JP4454277B2 - Wiring and piping harness mounting structure - Google Patents

Description

  The present invention is a place where wiring and piping are inserted together in a main part of a vehicle body in an industrial machine such as a construction machine, and the wiring and piping are concentrated in a narrow portion and passed through an insertion hole provided in a wall. The present invention relates to a wiring / piping harness mounting structure that enables the sealing function to be effective.

  Conventionally, in industrial machine vehicles such as automobiles, construction machines, and agricultural machines, for wire harnesses, hydraulic pipes or air pipes used to link devices such as drive units and control operation units provided in the driver's cab. In order to prevent the string-shaped soft objects such as hoses and electric signal cables from passing through the partition holes provided in the partition walls between the chambers, the string-shaped soft objects are not damaged by the elastic body. The purpose is achieved by fitting the grommet made in

  As for the grommet used for the partition hole through which such a string-like soft object is inserted, those having many structures have already been proposed and put into practical use. When this string-like soft object can be connected to a device through an insertion hole provided in the grommet, connectors such as connectors are connected to both ends of the harness having a required length in advance based on the design drawing. It is attached and passed through the insertion hole of the grommet. When performing such work, it is shaped on the workbench so as to match the state of wiring and piping, for example.

  By the way, while using this grommet to penetrate the partition hole and allowing various harnesses to pass therethrough, there is a problem in sealing the partition hole. For this reason, for example, a plurality of grommets are used to insert a large number of harnesses. Patent Document 1 or Patent Document 2 is known in which a hydraulic hose and an electrical harness are passed through the insertion holes one by one to enhance the sealing effect.

  Moreover, in a wire harness etc., when the wire harness is branched at a location close to the grommet mounting position, Patent Document 3 discloses a configuration that makes it easy to perform a water stop treatment with the grommet. .

Japanese Patent Application Laid-Open No. 2001-28881 JP 2001-176346 A JP 2002-152949 A

  However, in the prior art, for example, in the techniques described in Patent Document 1 and Patent Document 2, a plurality of hydraulic hoses and electrical harnesses can be inserted into one grommet one by one. , Both of which pass a small diameter or process one or two of a plurality of bundles, and the number of harnesses connected between devices increases due to computerization of the device and passes through the partition wall When the number of harnesses to be increased increases, such a processing means has a problem that the grommet sealing process becomes insufficient and the sealing effect cannot be enhanced. Also, if the number of grommets is increased, the number of insertion holes provided in the partition wall portion increases, and if a large number of holes are opened in a limited space, the distance between the holes is narrowed, resulting in a decrease in strength of the partition walls. There is a problem of becoming.

  Further, if a process for concentrating a large number of harnesses and inserting the partition hole is necessary, it may be impossible to bend and wire at a position away from the grommet for convenience of connection with the device. In such a case, since the harness is branched in the vicinity where the grommet insertion hole exits or enters, an irregular external force is naturally generated in the grommet insertion hole, resulting in a problem that the sealing function is deteriorated. If the harness with a grommet as disclosed in Patent Document 3 can be adopted, the problem can be solved. However, with such a configuration, when the grommet becomes large and gathers a large number, there is no room in the partition wall, so it is adopted. Can not do it.

  In addition, the number of various harnesses that penetrate the bulkhead and connect from the outside of the aircraft to the cabin, such as the operator's cabin, is increased. Wrapped around Further, in connection with the connection of devices, a configuration in which a harness is branched and crossed over to another harness occurs. When such a so-called congested wiring structure is accompanied, it becomes difficult to treat the sealing structure of the harness that penetrates the partition wall with a grommet.

  The present invention has been made to solve such a problem, and is assembled to a panel on which a plurality of grommets can be mounted so that a large number of various harnesses penetrating the partition wall correspond to the state of piping and wiring. It is an object of the present invention to provide a wiring / piping harness attachment structure in which the unit panel is unitized and attached to a large opening provided in the partition wall.

In order to achieve the above-described object, the wiring / piping harness mounting structure according to the present invention includes:
A wiring / piping harness mounting structure in which a plurality of harnesses are inserted through a partition wall that separates the outside and the interior of a work machine, and a plurality of insertion holes are provided on a single mounting panel in a required arrangement. provided by mounting each grommet with inserting the respective harness corresponding grommet into the corresponding insertion holes, a unit together multiple harnesses on one of the mounting panel, wherein this unitized mounting panels The unitized mounting panel is attached to the insertion hole by bolting the mounting hole provided in the partition so as to cover the insertion hole of the partition and the mounting hole in the mounting seat of the mounting panel , The plurality of harnesses are configured to be attached through the partition wall.

In the above invention, the harness to be mounted by the mounting panel is preferably wired in such a manner that the harness is mounted on the front side and / or the rear side of the plurality of grommets assembled to the mounting panel.

According to the present invention, a plurality of harnesses unitized assembled via a grommet in a plurality of insertion holes provided in one of the mounting panels, attaching the then the unitized mounting panels on the partition wall of the instrumentation in hole Since it is configured, the assembly work of the harness can be performed at a place different from the machine body. Therefore, it is only necessary to insert the harness through the large insertion hole provided in the bulkhead part of the fuselage after incorporating it into a state where it can be wired and piping at a different position, and fix the mounting panel to the bulkhead. They can be assembled and attached, and the harness can be assembled to the aircraft as designed, and the workability is remarkably improved. In addition, since the assembly work can be done in advance outside the vehicle body, the assembly unit can be formed without difficulty even when the outer shape of the harness is increased due to the attachment of the exterior material, improving the sealing performance at the partition including the grommet The effect of doing is obtained. In addition, the cost can be reduced.

  Further, in the second invention, since a plurality of harnesses can be unitized by penetrating and holding through the insertion holes provided in one mounting panel via grommets, the harnesses may be branched between related harnesses before being assembled to the vehicle. It becomes possible to take. In short, since a plurality of harnesses can be assembled to the mounting panel at different positions, three-dimensional wiring can be performed, and workability can be improved and wiring can be rationalized.

  Next, a specific embodiment of the wiring / piping harness mounting structure according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of a wiring / piping harness mounting structure according to the present invention. FIG. 2 is a front view of an embodiment of the mounting panel (a) and a sectional view (b) in which the harness is inserted into the AA cross section, and FIG. 3 shows a grommet for mounting the harness. An attachment sectional view is shown in FIG. 4 and a schematic diagram showing the arrangement of the harness of this embodiment is shown.

  The structure of the harness mounting portion of the present embodiment is a harness 5 (hereinafter, all shown below) such as an electrical harness for control and hydraulic piping (hose) from the vehicle body side (external) to the interior of the cab in a construction machine such as a bulldozer (not shown). Are used in a portion where a large number of the insertion holes 10 are introduced, and a plurality of insertion holes 14 are provided in one mounting panel 10, and the harness 5 is connected to each of the insertion holes 14 via a grommet 15. Has a unit structure.

  The mounting panel 10 closes the insertion hole 2 provided in a size corresponding to the minimum necessary to introduce a required amount of harness into a part of the partition wall where the harness is introduced from the outside into the cab. It is made of a plate material with dimensions that can be cut off. The mounting panel 10 of one embodiment is shown in FIG.

  In the mounting panel 10 of this embodiment, a sealing material is attached to the peripheral portion 11 attached to the partition wall 1 so as to improve the sealing performance. And in the surrounding part 11 which became thick, the attachment seat 13 provided with the attachment hole 13a in the required location is cut and provided. A plurality of insertion holes 14 are disposed in the central portion 12. The thickness of the plate material in the central portion 12 where the insertion hole 14 is formed is set to a thickness convenient for fitting the mounting groove 15b formed in the outer peripheral portion of the grommet 15.

  For example, as shown in FIG. 3, a required harness 5 is inserted into a plurality of insertion holes 14 provided in the mounting panel 10 so as to be mounted. The grommet 15 is formed of an elastic material (for example, soft plastic, rubber, or the like) that can be engaged with and fixed to the insertion hole 14 of the mounting panel 10 serving as a partition wall in a groove portion described later. The grommet 15 is formed with a groove portion 15b fitted on the outer periphery of the base portion 15a so as to cover the edge of the insertion hole 14 of the mounting panel 10, and is appropriately separated from the base portion 15a including the groove portion 15b in the direction of the passing axis of the harness 5. An opening 15c having a dimension capable of ensuring a sealing property by contacting the outer peripheral surface of the harness 5 at the raised position is formed.

  In order to insert and assemble the various harnesses 5 into the mounting panel 10, the assembly work is performed in a work place different from the machine body. First, each harness 5 is set to a length dimension that allows each harness 5 to be introduced into the driver's cab from the outside through the insertion hole 2 provided in the partition wall 1 and connected to a device at a predetermined position based on the design drawing. A predetermined number of wires and hoses combined as the harness 5 are gathered together, wound with an insulating tape, or inserted into a bellows tube and covered.

  The exterior harness 5 is prepared without attaching connectors 5a and 5a '(see FIG. 4, the same applies hereinafter) to the ends on the outdoor side and without attaching the connectors 5b on the indoor side. Each of these harnesses is inserted into an opening 15c of a grommet 15 set on the mounting panel 10 to determine the length dimension from the position of the mounting panel 10 to the connection of the device, and thereafter each wire is connected at the tip (inside of the room) of the harness 5. -Attach the connector 5b (joint) to the end of the tube.

  In addition, as shown in the schematic diagram of FIG. 4, when a cross 5 ′ is taken between the plurality of harnesses 5, 5, a necessary line is branched and crossed before applying the exterior in advance. The exterior is combined and each harness 5 is inserted through the corresponding grommet 15 from the outdoor side to the indoor side. When it is necessary to cross between the harnesses 5 and 5 on the indoor side, the relevant harnesses 5 and 5 are respectively passed through the grommets 15 and then the necessary wires are branched to correspond. 5 'should be taken over. Therefore, in such a case, it is only necessary that the exterior is once opened at a required portion at the time of branching, and then branched again and then the exterior. For this reason, the outer shape of the harness is complicated as shown in FIG. 1, and it is easy to incorporate a plurality of harnesses, which has been difficult in the past.

  When the required number of harnesses 5 are assembled to the mounting panel 10 in this manner, the unit of the assembled harness 5 is brought into the fuselage, and the bundle of harnesses 5 to be inserted into the cab side is opened from the outside to the opening of the partition wall 1 ( The inside of the cab is inserted through the charging hole 2), and the mounting panel 10 is fastened by the bolt 17 between the mounting hole provided in the partition wall 1 and the mounting hole 13a in the mounting seat 13 of the mounting panel 10 and fixed. To do. Thereafter, the connectors 5b and 5b 'that are attached to the terminals of the respective harnesses 5 located in the driver's cab are connected to the mounting portions of the corresponding devices. Further, the connectors 5a and 5a 'at the terminal portion of the harness 5 located on the outdoor side are connected to the connection portions of the corresponding devices. In addition, if each harness 5 is fixed to the vehicle body with a fixing bracket at an intermediate portion or a bent position of its exterior, it can be routed so that the portion bent in advance according to the wiring situation is fixed without lifting up and hindered. It can be piped.

  Thus, in this embodiment, since the various various harnesses 5 introduced through the insertion holes 2 of the partition wall 1 partitioning the inside and outside of the cab are integrated into a single mounting panel 10, the harness When unitizing the 5 groups, the harnesses 5 are linearly or bent in advance as planned according to a design drawing at a work place outside the vehicle body, and three-dimensionally mounted on the mounting panel 10 Can be supported. Even when the exterior of the harness needs to be strong, it can be assembled in a work space with a large space, so that the connector can be retrofitted, so that even if the harness becomes thick, there is no problem. Therefore, workability is improved, the finish is beautiful, and assembly is performed in a proper manner with minimal use of mounting brackets on mounting portions such as support members of the fuselage. Further, it is possible to prevent the strength of the partition wall from being lowered due to the formation of the grommet mounting hole. In addition, since local bending is not required at the equipment site, no excessive external force is generated at the grommet, and the sealing material (peripheral area) attached to the mounting panel ensures the seal with the partition wall, and the grommet The sealing effect can be improved.

  According to the present invention, not only in construction machine vehicles such as bulldozers as in the above-described embodiment, but also in the case where an opening through which a harness can be inserted all together without forming a large number of small holes in the partition wall, The same effect can be obtained by adopting it to industrial machines and equipment.

FIG. 1 is a perspective view showing an embodiment of a wiring / piping harness mounting structure according to the present invention. FIG. 2: is the front view (a) of one Embodiment of a mounting panel, and sectional drawing (b) which wrote together the aspect by which the harness was penetrated to the AA view cross section. FIG. 3 is an attachment cross-sectional view of the grommet for mounting the harness. FIG. 4 is a schematic diagram showing the arrangement of the harness according to the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bulkhead 2 Insertion hole 5 Harness 5 'Harness crossing 10 Mounting panel 14 Insertion hole 15 Grommet

Claims (2)

A wiring / piping harness mounting structure in which a plurality of harnesses are inserted through a partition wall that separates the outside and the interior of a work machine, and a plurality of insertion holes are provided on a single mounting panel in a required arrangement. provided by mounting each grommet with inserting the respective harness corresponding grommet into the corresponding insertion holes, a unit together multiple harnesses on one of the mounting panel, wherein this unitized mounting panels The unitized mounting panel is attached to the insertion hole by bolting the mounting hole provided in the partition so as to cover the insertion hole of the partition and the mounting hole in the mounting seat of the mounting panel , A wiring / piping harness mounting structure, wherein the plurality of harnesses are configured to be mounted through the partition wall. 2. The wiring / piping harness according to claim 1, wherein the harness mounted by the mounting panel is routed by wiring on the front side and / or the rear side of the plurality of grommets assembled to the mounting panel. Construction.

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