JP6158619B2 - Support structure for on-vehicle equipment - Google Patents

Description

  The present invention relates to a support structure for on-vehicle equipment.

  Conventionally, exhaust purification is carried out by installing an aftertreatment device in the middle of the exhaust pipe of a diesel engine. As this type of aftertreatment device, particulate matter (particulate matter) discharged from the diesel engine is used. There are known particulate filters that collect particulate matter) and selective reduction catalysts having the property of selectively reacting NOx (nitrogen oxide) with a reducing agent even in the presence of oxygen.

  The particulate filter mainly comprises a filter body having a porous honeycomb structure made of ceramic such as cordierite, and the inlets of the respective flow paths partitioned in a lattice shape in the filter body are alternately plugged by plugs. In addition, for the flow channel whose inlet is not sealed, its outlet is sealed with a plug, and only the exhaust gas that has permeated through the porous thin wall partitioning each flow channel is discharged downstream. Thus, the particulates are collected on the inner surface of the porous thin wall. Then, the particulates in the exhaust gas are collected and accumulated on the inner surface of the porous thin wall, so that the particulate filter is burned and removed before the exhaust resistance increases due to clogging, and the particulate filter is regenerated. There is a need.

  On the other hand, in the field of industrial flue gas denitration treatment in plants and the like, the effectiveness of a method for reducing and purifying NOx using ammonia as a reducing agent is already widely known. In recent years, the use of non-toxic urea water as a reducing agent has been studied because of the problems associated with running the vehicle itself. That is, if urea water is added to the exhaust gas upstream of the selective catalytic reduction catalyst, the urea water is thermally decomposed into ammonia and carbon dioxide gas in the exhaust gas, and the NOx in the exhaust gas is better on the selective catalytic reduction catalyst due to ammonia. Will be reduced and purified.

  For this reason, in vehicles such as trucks, for example, as shown in FIGS. 9 and 10, a chassis frame 2 extending in the front-rear direction of the vehicle 1, a frame side bracket 3 disposed on the chassis frame 2, and the frame A base bracket 5 having a tank side bracket 4 bolted to the side bracket 3 is attached, and a urea water tank 7 is mounted on the tank side bracket 4 of the base bracket 5 via a tank holder 6. There is one in which a urea water pump 9 is mounted via a channel bracket 8 on the surface of the bracket 4 opposite to the surface on which the urea water tank 7 is mounted.

  As shown in FIG. 9, the channel bracket 8 is attached to the tank side bracket 4 in two upper and lower stages so as to extend in the horizontal direction, and an insertion hole 10 is formed at a required position in the longitudinal direction. A support nut 11 is fixed to the inner surface side of the drilled portion 10, and a support bolt 12 is inserted so that a washer 12 a is inserted into a support portion 9 a of the urea water pump 9, and an insertion hole of the channel bracket 8 is inserted. The urea water pump 9 is attached to the tank side bracket 4 by being screwed into the support nut 11 from 10.

  For example, Patent Document 1 shows a general technical level related to the support structure for on-vehicle equipment as shown in FIGS. 9 and 10.

JP 2013-92114 A

  By the way, recently, the capacity of the urea water tank 7 tends to increase, and the vibration of the tank side bracket 4 of the base bracket 5 tends to increase, which may adversely affect the operation of the urea water pump 9 as a mounted device. Therefore, it is necessary to increase the rigidity of the base bracket 5.

  However, increasing the rigidity of the base bracket 5 as described above may lead to an increase in the weight of the vehicle 1 as a whole, which is not a preferable measure.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a support structure for a vehicle-mounted device that can reliably attenuate the vibration of the mounted device while suppressing an increase in the weight of the entire vehicle. is there.

The present invention includes a base bracket attached to a chassis frame of a vehicle,
A projecting piece arranged so as to protrude from a plurality of required locations of the base bracket;
A support bracket attached to the projecting piece to be elastically supported via an elastic fastening member and to which a mounted device is attached ,
The plurality of projecting pieces are disposed on an upper side and a lower side of the base bracket, the projecting pieces disposed on the upper side are welded to the base bracket, and the projecting pieces disposed on the lower side are disposed on the upper side. And a base bracket that is bolted to the base bracket as a bottom bracket so that the distance between the projecting pieces is adjustable .

In the support structure for a vehicle-mounted device, the elastic fastening member includes a cylindrical elastic body formed on an outer peripheral surface of an annular groove to be fitted into a fitting hole formed in the projecting piece, and the elastic body. A collar fitted into the through-hole and having a flange at the end; an elastic fastening bolt that penetrates the collar and is inserted into the elastic fastening bolt hole; and is screwed to the elastic fastening bolt It is preferable to provide an elastic fastening nut.

The base bracket includes a frame-side bracket disposed on the chassis frame, and a tank-side bracket that is bolted to the frame-side bracket and mounts a urea water tank. It is preferable that the projecting piece is disposed on a surface opposite to the surface to be mounted, and the mounting device is a urea water pump.

  According to the support structure for on-vehicle equipment of the present invention, it is possible to achieve an excellent effect that vibration of the on-board equipment can be reliably damped while suppressing an increase in the weight of the entire vehicle.

In the Example of the support structure of the mounting apparatus for vehicles of this invention, it is a perspective view which shows the state which fastens a support bracket and a bottom bracket using an elastic fastening member. In the Example of the support structure of the mounting apparatus for vehicles of this invention, it is a perspective view which shows the state which fastens a support bracket to a protrusion piece using an elastic fastening member. In the Example of the support structure of the mounting apparatus for vehicles of this invention, it is a perspective view which shows the state which fastens a bottom bracket to a tank side bracket using a volt | bolt. In the Example of the support structure of the mounting apparatus for vehicles of this invention, it is a perspective view which shows the state which fastens a urea water pump to a support bracket using a volt | bolt. It is a perspective view which shows the state which the assembly | attachment of the urea water pump was completed in the Example of the support structure of the mounting apparatus for vehicles of this invention. It is sectional drawing which shows the elastic fastening member in the Example of the support structure of the mounting apparatus for vehicles of this invention, Comprising: It is VI-VI sectional drawing of FIG. It is a top view which shows the Example of the support structure of the mounting apparatus for vehicles of this invention. It is a perspective view which shows the state which covered the urea water pump in the Example of the support structure of the mounting apparatus for vehicles of this invention with the protective cover. It is a perspective view which shows an example of the support structure of the conventional vehicle mounting apparatus. It is a top view which shows an example of the support structure of the conventional vehicle mounting apparatus.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIGS. 1-8 is an Example of the support structure of the mounting apparatus for vehicles of this invention, In the figure, the part which attached | subjected the code | symbol same as FIG.9 and FIG.10 represents the same thing, Basic Although the construction is the same as that of the conventional one shown in FIGS. 9 and 10, the feature of this embodiment is that a support bracket to which a urea water pump 9 as a mounted device is attached as shown in FIGS. 13 is attached to the base bracket 5 so as to be elastically supported via the elastic fastening member 14.

  As shown in FIGS. 7 and 8, a urea water tank 7 is mounted on the tank side bracket 4 of the base bracket 5 via a tank holder 6, and the urea water tank 7 of the tank side bracket 4 is mounted. As shown in FIG. 3, protrusions 15 for attaching the support bracket 13 are arranged at a plurality of required positions on the surface opposite to the surface to be mounted.

  The plurality of projecting pieces 15 are disposed at two locations on the upper side and the lower side of the tank side bracket 4 of the base bracket 5, and the projecting pieces 15 disposed at the two upper locations are provided on the tank side bracket 4. The distance between the projecting pieces 15 which are welded and disposed at the two lower positions is adjusted to the tank side bracket 4 as one bottom bracket 16 so that the distance between the projecting pieces 15 can be adjusted with respect to the projecting pieces 15 disposed at the two upper positions. The bolt 18 (see FIG. 3) is used for fastening. The distance between the bottom brackets 16 with respect to the projecting pieces 15 disposed at the two upper positions can be adjusted by making the two mounting holes 17 formed in the bottom bracket 16 into elongated holes extending in the vertical direction. is there. Incidentally, the reason for doing this is to make it possible to absorb the manufacturing error in the event that a manufacturing error of the support bracket 13 has occurred. The interval adjusting bolt 18 is screwed through a fixing hole 20 into an interval adjusting nut 19 (see FIG. 2) welded to the surface on which the urea water tank 7 of the tank side bracket 4 is mounted. A washer 21 (see FIG. 3) is interposed between the bottom bracket 16 and the head of the distance adjusting bolt 18.

  As shown in FIG. 1, the support bracket 13 is formed with an I-shaped bracket main body 13a made of a thin metal plate, and is bent so as to protrude horizontally from the upper and lower width ends of the bracket main body 13a and the protruding piece. 15 is provided with a joint portion 13b that is overlapped via an elastic fastening member 14, and a urea water pump is provided on the back surface side of the insertion hole 10 formed in two places on the upper side and one lower side of the bracket body 13a. A support nut 11 into which 9 support bolts 12 (see FIG. 4) are screwed is welded.

  As shown in FIG. 6, the elastic fastening member 14 is formed with an annular groove 14b fitted into a fitting hole 15a formed in the protruding piece 15 on the outer peripheral surface of an elastic body 14a such as a cylindrical rubber. The collar 14e having the flange portion 14d is inserted into the through hole 14c of the elastic body 14a, the elastic fastening bolt 14f is passed through the collar 14e, and the elastic fastening bolt 14f is further attached to the support bracket 13. The elastic fastening bolt hole 13c drilled in the joint portion 13b is inserted, and the elastic fastening nut 14g is screwed to the tip of the elastic fastening bolt 14f. A washer 14h is interposed between the collar 14e and the head of the elastic fastening bolt 14f.

  As shown in FIG. 2, the fitting holes 15 a of the projecting pieces 15 disposed at two locations on the upper side of the base bracket 5 are respectively formed with notches 15 b that open to the inside facing each other, and from the notches 15 b. The elastic body 14a can be fitted. Further, as shown in FIGS. 1 and 2, the fitting holes 15 a of the projecting pieces 15 (bottom bracket 16) disposed at the two lower sides of the base bracket 5 are respectively arranged on the outer side opposite to the inner side facing each other. A notch 15c that opens is formed, and the elastic body 14a can be fitted from the notch 15c.

  In FIG. 8, reference numeral 22 denotes a protective cover that covers the urea water pump 9.

  Next, the operation of the above embodiment will be described.

  First, as shown in FIG. 1, the elastic body 14a of the elastic fastening member 14 is fitted into the fitting hole 15a from the notch 15c of the projecting piece 15 of the bottom bracket 16, and both width end portions of the support bracket 13 on the lower side of the bracket body 13a. The collar 14e of the elastic fastening member 14 is attached to the elastic body in a state in which the joint portion 13b formed so as to project from the horizontal direction is overlapped with the protruding piece 15 of the bottom bracket 16 via the elastic body 14a. The elastic fastening bolt 14f is inserted into the through hole 14c of 14a and the washer 14h is inserted into the collar 14e, and the elastic fastening bolt 14f is further drilled in the joint portion 13b of the support bracket 13. The elastic fastening nut 14g is screwed onto the tip of the elastic fastening bolt 14f. By, joining the protrusion 15 of the support bracket 13 and bottom bracket 16.

  Subsequently, as shown in FIG. 2, the elastic body 14 a of the elastic fastening member 14 is fitted into the fitting hole 15 a from the notches 15 b of the projecting pieces 15 disposed at two positions on the tank side bracket 4 of the base bracket 5. A state in which a joint portion 13b that is bent so as to protrude in the horizontal direction from both width end portions on the upper side of the bracket body 13a of the support bracket 13 is superposed on the upper protruding piece 15 via the elastic body 14a. Then, the collar 14e of the elastic fastening member 14 is fitted into the through hole 14c of the elastic body 14a, the elastic fastening bolt 14f is passed through the collar 14e so that the washer 14h is interposed, and the elastic fastening bolt is further inserted. 14f is inserted into an elastic fastening bolt hole 13c drilled in the joint portion 13b of the support bracket 13, and elastically inserted into the tip of the elastic fastening bolt 14f. It screwed a binding nut 14 g, thereby, the relative tank side bracket protrusion 15 disposed on the upper side two places 4 of the base bracket 5 to join the joint portion 13b of the upper two locations of the support bracket 13.

  Thereafter, as shown in FIG. 3, the interval adjusting bolt 18 is inserted so that the washer 21 is interposed in the mounting hole 17 of the bottom bracket 16, and the interval adjusting bolt 18 is further moved to the urea of the tank side bracket 4. The interval adjusting nut 19 (see FIG. 2) welded to the surface on which the water tank 7 is mounted is screwed through the fixing hole 20 to complete the joining of the bottom bracket 16 to which the support bracket 13 is attached to the tank side bracket 4. To do. Here, the two mounting holes 17 drilled in the bottom bracket 16 are elongated holes extending in the vertical direction, respectively, so that the distance between the bottom brackets 16 with respect to the projecting pieces 15 disposed at the two upper positions can be adjusted. Therefore, even if a manufacturing error of the support bracket 13 occurs, the manufacturing error can be absorbed. At this point, the support bracket 13 is attached to the tank side bracket 4 of the base bracket 5 so as to be elastically supported via the elastic body 14a of the elastic fastening member 14, as shown in FIG.

  Next, as shown in FIG. 4, when the support bolt 12 is inserted so that the washer 12 a is interposed in the support portion 9 a of the urea water pump 9 and screwed into the support nut 11 from the insertion hole 10 of the support bracket 13, The urea water pump 9 is attached to the tank side bracket 4 via the support bracket 13, thereby completing the installation of the urea water pump 9 as shown in FIG. 5. Finally, the urea water pump 9 is covered with a protective cover 22 as shown in FIG.

  As a result, the urea water pump 9 as the mounted device is elastically supported with respect to the tank side bracket 4 of the base bracket 5 and the vibration of the urea water pump 9 can be attenuated. Even if the vibration of the tank side bracket 4 of the base bracket 5 increases as the capacity of the urea water tank 7 increases, there is no fear of adversely affecting the operation of the urea water pump 9, and the rigidity of the base bracket 5 is reduced. The weight of the entire vehicle 1 can be avoided.

  Further, in the case of this embodiment, there is no concern that the assembling workability of the urea water pump 9 is hindered as compared with the conventional example shown in FIGS.

  Furthermore, even if the type and capacity of the urea water pump 9 to be mounted are changed, the support bracket 13 can be coped with only by changing the positions of the insertion hole 10 and the support nut 11, and parts can be shared. .

  Thus, the vibration of the urea water pump 9 as the mounted device can be reliably damped while suppressing an increase in the weight of the entire vehicle 1.

  In addition, the support structure of the on-vehicle equipment of the present invention is not limited to the above-described embodiment, and the plurality of projecting pieces are provided at two locations on the upper side and the lower side on the tank side bracket of the base bracket. Instead of being arranged, it may be arranged in two places on the upper side and one place on the lower side, or one place on the upper side and two places on the lower side. It goes without saying that various changes can be made without departing from the scope of the present invention, such as possible.

1 Vehicle 2 Chassis Frame 3 Frame Side Bracket 4 Tank Side Bracket 5 Base Bracket 7 Urea Water Tank 9 Urea Water Pump (Installed Equipment)
DESCRIPTION OF SYMBOLS 13 Support bracket 13c Elastic fastening bolt hole 14 Elastic fastening member 14a Elastic body 14b Annular groove 14c Through-hole 14d Flange part 14e Collar 14f Elastic fastening bolt 14g Elastic fastening nut 15 Projection piece 15a Fitting hole 16 Bottom bracket 17 Mounting hole 18 Space adjustment bolt 19 Spacing adjustment nut

Claims (3)

A base bracket attached to the chassis frame of the vehicle;
A projecting piece arranged so as to protrude from a plurality of required locations of the base bracket;
A support bracket attached to the projecting piece to be elastically supported via an elastic fastening member and to which a mounted device is attached ,
The plurality of projecting pieces are disposed on an upper side and a lower side of the base bracket, the projecting pieces disposed on the upper side are welded to the base bracket, and the projecting pieces disposed on the lower side are disposed on the upper side. A support structure for a vehicle-mounted device, wherein the base bracket is bolted to the base bracket as a bottom bracket so that the distance between the projecting pieces disposed on the base bracket is adjustable . The elastic fastening member includes a cylindrical elastic body in which an annular groove is formed in an outer peripheral surface to be inserted into a fitting hole formed in the projecting piece, a through hole of the elastic body, and a flange at an end portion. A collar having a portion, an elastic fastening bolt that passes through the collar and is inserted into an elastic fastening bolt hole that is formed in the support bracket, and an elastic fastening nut that is screwed to the elastic fastening bolt. Item 2. A structure for supporting a vehicle-mounted device according to Item 1 . The base bracket includes a frame side bracket disposed on the chassis frame, and a tank side bracket that is bolted to the frame side bracket and mounts a urea water tank, and the urea water tank of the tank side bracket is mounted. that surface and with the projecting piece on the opposite side is disposed, the mounting device supporting structure of a vehicle-mounted device according to claim 1 or 2, wherein the urea water pump.

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