the space on the other side communicate with each other in the circumferential direction of the clip body 42. And the clip main body 42 is expanded in diameter by the elastic deformation of the metal plate which comprises the hose clip 41 by making the 1st protrusion piece 43 and the 2nd protrusion piece 44 mutually approach in the circumferential direction. . FIG. 1 shows the hose clip 41 in an expanded state. Thus, when the hose clip 41 is in a diameter-expanded state, the inner diameter of the clip body 42 is larger than the outer diameter of the hose 31.

  Further, in the vicinity of the second projecting piece 44 in the clip main body 42, a lock claw 45 projects outward in the radial direction. The lock claw 45 is a protruding piece that is smaller than the first protruding piece 43 and the second protruding piece 44 and can pass through the communicating portion 46 of the first protruding piece 43. As shown in FIG. 1, when the clip main body 42 is in an expanded state, the lock claw 45 is disposed on the opposite side of the second protruding piece 44 with the first protruding piece 43 interposed therebetween in the circumferential direction of the clip main body 42. And is locked to the first protruding piece 43. That is, by locking the lock claw 45 to the first projecting piece 43, the hose clip 41 is maintained in an expanded state. When the locking claw 45 and the first protruding piece 43 are unlocked and the locking claw 45 passes through the communication portion 46 of the first protruding piece 43, the elastic deformation of the metal plate constituting the hose clip 41 is performed. As a result, the diameter of the clip main body 42 is reduced, and the first protruding piece 43 and the second protruding piece 44 are separated from each other in the circumferential direction of the clip main body 42.

The hose stopper 25 and the step 29 of the hose attachment pipe 21 will be described in detail with reference to FIGS.
As shown in FIG. 2, the hose stopper 25 is configured to have a substantially arc shape, and one end thereof (the upper end in FIG. 2) is connected to the bolt insertion plate 23. The hose stopper 25 extends in the counterclockwise direction in the figure from the upper end 26 connected to the bolt insertion plate 23. And when the distance from the upper end 26 to the lower end 27 of the hose stopper 25 in the circumferential direction of the hose attachment pipe 21 is the range D of the hose stopper 25, the range D is when the hose 31 is fastened to the hose attachment pipe 21. The distance between the tip of the first protruding piece 43 and the tip of the second protruding piece 44 of the hose clip 41 is wider (see FIG. 4). Further, in the range D, if the first projecting piece 43 and the second projecting piece 44 are located within this range, the vicinity of the first projecting piece 43 and the second projecting piece 44 and the hose attachment pipe 21 is provided. This is a range in which it is ensured that other vehicle parts arranged in the vehicle do not interfere with each other.

  As shown in FIGS. 3 and 4, in the radial direction of the hose attachment tube 21, the outer edge 28 of the hose stopper 25 is on the outer peripheral side of the insertion portion 32 to fasten the hose 31 to the hose attachment tube 21. The hose clip 41 disposed in the hose clip 41 is located on the inner side than the tips of the first protruding piece 43 and the second protruding piece 44.

  As shown in FIGS. 2 and 3, the step 29 formed on the surface 25 </ b> A of the hose stopper 25 is a concave groove extending in the radial direction of the hose attachment tube 21. In the present embodiment, the step 29 extends from the radially inner end of the hose stopper 25 to the radially outer end. Further, as shown in FIG. 2, in the present embodiment, the step 29 is arranged slightly closer to the lower end 27 than the middle between the upper end 26 and the lower end 27 of the hose stopper 25.

  Such a step 29 is formed integrally with the hose stopper 25. For example, when the hose stopper 25 is manufactured, the hose stopper 25 is provided with a convex portion, a concave portion or the like (in the present embodiment, a protruding portion) corresponding to the step 29 in the mold for the hose stopper 25. Can be integrally molded.

Next, together with the procedure (action) when the hose 31 is fastened to the hose attachment pipe 21 according to the present embodiment, the effect will be described.
As shown in FIG. 3, the hose 31 is connected to the distal end portion 22 of the hose attachment pipe 21 in a state where the hose clip 41 is disposed on the outer peripheral side thereof. At this time, the tip 22 of the hose attachment tube 21 is inserted into the hose 31. When the end surface 33 of the hose 31 contacts the hose stopper 25, the amount of the hose attachment pipe 21 entering the hose 31 does not increase. That is, by making the hose stopper 25 function as an index for determining the position of the end surface 33 of the hose 31, it is possible to optimize the amount of the hose attachment pipe 21 entering the hose 31. Incidentally, in this example, the hose attachment tube 21 is made to enter the hose 31 until the end surface 33 of the hose 31 contacts the hose stopper 25. However, before the end surface 33 of the hose 31 contacts the hose stopper 25 In addition, the connection of the hose 31 to the hose attachment pipe 21, that is, the entry of the hose attachment pipe 21 into the hose 31 may be completed.

  When the hose 31 is connected to the hose attachment pipe 21, the hose clip 41 is maintained in an expanded state because the lock claw 45 is engaged with the first protruding piece 43. That is, as shown in FIG. 3, when the hose 31 is connected to the hose attachment pipe 21, the hose clip 41 is rotatable in the circumferential direction of the hose 31. Then, using the step 29 provided on the surface 25A of the hose stopper 25 as an index, the direction of the hose clip 41, that is, the circumferential position of the first protruding piece 43 and the second protruding piece 44 can be determined.

  For example, as shown in FIG. 3, the hose clip 41 in the diameter-expanded state is arranged so that the step 29 is located at the center between the first protruding piece 43 and the second protruding piece 44 in the circumferential direction. Then, when the locking claw 45 is released from the engagement with the first protruding piece 43 and the locking claw 45 is passed through the communication portion 46 of the first protruding piece 43, the first protruding piece 43 and the second protruding piece 43 are connected. The protruding pieces 44 are separated from each other in the circumferential direction, and the diameter of the hose clip 41 is reduced. At this time, the first protruding piece 43 and the second protruding piece 44 are displaced so as to be separated from the step 29 in the circumferential direction. Then, as shown in FIG. 4, the inserted portion 32 of the hose 31 is urged radially inward by the hose clip 41. As a result, the hose 31 is fastened to the distal end portion 22 of the hose attachment tube 21.

  As shown in FIG. 4, in a state where the hose 31 is fastened to the hose attachment pipe 21, the first protruding piece 43 is positioned on the step 29 side from the upper end 26 of the hose stopper 25 in the circumferential direction. The protruding piece 44 is positioned closer to the step 29 than the lower end 27 of the hose stopper 25. That is, by using the step 29 as an index, the respective circumferential positions of the first protruding piece 43 and the second protruding piece 44 can be determined to some extent. Therefore, by arranging the hose stopper 25 at a position where there are no other vehicle parts near the hose attachment pipe 21, the first hose clip 41 and the other vehicle parts arranged in the vicinity of the hose attachment pipe 21. Interference with the protruding piece 43 and the second protruding piece 44 can be avoided.

  In addition, the hose stopper 25 can be used as an index as to whether or not the first projecting piece 43 and the second projecting piece 44 are disposed at assumed positions. If the first projecting piece 43 and the second projecting piece 44 are not within the range D in a state where the diameter of the hose clip 41 is reduced (see FIG. 4), the first projecting piece 43 and the second projecting piece 43 It can be assumed that the position of the protruding piece 44 is deviated from the assumed position. That is, the first projecting piece 43 and the second projecting piece 44 may interfere with other vehicle parts arranged in the vicinity of the hose attachment pipe 21. In such a case, the orientation of the hose clip 41 is adjusted again.

  Further, in a state where the hose 31 is fastened to the hose attachment pipe 21 by the hose clip 41, the edge portion 28 of the hose stopper 25 is radially inward from the tips of the first protruding piece 43 and the second protruding piece 44. positioned. That is, the hose stopper 25 is provided smaller in the radial direction than the first projecting piece 43 and the second projecting piece 44. In other words, it can be said that the hose stopper 25 is provided so as not to interfere with other vehicle parts disposed in the vicinity of the hose attachment pipe 21.

Next, the effect of the hose attachment tube 21 of this embodiment will be described.
In the hose attachment pipe 21, the hose stopper 25 in which the step 29 is integrally formed has a hook shape. Therefore, the hose attachment tube 21 can be prevented from increasing in size compared to the case where the hose attachment tube is provided with holders in which the arm portions are respectively arranged on both sides in the circumferential direction of the protruding piece of the hose clip.

  In addition, as an index for determining the position of the protruding piece, for example, it is conceivable to employ a mark with paint applied to the hose stopper 25. In this case, however, a manufacturing process is required to attach the paint to the hose stopper 25. It will increase. On the other hand, in this embodiment, since the level | step difference 29 is integrally molded with the hose stopper 25, an index | index can be provided in the hose stopper 25, without increasing a manufacturing process.

  As described above, according to the hose attachment tube 21, the hose attachment tube 21 is a pair of protruding pieces of the hose clip 41 used for fastening the hose 31 to the hose attachment tube 21 while suppressing an increase in size of the hose attachment tube 21 itself. It becomes possible to suppress interference between the one protruding piece 43 and the second protruding piece 44 and other components arranged in the vicinity of the hose attachment pipe 21.

In addition, the said embodiment can also be implemented with the following forms which changed this suitably.
As a hose clip, a hose clip other than the hose clip 41 may be used as long as the hose 31 can be urged radially inward when the hose 31 is fastened to the hose attachment tube 21. it can. For example, a hose clip that is not provided with the lock claw 45 may be used. That is, if the hose clip has a portion protruding in the radial direction, the step 29 integrally formed with the hose stopper 25 is used as an index for determining the circumferential position of the protruding portion. be able to.

  “Using the step 29 as an index” does not mean that the step 29 is aligned with the center of the first protruding piece 43 and the second protruding piece 44 as shown in the above embodiment. For example, if the first projecting piece 43 and the second projecting piece 44 can be accommodated within the range D of the hose stopper 25, the circumferential position of the first projecting piece 43 is set to the circumferential position of the step 29. In addition, the diameter of the hose clip 41 may be reduced in this state. Further, the circumferential position of the second projecting piece 44 may be matched with the circumferential position of the step 29, and the diameter of the hose clip 41 may be reduced in this state.

-The bolt insertion board 23 provided in the hose attachment pipe 21 is not an essential structure.
-As long as the hose attachment pipe is a pipe having a portion to which the hose is connected and the hose stopper 25, the hose attachment pipe may be any pipe other than the hose attachment pipe 21 in the above embodiment.

  The hose stopper 25 may have a shape other than a substantially arc shape as long as the step 29 can be provided on the surface 25A. For example, the hose stopper 25 may be an annular hose stopper.

  -A level | step difference can also be formed by shapes other than a ditch | groove. For example, the step may be a protrusion provided on the surface 25 </ b> A of the hose stopper 25. Further, the step may be constituted by a plurality of concave portions provided on the surface 25A of the hose stopper 25, or may be constituted by a plurality of convex portions provided on the surface 25A. It may be constituted by at least one concave portion and at least one convex portion.

  DESCRIPTION OF SYMBOLS 21 ... Hose attachment pipe, 22 ... Tip part, 23 ... Bolt insertion plate, 24 ... Hole, 25 ... Hose stopper, 25A ... Surface, 26 ... Upper part, 27 ... Lower part, 28 ... Edge, 29 ... Step, 30 ... Outer circumference Surface, 31 ... hose, 32 ... inserted portion, 33 ... end face, 41 ... hose clip, 42 ... clip body, 43 ... first protruding piece, 44 ... second protruding piece, 45 ... lock claw, 46 ... communication Department.

Claims (1)

A hose attachment pipe provided with a hose stopper, a hose connected to cover the outer peripheral surface on the tip side of the hose stopper is fastened by a hose clip,
The hose stopper has a hook shape extending outward in the radial direction,
A hose attachment pipe provided with a step formed integrally with the hose stopper on the surface on the tip side of the hose stopper.

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