JP3996463B2 - Valve protection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve protection structure.
[0002]
[Prior art]
A chassis frame in a large truck or the like is configured by connecting a plurality of longitudinal positions of left and right side rails in the vehicle width direction by cross members. Generally, the both side rails are grooves inward in the vehicle width direction. It is composed of a channel material that forms a shape.
[0003]
In the groove shape surrounded by the upper and lower flanges and the web of the side rail, a plurality of nylon tubes that constitute the pneumatic system of the brake operating air are routed along the side rail in the longitudinal direction of the vehicle. The valves of the pneumatic system are scattered at various positions in the longitudinal direction of the side rail.
[0004]
However, in such a scattered state, it is necessary to route a large number of nylon tubes while avoiding the valve in a limited space within the side rail groove shape. It is difficult to secure the space for the nylon tube.
[0005]
In addition, since each valve is equipped in the grooved shape of the side rail, it is equipped with snow in the grooved shape of the siderail in winter, and the exhaust port of the valve is blocked. There is also a concern that the metal part rusts due to splashes and snow accumulation from the road surface and the electric system is disconnected.
[0006]
Therefore, the present inventor is equipped with a valve storage box under the side rail, collects and stores the valve in the valve storage box, and ensures the valve from freezing and rust while simplifying the groove shape of the side rail. It came to devise a valve protection structure that can be protected.
[0007]
[Problems to be solved by the invention]
However, when the valve storage box is equipped under the side rail, it is necessary to draw the nylon tube routed in the groove shape of the side rail through the valve storage box in a watertight manner. Using a structure that penetrates one by one and waterproofs with grommets individually, when assembling the valve storage box under the side rail, it takes a lot of work to pull in each nylon tube, and workability is very high In addition, when checking and servicing each valve in the valve storage box, there was a problem that each nylon tube had to be removed one by one, resulting in poor maintainability.
[0008]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a valve protection structure with good assembly workability and maintainability.
[0009]
[Means for Solving the Problems]
The present invention is a valve protection structure equipped with a valve storage box below the side rail, and collecting and storing the valves of the pneumatic system routed along the side rail in the valve storage box, A plurality of air tubes that form a pneumatic system are bundled together, and watertightly drawn into the valve storage box via the bellows boots to be connected to each valve, and each air tube is attached and detached via a relay connector outside the valve storage box. It is characterized by being configured to obtain.
[0010]
Thus, in this way, a plurality of air tubes are bundled and drawn into the valve housing box through the bellows boots in a watertight manner, so that each air tube is penetrated one by one and individually. The troublesome work of waterproofing with grommets can be saved, and it is possible to easily perform the operation of drawing each air tube into the valve storage box.
[0011]
In addition, since each air tube can be attached and detached via a relay connector outside the valve housing box, the structure from this relay connector to the valve housing box is made into a subunit and completed in a separate line in advance. After that, it is only necessary to assemble the complete subunit on the side rail on the main line.
[0012]
Also, when inspecting and servicing each valve in the valve storage box, disconnect each air tube with the relay connector and remove the entire valve storage box from the side rail. Inspection and maintenance can be performed.
[0013]
If the sub-units from the relay connector to the valve storage box are made common to various vehicles having different wheel bases, it is possible to significantly reduce the cost by minimizing the types of components.
[0014]
Furthermore, in the present invention, the bellows boot has a structure in which a short cylindrical portion provided on one end side of the bellows portion is fitted and attached to the opening of the valve storage box. A hooking claw that hooks to the inner peripheral edge of the opening is formed at a plurality of locations in the circumferential direction, and is closely attached to the outer peripheral edge of the opening when fitted to the entire circumference on the proximal end side of the short cylindrical portion. It is preferable that a flange portion is formed.
[0015]
In this way, the hooking claw is hooked to the inner peripheral edge of the opening by simply inserting the short tube portion of the bellows boot into the opening of the valve storage box, and at the same time, the flange portion is the outer peripheral edge of the opening. Since the water tightness is maintained by being in close contact with the accordion, the bellows boot can be easily attached with one touch.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0017]
1 to 5 show an example of an embodiment of the present invention. In the valve protection structure of this embodiment, as shown in FIG. 1, a side rail 1 (one side) having a groove shape toward the inner side in the vehicle width direction is shown. The valve storage box 2 is arranged immediately below the side rail (only the side rail is shown), and the valve storage box 2 is supported via a support 3 mounted on the outer side surface of the side rail 1 in the vehicle width direction. Yes.
[0018]
As shown in FIG. 2, a valve 4 of a pneumatic system that is routed in a groove shape surrounded by the upper and lower flanges 1a and 1b of the side rail 1 and the web 1c is provided inside the valve storage box 2. Further, as shown in FIG. 3, a plurality of nylon tubes 5 (air tubes) forming a pneumatic system are bundled and drawn into the valve housing box 2 through the bellows boots 6 in a watertight manner. Each drawn nylon tube 5 is connected to each valve 4.
[0019]
Here, the bellows boot 6 through which the bundle of nylon tubes 5 is passed is attached to the opening 7 formed on the upper surface of the valve storage box 2 of FIGS. 1 and 2. The water tightness at the location where the valve tube 2 penetrates the valve housing box 2 and the avoidance of contact of the nylon tube 5 with the edge portion of the periphery of the opening 7 are simultaneously achieved.
[0020]
More specifically, as shown in FIGS. 4 and 5, a resin short tube portion 9 in which the bellows boot 6 is attached to the lower end side of the rubber bellows portion 8 is fitted into the opening portion 7 of the valve housing box 2. A latch that latches on the inner peripheral edge of the opening 7 when fitted to a plurality of circumferential positions (four in the illustrated example) on the distal end side of the short cylindrical portion 9. A claw 10 is formed, and a flange portion 11 that is in close contact with the outer peripheral edge portion of the opening portion 7 when fitted is formed on the entire circumference on the proximal end side of the short tube portion 9, and the flange portion 11 includes the bellows 11. The lower end portion of the portion 8 is covered.
[0021]
When passing the bundle of nylon tubes 5 through the bellows boot 6, a plurality of nylon tubes 5 are tightly bundled by a corrugated tube 12, and the upper end of the corrugated tube 12 is taped 13 to form the bellows boot 6. The upper end of the corrugated tube 12 is fitted into the throttle port 14 in a watertight manner in accordance with the diameter of the throttle port 14 on the upper side of the bellows part 8.
[0022]
Further, as shown in FIG. 3, each nylon tube 5 is structured to be detachable via a relay connector 15 at a position relatively close to the bellows boot 6 outside the valve housing box 2. .
[0023]
Moreover, in the example shown here, the valve storage box 2 has an obliquely divided structure, and more specifically, the inner side surface and the bottom surface in the vehicle width direction, and the lower majority of both side surfaces adjacent to them. Are divided into a lower cover 16 and an upper cover 17 which is divided so as to include an outer side surface and an upper surface in the vehicle width direction, and upper remaining portions on both side surfaces adjacent thereto.
[0024]
Here, each valve 4 housed in the valve housing box 2 is carried by a flat bracket 18, and the bracket 18 is attached to the lower portion of the support 3 together with the upper cover 17. Fastened with screws, bolts and nuts.
[0025]
In addition, although the connection part of the upper cover 17 and the lower cover 16 is simplified and illustrated in order to make the drawing easy to understand, the connection part has a required overlap allowance. In the state where they are stacked, they are fastened with screws, bolts, nuts, etc. so as to be integrated.
[0026]
Thus, if the valve protection structure is configured in this manner, a plurality of nylon tubes 5 are bundled and then drawn into the valve housing box 2 through the bellows boots 6 in a watertight manner. The troublesome work of penetrating the tubes one by one and individually waterproofing them with grommets can be saved, and the operation of pulling each nylon tube 5 into the valve housing box 2 can be easily performed.
[0027]
Moreover, since each nylon tube 5 can be attached and detached outside the valve housing box 2 via the relay connector 15, the structure extending from the relay connector 15 to the valve housing box 2 is made into a sub-unit in advance on a separate line. The completed subunit can be assembled to the side rail 1 on the main line.
[0028]
Therefore, according to the above-described embodiment, the operation of pulling each nylon tube 5 into the valve housing box 2 can be easily performed, and the structure from the relay connector 15 to the valve housing box 2 is divided into subunits. Since the work completed in the line can be completed simply by assembling the entire product on the side rail 1 on the main line, the workability of assembling the valve housing box 2 can be greatly improved.
[0029]
Also, when inspecting and servicing each valve 4 in the valve storage box 2, the nylon tube 5 can be separated by the relay connector 15 and the valve storage box 2 can be completely removed from the side rail 1, so that workability is good. Inspection and maintenance of each valve 4 in the valve storage box 2 can be easily and reliably performed at a place.
[0030]
Furthermore, if the sub-units from the relay connector 15 to the valve storage box 2 are made common to various vehicles having different wheel bases (distance between the front wheel axle and the rear wheel axle), the types of parts are minimized. The cost can be significantly reduced.
[0031]
Further, particularly in the present embodiment, the hooking claw 10 is hooked on the inner peripheral edge of the opening 7 just by inserting the short tube portion 9 of the bellows boot 6 into the opening 7 of the valve housing box 2, and at the same time the flange Since the portion 11 is in close contact with the outer peripheral edge of the opening 7 to maintain watertightness, the bellows boot 6 can be easily attached with one touch.
[0032]
Note that the valve protection structure of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
[0033]
【The invention's effect】
According to the valve protection structure of the present invention described above, various excellent effects as described below can be obtained.
[0034]
(I) According to the invention described in claim 1 of the present invention, the operation of drawing each air tube into the valve storage box can be easily performed, and the structure from the relay connector to the valve storage box is sub-structured. Since it is possible to finish the work by simply assembling the whole unit and completing it on a separate line on the side rail on the main line, it is possible to greatly improve the assembling workability of the valve storage box.
[0035]
(II) According to the invention described in claim 1 of the present invention, when checking and servicing each valve in the valve housing box, the air tube is disconnected by the relay connector and the valve housing box is removed from the side rail. Therefore, inspection and maintenance of each valve in the valve storage box can be easily and reliably performed at a place with good workability.
[0036]
(III) According to the invention described in claim 1 of the present invention, if the sub-units from the relay connector to the valve housing box are made common to various vehicles having different wheel bases, the types of parts can be minimized. Drastic cost reduction.
[0037]
(IV) According to the invention described in claim 2 of the present invention, the hooking claw is hooked on the inner peripheral edge of the opening by simply inserting the short tube portion of the bellows boot into the opening of the valve storage box, At the same time, the flange portion is brought into close contact with the outer peripheral edge portion of the opening so that the watertightness is maintained, so that the bellows boot can be easily attached with one touch.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an embodiment for carrying out the present invention.
FIG. 2 is an exploded perspective view showing components of FIG.
FIG. 3 is a side view of the valve storage box of FIG. 1 as viewed from the inside in the vehicle width direction.
4 is a cross-sectional view showing details of the bellows boot of FIG. 3;
5 is a side view showing details of a bundle of nylon tubes that are passed through the bellows boot of FIG. 4. FIG.
[Explanation of symbols]
1 Side rail 2 Valve housing box 4 Valve 5 Nylon tube (Air tube: Pneumatic system)
6 Bellows Boot 7 Opening 8 Bellows 9 Short Cylinder 10 Hook Claw 11 Flange 15 Relay Connector

Claims (2)

A valve protection structure equipped with a valve storage box under the side rail, and collecting and storing the valves of the pneumatic system routed along the side rail in the valve storage box. A plurality of air tubes are bundled together and drawn into a valve housing box through a bellows boots in a watertight manner to be connected to each valve, and each air tube can be attached / detached via a relay connector outside the valve housing box A valve protection structure characterized by that. The bellows boot has a structure in which a short cylinder part provided on one end side of the bellows part is fitted to the opening of the valve storage box, and is fitted to a plurality of circumferential positions on the tip side of the short cylinder part. Sometimes a hooking claw that hooks to the inner peripheral edge of the opening is formed, and a flange portion that is in close contact with the outer peripheral edge of the opening is formed on the entire circumference of the proximal end side of the short cylindrical portion. The valve protection structure according to claim 1, wherein:

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