JPH0535480U - Luggage box canopy - Google Patents

Abstract

(57) [Summary] [Purpose] The sheet members are always stretched by applying appropriate tension.
This prevents the sheet member from sagging and eliminates the gap between the pair of left and right canopies to reliably maintain the sealed state. [Structure] A canopy 2 is provided with a frame main body 41, an overhanging frame 42 provided at the tip of the frame main body 41 so as to be able to overhang, and an overhanging direction for separating the overhanging frame 42 from the frame main body 41. An urging member 43 for urging, and a sheet member 5 extending from the front surface side of the frame body 41 against the urging force of the urging member 43 to cover the projecting frame 42 and stretched on the back surface side of the frame body 41. It consists of

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a canopy that prevents scattering of a load loaded in a packing box.

[0002]

[Prior Art]

 Conventionally, the canopy of a packing box is provided as a pair of left and right on a rotating shaft provided along the upper edges of the left and right side walls of the packing box, and the pair of left and right canopies are centered on the rotating shaft by an appropriate actuator. It is configured to have a closed position that opens and closes to close the top opening of the luggage box and an open position that opens the luggage box.

In the closed position, the canopy has the upper surface extending from the side door to the center in the width direction of the luggage box and substantially in the front-rear direction of the luggage box. It is composed of a frame formed in a rectangular shape so as to cover the opening, and a sheet member stretched over the front surface side and the back surface side of the frame.

[0004]

[Problems to be solved by the device]

 However, in the above conventional canopy, in order to remove the slack when the slack is generated in the seat member, the seat member is once detached from the frame and reattached, and then fixed to the frame with an appropriate fastening member again. There was a problem that it had to be done and it took time.

Further, due to backlash between the rotating shaft and the canopy, a gap may be formed between the front end portions of the left and right canopies arranged at the closed position, which makes it impossible to maintain the sealed state in the packing box. In addition, there was a problem that foreign matter was mixed in from the outside.

[0006]

[Means for Solving the Problems]

 A canopy of a luggage box according to the present invention is a canopy of a luggage box which is provided on a rotary shaft provided along upper and left edges of left and right side walls of the cargo box so as to be openable and closable about the rotary shaft by an actuator. The canopy includes a frame main body whose base end is rotatably supported by the rotary shaft, an overhanging frame provided at the tip of the frame main body so as to be able to extend, and the frame main body. A biasing member that is interposed between the projecting frames and biases the projecting frame away from the frame body in the projecting direction, and a projecting member from the surface side of the frame body against the biasing force of the biasing member. And a sheet member that covers the frame and is stretched on the back side of the frame body.

[0007]

[Action]

 Since the sheet member is stretched from the front surface side of the frame body against the biasing force of the biasing member so as to cover the projecting frame and to the back surface side of the frame body, the biasing force of this biasing member is increased. Acts in the direction of extension that separates the frame member from the frame body, whereby the sheet member is always stretched with appropriate tension.

Further, when the pair of left and right canopies are arranged in a substantially horizontal closed position that closes the opening of the upper surface of the packing box, the tips of the overhanging frames of the left and right canopies press each other by the biasing member. Abutting in a state of being urged in the direction to make the inside of the luggage box sealed.

[0009]

【Example】

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

FIG. 1 shows a canopy provided on a packing box.

In FIG. 1, reference numeral 1 denotes a luggage box mounted on a vehicle body (not shown) of a freight vehicle. A pair of left and right canopies 2 and 2 are provided on a side wall 1 a of the luggage box 1 by a canopy opening / closing device 10. It is provided so as to be openable and closable so as to have a closed position that closes the upper surface opening and an open position that opens the upper surface opening.

Rotation shafts 11 rotatably supported by bearings (not shown) are provided on upper portions of the left and right side walls 1 a of the luggage box 1. These left and right rotation shafts 11, 11 The base end of the canopy 2 is rotatably supported.

The canopy 2 has a rotating frame 3 whose base end is pivotally supported by the rotating shaft 11, and a main frame whose base end is rotatably supported by the tip of the rotating frame 3. 4, a seat member 5 stretched over the rotating frame 3 and the main frame 4, a base end portion of which is pivotally supported by the rotating shaft 11 via a bracket 7, and a rod end of which is a main member. It is composed of a canopy refracting cylinder 6 pivotally supported by an arm 8 at the base end of the frame 4.

The canopy 2 extends from the side wall 1a to the center of the luggage box 1 in the closed position shown by the solid line in FIG. It is arranged so as to cover the upper opening of the luggage box 1.

As shown in FIGS. 3 to 4, the main frame 4 has a main frame main body 41 whose base end is rotatably supported by the distal end of the rotary frame 3, and the main frame main body 41. And an overhanging frame 42 that is provided at the tip end of the overhanging frame 42, and an overhanging direction that is interposed between the main frame body 41 and the overhanging frame 42 and that separates the overhanging frame 42 from the main frame body 41. And a spring (biasing member) 43 for urging the

The main frame body 41 is composed of a plurality of vertical frames 41a and horizontal frames 41b and a reinforcing frame 41c, and the overhang frame 42 is composed of a plurality of vertical frames 42a and horizontal frames 42b. ing.

One end of a guide rod 44 is fixed to each vertical frame 42a of the overhang frame 42. The other end of each guide rod 44 is inserted through the horizontal frame 41b and protrudes outward, and the other end of the protrusion protrudes the horizontal frame 41b into the corresponding vertical frame 41a of the main frame body 41. It is inserted and slidably inserted.

The spring 43 is interposed in the vertical frame 41 a, and by biasing each of the guide rods 44 in the arrow P direction by the biasing force of the spring 43, the extension frame 42 is mainly moved. It is always biased in the direction of separating it from the frame body 41.

The seat member 5 is formed by winding the tip end portion of the overhanging frame 42 from the front surface side base end portion of the rotating frame 3 through the front surface side base end portion of the main frame main body 41 to the main frame. It is stretched on the rear end of the main body 41 on the back surface side, and both end edges are fastened by fastening members 51. Further, the sheet member 5 is also fastened by the fastening member 52 at the front surface side base end portion of the main frame main body 41, thereby eliminating the occurrence of bending and slack.

The seat member 5 is stretched so as to press the projecting frame 42 against the biasing force of the spring 43 toward the main frame main body 41 side, whereby the biasing force of the spring 43 is projected. It acts in a direction to separate the frame 42 from the main frame main body 41, so that appropriate tension is always applied to the sheet member 5. As a result, there is no slack in the sheet member 5, and there is no need to take slack as in the conventional case.

Reference numeral 45 shown in FIG. 3 is an auxiliary plate for closing a gap formed between the cargo box 1 and the cargo box 1.

In this example, four canopy refracting cylinders 2 are provided for each canopy 2 and 2, and the rotating frame 3 and the main frame 4 are formed in a substantially straight line by the degeneration of the rods. The main frame 4 is arranged so as to be bent with respect to the rotating frame 3 by the extension of the rod.

The pair of left and right canopies 2 and 2 configured as described above, when arranged in a substantially horizontal closed position that closes the opening of the upper surface of the packing box 1, extends from the left and right canopies 2 and 2. The tip ends of 42 abut against each other while being urged by springs 43 in a direction in which they are pressed against each other, a gap is not created between the tip ends of the overhang frames 42, 42, and the inside of the packing box 1 is sealed. Can be securely held.

Next, the canopy opening / closing device 10 will be described with reference to FIGS. 1 and 2.

A small-diameter gear 12 is integrally provided at one end portion on the front side of the rotating shafts 11 and 11, and a large-diameter gear 12 and a large-diameter gear 12 which is rotatably provided to the front portion of the luggage box 1 are provided. The radial gears 13, 13 are arranged in mesh with each other.

One large-diameter gear 13 (the large-diameter gear 13 on the right side in the illustrated example) is integrally provided with a vertically projecting link 14, and a canopy opening / closing cylinder is provided at one lower end of the link 14. The rod end of 15 is pivotally supported, and one end of the connecting rod 16 is pivotally supported at the upper end of the link 14.

The connecting rod 16 is arranged in the front part of the luggage box 1 and inclined in the width direction, and the other end of the connecting rod 16 is a link arm 17 integrally provided on the other large-diameter gear 13. Is pivoted to.

FIG. 5 shows a hydraulic circuit of the canopy opening / closing device 10.

In FIG. 5, P is a hydraulic pump, and the pressure oil supply side of the hydraulic pump P is connected to the canopy opening / closing cylinder 15 and each canopy bending cylinder 6 via a switching valve 21.

The switching valve 21 is switched from the positive position to the right position and the left position by exciting the solenoids SOL1 and SOL2, and the switching operation causes the canopy opening / closing cylinder 15 and each canopy bending cylinder 6 to expand and contract. ..

An accumulator 22 stores high-pressure oil, and is connected to the hydraulic pump P side via a valve 23 and to an oil reservoir 25 via a valve 24. The accumulator 22 is configured to store sufficient pressure oil for expanding and contracting the canopy opening / closing cylinder 15 and each canopy bending cylinder 6 when the hydraulic pump P fails.

Reference numeral 26 is a sequence valve, and 27 is a counter balance valve.

Next, the operation of the canopy opening / closing device 10 configured as described above will be described.

With the canopy 2 in the closed position as shown in FIG. 1, the solenoid SOL1 is excited by the operation of a switch or the like to switch the switching valve 21 to the right position, and the pressure oil of the hydraulic pump P is changed. Supply to the piston chambers of the canopy opening / closing cylinder 15 and each canopy bending cylinder 6.

As a result, each canopy bending cylinder 6 designed to operate with a lower hydraulic pressure than the canopy opening / closing cylinder 15 extends, and the main frame 4 portion of the canopy 2 is rotated upward, so that the rotation frame 3 is rotated. The main frame 4 is arranged in a bent state.

When the extension operation of each of the canopy bending cylinders 6 is completed, the canopy opening / closing cylinder 15 starts the extension operation this time. As the canopy opening / closing cylinder 15 extends, the link 14 provided on the one large diameter gear 13 is rotated counterclockwise in FIG. As a result, the left and right large-diameter gears 13 and 13 connected to each other via the connecting rod 16 and the link arm 17 are tuned counterclockwise with respect to the right-side large-diameter gear 13 and clockwise. Rotate. As the left and right large-diameter gears 13, 13 rotate, the small-diameter gears 12, 12 are rotated, whereby the canopies 2, 2 in the bent state are rotated to the left and right sides of the packing box 1 and the main frame 4 is It is arranged in an open position that is substantially parallel to the side wall 1a of the packing box 1.

Further, in the operation of the canopy 2 from the open position to the closed position, the switching valve 21 is switched to the left position, so that the canopy opening / closing cylinder 15 is first retracted to keep the canopy 2 in the bent state. Rotate to the top of 1. When the canopy opening / closing cylinder 15 is completely retracted, the sequence valve 26 is opened, whereby each canopy refracting cylinder 6 is retracted to rotate the main frame 4 portion of the canopy 2 to the closed position shown in FIG.

That is, the operation from the open position to the closed position is performed by the reverse operation of the operation from the closed position to the open position.

In this example, the canopy 2 in which the main frame 4 is configured to be bendable with respect to the rotating frame 3 is shown, but the canopy is not limited to this, and a canopy that does not bend may be used. That is, the base end portion of the main frame 4 (that is, the base end portion of the main frame body 41) may be directly supported by the rotary shaft 11 without the rotary frame 3.

[0040]

[Effect of the device]

 As described above, according to the present invention, the sheet member is stretched from the front surface side of the frame body to the rear surface side of the frame body while covering the projecting frame against the biasing force of the biasing member. The urging force of the urging member acts in the bulging direction that separates the bulging frame from the frame body, so that appropriate tension is always applied to the seat member, and slack does not occur without causing slack as in the past. No need to take.

Also, when the pair of left and right canopies are arranged in a substantially horizontal closed position that closes the opening of the upper surface of the luggage box, the tip ends of the overhanging frames of the left and right canopies press each other by the biasing member. Since they abut against each other while being urged in the direction of the arrow, there is no gap between the tips of the overhanging frames, and the inside of the luggage box can be securely held in a sealed state, and foreign matter from the outside is not mixed in. It can be prevented.

[Brief description of drawings]

FIG. 1 is a rear view showing an overall configuration of a canopy of a packing box and a canopy opening / closing device.

FIG. 2 is an enlarged rear view showing a canopy and a canopy opening / closing device.

FIG. 3 is a plan view showing a main frame and a rotating frame.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a hydraulic circuit diagram of the canopy opening / closing device.

[Explanation of symbols]

 1 Packing Box 1a Side Wall 2 Canopy 5 Sheet Member 10 Canopy Opening / Closing Device 11 Rotating Shaft 41 Main Frame Main Body (Frame Main Body) 42 Overhanging Frame 43 Spring (Biasing Member)

Claims (1)

[Scope of utility model registration request] 1. A canopy of a luggage box provided on a rotary shaft provided along upper and left side edges of side walls of the cargo box so as to be openable and closable about the rotary shaft by an actuator, wherein the canopy is a base. A frame main body whose end is rotatably supported by the rotary shaft, an overhanging frame provided at the tip of the frame main body so as to be able to overhang, and an interposing between the frame main body and the overhanging frame. A biasing member that biases the projecting frame away from the frame body in a projecting direction, and a back surface side of the frame body that covers the projecting frame from the surface side of the frame body against the biasing force of the biasing member. A canopy of a luggage box, comprising a sheet member stretched over.