JP2007192279A - Protector-equipped cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the other member arranged adjacently to a cover from a collision against a projection such as a fixture projecting from the cover, thereby avoiding the breakage of the member, and to prevent the generation of abnormal noise and the breakage of the cover even if the cover is used for covering a member of a vibration system. <P>SOLUTION: The cover includes the projection (fixture 3) projecting outwardly in such a state that the cover is attached to a member for attachment (vibration system member 2) and equipped with a protector 6 of sheet metal for surrounding the projection. The protector 6 has a bottom 8 having a through hole 7 through which the projection is extended, an annular surrounding portion 9 extending upright from the outer peripheral edge of the bottom 8 to a level higher than the projection, and a flange 11 having at its top end peripheral edge a turnback part 10 that is formed by folding back the tip of the surrounding portion 9. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cover with a protector, and more particularly, a protector provided with a protector that is disposed so as to surround a protrusion protruding outward from the cover and can prevent interference between the protrusion and another member. It relates to the cover with. The cover with a protector of the present invention can be suitably used for covering, for example, a member, a transmission, and the like disposed in an engine room of a vehicle.

  In an engine room of a vehicle such as an automobile, a vibration system member that generates vibration or transmits vibration is covered with a resin cover for the purpose of reducing vibration or noise. .

  For example, a transmission to which vibration is transmitted from an engine is covered with a resin cover. The cover is usually attached to the transmission with an attachment such as a bolt.

  However, in the engine room, in addition to various engine components, facilities such as refrigerant, fuel piping, and electrical cable wiring are densely arranged. For this reason, if a fixture such as a bolt protrudes from the cover that covers the transmission, for example, when a car collides, a pipe or cable disposed close to the cover hits the fixture, causing damage or leakage. There is a risk of becoming.

  Therefore, a technique for surrounding the fixture with a protector is known in order to prevent damage to the tube, cable, and the like due to collision with the fixture such as a bolt (see, for example, Patent Document 1).

  In this technique, as shown in FIG. 5, in a duct 81 used for wiring and piping a large number of long objects 80 such as cables and pipes in a building or the like, the side plate 82 and the bottom plate 83 are fixed. The tool 84 is surrounded by a protector 85. That is, in this protector 85, the fixture 84 inserted through the central hole 86 and accommodated in the recess 87 is surrounded by a ring-shaped and rounded peak portion 88. For this reason, the long object 80 such as a pipe or a cable disposed in the duct 81 first hits the rounded mountain-height part 88, so that the long object 80 is prevented from being damaged by directly colliding with the fixture 84. Can do.

Here, in this protector 85, the outer peripheral lower end 88a of the annular peak portion 88 extends downward to a position lower than the recessed portion 87 in a natural state (before attachment) in which no external force is applied. For this reason, in the attached state shown in FIG. 5, the concave portion 87 is fixed by the fixture 84 so that the concave portion 87 is in contact with the bottom plate 83 as the peak portion 88 bends against its elasticity. The elastic restoring force of the portion 88 acts as a pressure contact force between the side plate 82 and the bottom plate 83, so that the coupling force between both plates is enhanced.
Japanese Patent Laid-Open No. 9-60278

  However, if the above-described conventional technique using the protector 85 as described above is applied to, for example, a cover that covers a vibration system member in an automobile engine room, there are the following problems.

  That is, when the above prior art is applied to the cover for the vibration system member, the outer peripheral lower end 88a of the peak portion 88 that contacts the bottom plate 83 in the attached state contacts the cover, so the vibration system member covered with this cover Due to the transmitted vibration, the outer peripheral lower end 88a and the cover are in sliding contact with each other and a rubbing sound is generated, or the outer surface of the cover is damaged.

  The present invention has been made in view of the above circumstances, and can prevent other members disposed in the vicinity of the cover from colliding with and projecting a projection such as a fixture protruding from the cover, and Even if it is a case where it is used for covering a vibration system member, it is a technical problem to be solved to provide a cover with a protector that can prevent generation of abnormal noise and damage to the cover.

  The cover with a protector of the present invention that solves the above-mentioned problems is a cover that has a protrusion that protrudes outward in a mounted state attached to a member to be mounted, and a sheet metal protector that surrounds the protrusion. The protector includes a bottom portion having an insertion hole through which the protrusion is inserted, an annular surrounding portion that rises from an outer peripheral edge of the bottom portion and extends to a position higher than the protrusion, and is bent from the tip of the surrounding portion. And a flange portion having a folded portion at the bent peripheral edge of the tip end side.

  Here, the type of the “projection” is not particularly limited, but may damage other members by colliding with other members arranged close to each other, for example, “fixed” such as metal, which will be described later. Can be mentioned. In addition, the protrusion may be provided separately from the cover, or may protrude integrally from the cover.

  The direction in which the “hook” is bent from the front end of the surrounding portion is not particularly limited, and may be bent from the front end of the surrounding portion to the outer peripheral side or bent to the inner peripheral side. However, from the viewpoint of ease of forming when the protector is formed by press working or the like, it is preferable that the flange portion bends from the tip of the surrounding portion to the outer peripheral side.

  The folding direction of the “folded portion” is not particularly limited, and may be folded to the side where the surrounding portion extends from the bottom portion, or may be folded to the opposite side. However, from the viewpoint of ease of molding when the protector is formed by press working or the like, it is preferable that the protector is folded back to the side opposite to the side where the surrounding portion extends.

  In this cover with a protector, in a mounted state, the protrusion inserted through the insertion hole is surrounded by the surrounding portion, and a flange is provided at the tip of the surrounding portion that extends to a position higher than the protrusion. For this reason, since the other member disposed in the vicinity of the cover first hits the collar portion, it is possible to prevent the other member from being damaged by directly colliding with the projection. Further, the collar portion has a folded portion on the peripheral edge on the front end side, and no edge is formed on the peripheral edge on the front end side where other members easily collide. For this reason, the other member which contact | abutted the collar part is not damaged by edge contact.

  Moreover, in this cover with a protector, the collar part does not contact | abut the outer surface of a cover in the said attachment state. For this reason, even when this cover is used to cover the vibration system member, the buttock and the cover are not slidably contacted by the vibration transmitted from the vibration system member. Damage can be prevented.

  Furthermore, in this protector, since the tip of the collar portion is folded back, the gap between the collar portion and the cover portion is reduced accordingly. For this reason, it can prevent that other members, such as a pipe and a tube, get into between a collar part and a cover, and are damaged.

  In addition, since the protector is made of sheet metal, it can be easily formed by press working, and a protector having a desired shape can be easily manufactured by utilizing welding as necessary. In addition, it is easy to reduce the thickness of the sheet metal protector as compared with, for example, a cast protector. For this reason, inconvenience due to an increase in the volume and weight of the protector, for example, generation of abnormal noise due to vibration transmitted from the cover to the protector (described later) can be eliminated.

  In a preferred aspect, the cover with a protector according to the present invention has a protruding wall that is disposed on at least a part in the circumferential direction on the outer peripheral side of the surrounding portion and protrudes toward the flange portion.

  In this cover with a protector, the protruding wall protrudes from the cover toward the flange on the outer peripheral side of the surrounding portion. For this reason, it can prevent with a protruding wall that other members, such as a pipe and a tube, enter between a collar part and a cover, and can prevent damage to other members, such as a pipe and a tube more effectively. .

  The suitable aspect of the cover with a protector of this invention WHEREIN: The said protrusion is a fixing tool for attaching the said cover to the said to-be-attached member.

  Here, the “fixing tool” includes bolts, screws, rivets, screws, and the like.

  With this cover with protector, the protector for attaching the cover to the member to be attached can be prevented from directly colliding with other adjacent members by the protector, and the other member is damaged by the collision with the fastener. Can be prevented.

  In a preferred aspect of the cover with a protector according to the present invention, the protector includes a cylindrical portion that rises from the bottom portion to the opposite side of the surrounding portion and communicates with the insertion hole inside, and a proximal end side of the fixture is in the cylindrical portion. Is inserted.

  Here, the “base end side of the fixture” is, for example, the base end side (base side) of a shaft portion such as a bolt or a male screw.

  In this cover with a protector, the base end side of the fixture can be stored in the cylindrical portion. For this reason, for example, if the base end side of the fixture is press-fitted into the cylindrical portion or screwed, the coupling force by the fixture can be increased.

  In a preferred embodiment, the cover with a protector according to the present invention includes an elastic member interposed between the protector and the cover.

  In this cover with a protector, the vibration transmitted from the cover to the protector can be damped by the elastic member interposed between the protector and the cover. For this reason, even when this cover is used to cover the vibration system member, it is possible to more effectively prevent the occurrence of the abnormal noise and the damage to the cover due to the vibration transmitted from the vibration system member. it can.

  In a preferred aspect of the cover with a protector according to the present invention, the cover has a through hole that allows insertion of the cylindrical portion and has an inner diameter larger than an outer diameter of the cylindrical portion, and the elastic member includes the through hole. An annular rubber grommet sandwiched between the inner peripheral edge of the cover to be defined and the cylindrical portion.

  In this cover with a protector, an annular rubber grommet is sandwiched between the inner peripheral edge of the cover that defines the through-hole and the protector tube, so the tightening allowance (press fit allowance) for this rubber grommet is adequate. By setting, it is possible to increase the holding stability of the protector with respect to the cover, and it is possible to increase the attenuation of vibration transmitted from the cover to the protector. Therefore, even when this cover is used to cover the vibration system member, it is possible to more effectively prevent the generation of the abnormal noise and the cover damage due to the vibration transmitted from the vibration system member. .

  In a preferred aspect of the cover with a protector of the present invention, the attached member is a vibration system member.

  Thus, if the cover with a protector of the present invention is used to cover the vibration system member, the cover effectively suppresses the vibration transmitted from the vibration system member to the outside and the noise leaking from the vibration system member to the outside. it can. In addition, no abnormal noise is generated or the outer surface of the cover is not damaged by the vibration transmitted from the vibration system member to the cover protection.

  Therefore, according to the cover with a protector of the present invention, the other member arranged in the vicinity of the cover collides with a protrusion such as a fixture protruding from the cover and is damaged by the flange of the protector or the like. It can be effectively prevented. Moreover, even when this cover with a protector is used for covering a vibration system member, it is possible to prevent the generation of abnormal noise and the damage to the cover.

  Therefore, the cover with a protector of the present invention is applied to cover a vibration system member in which other members such as a pipe and a cable are arranged close to each other, for example, a transmission and an engine body arranged in an engine room of a vehicle. Thus, the effects of the present invention can be effectively utilized.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  The cover 1 with a protector of this embodiment shown in FIGS. 1 to 4 is used to cover a transmission as a vibration system member (attached member) 2 disposed in an engine room of an automobile.

  The cover 1 with the protector is made of resin molded into a predetermined shape by injection molding, and a fixture (bolt) 3 for attaching the cover 1 to the vibration system member 2 is removed from the general surface 4 of the cover 1. It protrudes toward. The cover 1 has a through hole 5 at a predetermined position, and includes a protector 6 that is attached to the through hole 5 and surrounds the fixture 3. In the present embodiment, the fixture 3 constitutes a protrusion that protrudes outward from the cover 1 when the cover 1 is attached to the vibration system member 2.

  The protector 6 is made of sheet metal and rises from the bottom 8 having the insertion hole 7 through which the fixture 3 is inserted and the outer periphery of the surface of the bottom 8 (upper surface in FIGS. 1 and 3) and is higher than the fixture 3. An annular surrounding portion 9 extending to a position, a flange portion 11 having a turn-back portion 10 on the outer peripheral edge on the distal end side bent from the distal end of the surrounding portion 9 to the outer peripheral side, and the back surface of the bottom portion 8 (FIGS. 1 and 3) And a cylindrical portion 12 that rises from the inner peripheral edge of the lower surface of the inner surface to the opposite side of the surrounding portion 9 and extends to the back surface side by a predetermined amount.

  Here, the boundary portion 17 between the surrounding portion 9 and the flange portion 11 and the folded portion 10 formed on the outer peripheral edge of the flange portion 11 are R portions having a predetermined curved surface (R surface). The folded portion 10 is folded back to the side opposite to the side where the surrounding portion 9 extends from the bottom portion 8 (the lower side of FIGS. 1 and 3 and the cover 1 side). And the collar part 11 is made into the folding | returning overlapping part on which the folded-up front-end | tip was piled up. The upper surface of the flange 11 is an annular flat surface 11a having a predetermined radial width.

  In this protector 6, a bottom portion 8 having an insertion hole 7, a surrounding portion 9 rising from the bottom portion 8, and a flange portion 11 bent from the front end of the surrounding portion 9 and having a folded portion 10 on the outer peripheral edge on the front end side. An integrated product is formed from a metal disk into a predetermined shape by pressing, and then a cylindrical portion 12 made of a metal tube having a predetermined length is joined to a predetermined position by welding.

  The cover 1 with a protector includes an annular rubber grommet 13 as an elastic member interposed between the protector 6 and the cover 1. The rubber grommet 13 is formed into a predetermined shape by vulcanization molding of a rubber elastic material. The rubber grommet 13 has a center hole 14 having an inner diameter slightly smaller than the outer diameter of the cylindrical portion 12, and an annular locking groove 15 that can be locked with the inner peripheral edge that defines the through hole 5 of the cover 1. It has on the outer peripheral surface. The outer diameter of the rubber grommet 13 at the bottom surface of the locking groove 15 is slightly larger than the inner diameter of the inner peripheral edge that defines the through hole 5 of the cover 1. With this configuration, the rubber grommet 13 is attached in a state where the rubber grommet 13 is sandwiched between the inner peripheral edge of the cover 1 that defines the through hole 5 and the cylindrical portion 12.

  Further, the rubber grommet 13 has an axial length longer than the axial length of the cylindrical portion 12, and as shown in the attached state of FIG. 1, one end (the upper end in FIG. 1) of the rubber grommet 13 is the bottom portion 8. 1 and the other end of the rubber grommet 13 (the lower end in FIG. 1) is in contact with the vibration system member 2 and is pressed between the bottom portion 8 and the vibration system member 2 in the axial direction.

  Further, the protector-equipped cover 1 has a plurality of (six in this embodiment) protruding walls 16 disposed on the outer peripheral side of the surrounding portion 9. The protruding walls 16 are disposed at equal intervals in the circumferential direction at positions that are offset from the surrounding portion 9 to the outer peripheral side by a predetermined amount and substantially correspond to the folded portion 10 of the flange portion 11 of the protector 6 (FIG. 4). reference).

  In the cover 1 with the protector of the present embodiment having the above-described configuration, the rubber grommet 13 is press-fitted while the locking groove 15 is locked to the inner peripheral edge defining the through hole 5 of the cover 1, and then the center of the rubber grommet 13 is The cylindrical portion 12 of the protector 6 is press-fitted into the hole 14 to be assembled.

  The protector-equipped cover 1 according to this embodiment assembled in this manner is attached to the vibration system member 2 by the fixture 3 in a state of being disposed at a predetermined position with respect to the vibration system member 2 (see FIG. 1).

  In the attached state shown in FIG. 1, a shaft portion 3 b such as a bolt constituting the fixture 3 is inserted through the insertion hole 7 and the cylindrical portion 12 of the protector 6 and screwed into the vibration system member 2. The head 3 a such as a bolt constituting the fixture 3 fastens the bottom 8 of the protector 6. And in this attachment state, the head 3a of the fixture 3 is surrounded by the surrounding part 9 extended to a position higher than this. Further, the base end side of the fixture 3 (the base portion on the base end side of the shaft portion 3b such as a bolt constituting the fixture 3) is inserted into the cylindrical portion 12, and the tip end portion of the fixture 3 (the fixture 3 is fixed). A tip end portion of a shaft portion 3b such as a constituting bolt is screwed into the vibration system member 2.

  In this attached state, for example, when an automobile collides, a tube, a tube, or the like disposed in the vicinity of the protector-equipped cover 1 is a flange 11 provided at the tip of the enclosure 9 that extends to a position higher than the fixture 3. First hit. For this reason, it can prevent that a pipe | tube, a tube, etc. are damaged by colliding with the fixing tool 3 directly.

  Moreover, the collar part 11 has the folding | returning part 10 in the outer periphery of the front end side, and the edge is not formed in the outer periphery of the front end side where a tube, a tube, etc. are easy to collide. In this embodiment, the folded portion 10 is folded back to the cover 1 side, and the folded tip is stored on the cover 1 side. For this reason, the tip having an edge is not exposed to the outer side of the cover 1. Therefore, the tube, tube, or the like that has hit the collar 11 is not damaged by the edge. Further, if the tube, the tube, or the like collides with the flat surface 11a of the flange portion 11, the contact area at the time of the collision becomes large, so that the damage to the tube, the tube, etc. can also be suppressed.

  Further, in the cover 1 with the protector, the flange portion 11 is not in contact with the outer surface of the cover 1 in the attached state. For this reason, during normal operation, the flange portion 11 and the cover 1 are not slidably contacted by the vibration transmitted from the vibration system member 2, so that the generation of abnormal noise and the damage of the cover 1 can be prevented.

  In addition, in this protector 6, since the tip of the flange portion 11 is folded back, the gap between the flange portion 11 and the cover portion 1 is reduced accordingly. In this embodiment, a plurality of protruding walls 16 protrude from the cover 1 toward the flange 11 on the outer peripheral side of the surrounding portion 9, and a tube, a tube, or the like enters between the flange 11 and the cover 1. This can be prevented by the protruding wall 16. Therefore, it is possible to effectively prevent a tube, a tube, or the like from entering between the flange portion 11 and the cover 1 and being damaged.

  Further, since the protector 6 is made of sheet metal, it can be easily manufactured by using press working and welding. Then, according to the protector 6 made of sheet metal, it is easy to reduce the thickness as compared with, for example, a protector made of casting. For this reason, inconvenience due to an increase in the volume and weight of the protector, for example, generation of abnormal noise due to vibration transmitted from the cover to the protector can be eliminated.

  Here, the present inventor has confirmed that abnormal noise is generated during traveling in an automobile in which a cover having a caster protector attached thereto is attached to the vibration system member 2. This abnormal noise is considered to be due to the fact that the cast protector is thick and has a large volume and weight. On the other hand, in the automobile in which the cover 1 with the protector made of sheet metal according to the present embodiment is attached to the transmission as the vibration system member 2, there was no generation of abnormal noise that occurred in the case of the protector made of casting.

  Furthermore, in this cover with a protector, a rubber grommet 13 is externally attached to the cylindrical portion 12 of the protector 6 in a press-fitted state, and the rubber grommet 13 is attached to the cover 1 in a press-fitted state, and the rubber grommet 13 is clamped in the radial direction. . The rubber grommet is also sandwiched between the bottom of the protector 6 and the vibration system member 2 in the axial direction. For this reason, the cover 1, the vibration system member 2, and the protector 6 are fixed by the fixture 3 and the rubber grommet 13 in a securely tightened state, and the reliability of the coupling is improved.

  Moreover, in this cover with a protector, the vibration transmitted from the vibration system member 3 to the protector 6 through the cover 1 can be damped by elastic deformation of the rubber grommet 13 interposed between the cover 1 and the protector 6. For this reason, generation | occurrence | production of the said abnormal noise and the damage of the cover 1 resulting from the vibration transmitted from the vibration system member 2 can be prevented more effectively.

FIG. 5 is a partial cross-sectional view showing a part of the cover with a protector according to the embodiment of the present invention, cut at a portion corresponding to AA in FIG. 4. It is a perspective view of a cover with a protector concerning an embodiment of the present invention. It is a fragmentary sectional view which shows the state which decomposed | disassembled the cover with a protector which concerns on embodiment of this invention. It is a partial top view of a cover in the state which decomposed | disassembled the cover with a protector which concerns on embodiment of this invention. It is sectional drawing which shows the conventional protector.

Explanation of symbols

1 ... Cover with protector 2 ... Vibration system member (attached member)
DESCRIPTION OF SYMBOLS 3 ... Fixing tool (projection) 5 ... Through-hole 6 ... Protector 7 ... Insertion hole 8 ... Bottom part 9 ... Enclosure part 10 ... Folding part 11 ... Gutter part 12 ... Cylindrical part 13 ... Rubber grommet (elastic member)
15 ... Locking groove 16 ... Projecting wall

Claims (7)

A cover having a protrusion protruding outward in an attached state attached to a member to be attached, and a sheet metal protector surrounding the protrusion,
The protector includes a bottom portion having an insertion hole through which the protrusion is inserted, an annular surrounding portion that rises from an outer peripheral edge of the bottom portion and extends to a position higher than the protrusion, and is bent from the tip of the surrounding portion. A cover with a protector, comprising: a bent portion having a folded portion at a peripheral edge on a bent front end side.   The cover with a protector according to claim 1, further comprising a projecting wall disposed on at least a part of a circumferential direction on the outer peripheral side of the surrounding portion and projecting toward the flange portion.   The cover with a protector according to claim 1 or 2, wherein the protrusion is a fixture for attaching the cover to the member to be attached.   The protector includes a cylindrical portion that rises from the bottom portion to the opposite side of the surrounding portion and communicates with the insertion hole inside, and a proximal end side of the fixture is inserted into the cylindrical portion. 3. Cover with protector according to 3.   The cover with a protector according to claim 1, further comprising an elastic member interposed between the protector and the cover. The cover has a through hole that allows the insertion of the cylindrical portion and has an inner diameter larger than the outer diameter of the cylindrical portion;
The cover with a protector according to claim 5, wherein the elastic member is an annular rubber grommet sandwiched between an inner peripheral edge of the cover that defines the through hole and the cylindrical portion.   The cover with a protector according to claim 1, wherein the attached member is a vibration system member.

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