JP2005112253A - Structure of installation part for valve bracket and valve bracket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of the installation part for a valve bracket not interfering with the function part of a vehicle body in an engine room by increasing the support force of a degassing tank. <P>SOLUTION: The valve bracket 4 having a fixed part to a vehicle body side is installed over the apron part 2 and a tire house part 3 of the vehicle. The valve bracket 4 is formed in an approximately L-shape, the lower one end part of the valve bracket 4 is protruded from the upper surface 3a of the tire house part 3, and the tank 27 of a degassing tank 8 for the cooling water of an engine is installed at the protruded part. The degassing tank 8 and the negative pressure selector valve for an air locking hub are installed on the valve bracket 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an assembly structure of a valve bracket capable of improving the layout of an engine room by efficiently concentrating functional parts such as automobile valves in one place, and the valve bracket.

 FIG. 10 shows the boundary between the apron 51 and the tire house 52 at the side of the engine room 50 of a conventional diesel vehicle. As shown in the figure, a mounting portion for a degassing tank 53 is provided on a horizontal surface 52 a at the top of the tire house portion 52. The degassing tank 53 includes a tank 54 and a tank bracket 55, and a plurality of attachment pieces 54 a (only one is shown in the drawing) formed on the tank 54 are positioned at the upper end portion of the tank bracket 55. The bolt 56 is fastened. The lower end portion of the mounting arm 55 is fastened to the tire house portion 52 with bolts 56. As shown in the figure, when the degassing tank 53 is mounted, the tank 54 is disposed so as to protrude inward of the engine room 50. The tank 54 serves to reserve engine cooling water and to degas the gas mixed in the cooling water.

  As described above, the degassing tank 53 accumulates the cooling water, so that the weight of the tank 54 is large, and it is desirable that the degassing tank 53 is functionally disposed at a high place, and the length of the mounting arm 55 is increased. Therefore, the distance between the horizontal surface 52a, which is the attachment portion of the tire house portion 52 to which the degassing tank 53 is attached, and the tank 54 is increased, and the length of the attachment arm 55 is increased. Therefore, the moment in the horizontal plane 52a is increased, and as a result, it is necessary to increase the supporting force of the degassing tank 53.

FIG. 11 shows that an extension 55b is formed by extending the attachment arm 55 of the degassing tank 53 partially below the side surface of the tire house 52 at a position on the engine room side of the horizontal surface 52a of the tire house 52. The extension portion 55 b is fastened to the side surface of the tire house portion 52 by a bolt 56. By mounting in this way, the supporting force of the degassing tank 53 is increased. In FIG. 12, the skirt 55c of the mounting arm 55 of the degassing tank 53 is widened to increase the support force of the tank 54.
Japanese Patent Laid-Open No. 10-68320 (tank mounting structure, abstract, see FIG. 1) JP 2001-253254 A (Canister mounting structure, see FIG. 1) Japanese Patent Laid-Open No. 10-278621 (see description of freewheel mechanism, paragraphs [0002-0010], FIGS. 13 and 14)

However, the side parts of the engine room 50 such as the apron part 51 and the tire house part 52 of the automobile have functional parts (parts) of the vehicle body such as piping of a negative air pressure circuit, wire harnesses of other electrical components, and pipes of an air conditioner. Many are arranged or arranged. Therefore, as shown in FIG. 11, when the extension part 52b is formed in the attachment arm 55 of the degassing tank 53, the bolt 56 which fastens the routing member 61 and the extension part 55b crosses. Further, as shown in FIG. 12, when the bottom of the mounting arm 55 of the degassing tank 53 is widened, a box-shaped control device 62 and other members disposed on the tire house portion 52, such as routing, are arranged. The plate-like mounting bracket 63 of the member and the mounting arm 55 may interfere with each other. Therefore, the mounting position of the control device 62, the mounting bracket 63, or the degassing tank 53 has to be changed, causing a problem in the layout of the narrow engine room 50.
SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and increases the support force of the degassing tank so as not to interfere with the functional parts of the vehicle body in the engine room and the valve thereof. The purpose is to provide a bracket.

In order to achieve the above object, the mounting structure of the valve bracket of the present invention is provided with a negative pressure switching valve that switches the connection state of the drive unit and the wheel of the vehicle with the air pressure, and the upper surface of the apron portion and the tire house portion of the vehicle. A bracket having a fixed portion to the vehicle body over the side, the bracket being formed in a substantially L-shape, one end of the bracket projecting from the upper side of the tire house to the engine side, and cooling of the engine to the projecting portion The water tank was fixed.
In the above invention, the regulator valve is disposed in front of the negative pressure switching valve in a state where the negative pressure switching valve is mounted on the vehicle, and the valve valve of the negative pressure switching valve is covered with the regulator valve.
In the above invention, a pipe (pipe 33, 34) is provided with a bracket projecting from the upper side of the tire house portion toward the engine side, connected to the projecting portion on the negative pressure switching valve side, and routed from the engine room side. ) Was formed.
In the above invention, a vacuum switch mounting portion is provided on the upper side of the vehicle of the negative pressure switching valve, and the vacuum switch is disposed above the negative pressure switching valve.
In order to achieve the above object, the bracket structure of the present invention is a bracket for fixing to a vehicle a negative pressure switching valve that switches a connection state between a driving unit of a vehicle and a wheel by air pressure, and the bracket is an apron. A first bracket (base fitting 9) having an apron parallel portion substantially parallel to the tire house and a tire house parallel portion substantially parallel to the upper surface of the tire house and having a fixing portion to the apron; A second bracket (A metal fitting 10) having a connecting portion that obliquely connects both sides of the L-shaped portion and a fixing portion to the tire house, and the connecting portion of the second bracket and the apron parallel portion of the first bracket are connected. And a third bracket (B metal fitting 11) for fixing the negative pressure switching valve. The second bracket projects from the upper side of the tire house to the engine side, and engine cooling water is projected to the projecting portion. To fix the link.

The mounting structure of the valve bracket of the present invention is provided with a negative pressure switching valve that switches the connection state of the vehicle drive unit and the wheel with the air pressure, and is fixed to the vehicle body over the upper surface side of the apron portion of the vehicle and the tire house portion. Since the bracket is formed in a substantially L shape, one end portion of the bracket protrudes from the upper side of the tire house portion to the engine side, and a tank of engine cooling water is fixed to the protruding portion. With the brackets attached to the apron part and the tire house part, the tank for storing the cooling water can be firmly attached. Since the valve bracket is installed on the upper side of the tire house, a negative pressure switching valve is installed at a high place in the engine room, preventing water from splashing on the air inlet (valve filter) of the negative pressure switching valve. it can. A tank can be installed at a high place in the vicinity of the engine, and the gas of the cooling water accumulates upward, so that air gathers in the tank and the degassing of the cooling water can be easily performed.
In the above invention, the negative pressure switching valve is mounted on the vehicle, and a regulator valve is disposed in front of the negative pressure switching valve so that the valve valve of the negative pressure switching valve is covered by the regulator valve. It is possible to prevent water from splashing on the air inlet (valve filter) of the switching valve.
In the above invention, the bracket projecting from the upper side of the tire house part to the engine side is connected to the projecting part on the negative pressure switching valve side, and the piping locking part arranged from the engine room side is provided. Formed. Piping pipes, electrical equipment wire harnesses, and the like are disposed along the engine room wall. However, because other harnesses are routed on the engine room wall (tire house), the pipe ends cannot be fixed. Since the pipe end is fixed to the protruding portion of the valve bracket, it is easy to route away from the tire house, and vibration can be prevented to improve the durability of the pipe.
In the above invention, since the vacuum switch mounting portion is provided on the upper side of the negative pressure switching valve with respect to the vehicle, and the vacuum switch is disposed above the negative pressure switching valve, the negative pressure switching valve is provided by the mounting portion and the vacuum switch. (Valve) piping (tubes, hoses, etc.) can be protected and piping can be shortened. The vacuum switch can be placed at a high place, and water can be prevented from splashing into the air inlet.
In order to achieve the above object, the valve bracket of the present invention is a bracket for fixing a negative pressure switching valve for switching a connection state between a vehicle drive unit and a wheel by air pressure to the vehicle, and the bracket is abbreviated as an apron. A first bracket formed in a substantially L shape with a parallel apron parallel portion and a tire house parallel portion substantially parallel to the upper surface of the tire house, and both sides of the L shape portion of the first bracket having a fixing portion to the apron A second bracket having a connecting portion for connecting the member diagonally and a fixing portion to the tire house, and a third bracket for connecting the connecting portion of the second bracket and the apron parallel portion of the first bracket to fix the negative pressure switching valve. The second bracket protrudes from the upper part of the tire house to the engine side, and the engine cooling water tank is fixed to the protruding part. Bracket a rigid which can fix a click can be formed. Since the valve bracket can be approached to the vicinity of the degassing tank arranged at a high place, the coupling strength between the tank bracket and the valve bracket can be easily satisfied.

Hereinafter, an assembly structure of a valve bracket and its valve bracket according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an engine room 1 of an automobile, FIG. 2 is a perspective view of a mounting portion of a degassing tank disposed in the engine room, and FIG. 3 is an exploded perspective view thereof.
As shown in FIG. 1, in an engine room 1 of a diesel vehicle, an apron part 2 is formed on a side part of the engine room 1, covers the periphery of the tire adjacent to the apron part 2, and the engine room 1 extends from the apron part 2. A tire house portion 3 protruding to the side is formed. And the valve bracket 4 is provided in the upper surface of the part which the tire house part 3 protruded.

  The valve bracket 4 has a regulator valve 5 connected to a vacuum pump 35 for obtaining a negative pressure, and a lock hub of a four-wheel drive is switched on and off to switch between lock and unlock of a drive wheel and a wheel. Actuating valves 6a and 6b for the air locking hub to be performed (hereinafter referred to as negative pressure switching valves, and collectively referred to as negative pressure switching valves 6), whether the wheel is in a locked or unlocked state with respect to the drive unit A vacuum switch 7 for informing the display side of the indicator and a degassing tank 8 for storing cooling water are attached.

  4 to 6 are a side view, a front view, and a plan view of the bubble bracket 4. The valve bracket 4 is composed of a base metal fitting 9 that is metallic, and four metal fittings, an A metal fitting 10, a B metal fitting 11, and a C metal fitting 12 that are attached to the base metal fitting 9. The base metal fitting 9 is formed in an L-shape and has two surfaces, an upright portion 9a and a horizontal portion 9b. One upright portion 9a has an upper portion that is substantially fan-shaped as shown in FIG. Insertion holes 9c and 9d for bolts 13 are formed in the front-rear direction with respect to the vehicle body. The other horizontal portion 9b has a tip projecting toward the engine side, and has downward flanges 9e and 9f on both the left and right sides (front and rear with respect to the vehicle body). The arrow F in the figure indicates the front of the vehicle body.

  In the A metal fitting 10, the base mounting portion 10 a is overlapped on the surface of the horizontal portion 9 b of the base metal fitting 9 and fixed by spot welding, and the tip of the A metal fitting 10 is directed to the engine side beyond the tire house portion 3. . An insertion hole 10c for a bolt 13 is formed in the base mounting portion 10a, and welding nuts 10d serving as mounting portions for the degassing tank 8 are fixed at three locations on the lower surface side of the base mounting portion 10a. In addition, a triangular tongue piece 10e is integrally formed on the side of the base mounting portion 10a, and a rectangular tongue piece 10f is integrally formed on the center side. The triangular tongue 10e is provided with a bolt shaft 10g facing upward, and the bolt shaft 10g locks the clamp member 14 (see FIG. 2). The rectangular tongue 10 f is formed with a long hole 10 h through which the bolt 13 is inserted, and is fastened to the tire house portion 3 by the bolt 13. The base end side of the A metal fitting 10 forms a suspension portion 10b connecting the upright portion 9a and the horizontal portion 9b of the base metal fitting 9 and an attachment piece 10i fixed to the upright portion 9a, and is fixed by spot welding.

  As shown in FIG. 5, the B metal fitting 11 has a substantially box shape, and is formed from the lower end of the front plate 11a, the rear plate 11b, the upper plate 11c connecting these front and rear plates 11a, 11b, and the front and rear plates 11a, 11b. Inclined plates 11e and 11f formed toward the inside of the metal fitting 11 are provided. The rear plate 11b extends in the vertical direction, and forms an attachment hole 11d for a terminal 15 (see FIG. 2) connected to the vacuum switch 7 at an upper end protruding upward from the upper plate 11c. The front plate 11a also extends in the vertical direction, and two insertion holes 11g of the regulator valve 5 are formed on the lower end side. A welding nut 11h is formed on the inner surface side of the front plate 11a so as to correspond to each of the insertion holes 11g. It is fixed. The upper plate 11c extends in the horizontal direction, and is inserted into the insertion hole 11i of the bolt 13 as the attachment portion of the negative pressure switching valve 6 and on the lower surface side of the upper plate 11c in correspondence with the position of the insertion hole 11i. A welding nut 11j for fastening the bolt 13 is fixed. A flange piece 11k protruding upward is formed on the upper plate 11c of the B metal fitting 11, and the flange piece 11k is attached to the horizontal portion 9b of the base metal fitting 9 by spot welding.

  The C metal fitting 12 has an inverted L shape, the long plate 12a on one end side is fixed to the horizontal portion of the base metal fitting 9 by spot welding, and the short plate 12b on the other end side is fixed to the engine side from the upper end portion of the long plate 12a. It protrudes in the horizontal direction. In the short plate 12b, a welding nut 12d is fixed to the lower surface side of the short plate 12b in correspondence with the insertion hole 12c of the bolt 13 for mounting the vacuum switch 7 and the position of the insertion hole 12c.

As shown in FIG. 2 and FIG. 3, the negative pressure switching valve 6 is attached to the upper plate 11 c of the B metal fitting 11 through the mounting plate 16 to which the pair of negative pressure switching valves 6 are attached. It is attached with a bolt 13. Further, the regulator valve 5 is attached to the rear plate 11 b of the B metal fitting 11 by a bolt 13 via a mounting bracket 17 to which the regulator valve 5 is attached. Then, the vacuum switch 7 is attached to the short plate 12b of the C metal fitting 12 by a bolt 13 via an attachment stay 18 to which the vacuum switch 7 is attached.
The negative pressure switching valve 6 is disposed between the front and rear face plates 11 a and 11 b in terms of position, and a regulator valve 5 is further disposed on the front side of the negative pressure switching valve 6. Therefore, it is possible to prevent water or the like from entering the valve filters 6c and 6d (see FIG. 3), which are the air inlets, during traveling of the vehicle.

  FIG. 7 shows the attachment state of the degassing tank 8 as seen from the rear of the vehicle body, and FIG. 8 shows the attachment state as seen from the engine room 1 side. The degassing tank 8 includes a tank 27 and a tank bracket 28, and mounting pieces 27a and 27b (see FIG. 2) are provided around the degassing tank 8, and the mounting pieces 27a and 27b are interposed therebetween. The tank 27 is attached to welding nuts 28 a and 28 b fixed to the tank bracket 28. As shown in FIG. 9, the bottom plate of the tank bracket 28 has insertion holes 28a at three locations, and bolts 13 are respectively provided at locations corresponding to the welding nuts 10d provided in the A bracket 10 of the valve bracket 4. It is concluded through.

Next, the piping connection of the negative pressure circuit of each member attached to the valve bracket 4 will be briefly described with reference to FIGS.
The regulator valve 5 connected to the vacuum pump 35 (see FIG. 1) is connected to the three-way branch pipe 19 via a communication path formed by the tube 20a, the relay pipe 20b, and the tube 20c in the line D. The remaining branch pipes of the three-way branch pipe 19 are connected to the negative pressure switching valves 6a and 6b by tubes 21 and 22, respectively. Of the pair of negative pressure switching valves 6 a and 6 b, the switching valve 6 b is connected to the three-way branch pipe 24 by the tube 23, and one of the three-way branch pipes 24 is connected to the vacuum switch 7 by the tube 25. Further, the remaining branch pipe 24 of the three-way branch pipe 24 is connected to the tube 31 as shown in FIG. 2, and the other negative pressure switching valve 6 a is connected to the tube 32. These tubes 31 and 32 are connected to the ends of the pipes 33 and 34. These pipes 33 and 34 are supported by the clamp member 14, and the clamp member 14 is attached to the bolt shaft 10g (see FIG. 5). The pipes 33 and 34 are connected to the mounting portions 26 (only the right side is shown) of the left and right air locking hubs via the lines G and H shown in FIG.

  The negative pressure switching valve 6 is an electromagnetic valve and is electrically switched by the control means that detects the switching of the transfer lever. When the vehicle is switched from two-wheel drive to four-wheel drive, one of the negative pressure switching valves 6b is opened (the negative pressure switching valve 6a is closed), and the air is passed through the line E shown in FIG. The locking hub is locked by negative pressure, and the front wheels that have been in the free state are driven. In addition, when switching from four-wheel drive to two-wheel drive, the negative pressure switching valve 6a is opened (the negative pressure switching valve 6b is closed), and the negative pressure is applied to the air locking hub via the line F shown in FIG. Negative pressure in the direction opposite to that of the pressure switching valve 6b is supplied, the locked front wheel is brought into a free state, and the front wheel and the drive unit are separated.

  The vacuum switch 7 is supplied with negative pressure via the tube 25 when the negative pressure switching valve 6b is opened during four-wheel drive. In the vacuum switch 7, the switch is switched by supplying negative pressure, and the driver is notified by an indicator lamp or the like that the vehicle has shifted from two-wheel drive to four-wheel drive. At this time, if there is a defect such as a hole in the negative pressure circuit, the negative pressure is not supplied, the indicator is not lit, and the driver is notified that the two-wheel drive is not switched to the four-wheel drive. The switching mechanism of the air locking hub is described in detail in Patent Document 3 described above.

Next, the effect of the valve bracket of this embodiment will be described.
As shown in FIG. 7, the valve bracket 4 has a rectangular tongue piece 10 f of the A metal fitting 10 disposed on the upper surface 3 a of the tire house portion 3 at a substantially boundary portion with the side surface 3 b. Moreover, since the position of the reference surface of the base mounting portion 10a of the A metal fitting 10 is higher than the upper surface 3a of the tire house portion 3, the piping of the engine room 1 provided at the upper end portion of the side surface 3b of the tire house portion 3 It does not interfere with the arrangement of the wire harness 29. Further, as shown in FIG. 8, the position of the metal fitting 10 to which the degassing tank 8 is attached is arranged at a position higher than the upper surface 3 a of the tire house portion 3, and the vehicle body provided on the upper surface 3 a of the tire house portion 3. The box-shaped component 30a and the flat stay 30b are laid out so as not to obstruct the arrangement.

  A valve bracket 4 is disposed on the upper surface 3a of the tire house 3 and the negative pressure circuit parts for switching the air locking hub are concentrated on the valve bracket 4 to attach the regulator valve 5, the negative pressure switching valve 6 and the vacuum switch 7. In addition, the mounting or assembling workability of the tubes is improved. Furthermore, the length of the tubes can be shortened because they are mounted close to each other.

The overall L-shaped valve bracket 4 is fixed to the apron portion 2 and the tire house portion 3 so that the mounting rigidity is large, and a degassing tank storing cooling water, which is a heavy object, can be firmly attached. it can.
Since the position of the degassing tank 8 is disposed above the position of the upper surface 3a of the tire house 3, the gas mixed in the cooling water is disposed above the degassing tank 8 It collects in the tank 27 and can easily degas the cooling water.

  2 and 3, the valve bracket 4 includes a regulator valve 5, a negative pressure switching valve 6, a vacuum switch 7, and various tubes 20a, 20c, 21 to 23, 31, 32, a relay pipe 20b, and a three-way branch. Since the pipes 19 and 24 and the degassing tank 8 are assembled in advance, the valve bracket 4 can be assembled to the vehicle body, and the mounting work can be shortened. Further, when the valve bracket 4 is assembled to the vehicle body, in the apron portion 2, the insertion hole 9c of the bolt 13 formed in the upright portion 9a of the valve bracket 4 protrudes to the left and right outer sides (front-rear direction of the vehicle body). In the house portion 3, the rectangular tongue piece 10f protrudes toward the rear side of the vehicle body, so that the valve bracket 4 and the member attached thereto do not become an obstacle, and the assembly of the valve bracket 4 to the vehicle body is easy. .

  Although the embodiments of the present invention have been described above, the present invention is of course not limited thereto, and various modifications and changes can be made based on the technical idea of the present invention. For example, in the above-described embodiment, the description has been made on a diesel vehicle, but it is of course applicable to a gasoline vehicle. As for the negative pressure circuit, the negative pressure circuit of the air locking hub is assembled to the valve bracket, but the negative pressure switching valve used in the air conditioner or the like is replaced with the negative pressure switching valve of the air locking hub, or You may make it arrange | position with it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an assembly structure of a valve bracket according to an embodiment of the present invention and the entire valve bracket. It is a perspective view of the assembly | attachment part structure of the valve bracket of embodiment of this invention. It is a disassembled perspective view of the assembly | attachment part structure of the valve bracket of embodiment of this invention. FIG. 4 is a side view of the valve bracket shown in FIGS. 1 to 3 (viewed from the rear of the vehicle body). FIG. 4 is a front view of the valve bracket shown in FIGS. 1 to 3 (a view of an apron portion viewed from an engine room of a vehicle body). It is a top view of the valve bracket shown in FIGS. It is a side view of the state which attached the degassing tank to the valve bracket of FIG. It is a front view of the state which attached the degassing tank (it shows with a dashed-two dotted line) to the valve bracket of FIG. It is a top view of the tank bracket of the degassing tank of FIG. It is a side view which shows the attachment state of the conventional degassing tank. It is a side view which shows interference with the wire harness routed in the conventional degassing tank and an engine room. It is a front view which shows interference with the conventional degassing tank and the box-shaped structural member arrange | positioned in an engine room.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine room 2 Apron part 3 Tire house part 4 Valve bracket 5 Regulator valve 6 (6a, 6b) Negative pressure switching valve 6c, 6d Valve filter 7 Vacuum switch 8 Degassing tank 9 Base metal fitting 9a Upright part 9b Horizontal part 10 A Metal fitting 10b Suspension part 10g Bolt shaft 11 B metal fitting 12 C metal fitting 33, 34 Pipe

Claims (5)

A bracket provided with a negative pressure switching valve for switching the connection state of a vehicle drive unit and wheels by air pressure, and having a fixing portion to the vehicle body over the upper surface of the apron portion and the tire house portion of the vehicle, the bracket being substantially omitted An assembly member structure for a valve bracket, which is formed in an L shape, and has one end portion of the bracket projecting from the upper side of the tire house portion to the engine side, and a tank of engine cooling water fixed to the projecting portion. The regulator valve is disposed in front of the negative pressure switching valve in a state where the negative pressure switching valve is mounted on the vehicle, and the regulator valve covers the valve filter of the negative pressure switching valve. The assembly structure of the valve bracket described in 1. The bracket protruding from the upper side of the tire house portion toward the engine side is connected to the negative pressure switching valve side at the protruding portion, and a locking portion of a pipe routed from the engine room side is formed. The assembly structure of the valve bracket assembly according to claim 1. 2. The valve bracket assembly member according to claim 1, wherein a vacuum switch mounting portion is provided on an upper side of the negative pressure switching valve with respect to the vehicle, and a vacuum switch is disposed above the negative pressure switching valve. Construction. A bracket for fixing to a vehicle a negative pressure switching valve that switches a connection state between a vehicle drive unit and wheels by air pressure, and the bracket is substantially parallel to an apron parallel to the apron and a tire house substantially parallel to the upper surface of the tire house. A first bracket formed in a substantially L shape with a parallel portion and having a fixing portion to an apron, a connecting portion that obliquely connects both sides of the L-shaped portion of the first bracket, and a fixing portion to the tire house The second bracket has a third bracket for connecting the connecting portion of the second bracket and the apron parallel portion of the first bracket and fixing the negative pressure switching valve, and the second bracket is located on the engine side from above the tire house. This is a valve bracket that protrudes into the tank and has an engine coolant tank fixed to the protrusion.

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