JP2011131744A - Piping and wiring clamp device for bus vehicle body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping and wiring clamp device for a bus vehicle body, which reduces the parts number of a clamping member for clamping a large variety of piping and wiring arranged under the floor of the bus vehicle body, reduces the man-hour required for clamping work, eliminates the variety of assembling quality, and corresponds to an increase and decrease in the size or the number of the piping and wiring. <P>SOLUTION: A gate type bracket 34 is attached between side members 12, 14 of a bus vehicle body rear part, and nylon tube bundles 38a, 38b for supplying brake air are fastened to the upper surface of the upper plate 34a by a nylon band 40 in the vehicle lateral direction. Working fluid pipes 46, 48 for power steering, a working fluid pipe 50 for clutch and a grease supply pipe 52 are fixed to clamp devices 54, 56 installed on the upper surface of the upper plate 34a. The piping 64 storing a harness bundle is fastened to a right side plate 34c by the nylon band 66. A connector 68 is installed on a left side plate 34b. Thereby, a large variety of piping and wiring are fastened to the single gate type bracket 34 according to category or usage. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a piping wiring fixing device that can arrange a large number of piping and wiring under a floor of a bus body with a simple structure.

  A large number of pipe wirings such as metal pipes, flexible tubes such as nylon tubes, and harnesses (electric wire bundles) are arranged at the rear lower part of the bus body. That is, there are pipes that supply hydraulic oil for power steering, hydraulic oil for clutches, etc. as metal pipes, and nylon tubes that supply and discharge compressed air from the air tank to the brake device and air suspension device as flexible tubes. is there.

  Conventionally, since these piping wirings are individually fixed, the number of parts of the fixing member is increased as a whole, and a large number of work steps are required to fix the piping wirings. In addition, the assembly state of each pipe wiring varied greatly, and the assembly quality was not stable. Many proposals have been made so far to solve these problems.

For example, Patent Document 1 discloses a pipe in which a resin clamp having a plurality of pipe fitting recesses is fitted and fixed to a bracket having a U-shaped cross section fixed to a lower surface of a vehicle floor so that a plurality of pipes can be fixed. A fixing structure is disclosed.
Patent Document 2 discloses a wiring attachment structure provided under the floor of a bus. This wiring attachment structure makes it possible to take out the passage floor of the bus body, take out this passage floor, fix the wiring on the lower surface of the passage floor, and return the passage floor to which the wiring is fixed to the original floor surface. It is a thing.

  Patent Document 3 discloses a fixing means in which piping such as a fuel pipe and a brake pipe laid under the floor of a vehicle is sandwiched and fixed by an elastic body such as rubber or resin.

Japanese Utility Model Publication No. 62-181456 and drawings Japanese Patent Laid-Open No. 5-131884 JP-A-2005-106162

  Since there are a large number of piping wirings arranged in the bus body, there is a problem that even if the fixing means disclosed in Patent Documents 1 to 3 are used, the number of parts is still large and the fixing work is complicated. In particular, in the chassis frame region disposed under the floor slightly ahead of the rear wheel of the bus body, a large number of piping wirings intersect the vehicle longitudinal direction and the vehicle width direction. It cannot be handled by means. Moreover, when fixing with the resin clip disclosed by patent document 2, piping size and the number are decided beforehand, and there exists a problem that it cannot respond to change of piping size, increase / decrease in piping and wiring.

  In view of the problems of the prior art, the present invention reduces the number of parts of the fixing member that fixes various pipe wirings arranged under the floor of the bus body, and reduces the man-hour required for fixing work. The purpose is to eliminate variations in assembly quality and to accommodate the increase and decrease in the size and number of piping wires.

In order to achieve such an object, a piping body fixing device for a bus body of the present invention includes:
In the piping wiring fixing device that fixes the piping wiring to the chassis frame under the floor of the bus body,
A gate bracket comprising an upper plate and left and right side plates is arranged under the floor of the bus body, and the upper plate is arranged upward, and the legs formed integrally with the left and right side plates are fixed to the chassis frame,
Piping wirings are fixed to the inner and outer surfaces of the upper plate and the left and right side plates of the portal bracket by a fixing tool.

  In the device according to the present invention, the gate bracket is used, and the piping wirings are sorted and fixed on both the upper and inner surfaces of the portal bracket and the side plate. Also, it can be dealt with by arranging only one portal bracket. Therefore, it is possible to reduce the number of parts of the fixing means and to reduce the man-hours for assembling the piping wiring. Therefore, parts cost and work cost can be reduced.

  Moreover, since piping wiring can be fixed to the top plate and the side plate of the gate-shaped bracket while sorting them according to type or application, variations in the assembled state can be reduced, and the assembly quality can be stabilized. Furthermore, since the installation position of each piping wiring can be known at a glance, these maintenances are facilitated.

  In the device according to the present invention, the portal bracket is disposed between the pair of side members arranged at an interval in the vehicle width direction so as to face in the vehicle width direction, and an air tank is disposed outside the side frame. The connected compressed air supply flexible tube is arranged in the vehicle width direction and fixed to the upper surface of the top plate of the gate bracket, and the hydraulic oil supply piping for supplying hydraulic oil to various hydraulic actuators is provided in the vehicle longitudinal direction It is good to fix to the inner surface of the top plate or side plate of the gate-shaped bracket through the inside of the gate-shaped bracket.

As a result, the route of the compressed air supply flexible tube and the hydraulic oil supply piping can be arranged with the shortest course without difficulty, and the wiring work is facilitated. Further, since the compressed air supply flexible tube and the hydraulic oil supply pipe are arranged separately on the outer side and the inner side of the portal bracket, variations in the assembled state can be reduced and the assembly quality can be improved.
In addition, the flexible tube for compressed air supply is fixed to the portal bracket in the vehicle width direction, and the hydraulic oil supply piping is fixed to the portal bracket in the longitudinal direction of the vehicle body. Becomes easier.

  In addition to the above configuration, the harness bundle (wire bundle) may be fixed to the outer surface of the side plate of the portal bracket with the front-rear direction of the vehicle body. As a result, the position of the harness bundle and the fixing position of the two types of pipes relative to the gate bracket can be clearly divided and arranged, so that variations in the assembly state can be reduced, the assembly quality can be improved, and each individual can be easily identified. become.

In the device according to the present invention, it is preferable that an attachment hole is provided in the upper plate or the side plate of the gate-shaped bracket and the piping wiring is fastened to the upper plate or the side plate with a flexible band passing through the attachment hole.
As a result, even if the size and number of pipe wiring are increased or decreased, all the pipe wiring can be fastened to the gate bracket with the optimum tightening force. In particular, when the flexible tube is fastened with the flexible band, the holding force with respect to the flexible tube can be improved by adjusting the tightening force by the flexible band.

  According to the apparatus of the present invention, in a piping wiring fixing device for fixing piping wiring to a chassis frame under the floor of a bus body, a gate-shaped bracket comprising an upper plate and left and right side plates is provided under the floor of the bus vehicle body. Are fixed to the chassis frame, and the pipe wiring is fixed to the inner and outer surfaces of the upper and left and right side plates of the gate-shaped bracket by fixtures. Since it did in this way, the number of parts of a fixing means can be reduced and part cost and assembly work cost of piping wiring can be reduced.

  In addition, piping wiring can be fixed to the top plate and side plate of the gate bracket while sorting by type or application, so that variation in assembly state can be reduced, the assembly quality can be stabilized, and the mounting position of each piping wiring This makes it easy to maintain these.

It is a perspective view which shows the chassis frame of the bus vehicle body rear part which concerns on one Embodiment of this invention apparatus. It is sectional drawing which follows the AA line of FIG. It is the perspective view which expanded a part of FIG. 1 and was seen from another direction. FIG. 3 is a partially enlarged view of FIG. 2. It is a perspective view of the portal bracket used in the embodiment.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

(Embodiment)
One embodiment of the device of the present invention will be described with reference to FIGS. In FIG. 1, the main members of the chassis frame 10 at the rear of the bus body are a left side member 12 and a right side member 14 that are spaced apart from each other in the longitudinal direction of the vehicle body, and a plurality of outriggers 16 that are disposed in the vehicle width direction. And 18 etc. The side members and the outriggers are joined so as to cross each other in the orthogonal direction. A plurality of outriggers are arranged along the longitudinal direction of the vehicle body, and a vehicle body body (not shown) is coupled to the outer surface of the outriggers.

  A rear wheel 20 is provided outside the side members 12 and 14. A pair of air tanks 22 and 24 are provided outside the side members 12 and 14 on the front side of the rear wheel 20. An air suspension device including an airbag 26 is provided between the axle and the chassis frame 10. The air suspension device absorbs various vibrations and shocks that the vehicle body receives from the road surface during traveling.

  A shock absorber 27 is interposed between the axle and the chassis frame 12 in the vicinity of the airbag 26. The shock absorber 27 attenuates the cushion action by the air suspension device. A cross member 28 is installed between the side members 12 and 14 near the rear wheel 20.

  2 to 4, particularly FIG. 4, a portal bracket 34 is attached to the upper sides of frames 30 and 32 that are installed between the outrigger 16 and the cross member 28. The portal bracket 34 includes an upper plate 34a, left and right side plates 34b and 34c, and leg flanges 34d formed integrally with the left and right side plates 34b and 34c. The left and right plates 34b and 34c are bent in a direction perpendicular to the upper plate 34a to form a gate shape. The leg flange 34d is formed in a direction perpendicular to the left and right side plates 34b, 34c, and the leg flange 34d is coupled to the frames 30, 32 by bolts 36.

  As shown in FIG. 3, flexible nylon tube bundles 38a and 38b having one end connected to the air tank 22 or 24 are disposed in the vehicle width direction. The nylon tube bundle is a tube group for supplying and discharging brake compressed air between a brake device (not shown) and the air tanks 22 and 24. The nylon tube bundles 38 a and 38 b are fastened to the upper surface of the upper plate 34 a of the portal bracket 34 with a flexible nylon band 40.

  As shown in FIG. 5, a plurality of mounting holes 42 are formed in the upper plate 34 a of the portal bracket 34, and recesses 44 are formed in the upper plates 34 a on both sides of the mounting hole 42. The nylon tube bundles 38a and 38b are fastened to the upper surface of the upper plate 34a in the vehicle width direction by a nylon band 40 that passes through the attachment hole 42 and the recess 44.

  Inside the portal bracket 34, four hydraulic oil pipes are disposed in the longitudinal direction of the vehicle body. That is, in order from the right side of the vehicle body, steel power steering hydraulic oil pipes 46 and 48, a steel clutch hydraulic oil pipe 50, and a steel grease supply pipe 52 for supplying grease to a front wheel (not shown) are arranged in parallel to each other. It is installed.

  As shown in FIG. 4, clamp devices 54 and 56 are attached to the lower surface of the upper plate 34 a of the portal bracket 34 by bolts 58. The clamp devices 54 and 56 are constituted by a two-divided casing. The four hydraulic oil pipes are clamped and fixed to the lower surface of the upper plate 34a by the clamp devices 54 and 56.

  Further, as shown in FIGS. 3 and 4, four heating hot water pipes 60 are arranged in parallel to each other in the front-rear direction of the vehicle body in the inner space of the portal bracket 34. A clamp device 62 is attached to the outrigger 16. In the clamp device 62, a casing 62a is filled with a two-part rubber plate 62b. On the boundary surface of the rubber plate 62b, a circular recess for fitting the pipe is provided in a staggered pattern. The hydraulic oil pipes 46, 48 and 50 and the hot water pipe 60 are inserted into the concave portion and are fixed tightly by a rubber plate 62b.

  In addition, a flexible pipe 64 that accommodates a harness bundle (wire bundle) inside the right side plate 34c of the portal bracket 34 is disposed in the longitudinal direction of the vehicle body. Two mounting holes 45 are formed in the right side plate 34c. The pipe 64 is fastened to the right side plate 34 c by a nylon band 66 inserted into the mounting hole 45.

As shown in FIG. 4, a connector 68 is attached to the outer surface of the left side plate 34 b of the portal bracket 34. Nylon tubes 70 and 72 are connected to the connector 68. Compressed air is supplied to the air suspension device through the nylon tubes 70 and 72.
A relay valve 74 is attached to the frame 30, and a relay valve 76 is attached to the frame 32. Compressed air from the air tanks 22 and 24 is supplied to a brake device (not shown) through the nylon tubes 80 and 82 and the ABS valve 78.

  The present embodiment has such a configuration, and the gate bracket 34 is used, and the piping wirings are distributed and fixed on both the inner and outer surfaces of the upper plate 34a and the side plates 34b and 34c of the gate bracket 34. Even if there are a wide variety of piping wirings in the bus body, the piping wirings can be sorted and arranged by simply arranging one gate-shaped bracket 34. Therefore, the number of parts of the fixing means can be reduced, and the man-hours for assembling the piping wirings can be reduced. Therefore, parts cost and work cost can be reduced.

  In addition, since the piping wiring can be fixed to the top plate 34a and the side plates 34b, 34c according to the type while being fixed to the gate-shaped bracket 34, variation in the assembled state can be reduced, the assembling quality can be stabilized, and each piping wiring can be fixed. Since the mounting position can be seen at a glance, these maintenances are facilitated.

  The nylon tube bundles 38a and 38b connected to the air tanks 22 and 24 arranged on the outer side in the vehicle width direction of the portal bracket 34 are fastened to the upper plate 34a of the portal bracket 34 in the vehicle width direction, and various The hydraulic oil pipes 46, 48 and 50 and the grease supply pipe 52 are fixed to the lower surface of the upper plate 34a, the pipe 64 containing the harness bundle is fixed to the right side plate 34c, and the connector 68 is fixed to the left side plate 34b. The routing routes of the various types of piping wiring can be arranged with the shortest course without difficulty, facilitating the routing work and fixing by sorting for each application, so that the assembly quality can be improved. In addition, identification of each piping wiring is facilitated, and maintenance is facilitated.

  Further, the nylon band 40 inserted into the mounting hole 42 of the portal bracket 34 is used to fasten the flexible nylon tube bundles 38a and 38b, and the nylon band 66 inserted into the mounting hole 45 of the portal bracket 34 is flexible. Therefore, the holding force can be improved by exerting an optimum tightening force. Further, if the nylon bands 40 and 68 are used, it is possible to cope with an increase or decrease in the size and the number of attachments of the piping wirings.

According to the present invention, a wide variety of piping wirings at the rear of the bus body can be fixed in an orderly and efficient manner, the number of parts of the fixing means can be reduced, and the number of assembling steps for the piping wirings can also be reduced. Therefore, parts cost and work cost can be reduced.

DESCRIPTION OF SYMBOLS 10 Chassis frame 12 Left side member 14 Right side member 16, 18 Outrigger 20 Rear wheel 22, 24 Air tank 26 Air bag 27 Shock absorber 28 Cross member 30, 32 Frame 34 Portal bracket 34a Upper plate 34b Left side plate 34c Right side plate 34d Leg Flange 36 Bolt 38a, 38b Nylon tube bundle 40, 66 Nylon band (flexible band)
42 Mounting hole 44 Recess 46, 48 Hydraulic oil pipe for power steering 50 Hydraulic oil pipe for clutch 52 Grease supply pipe 54, 56, 62 Clamp device 60 Hot water pipe for heating 64 Pipe 68 Connector 70, 72, 80, 82 Nylon tube 74, 76 Relay valve 78 ABS valve

Claims (4)

In the piping wiring fixing device that fixes the piping wiring to the chassis frame under the floor of the bus body,
Under the floor of the bus body, arrange the portal bracket consisting of the upper plate and the left and right side plates with the upper plate facing upward, and fix the legs integrally formed on the left and right side plates to the chassis frame,
A piping wiring fixing device for a bus body, wherein piping wiring is fixed to the inner and outer surfaces of the upper plate and the left and right side plates of the gate bracket by a fixing tool. The portal bracket is disposed in the vehicle width direction between a pair of side members arranged at intervals in the vehicle width direction, and an air tank is disposed outside the side frame,
The flexible tube for supplying compressed air connected to the air tank is disposed in the vehicle width direction, and fixed to the upper surface of the upper plate of the portal bracket.
A hydraulic oil supply pipe for supplying hydraulic oil to various hydraulic actuators is arranged in the longitudinal direction of the vehicle body, passes through the inside of the gate bracket, and is fixed to the upper plate of the gate bracket or the inner surface of the side plate. The piping wiring fixing device for a bus body according to claim 1.   3. The apparatus for fixing piping wirings for a bus body according to claim 2, wherein the harness bundle is fixed to the outer surface of the side plate of the portal bracket with the longitudinal direction of the body.   The upper plate or the side plate of the portal bracket is provided with a mounting hole, and piping wiring is fastened to the upper plate or the side plate with a flexible band passing through the mounting hole. 3. The piping wiring fixing device for a bus body according to any one of items 3 to 4.

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