KR100691853B1 - Automatic covering apparatus for cargo truck - Google Patents

Abstract

The present invention relates to an automatic cover device for a loading box of a freight car, which can cover or open a loading box naturally by driving a driving device installed on the side of the loading box. More specifically, the cover is folded with a uniform force. At the same time, it is possible to effectively reduce the damage to the cover by the gusts, and relates to an automatic cover device for the loading box of the van, which can simplify the configuration of the cover device and reduce the production cost.

An automatic cover device for a loading box of a freight vehicle according to the present invention includes a rotation shaft provided on a side wall of the storage box and rotatably coupled to a driving means, a cover frame rotatably coupled to an upper portion of a support bar coupled to the rotation shaft, and the rotation shaft. An automatic cover device for a loading box of a freight vehicle having one side connected to the other side and a folding member connected to the cover frame, the apparatus comprising: a stopper protruding on one side of the support bar to interfere with the folding member and limit a rotation range; One side is fixed to the stopper and the other side is characterized in that it further comprises an elastic member provided on the cover frame to be fixed to the folding member.

Van, loading box, switchgear, folding member, drive motor, working arm

Description

AUTOMATIC COVERING APPARATUS FOR CARGO TRUCK}

Figure 1a is a perspective view showing an automatic opening and closing device of a conventional truck loading box cover,

Figure 1b is a perspective view of the cover folding means of Figure 1a,

Figure 2 is an enlarged perspective view of the automatic cover device for the loading box of the van according to the present invention,

3 is a partially enlarged perspective view of FIG.

Figure 4 is an exploded perspective view of the automatic cover device for the loading box of the van according to the present invention,

5A is an exploded perspective view of the first operating arm according to the present invention;

5b is an exploded perspective view of the third operating arm according to the present invention;

6 is a cross-sectional view showing an operation process according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: drive motor 110: drive shaft

120 side wall 200 first cover part

210: rotating shaft 220: support bar

221: stopper 300: second cover portion

310: cover frame 400: folding member

405: support bracket 406: hinge shaft

410: first operating arm 420: second operating arm

430: third operating arm 431: through hole

432: engaging jaw 433: engaging projection

440: cover arm 450: elastic member

J: Coupling Part P: Plate

The present invention relates to an automatic cover device for a loading box of a freight car, which can cover or open a loading box naturally by driving a driving device installed on the side of the loading box. More specifically, the cover is folded with a uniform force. At the same time, it is possible to effectively reduce the damage to the cover by the gusts, and relates to an automatic cover device for the loading box of the van, which can simplify the configuration of the cover device and reduce the production cost.

In general, dump trucks have been equipped with an automatic cover device to automatically open and close the open top of the stack to prevent various loads loaded on the stack during operation.

The automatic cover device for the dump truck loading box is a pair of covers that are rotatably supported on both sides of the loading box, and the cover is connected to one side of the cover through a drive shaft to open and close the opened upper surface of the loading box as a rotating force is applied to the cover. It was composed of a driving device to rotate the top of the loading compartment was able to open and close automatically.

However, since the width of the cover corresponds to half the width of the loading box, the radius of rotation is increased so that an excessive force is applied to the driving device and a risk of safety accident occurs.

Therefore, as a technique for solving the above problems, "opening and closing device of the lid of the truck loading box" of the Republic of Korea Patent Publication No. 1998-8755 (published: Apr. 30, 1998) is shown in Figures 1a and 1b.

As shown in the figure, the automatic opening and closing device of the cover of the van, the cover is installed in both sides of the stacking bin divided into the first cover part 10 and the second cover part 20, respectively, After coupling one side edges of the first cover part 10 and the second cover part 20 to each other rotatably, the motor 1 connected to the first cover part 10 and the rotating shaft 3 is driven. When the first cover part 10 is rotated, as the first cover part 10 is rotated, the second cover made of first, second, third operating rods (42, 44, 45) made of a three-link The second cover part 20 is configured to be folded by the folding means 40.

However, the automatic opening and closing device of the lid of the van, the folding means protrudes to the side or the top of the bin when the lid is closed, which not only damages the aesthetics and increases the width or height of the vehicle, but also impinges on the object. There was a problem that is broken.

In addition, the spring 6 is stretched and contracted according to the range of the folded angles of the first and second cover parts 10 and 20, and the limiting of the folded angle of the first and second cover parts 10 and 20 is a spring ( 6), the elastic force of the spring (6) is easily lowered or broken, especially when the first and second cover parts 10 and 20 are affected by the gusts during the opening and closing operation of the second cover part 20 There was a disadvantage that the cover portion and the folding device are easily damaged due to the phenomenon that the container is turned over outwards, or it must be used interchangeably.

In addition, the bar 4 supporting the first and second cover parts 10 and 20 and transmitting the rotational force of the pivot shaft 3 to the second cover part 20 and the first, second and third operating rods as folding means. (42, 44, 45) was to be made of a thick metal plate or metal rods, in particular, the bar shaft coupling portion 45a and the packing support frame fixing portion 45b at the end of the third operating rod 45 Each is molded, and the configuration is complicated, such as having to have a bolt 46 for fixing to the packing support frame 21 is very difficult and expensive to increase the economic burden of the manufacturer.

In addition, the first, second, and third operating rods 42, 44, and 45, which are the second cover folding means 40, are not coupled to the same line, and the hinge portion 43 is coupled to protrude in the lateral direction. The frame of the vertical direction of the packaging support frame 21 of the second cover portion 20 to be interlocked is not coupled in the same line does not evenly transmit the rotational force of the rotating shaft 3 to each part, or the first, second When the opening and closing operations of the cover (10, 20) or the wind is affected by the eccentric load to the hinge portion 43 has a weak coupling strength, there was a problem that the hinge portion 43 is easily loosened.

The present invention has been made to solve the above-mentioned problems, an object of the present invention, it is possible to prevent the inverted by the gusts during the opening and closing operation of the cover, thereby preventing the folding member for folding the cover is damaged. The present invention provides an automatic cover device for a loading box of a lorry.

Another object of the present invention is to simplify the configuration of the opening and closing device of the cover to ensure the ease of manufacturing and to reduce the cost.

Another object of the present invention is to maintain the balance of the force by connecting the constituent members of the folding member in a straight line in a straight line, and to fold the cover, by closely contacting the cover to the side of the loading box, collision with the object while driving the vehicle It is to provide an automatic cover device for the loading box of the van that can prevent the cover from being damaged.

The configuration of the present invention for achieving the above object, the rotating shaft is provided on the side wall of the loading box and rotated to the drive means, a cover frame rotatably coupled to the upper portion of the support bar coupled to the rotating shaft, and the rotating shaft An automatic cover device for a loading box of a freight vehicle having one side connected to the other side and a folding member connected to the cover frame, the apparatus comprising: a stopper protruding on one side of the support bar to interfere with the folding member and limit a rotation range; One side is fixed to the stopper and the other side is characterized in that it further comprises an elastic member provided on the cover frame to be fixed to the folding member.

The folding member may include: a support bracket fixed to the side wall and rotatably penetrating the pivot shaft on one side thereof, and a hinge shaft protruding from the other side; A first operating arm having one side hinged to a hinge shaft of the support bracket; A second operating arm hinged to the first operating arm; A third operation arm which is hinged to one side of the second operation arm and has a through hole formed at one side thereof so that one side of the cover frame penetrates and interferes with the stopper; One side is coupled to the third operation arm and the other side is coupled to the other side of the cover frame, it is preferable that the other side of the elastic member is composed of a cover arm fixed.

In addition, at least one of the first and third operating arms is provided with a pair of plates having a coupling portion bent at one side at a predetermined angle, characterized in that the plate is integrally joined so that the coupling portions face each other.

In addition, the support bar is provided in a plate shape, characterized in that bent at a predetermined angle.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention in detail.

Figure 2 is an enlarged perspective view of the automatic cover device for a cargo box according to the present invention, Figure 3 is a partially enlarged perspective view of Figure 2. Figure 4 is an exploded perspective view of the automatic cover device for a cargo box according to the present invention.

As shown in the figure, the automatic cover for the loading box of the freight truck of the present invention is largely provided with driving means provided on the side wall 120 of the loading box, the first and second cover parts (200, 300) for sealing the loading box, and It is composed of a folding member 400 for receiving the rotational force of the drive means for folding the first and second cover parts 200 and 300.

The driving means is fixed to the side wall 120 and is provided with a drive motor 100 for generating a rotational force, the rotating shaft 210 is coupled to the drive shaft 110 of the drive motor 100 shaft.

In addition, the pivot shaft 210 and the support bar 220 are connected via a medium, a plurality of frames are coupled to the cover frame 310 having a frame shape is provided, the pivot shaft 210 and the cover frame 310 A cover (not shown) is connected to one side of the cover to form the first cover part 200, and a cover (not shown) is connected between the cover frames 310 to form the second cover part 300. Done.

Here, the support bar 220 is integrally rotated together with the pivot shaft 210 to transmit the rotational force so that the first and second cover parts 200 and 300 can be folded, and the first and second cover The support bar 220 is provided in the shape of a plate, and the support bar 220 is provided in a plate shape in a state in which the parts 200 and 300 are unfolded, and a flat cross section is bent at a predetermined angle to have a "∧" shape. As a result, the supporting strength with respect to the load can be improved.

In addition, as the strength is improved by the bent shape of the support bar 220, even a relatively thin metal plate can be manufactured, thereby achieving cost reduction.

The folding member 400, one side is connected to the pivot shaft 210 and the other side is connected to the cover frame 310, the detailed configuration is fixed to the side wall 120 and the pivot shaft on one side ( The first operating arm 410 rotatably coupled to the support bracket 405 through which the 210 is rotatably penetrated, the hinge shaft 406 protrudes from the other side, and the hinge shaft 406 of the support bracket 405. ), A second operating arm 420 hinged to the first operating arm 410, one side of the second operating arm 420 is hinged, and one side of the cover frame 310 penetrates to the other side. It consists of a third operation arm 430 formed with a through hole 431, and a cover arm 440 coupled to one side of the third operation arm 430 and the other side is coupled to the other side of the cover frame 310. .

The first and third working arms 410 and 430 are provided with a pair of plates P having coupling parts J formed at one side by bending at a predetermined angle, as shown in FIGS. 5A and 5B. The plate P is integrally joined so that the coupling part J is opposed to each other.

In the manufacturing method of the first and third working arms 410 and 430, a thin metal plate of 3 to 7 mm is press-molded by press working, and the plate P is bent by forming the coupling part J on one side. After that, the pair of plates (P) consists of a process of joining each other by welding.

In addition, both sides of the second operating arm 420 is manufactured in the form of a washer to be seated on the coupling portion (J) of the first, third operating arms (410, 430), respectively, to be coupled by a hinge.

Here, the coupling portion (J) of the first, third operating arms (410, 430), and both sides of the second operating arm (420) coupled to each of the hinge holes are formed to be coupled by a hinge, respectively.

As described above, the first and third working arms 410 and 430 may be manufactured by using a relatively thin metal plate, thereby not only reducing the cost, but also by bending the coupling part J and forming the hinge hole. Extremely easy to improve the convenience of the machining operation, in particular, both sides of the second operating arm 420 is seated and hinged between the coupling portion (J), the first, second, third operating arm ( There is an advantage that the coupling portion of the 410, 420, 430 can be coupled in a straight line without protruding in the transverse direction.

In addition, by installing the same upper portion of the third operating arm 430 and the support bar 220 on one side of the cover frame 310, it is possible to reduce the number of components of the automatic cover device is easy to manufacture and cost Can be reduced.

On the other hand, the stopper (221) protruding on one side of the support bar 220 is further included so that the third operating arm 430 interferes with the rotation range, the first and second cover parts (200, 300) When the second cover portion 300 is rotated in the outward direction of the side wall 120 of the loading box in the unfolded state, the third operating arm 430 interferes with the stopper 221 to rotate By being limited, the second cover part 300 is supported and the second cover part 300 is prevented from being turned over by a gust.

In addition, an elastic member 450 is provided on the cover frame 310 so that one side is fixed to the stopper 221 and the other side is fixed to the cover arm 440. More specifically, the elastic member 450 is the cover The coil spring wound around the frame 310 facilitates the folding of the second cover part 300 and at the same time elastically supports the rotation of the third operating arm 430, thereby causing the The third operating arm 430 collides with the stopper 221 to minimize damage.

In this case, the third operating arm 430 may be stepped to reduce the cross section of the third operating arm 430 so as to prevent slippage when the third operating arm 430 contacts the stopper 221. It is preferable to form a 432, and more specifically, the engaging jaw 432 is formed by stepping the pair of side surfaces of the pair of plates P constituting the third operation arm 430, respectively. Is formed.

The cover arm 440 is provided in the form of a pipe having a "T" shape, one side of which is fitted to the engaging projection 433 coupled to the rear of the third operating arm 430, the other side of the cover The frame 310 is penetrated and fixed.

The operation of the automatic cover device for the loading box of the van according to the present invention configured as described above will be described in detail according to the operation process.

First, the drive shaft 100 is driven to fold the first and second cover parts 200 and 300 in a covered state so as to surround the upper surface of the loading box, thereby rotating the rotating shaft 210 to the sidewall 120 of the loading box. ) Rotate outward.

As the pivot shaft 210 is rotated, the support bar 220 having one side fixed to the pivot shaft 210 is rotated in an upright state, and rotates in the outward direction of the loading box, on the other side of the support bar 220. The connected cover frame 310, and the third operating arm 430 and the cover arm 440 connected thereto are rotated at the same time.

At this time, the support bar 220 is rotated together with the pivot shaft 210 and the folding member 400 is rotated around the hinge shaft 406 of the support bracket 405 is located on the upper side of the loading box The elastic restoring force is stored while the elastic member 450 connecting the stopper 221 and the cover arm 440 of the support bar 220 is tensioned (processes I to II of FIG. 6).

Here, the cover frame 310, the second operating arm 430, the cover arm 440 when the cover is severely affected by the wind in a state in which the support bar 220 is vertically positioned in the loading box. ) Rotates in the outward direction of the loading box about the upper portion of the support bar 220, which is offset by the elastic member 450 provided in the cover frame 310 and the third operation As the locking step 432 of the arm 430 interferes with the stopper 221 of the support bar 220, the cover frame and the cover are turned upside down in the stacking box, and thus the hinge connection is large and thus the coupling force is increased. The weak folding member 400 can be effectively prevented from being damaged.

In addition, the support bar 220 is also provided to be bent at a predetermined angle to improve the support strength it is possible to smoothly support the load of the cover frame 310.

Subsequently, as the pivot shaft 210 and the support bar 220 are continuously rotated, the folding member 400 is rotated about the hinge shaft 406 of the support bracket 405 to be positioned on the side of the loading box. After the process (II ~ III of Figure 6), the support bar 220 is rotated close to the lower side of the loading box, connected to the stopper 221 and the elastic member 450 of the support bar 220 While the cover arm 440 is pulled by the elastic restoring force, the third operating arm 430 and the cover arm 440 are rotated and folded to be horizontal with the support bar 300 (FIG. 6). III-IV process).

When the opening operation is completed as described above, the first and second cover parts 200 and 300 are folded in a state in which the first and second cover parts 200 and 300 are in close contact with the side of the loading box.

At this time, the third operating arm 430 and the cover arm 440 are positioned below the hinge shaft 406 of the support bracket 405, and the support bar 220 and the first and second inwards thereof. Operating arms 410 and 420 are positioned to reduce the space between the side wall 120 and the folding member 400 of the loading box, thereby preventing the folding member 400 from colliding and being damaged by the object while the vehicle is driving. To prevent it.

On the other hand, the operation of redistributing the first and second cover parts 200 and 300 is performed in the reverse order of the operation process, and thus detailed description thereof will be omitted.

As described above, in the present invention, the total number of components of the automatic cover device is reduced, and the first and third operating arms 410 and 430 are manufactured by mutually bonding thin metal plates, or the thin metal plates are formed at an angle. By manufacturing the support bar 220 by bending, the manufacturing cost of the automatic cover device can be effectively reduced, and the coupling portion J of the first and third operating arms 410 and 430 is connected to the second operating arm 420. Both sides are seated and hinged to be coupled in a straight line without protruding in the lateral direction. The elastic member 450 and the stopper 221 are organically operated with each other by strong winds such as gusts. In order to prevent the second cover part 300 and the folding member 400 from being damaged in advance, it will be referred to as a very useful invention in an automatic cover device for a loading box of a truck.

As described above, according to the present invention, the first and second cover parts are prevented from being turned over by the action of the elastic member and the stopper even when a strong wind blows during the opening and closing operation of the cover, and the folding member for folding the cover is damaged. It can be blocked beforehand.

In addition, the first and third working arms may be manufactured by joining thin metal plates to each other, or the support bar may be manufactured by bending the thin metal plates at a predetermined angle, thereby effectively reducing the material cost causing an increase in manufacturing cost. As the folding member is coupled in a straight line without protruding in the lateral direction by the coupling portion of the first and third operating arms, there is an advantage in that the force can be balanced in the folding operation.

In addition, the cover can be folded in close contact with the side wall of the loading box, thereby preventing the cover from being damaged by colliding with the object while the vehicle is driving.

Claims (4)

Rotating shaft which is provided on the side wall of the loading box and rotated to the driving means, a cover frame rotatably coupled to the upper portion of the support bar coupled to the rotating shaft, and one side connected to the rotation shaft and the other side connected to the cover frame In the automatic cover device for the loading box of the van including the adhesive member, A stopper protruding on one side of the support bar so that the folding member interferes with the rotation range; One side is fixed to the stopper, and the other side is an automatic cover device for a loading box for a cargo compartment, characterized in that the elastic member provided on the cover frame is further fixed to the folding member. The method of claim 1, wherein the folding member, A support bracket fixed to the side wall and rotatably passing through the rotation shaft on one side thereof, and a hinge shaft protruding from the other side; A first operating arm having one side rotatably coupled to a hinge shaft of the support bracket; A second operating arm hinged to the first operating arm; A third operation arm which is hinged to one side of the second operation arm and has a through hole formed at one side thereof so that one side of the cover frame penetrates and interferes with the stopper; One side is coupled to the third operation arm, the other side is coupled to the other side of the cover frame, the other side of the elastic member is an automatic cover device for a loading box for a cargo compartment, characterized in that composed of a cover arm fixed. The method of claim 2, At least one of the first and third operating arms is provided with a pair of plates having a coupling portion bent at one side at a predetermined angle, and the plates are integrally joined so that the coupling portions face each other. Automatic cover for The method according to claim 1 or 2, The support bar is provided in the form of a plate, automatic cover device for the loading box of the van, characterized in that bent at a certain angle.

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