JPH0622581Y2 - Truck wing opening and closing structure - Google Patents

Description

[Detailed Description of the Invention] "Industrial application field" The present invention relates to a so-called wing opening / closing structure of a truck with a wing body in which an opening / closing roof is provided on a cargo bed.

“Prior art” The conventional wing body opening / closing structure for a truck with a wing body is a power type that opens and closes the wing with a hydraulic cylinder or an electric shaft, and a gas damper (gas damper is
A cylinder with a high-pressure gas sealed is provided with an actuating rod that can move back and forth, and a high-pressure gas is used to extrude the actuating device to exert a pushing force on the actuating rod. is there. And, as shown in FIG. 3, the manually closed type is provided between the middle of the wing 1 and the luggage carrier frame 3 near the hinge point 7 of the wing 1,
When the gas damper 2 is attached and fixed, the wing 1'in the closed position shown in the figure is unlocked, and the lower edge of the wing 1'is pushed up by hand to start, the wing 1'is automatically pushed by the pushing force of the gas damper 2. When the lower edge of the wing 1 in the open position is lightly pulled down by the operation rope 8 or the like, the operating rod of the gas damper 2 is compressed by the dead weight of the wing 1 and its pulling force to the closed position. It has a structure that

[Problems to be Solved by the Invention] The above-mentioned conventional manual wing opening / closing structure is a fixed lower end fulcrum structure in which the mounting position of the gas damper 2 is empirically determined and the lower end fulcrum 5 is preliminarily fixed to the platform frame 3. In addition, since the shape and structure of the wing 1 are variously changed depending on the type of truck, forming material, etc., the output of the gas damper 2 is sufficient to smoothly open the wing 1 by the pushing force of the gas damper 2. There is a qualitativeness that has to be taken largely, for example, in a 2 ton truck, four gas dampers 2 with 100 kg output (pushing force) are delivered to a single wing 1 (on the front and rear sides of the luggage carrier frame,
A double structure is used to attach two of them. Although the opening force of the wing 1 is sufficiently secured, the manual pulling force at the time of closing becomes heavy and the closing operability is deteriorated, and the gas damper 2 There is a problem that the number of used cables increases and the output becomes excessive.

The present invention provides a new wing opening / closing structure that solves the above-mentioned drawbacks of the conventional structure.

"Means for solving the problems" The wing opening / closing structure of the present invention which achieves the above objects is "a fulcrum lower end fulcrum near the hinge fulcrum of the wing,
In a wing opening / closing structure of a truck in which a gas damper is mounted between upper fulcrums in the middle of the wings and the wing is opened by the pushing force of the gas damper, a mechanism for adjusting a distance between fulcrums with the hinge fulcrum is provided at the lower fulcrum. , The lower end fulcrum is a slidable fulcrum ".

"Operation" The wing structure of the present invention having the above structure is provided with the fulcrum distance adjusting mechanism between the hinge fulcrum of the wing and the lower end fulcrum of the gas damper. According to the above, the distance between the fulcrums can be optimally adjusted, the output of the gas damper can be efficiently utilized to perform the opening operation, and good closing operability can be secured.

Then, the output of the gas damper selected in advance can be optimized to prevent excessive output.

"Example" Hereinafter, it demonstrates in detail based on an Example. First, referring to FIG. 1 showing an embodiment of the present invention, a pair of blades are formed on a hinge fulcrum 7 of the carrier frame 3 (the center of the hinge that pivotally supports the ends of the wings 1A1B to the carrier frame 3). The wing 1A1B is mounted, and the gas damper 2 is mounted between the lower end fulcrum 5 of the luggage carrier frame 3 near the hinge fulcrum 7 and the upper end fulcrum 4 in the middle of the wing 1A1B. In the opening and closing structure of the wing 1A1B in which the closed posture is opened to the open posture shown by the solid line and the operation rope 8 is pulled down to close manually, the lower end fulcrum 5 of the gas damper 2 has a lower end fulcrum 5 and a hinge fulcrum 7. An inter-fulcrum distance adjustment mechanism 6 capable of adjusting the inter-distance L is provided, and the lower end fulcrum 5 is a slidable fulcrum.

More specifically, the fulcrum distance adjusting mechanism 6 of the present embodiment is a bracket 1 that is fixed to the luggage carrier frame 3 as shown in FIG. 1 (B).
2, an adjusting screw rod 9 is laterally installed, and both end portions are screwed into the support plate 10 of the bracket 12 and the adjusting screw rod 9
A lower end connecting portion 11 that connects the lower ends of the gas dampers 2 is integrally attached in the middle of the above. And the adjusting screw rod 9
When the is rotated, the lower end connecting portion 11 comes close to or away from the hinge fulcrum 7 of the wings 1A1B, and the lower end supporting point 5 of the gas damper 2 connected to the lower end connecting portion 11 and the wings 1A1B.
The distance L between the fulcrums between the hinge fulcrums 7 can be adjusted.

Then, when the wings 1A1B are attached, the adjusting screw rod 9 is operated to adjust the distance L between the fulcrums, and the "A: gas" is adjusted according to the opening / closing characteristics of the wings which are different depending on the vehicle type of the truck and the shape and material of the wings. Smooth opening operation of wing 1 by pushing force of damper 2 "and" B:
Select the optimum inter-fulcrum distance L that satisfies the two requirements of "manual light closing operation" and set the position of the lower end fulcrum 5.

According to the wing opening / closing structure of the present invention described above, the wing 1
When the wing is in the open position, see Fig. 1 (C) (D), wing 1
And _'component force W ₂ of _the' open pushing force W ₁ of the gas damper 2 which is an element of the moment M, the closing force of the wing 1, i.e. manually pulled force W ₁ as the compressive force of the gas damper 2 '
And the component force W ₂ ″ of the wing 1 can be freely selected while the wing 1 is opened and closed.

Therefore, the gas damper 2 is adjusted by the fulcrum distance adjusting mechanism 6.
Since it is possible to efficiently utilize the output of A, it is possible to prevent the waste of excessive output of the gas damper 2 as in the conventional structure, and to secure good operability of A and B. In the 2 ton truck to which the embodiment of FIG. 1 is applied, a single wing has a front side and a rear side of 100 kg.
From the conventional structure that requires two gas dampers 2 each having an extruding force, the gas dampers 2 each having an extruding force of 100 kg are reduced to one, and good operability of A and B can be obtained. I was able to.

Next, FIG. 2 shows an inter-fulcrum adjusting mechanism 6 according to another embodiment of the present invention. That is, the slide body 13 is fitted in the cylindrical body 16 fixed to the luggage carrier frame 3, and the slide body 13 is provided with the locking hole group 14 and the lower end connecting portion 11.
The lower end of the gas damper 2 is connected to the lower end connecting part 11 to form the lower end fulcrum 5, and the locking pin 15 is communicated with any one of the locking holes 14 and the cylindrical body 16 to adjust the position of the lower end connecting part 11. The distance L between the fulcrums is adjusted.

According to this embodiment, since the distance L between the fulcrums between the hinge fulcrum 7 of the wing 1 and the lower end fulcrum 5 of the gas damper 2 can be adjusted stepwise, an effect similar to that of the embodiment of FIG. 1 can be expected.

"Effect of the invention" As described above, the wing opening / closing structure of the present invention can efficiently and accurately utilize the output of the gas damper, so that it is possible to prevent the output of the gas damper from being wasted and to ensure smooth operation. It secures a wide wing opening performance and a good wing closing performance, and has the effect of contributing to the performance improvement of the truck with a wing body.

[Brief description of drawings]

FIG. 1: A wing opening / closing structure of one embodiment of the present invention,
(A) is a front view thereof, (B) is a perspective view of the fulcrum distance adjusting mechanism, (C) and (D) are component force diagrams showing acting force, and FIG. 2 is a fulcrum of another embodiment of the present invention. Perspective view showing the inter-distance adjusting mechanism, FIG. 3:
The conventional wing opening and closing structure is shown, (A) is a whole perspective view, (B)
Is a front view of main parts Main symbols: 1: wing, 2: gas damper, 3: loading frame, 4: upper fulcrum, 5: lower fulcrum, 6: distance adjustment mechanism between fulcrums, 7: hinge fulcrum, 8: operation rope , 9: adjusting screw rod, 10: support plate, 11: lower end connecting portion, 12: bracket

Claims (1)

[Scope of utility model registration request] 1. A wing opening / closing structure for a truck, in which a gas damper is mounted between a lower end fulcrum of a carrier frame near a hinge fulcrum of a wing and an upper fulcrum midway between the wings, and the wing is opened by the pushing force of the gas damper. A wing opening / closing structure for a truck, characterized in that a mechanism for adjusting a distance between fulcrums with respect to the hinge fulcrum is provided at the lower fulcrum, and the lower fulcrum is a slidable fulcrum.