JP2015129568A - exterior member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior member which can be easily attached to an outer surface of an attachment object having a tubular or rod-like form.SOLUTION: An exterior member 10 is attached to a tubular filler pipe P (an attachment object) so as to cover an outer peripheral surface of the filler pipe P. The exterior member 10 includes: a support part 11 which extends substantially parallel to an axis direction of the filler pipe P and can elastically deform so as to come close to or separate from the outer peripheral surface of the filler pipe P; and multiple elastic holding pieces 13 which extend from a side edge 12 of the support part 11 along a circumferential direction in a cantilever manner so as to enclose the filler pipe P, are disposed spaced away from each other in the axis direction of the filler pipe P, and can elastically deform so as to expand diameters independently of each other.

Description

  The present invention relates to an exterior member.

  Patent Document 1 discloses an insulator that is attached to the exhaust pipe so as to cover the outer periphery as means for preventing resonance and abnormal noise in the exhaust pipe. The insulator is composed of two substantially semicircular fixed plates that are combined so as to sandwich the exhaust pipe.

JP 09-032546 A

  In the insulator of Patent Document 1, since a fastening means using a bolt and a nut is used as a means for fixing the two fixing plates in a combined state, it takes time for fixing work. In particular, when the insulator is long, the number of bolts and nuts increases, so that the number of tightening steps increases, and the workability decreases.

  This invention is completed based on the above situations, Comprising: It aims at providing the exterior member which can be easily attached to the outer surface of the attachment object which makes | forms a tubular shape or rod shape.

The exterior member of the present invention is
It is an exterior member that is attached so as to cover the outer peripheral surface of a tubular or rod-like attachment object,
A support portion that is in a form extending substantially parallel to the axial direction of the attachment object, and capable of elastic deformation to approach and separate from the outer peripheral surface of the attachment object;
It is a form that extends in a cantilever manner along the circumferential direction so as to surround the attachment object from the side edge of the support part, and is arranged at an interval in the axial direction of the attachment object, independent of each other. And a plurality of elastic holding pieces capable of elastic deformation so as to expand in diameter.

  When the exterior member is attached to the attachment object, the support portion is elastically deformed, and the plurality of elastic holding pieces are sequentially fitted on the outer periphery of the attachment object while being subjected to diameter expansion deformation. At this time, since it is not necessary to elastically deform all of the plurality of elastic holding pieces all at once, workability is good. Moreover, in the state which attached the exterior member to the attachment target object, since the some elastic holding piece surrounds the attachment target object, the reliability of a holding function is high.

The side view showing the state which attached the exterior member of Example 1 to the filler pipe (attachment target object) Side view showing the process of attaching the exterior member to the filler pipe Top view of exterior member XX sectional view of FIG. The side view showing the state which attached the exterior member of Example 2 to the filler pipe (attachment target object)

  (1) The exterior member of the present invention may be formed such that the plurality of elastic locking pieces extend in opposite directions from both side edges of the support member. According to this configuration, when the circumferential dimension of the support portion and the elastic holding piece is the same, the elastic holding piece extends from only one side edge of the support portion. The length of the elastic holding piece is shortened. This means that the holding force of one elastic holding piece is high, so that the holding force of the entire exterior member is also high.

  (2) The exterior member of the present invention may be arranged in parallel in the axial direction so that the plurality of elastic holding pieces are adjacent to each other via a slit. According to this configuration, since the contact area of the plurality of elastic holding pieces with respect to the attachment target is ensured widely, the holding force is high accordingly.

  (3) As for the exterior member of this invention, the extension end part of the said elastic holding piece may be latched in the circumferential direction or an axial direction with respect to the stopper provided in the outer peripheral surface of the said attachment target object. According to this configuration, the exterior member can be positioned in the circumferential direction or the axial direction with respect to the attachment object.

  (4) As for the exterior member of this invention, the guidance | induction part of the form bent outward so that it might separate from the outer peripheral surface of the said attachment target object may be formed in the extension end part of the said elastic holding piece. According to this configuration, when the elastic holding piece is expanded and deformed, the extended end portion of the elastic holding piece is less likely to be caught on the outer peripheral surface of the object to be attached, so that workability is improved.

<Example 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. The attachment object of the exterior member 10 of the present embodiment is a cylindrical filler pipe P made of a synthetic resin material. A pair of stoppers S is formed on the outer peripheral surface of the filler pipe P. The stopper S has a form protruding in a rib shape from the outer peripheral surface of the filler pipe P, and a circumferential positioning portion Sa that extends continuously in a straight line parallel to the axial direction, and both end portions of the circumferential positioning portion Sa. And a pair of axial positioning portions Sb extending in the circumferential direction.

  The exterior member 10 is attached to the filler pipe P so as to cover the outer peripheral surface thereof. The exterior member 10 attached to the filler pipe P functions as an insulator (heat insulating means) that suppresses the transfer of heat to the surface of the filler pipe P, and functions as a protector that protects against damage from foreign matter interference.

  The exterior member 10 is a single member made of an elastically deformable metallic plate material. The shape (cross-sectional shape) when the exterior member 10 is viewed in parallel with the axis of the filler pipe P has an arc shape in which a part in the circumferential direction is separated. That is, the formation region of the exterior member 10 in the circumferential direction of the filler pipe P is not less than a half circumference and less than the entire circumference. The exterior member 10 is configured by integrally forming one support portion 11 and 16 (eight pairs) elastic holding pieces 13.

  The support portion 11 has a strip-like shape that extends in a long and thin manner parallel to the axis of the filler pipe P. The left and right side edges 12 of the support portion 11 extend parallel to the axis of the filler pipe P. 16 elastic holding pieces 13 are in the form of a strip that is curved in an arc shape along the circumferential direction of the filler pipe P, and the same number of pieces from the right side edge 12 and the left side edge 12 of the support portion 11. It extends into a holding shape. The extension dimension of the elastic holding piece 13 from the side edge 12 of the support portion 11 is the same for all the elastic holding pieces 13. The width dimension of the elastic holding piece 13 (the dimension in the direction parallel to the axis of the filler pipe P) is the same for all the elastic holding pieces 13. In the extended end portion of each elastic holding piece 13, a guide portion 14 is formed that is bent outward in the radial direction so as to be away from the outer peripheral surface of the filler pipe P.

  The eight elastic holding pieces 13 extending from the right side edge 12 of the support portion 11 are arranged in parallel at a constant pitch along the axial direction of the filler pipe P. Between the elastic holding pieces 13 on the right side adjacent to each other in the axial direction, a slit 15 having a shape cut from the outer edge 12 of the exterior member 10 toward the support portion 11 is formed. The width dimension of the slit 15 is smaller than the width dimension of the elastic holding piece 13. Eight elastic holding pieces 13 extending from the left side edge 12 of the support portion 11 are also arranged in parallel along the axial direction at the same uniform pitch as the right elastic holding pieces 13. A slit 15 similar to that of the right elastic holding piece 13 is formed between the left elastic holding pieces 13 adjacent in the axial direction.

  The eight elastic holding pieces 13 extending from the right side edge 12 of the support portion 11 and the eight elastic holding pieces 13 extending from the left side edge 12 have virtual symmetric axes (not shown) parallel to the axial direction. ). Therefore, the exterior member 10 as a whole is symmetric with respect to a virtual symmetry axis parallel to the axial direction.

  As described above, the exterior member 10 of the present embodiment has a form extending substantially parallel to the axial direction of the filler pipe P and capable of elastic deformation so as to approach and separate from the outer peripheral surface of the filler pipe P. 11 and eight pairs of elastic holding pieces 13. The eight pairs of elastic holding pieces 13 are cantilevered along the circumferential direction so as to surround the filler pipe P from both side edges 12 of the support portion 11, and are spaced apart in the axial direction of the filler pipe P. Elastic deformation is possible such that the holes are spaced apart and expand in diameter independently of each other.

  When attaching the exterior member 10 to the filler pipe P, as shown in FIG. 2, the support portion 11 is warped and elastically curved and deformed away from the filler pipe P, and the interval between the slits 15 is increased. The elastic holding piece 13 formed at one end of the support portion 11 is fitted on the filler pipe P. At this time, only the elastic holding piece 13 in contact with the outer peripheral surface of the filler pipe P is elastically deformed so as to temporarily expand the diameter. Then, when the elastic holding piece 13 that has been expanded and deformed is elastically restored so that the diameter thereof is reduced, the portion of the support portion 11 where the elastic holding piece 13 that is elastically restored continues to the outer peripheral surface of the filler pipe P. Abut.

  After the elastic holding piece 13 is temporarily expanded in diameter as described above, the operation of returning the elastic holding piece 13 so as to reduce the diameter is restored from the one end of the support portion 11 to the other while returning the curved deformation of the support portion 11. If it goes to this edge part sequentially, the exterior member 10 will be attached to the outer periphery of the filler pipe P. FIG. The attached exterior member 10 is held in an attached state by the elastic holding piece 13 that has been elastically restored.

  Thus, the exterior member 10 according to the present embodiment does not need to elastically deform all the elastic holding pieces 13 all at once, so that the workability is good. Further, since the extending end portion of the elastic holding piece 13 is formed with the guiding portion 14 that is bent outward so as to be separated from the outer peripheral surface of the filler pipe P, the elastic holding piece 13 is expanded in diameter. There is no possibility that the extended end portion of the elastic holding piece 13 sometimes pierces or gets caught on the outer peripheral surface of the filler pipe P. Thereby, the workability is further improved. And in the state which attached the exterior member 10 to the filler pipe P, since eight pairs of elastic holding pieces 13 surround the filler pipe P, the reliability of the holding function by the elastic holding pieces 13 is high.

  Moreover, the exterior member 10 of the present embodiment is formed such that eight pairs of elastic holding pieces 13 extend in opposite directions from the left and right side edges 12 of the support member 11 material. According to this configuration, when the circumferential dimensions of the support portion 11 and the elastic holding piece 13 are the same, the elastic holding piece 13 extends only from the left or right side edge 12 of the support portion 11. Compared with the case where it exists, the length of the one elastic holding piece 13 becomes short. This means that the holding force of one elastic holding piece 13 is high, so that the holding force of the exterior member 10 as a whole is also high.

  Further, the exterior member 10 of the present embodiment is arranged in parallel in the axial direction so that eight elastic holding pieces 13 are adjacent to each other through a narrow slit 15. Therefore, a wide contact area of the eight pairs of elastic holding pieces 13 with respect to the filler pipe P (that is, an area where the exterior member 10 covers the outer peripheral surface of the filler pipe P) is ensured. Thereby, the exterior member 10 not only has a high holding force with respect to the filler pipe P, but also can sufficiently function as an insulator (heat insulating means) and a protector.

  In the state in which the exterior member 10 is correctly attached to the filler pipe P, a pair of extended end portions of the eight pairs of elastic holding pieces 13 projecting from the outer peripheral surface of the filler pipe P as shown in FIGS. The stopper S is locked in the circumferential direction and the axial direction. That is, the extended end portion of the elastic holding piece 13 is sandwiched between the pair of circumferential positioning portions Sa in the circumferential direction, so that the exterior member 10 extends in the circumferential direction with respect to the filler pipe P. The movement is positioned in a restricted state. Further, the elastic holding pieces 13 positioned at both ends in the axial direction are sandwiched in contact with the axial positioning portion Sb in the axial direction, whereby the exterior member 10 moves in the axial direction with respect to the filler pipe P. Positioned in a regulated state.

<Example 2>
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, description is abbreviate | omitted about the same structure and effect as the said Example 1. FIG. The attachment object of the exterior member 20 of the second embodiment is the same filler pipe P as that of the first embodiment. As in the first embodiment, the exterior member 20 of the second embodiment is also attached to the filler pipe P so as to cover the outer peripheral surface thereof. The exterior member 20 attached to the filler pipe P exhibits a function as an insulator (heat insulating means) that suppresses the transfer of heat to the surface of the filler pipe P and a function as a protector that protects against damage due to foreign matter interference.

  The exterior member 20 is a single member made of an elastically deformable metal material. The shape (cross-sectional shape) when the exterior member 20 is viewed in parallel with the axis of the filler pipe P has an arc shape with a part in the circumferential direction separated (not shown). That is, the formation region of the exterior member 20 in the circumferential direction of the filler pipe P is not less than a half circumference and less than the entire circumference.

  The exterior member 20 as a whole is symmetrical with respect to a virtual symmetry axis (not shown) parallel to the axial direction. The exterior member 20 includes a single support portion 21, two pairs of elastic holding pieces 23, and a pair of plate-like functional portions 25. The support portion 21 has a strip shape extending in a long and thin shape in parallel with the axis of the filler pipe P. The left and right side edges 22 of the support portion 21 extend parallel to the axis of the filler pipe P.

  The two pairs of elastic holding pieces 23 are disposed at both ends of the support portion 21 in the axial direction, and extend in a cantilever shape from the right side edge 22 and the left side edge 22 in an arc shape along the circumferential direction. I'm out. The extension dimension of the elastic holding piece 23 from the side edge 22 of the support portion 21 is the same for all the elastic holding pieces 23. The width dimension of the elastic holding piece 23 (the dimension in the direction parallel to the axis of the filler pipe P) is the same for all the elastic holding pieces 23. A guide portion 24 is formed at the extending end portion of each elastic holding piece 23 so as to be bent outward in the radial direction so as to be away from the outer peripheral surface of the filler pipe P.

  The plate-like functional unit 25 is disposed so as to be sandwiched between the elastic holding pieces 23 spaced in the axial direction. The pair of plate-like functional portions 25 extends in a cantilever shape in an arc shape from the left and right side edges 22 of the support portion 21 along the circumferential direction. The extension dimension of the plate-like functional part 25 from the side edge 22 of the support part 21 is the same in both the plate-like functional parts 25. In addition, the width of the plate-like functional unit 25 (the size in the direction parallel to the axis of the filler pipe P) is the same for both plate-like functional units 25. The extension dimension in the circumferential direction of the plate-like functional part 25 from the side edge 22 of the support part 21 is set smaller than the extension dimension of the elastic holding piece 23. In a state in which the exterior member 20 is attached to the filler pipe P, the plate-like functional unit 25 exhibits a function as an insulator (heat insulating means) and a function as a protector.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the first and second embodiments, the elastic holding piece is extended from both side edges of the support portion. However, the elastic holding piece may be extended from only one side edge of the support portion. Good.
(2) In the first and second embodiments, the extension dimension of the elastic holding piece from the support part is the same for all the elastic holding pieces, but the extension dimension of the elastic holding piece from the support part is not uniform. It may be.
(3) In Examples 1 and 2, the width of the elastic holding piece (the dimension in the direction parallel to the axis of the filler pipe) is all the same, but the width of the elastic holding piece is not uniform. Good.
(4) In the first embodiment, the plurality of elastic holding pieces are arranged in parallel at a constant pitch in the axial direction, but the parallel pitch of the plurality of elastic holding pieces in the axial direction may be non-uniform.
(5) In the first and second embodiments, the elastic holding piece extending from one side edge of the support portion and the elastic holding piece extending from the other side edge are symmetric with respect to a virtual symmetry axis parallel to the axial direction. The elastic holding piece extending from one side edge of the support portion and the elastic holding piece extending from the other side edge are arranged in the circumferential direction, the axial width, and the axial arrangement. It may be asymmetrical with respect to the like.
(6) In Examples 1 and 2, the extended end of the elastic holding piece is locked in the circumferential direction and the axial direction with respect to a stopper provided on the outer peripheral surface of the filler pipe (attachment target). However, the elastic holding piece may be locked only in the circumferential direction with respect to the stopper, or may be locked only in the axial direction.
(7) In the first and second embodiments, the exterior member is positioned with respect to the filler pipe (attachment object) by locking the elastic holding piece to the stopper, but the exterior member locks the support portion with the stopper. You may position by.

(8) In Examples 1 and 2 described above, the guiding portion in the form bent outward is formed on the extended end of the elastic holding piece so as to be separated from the outer peripheral surface of the filler pipe (attachment target). It is good also as a form which does not form such a guidance part.
(9) In Examples 1 and 2, the attachment object is a cylindrical filler pipe. However, in the present invention, the attachment object is not limited to the filler pipe, and other cylindrical members and shafts (solid) It is also applicable to the case of the member.
(10) In Examples 1 and 2, the exterior member exhibits the function as an insulator or a protector, but the present invention can also be applied to an exterior member having a function other than the insulator and the protector.
(11) In Example 1 described above, the number of elastic holding pieces is 16 (eight pairs), but the number of elastic holding pieces may be 15 or less, or 17 or more.
(12) In the first and second embodiments, the number of the elastic holding pieces extending from the right side edge of the support portion and the number of the elastic holding pieces extending from the left side edge are the same number. The number of elastic holding pieces extending from the right side edge and the number of elastic holding pieces extending from the left side edge may be different.

P ... Filler pipe (attachment object)
DESCRIPTION OF SYMBOLS S ... Stopper 10 ... Exterior member 11 ... Support part 12 ... Side edge of support part 13 ... Elastic holding piece 14 ... Guide part 15 ... Slit 20 ... Exterior member 21 ... Support part 22 ... Side edge of support part 23 ... Elastic holding piece

Claims (5)

It is an exterior member that is attached so as to cover the outer peripheral surface of a tubular or rod-like attachment object,
A support portion that is in a form extending substantially parallel to the axial direction of the attachment object, and capable of elastic deformation to approach and separate from the outer peripheral surface of the attachment object;
It is a form that extends in a cantilever manner along the circumferential direction so as to surround the attachment object from the side edge of the support part, and is arranged at an interval in the axial direction of the attachment object, independent of each other. An exterior member comprising a plurality of elastic holding pieces capable of elastic deformation so as to expand in diameter.   The exterior member according to claim 1, wherein the plurality of elastic locking pieces are formed so as to extend in opposite directions from both side edges of the support member.   The exterior member according to claim 1 or 2, wherein the plurality of elastic holding pieces are arranged in parallel in the axial direction so as to be adjacent to each other through a slit.   The extension end of the elastic holding piece can be locked in a circumferential direction or an axial direction with respect to a stopper provided on an outer peripheral surface of the attachment object. The exterior member of any one of Claims.   5. The guide part of the form bent outward is formed in the extension end part of the said elastic holding piece so that it may space apart from the outer peripheral surface of the said attachment target object, The Claim 1 thru | or 4 characterized by the above-mentioned. The exterior member of any one of Claims.

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