JP4640202B2 - Harness protector - Google Patents

Description

  The present invention relates to a harness protector attached to a device such as an engine.

For example, a power supply harness is connected to an injector of an automobile. The harness is usually housed in an elongated cylindrical protector for protection. As such a thing, what was disclosed by the following patent document 1 is known, for example.
JP 2003-230222 A

  The protector is fixed to the injector case. Although the protector itself is made of a synthetic resin for weight reduction, the fixing to the injector side may be screwed using a metal fixture. The fixture has a long main body portion mounted along the length direction with respect to the bottom surface of the protector. And the screwing part was extended and formed in the width direction outward from the several places of this main-body part with the height difference, and the screwing to the injector side was performed through them. As described above, since the screwing portion is set at a position eccentric from the main body portion, when the vibration of the engine is transmitted to the protector, torque with the screwing portion as a fulcrum acts on the protector. There is a possibility that the stop portion bends and deforms from the main body.

  This invention is completed based on the above situations, Comprising: It aims at providing the harness protector which can obtain the stable mounting | wearing state.

As a means for achieving the above object, the invention of claim 1 is directed to a long protector body capable of accommodating a harness therein, and a fixture attached along the length direction on the bottom surface of the protector body. The protector body has a plurality of attachment portions for fixing the protector body to a mounting wall surface, each spaced apart in the length direction of the protector body and each having a width. while that is provided so as to project outward, wherein the fixture includes a base portion that is disposed along the bottom surface of the protector body, the width direction outer at positions corresponding to the respective mounting portions in the side edge of the base portion A plurality of projecting portions that protrude in the direction toward the mounting surface, and the projecting portions are bolted to the mounting wall surface on the bottom surface of the mounting portion. From the side edge of the overhanging portion, an upright piece stands up so that it can be bent, and is latched with a locking projection formed on the side wall of the mounting portion, whereby the overhanging portion is bent and deformed with respect to the base portion. It is the structure which is controlled.

According to a second aspect of the present invention, in the protector main body according to the first aspect of the present invention, a branch port is formed on the side surface opposite to the direction in which each of the mounting portions projects, and the branch port is formed from the branch port. An electric wire branched from the harness is drawn out, and a connector for connection with an external device is attached to the tip of the branched electric wire .

According to a third aspect of the present invention, in the first or second aspect of the present invention, the protector body has a case formed of a synthetic resin material in a cross-sectional channel shape, and the upper surface side of the case is the harness. The fixture is formed of a metal plate, and a cover is attached to the case so as to close the upper surface opening. And

<Invention of Claim 1>
In the invention of claim 1, the harness protector as a whole is fixed by fixing the overhanging portion to the mounting wall surface via a bolt . Since the projecting portion projects from the fixture in the width direction, when an external force such as vibration is transmitted, the projecting portion may be bent from the base due to the influence. However, according to the first aspect of the present invention, since the stand-up piece is formed on the overhanging portion so as to be locked to the locking projection of the mounting portion, the situation in which the overhanging portion is bent and deformed from the base is restricted. As a result, the fixing state of the harness protector can be stabilized.

<Invention of Claim 2 >
In the invention of claim 2 , when the electric wire drawn from the protector body is connected to an external device, the pulling force of the electric wire acts on the protector body, and as a result, the protector main body is on the drawing side of the electric wire, that is, each attachment portion. Try to fall to the opposite side of the overhang direction. Since the operation acts to lock the locking projection of the mounting portion to the standing piece of the fixing tool, the bending deformation of the fixing tool becomes more effective.

<Invention of Claim 3 >
According to the invention of claim 3 , the case of the protector body is formed in a channel shape that opens upward, and the fixing device is fixed to the lower surface side of the bottom wall, that is, the side where the case is closed, that is, the side where opening deformation is unlikely to occur. Therefore, the locking state of the bending restricting portion with respect to the protector body can be stabilized.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The harness protector HP of the present embodiment is configured by assembling a metal fixture 2 to a synthetic resin protector main body 1 in an elongated form capable of accommodating the harness H, and the harness protector HP is entirely connected to the device side by the fixture 2. (For example, it is fixable to the vehicle engine E (diesel engine)). Further, on one side of the protector main body 1 (the side where a second branch port 10 described later is arranged: the side where an injector (not shown) is arranged), as shown in FIG. A cam shaft 40 is rotatably arranged substantially in parallel, and cams 41 are fitted to the cam shaft 40 at regular intervals.

  The protector body 1 is composed of a case 3 and a cover 4 that closes the upper surface opening of the case 3. The case 3 is formed in a substantially U-shaped cross section that opens upward, and can accommodate a harness H inside. A chamber 5 is formed.

  While the case 3 has a constant width, a plurality of (three places in the drawing) bent portions are set for each predetermined length interval. Each bent portion is an escape recess 42 that is recessed in a substantially V shape in a direction away from the camshaft 40. These escape recesses 42 play a role of preventing projection from the protector body 1 as much as possible by enabling connection with an injector (not shown) in a state in which a later-described injector connector 17 is partially inserted.

  The case 3 has an inlet 6 for the harness H opened at one end in the longitudinal direction, and one end of the harness H housed in the housing chamber 5 is drawn out of the case 3 through the inlet 6 and is connected to the power supply connector. 7 is installed. Furthermore, the branch ports 8 and 10 are opened on each side of the case 3 at four locations on one side at appropriate intervals in the length direction on both side surfaces facing the longitudinal direction. Each of these is formed by cutting out both side surfaces of the case 3 from the opening edge of the upper end at a substantially middle portion along the height direction, from which the electric wires branched from the harness H can be drawn out. Yes.

  Further, the opening edge of one of the branch ports 8 and 10 provided on one side surface of the case 3 (the side on which mounting portions 12A and 12B described later are disposed) (hereinafter referred to as the first branch port 8) A first drawer wall 9 is formed so as to surround the first branch port 8. The first lead-out wall 9 protrudes obliquely outward so that the branch wire can be drawn out obliquely with respect to the longitudinal axis of the case 3. However, one side wall of the first drawer wall 9 is formed over almost the entire height of the case 3, and the tip end portion thereof is a protruding wall 9 </ b> A bent so as to be substantially orthogonal to the longitudinal axis of the case 3. Yes.

  Further, on the wall surface of the case 3 on the side where the first branch port 8 is disposed, three joint portions 31 and the second branch port 10 are disposed at a substantially intermediate position between the adjacent first branch ports 8. Four joint portions are also arranged adjacent to each protective wall 11 on the wall surface on the other side. The basic structure is the same for any joint part 31. That is, each joint part 31 has an inner and outer double wall structure, is formed in a hollow shape over almost the entire height range of the case 3 and is open in the vertical direction. Furthermore, as shown in FIG. 6, a latching projection 32 projects from the height of the center of the outer wall surface of the case 3 in each joint portion 31.

  Further, the side surface on the opposite side of the case 3, that is, the branch port on the side where the camshaft 40 is disposed (hereinafter referred to as the second branch port 10) is positioned to face each cam 41 of the camshaft 40. Further, a protective wall 11 is provided at the opening edge of each second branch port 10 so as to surround the opening edge. Each protective wall 11 extends substantially in parallel so that the outer wall faces the peripheral surface of the cam 41 and is along the outer surface of the case 3. As a result, the branch wires from the harness H can avoid interference with the cam 41 and are routed along the outer surface of the case 3.

  It should be noted that connectors 16 and 17 for glow plugs or injectors are attached to the ends of the branch wires led out from the first and second branch ports 8 and 10, respectively.

  The case 3 is provided with three attachment portions 12A and 12B for fixing the harness protector HP. In this embodiment, two locations near the first branch port 8 in the case 3 (hereinafter, these two mounting portions are referred to as side mounting portions 12A), and the end of the case 3 opposite to the introduction port 6 is provided. One part (hereinafter, this attaching part is referred to as an end attaching part 12B) is arranged in each part. Each of the attachment portions 12 </ b> A and 12 </ b> B is formed such that the height position of the lower surface is lower than the lower surface of the case 3.

  Both side attachment portions 12A are formed in a substantially rectangular tube shape, and a receiving hole 13 is opened on the entire bottom surface thereof so that a bolt (or nut) can be inserted into the inside from here. On the other hand, a work hole 14 having a small diameter is coaxially opened on the upper surface side. Further, the end attaching portion 12B is formed in a substantially cylindrical shape, and a bolt or a nut can be inserted from the lower surface side to the inside similarly to the both side attaching portions 12A.

  On the other hand, a metal fixture 2 is attached to the bottom surface of the bottom wall of the case 3 over its entire length. A recess 15 formed one step lower than the peripheral edge is formed in the lower surface of the bottom wall of the case 3, and the base 2 </ b> A of the fixture 2 is fitted into the recess 15. Further, a reinforcing rib 18 is formed at the center of the outer surface of the base portion 2A so as to protrude substantially over the entire length and toward the outside. Furthermore, overhanging portions 19A and 19B are formed corresponding to the mounting portions 12A and 12B at two positions in the length direction of one side edge in the width direction and the end portion of the base portion 2A, and are attached to the base portion 2A. It continues through the steps corresponding to the portions 12A and 12B. The lower surface of the bottom wall of each of the attachment portions 12A and 12B has a concave portion similar to the above, and the overhang portions 19A and 19B can be fitted in alignment with the corresponding concave portion. Further, through holes 30 through which bolt shafts can be inserted pass through the centers of the overhanging portions 19A and 19B. Of these, those near the introduction port 6 and those corresponding to the end attaching portion 12B are oblong holes. This makes it possible to absorb variations in assembly.

  In addition, when the harness protector HP is attached to the engine E, the base 2A is in a position floating from the upper surface of the engine E.

  Furthermore, among the overhanging portions 19A, the one corresponding to the side portion attaching portion 12A is formed such that a standing piece 20 is bent at one side edge so as to be bent at a substantially right angle and bendable at the center portion thereof. Is open. On the other hand, a locking projection 22 is formed on the outer wall surface facing the upright piece 20 in both side mounting portions 12A, and the locking window 21 and the locking projection 22 are elastic as the fixture 2 is attached to the case 3. Engaging. More specifically, as shown in FIG. 7, the locking projection 22 is formed so that the upper edge thereof is substantially horizontal, and the portion forming the horizontal plane and the upper edge of the opening of the locking window 21 are locked. It has become. Thus, by engaging the upright piece 20 and the side attachment portion 12A, it is possible to alleviate the situation where the overhanging portion 19A is bent downward with respect to the base portion 2A side.

  Further, on both side edges in the longitudinal direction of the base portion 2A, there are a plurality of latch portions 23 for attaching the fixture 2 (in this embodiment, a total of seven locations are arranged corresponding to each joint portion), Each is arranged at appropriate intervals. Each latching portion 23 is formed to be bent at a substantially right angle from the base portion 2A with substantially the same width as the corresponding inner width of each joint portion 31, and can be inserted through the joint portion 31 while being guided from the lower opening. is there. Further, as shown in FIG. 6, each latching portion 32 has a window hole 24 formed in a rectangular shape on the upper side, and can be latched with the latching projection 32 in the joint portion 31. It can be done. A cantilever-like locking claw 25 is formed obliquely downward on the lower side of the window hole 24 and can be bent. This locking claw 25 can be locked with each mounting piece 26 provided on the cover 4 side described below.

  On the other hand, the cover 4 is formed so as to match the shape of the upper surface opening of the case 3, and the upper surface of the case 3 can be closed over the entire length. On the outer surface of the cover 4, a reinforcing recess 27 is divided into a plurality along the length direction. On one side edge of the cover 4, a flange piece 28 is formed so as to cover the vicinity of the outlet of each second branch port 10. In the cover 4, the mounting pieces 26 are continuously formed downward at a total of seven positions on both side edges in the longitudinal direction and corresponding to the joint portions 31. Each mounting piece 26 is formed so as to be able to be inserted while being guided into the joint portion 31, and the center thereof is formed in a frame shape by the penetration hole 29 passing therethrough. The locking claw 25 of the fixture 2 can be fitted into the punched hole 29, and the locking claw 25 can be elastically locked to the lower edge of the punched hole 29. When the mounting piece 26 is inserted into the joint portion 31, it slides into contact with the outer surface of the latching portion 23 on the fixture 2 side and enters the bending space of the latching portion 23, so that the deflection of the latching portion 23 is restricted. Thus, the locked state between the window hole 24 and the latching protrusion 32 is made difficult to come off.

  Next, the operation and effect of the present embodiment configured as described above will be described in detail. First, the power supply connector 7 and the glow plug and injector connectors 16 and 17 are connected with the cover 4 removed. The harness H is accommodated from the upper surface side of the case 3, and each is pulled out from the introduction port 6 of the case 3, and each branch line is pulled out from the first and second branch ports 8 and 10. Thereafter, each latching portion 23 is inserted into the joint portion 31 from below while the fixture 2 is placed along the lower surface of the bottom wall of the case 3. At this time, the latching portion 23 bends and deforms when it climbs over the latching projection 11, and after it climbs over, it elastically recovers and locks into the window hole 24.

  At the same time as described above, the projecting portions 19A and 19B fit into the lower surface recesses of the corresponding mounting portions 12A and 12B, and the standing pieces 20 are in sliding contact with the side surfaces of the both side mounting portions 12A. The upper edge of the locking projection 22 is locked to the opening edge of the locking window 24 by being elastically restored as it rides over the board 22 and getting elastically restored.

  In addition, in each attachment part 12A, 12B, a bolt or a nut is accommodated prior to the attachment of the fixture 2, and after the attachment of the fixture 2, the harness protector HP is attached to the engine E side by the bolt and nut. The At this time, the case 3 side is supported in a state where a part of the case 3 is lifted from the engine E.

  After the fixing device 2 is mounted, the cover 4 is mounted to close the upper surface opening of the case 3. At this time, when each mounting piece 26 is inserted from the upper opening of the joint portion 31, the mounting piece 26 becomes the latching portion. In the bending space of the latching portion 23 held between the inner wall 23 and the inner surface of the outer wall of the joint portion 31, the latching claw 25 is bent while proceeding. When the lower edge of the punching hole 29 of the mounting piece 26 passes the tip of the locking claw 25, the locking claw 25 is elastically restored and locked to the lower edge of the punching hole 29. Thus, the cover 4 is attached to the case 3 in a state where it is prevented from coming off. In addition, since the attachment piece 26 enters the bending space of the latching portion 23, the deformation of the latching portion 23 in the direction in which the latching portion 23 is released from the latching projection 32 is restricted. The locking state of the part 23 and the latching protrusion 32 is maintained, and the mounting state of the fixture 2 to the case 3 is strengthened.

  Further, in the harness protector HP of the present embodiment, since the attachment portions 12A and 12B are arranged to protrude to the side of the case 3, the overhang portions 19A and 19B of the fixture 2 are also offset in the width direction from the base portion 2A. I have a heart. Therefore, when the vibration of the engine is transmitted to the case 3 side through the bolt, there is a possibility that the base portion 2A side is bent and deformed at the boundary portion between the overhanging portion 19A and the base portion 2A side. However, in this embodiment, since the standing piece 20 is formed and locked to the attachment portion 12A on the protector side, the swing on the base portion 2A side is restricted, so that the deformation of the fixture 2 can be eliminated. .

  Further, the connector 17 for an injector drawn out from the second branch port 10 is positioned so that a part thereof is accommodated in the corresponding escape recess 42, and is connected to an injector (not shown) here. As described above, the connector 17 is arranged in a state where the connector 17 is escaped and partially bites into the recess 42, so that the amount of protrusion from the protector body 1 can be suppressed as much as possible to avoid interference with the cam 41 and the like. Therefore, this is extremely effective when the connector 17 is multi-polarized and enlarged. Further, since the bent portion of the case 3 is used to realize the escape recess 42, the case 3 itself can be formed with a uniform outer shape, and it is not necessary to increase the width dimension of the case 3. There is also. Furthermore, the electric wire connected to the injector connector 17 and drawn out from the second branch port 10 is routed along the outer surface of the case 3 with the side facing the cam 41 protected by the protective wall 12. Therefore, the branch wire is also protected from interference with the cam 41 and the like, and concerns such as disconnection can be eliminated.

  Furthermore, this embodiment also has the following effects. Since the case 3 has a channel cross section in which one surface in the longitudinal direction is open, a structure in which the opening in the longitudinal direction is closed using the fixture 2 is also conceivable. However, in the structure in which the fixture 2 is attached to a portion (opening) that is likely to be deformed by opening as such a case 3 side structure, there is a possibility that the deformation of the fixture 2 may be prevented from being deformed. Therefore, in this embodiment, the fixture 2 is mounted on the bottom wall surface side as the case 3 side structure, and the cover 4 is provided separately for the longitudinal opening to close it. By doing so, even if vibration is applied to the case 3 side, the case 3 itself is hardly deformed, which is effective in preventing deformation of the fixture 2.

  By the way, when the fixture 2 is locked to the case 3, a latching portion 23 is provided from the fixture 2 side so as to be hooked on the latching projection 32 in the joint portion 31 to prevent the latch 2 from coming off. Further, in the present embodiment, the attachment piece 26 is caused to enter the bending space of the latching portion 23 as the cover 4 is attached, and thereby the deflection in the direction in which the latching portion 23 is detached from the latching projection 32 is regulated. Therefore, the fixing device 2 can be reliably prevented from coming off. Furthermore, since the mounting piece 26 is used to be locked to the locking claw 25 and thereby the cover 4 is also prevented from coming off, simplification of the structure is also achieved.

That is, such a structure is summarized as follows.
(1) A long case that can accommodate a harness therein, a fixture provided along the length of the protector body, and a fixture that is provided integrally with the fixture and attached to the case 3 A latching portion that can be locked to the case while being bent and deformed toward the bending space, and is assembled to the case and enters the bending space, and the latching portion releases the locking with the case. It is a harness protector provided with the bending control means (mounting piece) which controls bending in the direction to do.

According to such a configuration, the fixing member is mounted by the latching portion being elastically locked to the case. In addition, since the bending restricting means is assembled to the case in a state of entering the bending space of the latching portion, the fixing tool is attached to the case in order to restrict the latching portion from being displaced in the direction of releasing the locking with the case. Can be securely attached.
(2) The harness described in (1) above, wherein the case has an opening on one surface in the length direction, and the bending restricting means is a mounting piece formed on a cover for closing the opening. It is a protector.

According to the structure of (2), since a bending | flexion control means can be comprised using a cover, since a member only for a bending | flexion control becomes unnecessary, a component can be reduced.
(3) The harness protector according to the above (2), wherein the cover is fixed to the case by engaging the mounting piece with the latching portion.

According to the configuration of (3), since the cover is fixed using the mounting piece that reinforces the locking condition of the fixture, simplification of the configuration can be achieved.
(4) In the device described in (2) or (3), a hollow joint portion having an inner / outer double structure is provided on the outer side surface of the case, and a latching projection portion is provided on the inner wall surface in the joint portion. While the protrusion is formed, the latching portion is bent toward the deflection space when it is inserted into the joint portion, gets over the latching projection and is locked, and the cover is attached to the case. Accordingly, the mounting piece is a harness protector that enters into the bending space held between the latching portion and the outer wall surface of the joint portion.

  According to the configuration of (4), since the bending space is a closed space held between the latching portion and the outer wall side of the joint portion, the deflection of the latching portion is reliably controlled by the entry of the mounting piece. Therefore, the locking state of the fixture is reliable.

<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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) In this embodiment, the fixture 2 is arranged on the bottom wall lower surface side of the case 3. However, if the fixture 2 has a sufficient thickness so that the opening deformation of the case 3 can be regulated, for example, 2 may close the opening in the longitudinal direction of the case 3.

  (2) In the present embodiment, the base portion 2A and the projecting portions 19A and 19B are shown to have a height difference, but they may be formed at the same height depending on use conditions.

Top view of the harness protector with the harness housed Perspective view of the protector body Right side view of the protector body Same left side view Bottom view The perspective view which shows the latching condition of a latching part and a case side AA line sectional view of FIG. BB sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Protector main body 2 ... Fixing tool 3 ... Case 4 ... Cover 12A, B ... Mounting part 19A, B ... Overhanging part 20 ... Standing piece 22 ... Locking protrusion 23 ... Latching part 26 ... Mounting piece 31 ... Joint part 32 ... Hanging projection

Claims (3)

A long protector body that can accommodate a harness inside,
A harness protector comprising a fixture attached along the length direction on the bottom surface of the protector body,
In the protector body, a plurality of attachment portions for fixing the protector body to the mounting wall surface are spaced apart in the length direction of the protector body and each protrudes outward in the width direction. While provided
The fixture includes a base portion arranged along the bottom surface of the protector body , and a plurality of projecting portions formed to protrude outward in the width direction at positions corresponding to the attachment portions at the side edges of the base portion. And the projecting portion is bolted to the mounting wall surface on the bottom surface of the mounting portion, and a standing piece is erected from the side edge of the projecting portion so as to be able to bend, and is formed on the side wall of the mounting portion. The harness protector according to claim 1, wherein the harness protector is configured to be restrained from being bent and deformed with respect to the base portion by being locked with a stop protrusion.   In the protector body, a branch port is formed on the side surface opposite to the direction in which each mounting portion projects, and an electric wire branched from the harness is drawn out from the branch port, and at the tip of the branch electric wire The harness protector according to claim 1, further comprising a connector for connecting to an external device.   The protector body has a case formed in a cross-sectional channel shape with a synthetic resin material, and the upper surface side of the case opens as a harness receiving port for receiving the harness, while the fixing tool is made of metal. 3. The harness protector according to claim 1, wherein the harness protector is formed of a plate material, and a cover is attached to the case so as to close an opening on an upper surface thereof.

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