JPH0848182A - Pivotably supporting structure of door in hose storing box of tank lorry - Google Patents

Abstract

PURPOSE:To prevent a pivotably supporting part for openably/closably and pivotably supporting a door of a hose storing box of a tank lorry from getting into unsmooth operation with dust. CONSTITUTION:A door 7 is pivotably supported on a storing box body 9 of a hose storing box 6 through a connecting member. An arc-shaped groove part 22 formed in the door 7 and an arc-shaped groove part 23 formed in the storing box body 9 are slidably engaged with a pair of arc-shaped arm parts 24 formed in the connecting member 12. The dust invaded in the sliding surface between the arc-shaped groove parts 22, 23 and the arc-shaped arm part 24 is discharged to recessed parts 77, 97 provided in the tip of the arc-shaped groove parts 23, 24 and the smooth operation of the door 7 is secured thereby.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention covers a storage box main body which is provided on a side portion of a tank mounted on a vehicle body along the longitudinal direction of the vehicle body and stores a hose therein, and a side opening of the storage box main body. The present invention relates to a hose storage box for a tank truck provided with a door and a pivoting means for rotatably pivoting the door to a main body of the storage box, and more particularly, to an improvement of a pivotal support structure of the door.

[0002]

2. Description of the Related Art A hose storage box for such a tank truck is
It has already been proposed by the applicant in Japanese Patent Application No. 6-166743. The pivot structure of the door is such that the storage box body and the door are rotatably supported by arcuate arm portions and arcuate groove portions that slidably engage with each other, and the door body is enclosed. On the other hand, the door can be easily replaced by sliding it in the longitudinal direction.

[0003]

By the way, in the above-mentioned conventional pivot structure of the door, when dust adheres to the sliding surface of the arcuate groove, the dust is pushed into the tip of the arcuate groove by the arcuate arm. It may accumulate, and as a result, the door may not be opened and closed smoothly.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent a door from being opened and closed improperly due to adhesion of dust.

[0005]

In order to achieve the above object, the present invention relates to a storage box main body which is provided on a side portion of a tank mounted on a vehicle body along the longitudinal direction of the vehicle body and stores a hose therein. In a hose storage box for a tank truck provided with a door covering a side opening of the storage box main body and a pivot support means for pivotally supporting the door on the storage box main body, the pivot support means are mutually slidable. Is provided with an arcuate arm and an arcuate groove, and a concave portion for collecting dust is formed at the tip of the arcuate groove.

[0006]

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

1 to 7 show a first embodiment of the present invention. FIG. 1 is an overall side view of a tank truck, FIG. 2 is an enlarged view of part 2 of FIG. 1, and FIG. 3 is 3-3 of FIG. 2 is an enlarged view of a part 4 in FIG. 3, FIG. 5 is an enlarged view in the direction of arrow 5 in FIG. 2, FIG. 6 is a sectional view taken along line 6-6 of FIG. 5, and FIG. is there.

As shown in FIG. 1, the tank truck T includes a cabin 3 and a tank 4 at the front and rear portions of a chassis 2 supported by a plurality of wheels 1. A hose storage box 6 is provided along the lower side surface of the tank 4 in order to store the hose 5 (see FIG. 3) used for discharging the liquid in the tank 4 by dividing it into a predetermined length. The hose storage box 6 is divided into three parts in the front-rear direction of the vehicle body, and each has three doors 7 that open to the side of the vehicle body
7 and 7 are provided. Each of the three doors 7, 7, 7 is made of an extruded aluminum material having a constant cross section along the longitudinal direction of the vehicle body and has substantially the same structure, but the front door 7 is the central door 7 and the rear door 7. The front-rear direction length of the vehicle body is shorter than that of the side door 7.

Next, the structure of the hose storage box 6 will be described with reference to FIGS.

A plurality of brackets 8 ... Are welded to appropriate positions on the outer wall of the tank 4, and a storage box body 9 made of aluminum extruded material is fixed to the brackets 8 ... with bolts 10. The storage box main body 9 has a substantially U-shaped cross section that is constant along the front-rear direction of the vehicle body, and an opening that opens toward the outside of the vehicle body is openably and closably covered by the door 7.

As is apparent from FIG. 4, a pivot mechanism 11 for pivotally supporting the lower edge of the door 7 to the lower edge of the storage box body 9 is a connecting member made of an aluminum extruded material having a constant cross section along the longitudinal direction of the vehicle body. The lower edge of the door 7 is pivotally supported by the lower edge of the storage box main body 9 via the connecting member 12.

That is, the sectional shape of the lower edge of the door 7 is such that the bearing portion 7
₁ and the outward guide surfaces 7 ₂ and 7 ₆ and the inward guide surface 7 ₃ each having a partial arc shape centering on the bearing portion 7 ₁ . Between the bearing portion ₇₁ and the outward guide surface 7 ₂ first stop surface 7 ₄ are formed, also has a second stopper surface 7 ₅ between the bearing portion ₇₁ and the outward guide surface 7 ₆ It is formed.
The outward outward guide surface 7 ₆ and the inward guide surface 7 ₃
The arc-shaped groove 22 around the bearing portion ₇₁ is formed.

[0013] cross-sectional shape of the lower edge of the storage box main body 9 is vertically symmetrical with the cross-sectional shape of the lower edge of the door 7 with respect to the horizontal line L, the bearing portion 9 _1, the outward guide surface 9 ₂ inward guide Surface 9 ₃ , first stopper surface 9 ₄ , second stopper surface 9 ₅ ,
Comprises an outward guide surface 9 ₆ and arcuate groove portion 23.

The sectional shape of the connecting member 12 is also the line L.
Bearings of the door 7 and the storage box body 9 are vertically symmetrical with respect to each other.
7₁, 9₁Two shaft parts 12 rotatably fitted to₁, 1
2₁And the outward guide surface 7 of the door 7 and the storage box body 9₂,
9₂Two inward guide surfaces 12 in the shape of partial arcs that are in sliding contact with
₂, 12₂And inward guide surfaces of the door 7 and the storage box body 9
7₃, 9₃Guides of two partial arcs that slide on the
Face 12₃, 12₃And the door 7 and the storage box body 9 facing outward.
Id surface 7₆, 9₆Inward with two partial arcs that slide on
Guide surface 12₆, 12₆And the outward guide surface 12₃, 1
2₃And inward guide surface 12₆, 12₆2 pieces sandwiched between
Arc-shaped arm portions 24, 24 of the door 7 and the storage box main body 9
1 Stopper surface 7_Four, 9_FourTwo first stoppers that can contact the
Surface 12 _Four, 12_FourAnd the second door of the door 7 and the storage box body 9
Topper surface 7_Five, 9_Five2nd stopper surfaces that can contact the
12_Five, 12_FiveWith.

The upper arcuate arm portion 24 of the connecting member 12 slidably engages with the arcuate groove portion 22 of the door 7, and the connecting member 12
The lower arcuate arm portion 24 is the arcuate groove portion 2 of the storage box body 9.
3 is slidably engaged. With the door 7 closed, the tip ends of the pair of arcuate arm portions 24, 24 of the connecting member 12 contact the tip ends of the arcuate groove portions 22, 23 of the door 7 and the storage box body 9. Then, the arcuate groove portions 22 of the door 7 and the storage box main body 9,
Recesses 7 ₇ and 9 ₇ for accumulating dust are formed near the tip of 23, respectively. The recesses 7 ₇ , 9 ₇ are fitted with the tips of the pair of arcuate arm portions 24, 24 of the connecting member 12 so that the door 7 is closed.
In order not to lock the opening and closing of, the arcuate groove portions 22 and 23 are formed so as to be biased outward from the tips.

As is apparent from FIGS. 2 and 3, each door 7
The upper edges are locked to the upper edges of the storage box body 9 by the two lock mechanisms 13 and 13, respectively, so that the door 7 is held in the closed position. The lock mechanism 13 includes a bracket 14 that covers the back surface of the circular hole 7 _{6 formed in} the door 7, and a spring 15 that is supported on the back surface of the bracket 14 so as to be vertically slidable.
The locking member 16 is urged upwardly by a bracket 18 and a handle 18 pivotally supported by a pin 17 on the surface of the bracket 14. The locking portion 16 ₁ provided on the upper end of the locking member 16 is provided in the storage box body 9
The locked portion 9 ₆ guide portion 16 ₂ which is capable of abutting inclined is formed on the rear surface of the upper engageable in locked portion 9 ₆ depending from the edge, and the locking member 16 of the . Also, handle 1
The upper end of the 8 and the pressing portion 18 ₁ are provided, the pressed portion 16 ₃ is provided in the locking member 16 abuts on the pressing portion 18 _1.

As is apparent from FIGS. 5 and 6, the front and rear openings of the storage box body 9 are covered with end covers 19 and 19, respectively. Each end cover 19 is provided with a flange 19 ₁ that projects inward and fits into the inner surface of the storage box body 9. The two welding nuts 20 and 20 provided on the inner surface of the flange 19 ₁ connect the end cover 19 to the storage box body. By screwing two bolts 21 and 21 penetrating 9 and the flange 19 ₁ ,
The end cover 19 is detachably fixed to the storage box body 9.

Next, the operation of the embodiment of the present invention having the above construction will be described.

When the handle 18 of the lock mechanism 13 is swung around the pin 17 in the direction of arrow a in FIG. 3 in order to move the hoses 5 into and out of the storage box body 9 of the hose storage box 6, the handle 1
When the pressing portion 18 ₁ provided at the upper end of 8 presses the pressed portion 16 ₃ , the locking member 16 descends against the spring 15, and the locking portion 16 ₁ is the locked portion of the storage box body 9. Leave from 9 ₆ . Therefore, when the handles 18, 18 are pulled toward you, the door 7 rotates downward around the pivot mechanism 11, and the side opening of the storage box body 9 is opened.

When the door 7 is rotated upward to be closed and pressed against the storage box body 9, the guide portion 16 ₂ is locked by the locked portion 9 _6.
The locking member 16 pressed against moves downward against the spring 15. As a result, the engaging portion 16 ₁ gets over the locked portion 9 ₆ engages the rear of該被locking portion 9 _6, thereby the door 7
Is locked in the closed position.

Now, when each door 7 is in the closed position shown in FIGS. 3 and 4, the door 7 and the second stopper surface 7 of the storage box body 9 are provided.
₅ and 9 ₅ are in contact with the two second stopper surfaces 12 ₅ and 12 ₅ of the connecting member 12, respectively. Door 7 from this state
3 is rotated in the direction of the arrow b in FIG. 3, the outward guide surfaces 7 ₂ and 7 ₆ and the inward guide surface 7 ₃ are respectively arranged on the upper inward guide surfaces 12 ₂ and 12 ₆ and the outer guide surface of the connecting member 12. by sliding along the direction guide surface 12 _3, door 7
The first stopper surface 7 ₄ comes into contact with the first stopper surface 12 ₄ of the connecting member 12 by about 100 ° to the position shown in FIG. 7A.
Rotate over.

When the door 7 is further rotated in the direction of the arrow b, the outward guide surfaces 12 ₃ and the inward guide surfaces 12 ₂ and 12 ₆ on the lower side of the connecting member 12 are respectively moved to the storage box main body 9 this time.
By sliding along the outward guide surfaces 9 ₂ and 9 ₆ and the inward guide surface 9 ₃ of the connecting member 12, the first stopper surface 12 ₄ of the connecting member 12 becomes the first stopper surface 9 ₄ of the storage box body 9. It can be rotated about 100 ° to the abutting position. Therefore, the door 7 can be opened and closed with respect to the storage box main body 9 within a range of 0 ° to about 200 °. Since the door 7 in the open position hangs vertically downward due to gravity, the door 7 shown in FIG.
In the free state, the rotation angle of the door 7 is 1 from the closed position as shown in FIG.
It becomes 80 °.

When the door 7 is opened and closed as described above, the arcuate groove portions 22 and 23 of the door 7 and the storage box main body 9 and the pair of arcuate arm portions 24 and 2 of the connecting member 12 are for some reason.
Even if dust enters the sliding part with 4,
Since it is discharged into the recesses 7 ₇ and 9 _{7 that} are continuously provided at the tips of the doors 2 and 23, smooth opening and closing of the door 7 is not hindered.

To remove the door 7 from the storage box main body 9 for replacement, first, the bolts 21 are loosened to separate the front and rear end covers 19, 19 from the storage box main body 9. In this state, the door 7 can be removed from the storage box body 9 by pulling the door 7 forward or backward of the connecting member 12. When it is necessary to replace the connecting member 12, the connecting member 12 may be pulled out to the front or rear of the vehicle body with respect to the storage box body 9 either integrally with the door 7 or after removing the door 7.

The new doors 7 and the connecting members 12 can be attached in the reverse order of the above-described removal. If there is no space for pulling out the doors 7 ... In front of the hose storage box 6, it is sufficient to pull out all the doors 7 ...

As described above, the door 7 of the hose storage box 6 ...
Is pivotally supported without using a bolted hinge, and at the time of replacement, it is only necessary to pull out from the storage box main body 9 in the front-rear direction, so workability is extremely good. Moreover, the pivot mechanism 11
Has no protrusions such as bolts, so there is no risk of damaging the hoses 5. Further, since the pivotal support mechanism 11 is adapted to rotate the doors 7 ... In two steps via the connecting member 12, it is possible to secure a sufficient rotation angle of the doors 7 ... Can be done.

FIG. 8 shows a second embodiment of the present invention.

In this embodiment, a bellows-like cover 25 made of a flexible material is formed between the inner surface of the door 7 and the bottom surface of the storage box body 9 in order to cover the pivot mechanism 11 and prevent dust from adhering thereto. Are attached with a plurality of bolts 26 .... By providing the cover 25 in this way, it is possible to more reliably prevent defective opening and closing of the door due to dust.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made.

For example, in the embodiment, the door 7 and the storage box body 9 are
Although both a recess 7 _7, 9 _7, the recess 7 ₇ only one of the, 9 ₇ may be provided. Further, in the embodiment, the connecting members 12 ... Are interposed between the door 7 ... And the storage box main body 9, but the door 7 may be directly pivotally supported on the storage box main body 9.
Further, in the embodiment, the doors 7 ... Are divided into three pieces, but the number of divided pieces can be appropriately changed. Further, in the embodiment, the door 7
The storage box main body 9 and the connecting member 12 are all made of aluminum extruded material, but can be changed to other materials or manufacturing methods. Further, the pivotal support mechanism 11 does not necessarily have to be vertically symmetrical with respect to the line L, and the rotation angle between the doors 7 ... And the connection members 12 ... And the rotation angle between the connection members 12 ... And may be different.

[0031]

As described above, according to the present invention, the pivotal support means for pivotally supporting the door and the storage box body are provided with the arcuate arm portion and the arcuate groove portion slidably engaged with each other. In addition, since a concave portion for accumulating dust is formed at the tip of the arcuate groove, even if dust enters between the arcuate arm and the arcuate groove, the dust is discharged into the concave portion and the door is smooth. The opening and closing can be secured.

[Brief description of drawings]

1] Overall side view of the tank truck

FIG. 2 is an enlarged view of part 2 of FIG.

3 is an enlarged sectional view taken along line 3-3 of FIG.

4 is an enlarged view of part 4 of FIG.

FIG. 5 is an enlarged view in the five directions of FIG.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is an explanatory diagram of operation

FIG. 8 is a diagram corresponding to FIG. 4 according to a second embodiment of the present invention.

[Explanation of symbols]

4 Tank 5 Hose 7 Door 7 ₇ Recess 9 Recess Box Main Body 9 ₇ Recess 11 Pivot Mechanism (Pivot Support Means) 22 Arc-Shaped Groove 23 Arc-Shaped Groove 24 Arc-Shaped Arm

Claims (1)

[Claims] 1. A storage box main body (9) for storing a hose (5) inside a tank (4) mounted on the vehicle body along the longitudinal direction of the vehicle body, and the storage box main body (9). A hose storage box for a tank truck provided with a door (7) for covering the side opening of the storage box and a pivot support means (11) for pivotally supporting the door (7) on the storage box body (9). The support means (11) is provided with an arcuate arm portion (24) and an arcuate groove portion (22, 23) which are slidably engaged with each other, and dust is attached to the tips of the arcuate groove portions (22, 23). A pivot structure for a door in a hose storage box of a tank truck, characterized in that recesses (7 ₇ , 9 ₇ ) for storing are formed.