KR200489036Y1 - Cargo box of truck with folding type side gate - Google Patents

Abstract

The present invention is intended to provide a lorry loading box that can reliably hold the folded state while preventing the deformation of the double gate side gate by reducing the impact generated during the folding process.
To this end, in the present invention, a plurality of hinges attached to a side frame of a luggage rack, one of the brackets being fixed to the other bracket of the hinge, a cylindrical groove knuckle for connection is formed on the upper side, An upper gate having a lower gate formed with an interference preventing groove at the center thereof, a cylindrical groove-like knuckle for connecting to the lower portion thereof and an interference preventing groove formed at the center of the outer surface, A knob pin connected to each other so as to be rotatably freely rotatable within a predetermined range, a bulb fixed to protrude outward on the interference preventing groove of the upper gate, and a spring fixed on the interference preventing groove of the lower gate, So as to absorb and alleviate the shock, to hold the bulb It discloses a truck cargo bed, including a holder.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cargo truck having a two-

More particularly, the present invention relates to a structure for loading and unloading a cargo car, and more particularly, to a cargo car which is capable of absorbing and mitigating shocks generated during the folding process of a two-step side gate to prevent deformation, The present invention relates to a lorry loading box having a foldable side gate structure that can be stably maintained.

Generally, cargo trucks such as cargo trucks and pick-up trucks, which have no roof or lid, are usually hinged to the floor with side gates and tail gates attached to them. When the cargo is loaded or unloaded, And can be easily operated.

If the cargo is loaded at a height higher than the height of the side gate in the loading cargo of such a lorry, there is a risk of falling down of the cargo during transportation and traveling, and there is trouble and trouble to be bound to each other by using a rope or the like.

In addition, even if the side gate is low in height, it is difficult to load the cargo more than a certain amount even if the cargo is tied to the rope or the like. Therefore, if the volume is large even if the weight is light and the maximum load weight is not exceeded, There is an uneconomical problem.

Accordingly, when the height of the cargo loaded on the loading cargo is higher than the height of the side gate, the height of the side gate can be raised to firmly support the cargo. When the cargo is not loaded or loaded in the loading cargo, A two-stage side gate structure has been proposed.

For example, as shown in FIG. 1, Korean Utility Model Publication No. 20-1999-010408 discloses a structure in which a side gate 2 is attached to both sides of a floor 1 in a hinged joint, and side gates 2 And a support member 4 is hingedly connected to an upper end of the cargo truck.

This is because the side gate 2 and the support member 4 are simply connected by the hinge joint method so that the process of folding the support member 4 with respect to the side gate 2 standing up by the lock and restraint of the door catch Or the support member 4 is repeatedly collided with the side gate 2 while the support member 4 swings freely while traveling in a state in which the support member 4 is folded, thereby causing noise and damage to components such as the hinge.

The hinge for attaching the side gate 2 to both sides of the floor 1 and the hinge for connecting the side gate 2 and the supporting member 4 are exposed to the outside and are not well- There is a limitation that design aesthetic sensitivity is significantly lowered.

Herein, the background art or the prior art described above is information obtained by the inventor in the process of acquiring the design, and is merely to help understand the technical significance of the design, and prior to the application of the design, But does not mean well-known technologies.

KR10-1998-059679A (1998.10.07) KR10-1999-010408I (Mar. 15, 1999)

Therefore, the inventor of the present invention intends to solve the limitations and problems of the folding side gate of the existing lorry loading box, taking into consideration all the above-mentioned matters in detail, and absorbs and mitigates the impact generated during the folding process of the two- And to develop a new structure of a lorry with a new structure capable of stably maintaining the folded state so that the two-side side gate can be opened and closed in a parallel folded state. As a result, I have come up with the idea.

Therefore, the technical problem and object to be solved by the present invention is to provide a vans loading box that can absorb and mitigate the impact generated during the folding process of the two-stage side gate to prevent deformation.

Another technical problem and object to be solved by the present invention is to provide a freight car loading box capable of rotating and stably maintaining the two-side side gate in a parallel folded state.

The technical problem and object to be solved by the present invention are not limited to the technical object and purpose described above, and another technical object and purpose not mentioned can be understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a hinge for a vehicle, comprising: a plurality of hinges attached to a side frame of a lorry loading box, one of the brackets being attached to the other bracket of the hinge; A bottom gate having a cylindrical groove-like knuckle for connection at an upper portion thereof, a lower gate having an interference preventing groove formed at a center portion of the outer surface thereof, and a cylindrical groove-shaped knuckle for connection at a lower portion thereof, An upper gate having an interference preventing groove formed in a middle portion of the upper and lower gates, a knuckle pin interconnecting the knuckle of each of the upper and lower gates so as to freely rotate within a predetermined angle range, In order to prevent contact interference with the lower gate in the folded state, Wherein the upper gate and the lower gate are fixed on the interference preventing groove of the lower gate so as not to cause contact interference with the upper gate in a state where the upper gate and the lower gate are folded in parallel with each other, And a holder for holding and supporting the bulb by absorbing and mitigating the impact while being elastically deformed by the elastic force of the holder.

As a result, unlike the prior art, the present invention absorbs and mitigates the shock generated during the folding process of the two-stage side gate to prevent deformation, and also to rotate and stably maintain the two-stage side gate in a parallel folded state .

A preferred embodiment of the present invention is characterized in that the knuckle of each of the upper and lower gates and the knuckle pin are formed with grooves in the respective knuckles so as to rotate within a range of 90 degrees opposite to each other, The bulb is fixed at an angle of 10 to 20 degrees with respect to the vertical plane of the upper gate, and the holder has, at the center thereof, An elastic support which is elastically deformed by elasticity when an external force is received, and an elastic support member which is fixed on the interference preventing groove of the lower gate by wrapping around the elastic support and is connected to the restricting groove And a housing having a through hole formed therein.

In a preferred embodiment of the present invention, the lower gate has a skirt for covering the other bracket of the hinge at a lower portion of the outer surface, a fitting groove portion and a fitting projection portion are formed at a lower portion of the inner surface, And a bottom cap having a fitting groove portion and a fitting protrusion portion corresponding to the fitting groove portion and the fitting protrusion portion of the lower gate are interposed between the fitting groove portion and the fitting protrusion portion of the gate to block exposure of the other bracket of the hinge fixed to the lower gate, And a plurality of contact protrusions formed on the bottom surface of the bottom cap to be elastically deformed by elasticity to absorb and mitigate the impact upon closing of the bottom gate, And may further comprise a buffer-tight fitting formed thereon.

An embodiment of the present invention having the means and structure for solving the above object and the technical object of the present invention is characterized in that when the upper gate and the lower gate are folded in parallel to each other, a buffering force and a binding force are generated by the first contact between the bulb and the holder, As a result, the shock generated in the process of folding the upper gate and the lower gate can be absorbed and mitigated, thereby preventing distortion such as warping and breakage of the components.

In addition, since the upper gate stably holds the folded state parallel to the lower gate, it is possible to increase the convenience of opening and closing the upper gate and the lower gate at the same time, You can drive safely.

Here, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a cross-sectional view showing a side gate of a lorry loading box according to a conventional technique of FIG. 1;
2 is a side view of a vans on which a lorry loading box is mounted according to an embodiment of the present invention.
3 is a local cross-sectional view showing a state in which the side gate of the lorry loading box is closed according to the embodiment of the present invention.
4 is a local cross-sectional view showing a state in which a side gate of a lorry loading box is folded according to an embodiment of the present invention.
5 is a local cross-sectional view showing a state in which the side gate of the lorry loading box is opened and tilted according to the embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the function of the present invention, and it is to be interpreted as a concept conforming to the technical idea of the present invention and interpreted in a way that is commonly or commonly recognized in the technical field.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

Furthermore, the term " and / or " in this specification is intended to encompass any combination of the plurality of listed items or any of the plurality of related items listed, and when a part includes certain elements, Quot; means < / RTI > that other elements may be included, rather than excluding other elements.

That is, it is to be understood that the features, numbers, steps, operations, elements, parts, or combinations thereof described in the present specification are meant to beexistent, and that one or more other features or numbers, step operation components, And does not exclude the presence or addition of one or more of the foregoing.

In addition, the meaning of the terms " part " and " unit " means at least one function desired by the system or a module type that performs a unit or role to process a certain operation, Or a device or assembly capable of performing an independent operation.

And terms such as top, bottom, top, bottom, or top, bottom, top, bottom, etc. are used for convenience in distinguishing relative positions in each component. For example, the upper side of the drawing may be referred to as an upper side and the lower side as a lower side.

Also, the terms first, second, etc. may be used to describe various components. That is, the terms first, second, etc. may be used for the purpose of distinguishing one component from another. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and the second component may also be referred to as a first component.

2 to 5, the luggage rack according to the present invention includes a hinge 10, a lower gate 20, an upper gate 30, a knuckle pin 40, a bulb 50, a holder 60, A bottom cap 70, and a buffer tight fitting 80. [

The hinge 10 supports the lower gate 20 and the upper gate 30 so that the lower gate 20 and the upper gate 30 can be stably and freely rotated when they are simultaneously opened and closed. The upper and lower brackets 11 and 12 are provided so as to be able to rotate about the axis and interlock with each other, One bracket 11 is attached to both side frames S forming the bottom F of the luggage rack and the other bracket 12 is fixed to the bottom gate 20. [

The lower gate 20 is installed on both sides of the lorry loading box so as to be openable and closable so as to facilitate loading and unloading of the cargo on the floor F of the cargo hold and preventing the cargo from falling out of the cargo hold while driving. And a knuckle 21 of a cylindrical groove (hook type) for connecting the upper gate 30 with the upper gate 30 via the knuckle pin 40 is formed on the bracket 12 of the hinge along the longitudinal direction .

And the upper gate 30 is connected to the bulb 50 so as not to cause contact interference with the bulb 50 and the holder 60 when the upper gate 30 is folded in parallel to the center portion of the outer surface of the lower gate 20. [ And an interference preventing groove 23 for providing a clearance space so as to be folded parallel to each other, regardless of the holder 60, are formed in a hollow shape.

A groove 22 is formed in the knuckle 21 of the lower gate 20 along the longitudinal direction to limit the knuckle pin 40 to rotate within a range of 90 degrees opposite to the direction of the knuckle pin 40.

A skirt 24 for covering the lower bracket 12 of the hinge 10 is integrally formed at a lower portion of the outer surface of the lower gate 20 and a bottom cap 70 is coupled to a lower portion of the inner surface. A fitting groove portion 25 and a fitting projection portion 26 are formed.

Here, the lower gate 20 can be formed by extruding an aluminum alloy, a galvanized steel sheet, or the like into a predetermined cross-sectional shape having a thickness, a partition wall, and the like to reduce the weight and to secure bending stiffness and prevent structural deformation.

The upper gate 30 can be opened and closed simultaneously with the lower gate 30 on both sides in the longitudinal direction of the lorry loading box to facilitate loading and unloading of the cargo on the loading floor F and allowing the cargo to fall outside the loading lorry (Hooked) knuckle 31 for connecting the lower gate 20 and the lower gate 20 through a knuckle pin 40 is integrally formed along the longitudinal direction.

And a bulb 50 is formed on the lower gate 20 so as not to cause contact interference with the bulb 50 and the holder 60 when the lower gate 20 is folded in parallel. And an interference preventing groove 33 for providing a clearance space so as to be folded in parallel so as to be superposed on each other regardless of the holder 60.

A groove 32 is formed in the knuckle 31 of the upper gate 30 along the longitudinal direction so as to restrict rotation within a range of 90 degrees opposite to the knuckle pin 40.

Here, the upper gate 30 is formed by extruding an aluminum alloy, a zinc-coated steel sheet or the like into a predetermined cross-sectional shape having a thickness and a partition wall for preventing the structural deformation while ensuring bending rigidity while reducing the weight, .

The knuckle pin 40 can freely rotate and foldably engage the knuckles 21 and 31 of the upper and lower gates within a predetermined angular range to smoothly fold the upper gate 30 against the lower gate 20 The upper gate 30 and the lower gate 20 can be stably supported so as to stably support the connecting portion of the upper gate 30 and the lower gate 20 to prevent the opening or tipping due to the load of the cargo. And the upper and lower knuckles 21 and 31 are engaged with each other to form a pin shape that is vertically and symmetrically formed.

On the inner side of the knuckle pin 40, the stoppers 41 corresponding to the grooves 22, 32 formed in the knuckles 21, 31 of the upper and lower gates, respectively, are integrally formed.

That is, when the upper gate 30 and the lower gate 20 are folded in parallel to each other or are straightly extended, the stopper 41 contacts the grooves 22, 32 formed in the knuckles 21, The upper gate 30 and the lower gate 20 are constrained to rotate in the opposite direction to each other within a range of 90 degrees by constraining force in accordance with interference so that the upper gate 30 and the lower gate 20 are folded in parallel to each other, It is possible to firmly maintain the standing state.

The knuckle pin 40 is disposed between the upper gate 30 and the lower gate 20 in order to prevent the cargo such as sand loaded on the load box from flowing into the gap between the upper gate 30 and the lower gate 20. [ And is formed so as to surround a gap generated in the connection portion.

The bulb 50 absorbs and alleviates an impact generated when the upper gate 30 is folded in parallel with the lower gate 20 to prevent deformation such as warping and also stably maintains the folded state of the upper gate 30. [ The bottom gate 20 can be opened and the vehicle can be safely traveled. By this, it is possible to make the free end portion (head portion) of the body portion of the round bar shape having a certain length larger in diameter than the body portion, And on the interference preventing groove 33 of the upper gate 30 so as not to cause contact interference with the lower gate 20 in a state in which the upper gate 30 is folded in a parallel state such that the lower gate 20 is superimposed thereon And is fixedly protruded.

The bulb 50 can be brought into contact with the holder 60 due to the rotation of the upper gate 30 around the knuckle pin 40 and can be made stable and stable, And is fixed at an angle of 10 to 20 degrees with respect to the vertical surface of the upper gate 30 so as to prevent buffering effect from being inserted directly into the holder 60 and prevent mutual locking and binding state from being easily released .

In other words, if the bulb 50 is vertically fixed to the vertical surface of the upper gate 30, there is little interference in the process of coupling with the holder 60, It may be difficult to stably maintain the state in which the upper gate 30 and the lower gate 20 are folded in parallel with each other because the gate 50 easily escapes from the holder 60.

The holder 60 absorbs and mitigates impact generated when the upper gate 30 is folded in parallel with the lower gate 20 to prevent deformation such as warping and also prevents the hinge 10 and the knuckle pin 40 The upper gate 30 and the lower gate knuckle 21 and 31 and the lower gate knuckle 21 and the lower gate knuckle 21 at the same time as the upper gate 30 is fully opened, The upper gate 30 and the upper gate 30 are connected to each other in a state of being folded in parallel such that the upper gate 30 is superimposed on the lower gate 20. [ And is fixed on the interference preventing groove 23 of the lower gate so as not to cause contact interference.

The holder 60 is fixed on the interference preventing groove 23 of the lower gate while covering the elastic support 61 to absorb and mitigate the impact while being elastically deformed by elasticity when receiving an external force, And a housing 65 made of a metal material for guiding and guiding the smooth and stable insertion and detachment of the guide member 50.

In other words, the elastic retainer 61 is formed at the center thereof with a restricting groove 62 corresponding to the shape of the free end of the bulb 50 (head), so that the rounded end of the bulb 50 can be fitted When the rounded end of the bulb 50 is completely inserted, the bulb 50 is returned to the original shape and position, and the rounded end portion (head portion) of the bulb 50 and the opposite body portion And a through hole 66 communicating with the restricting groove 62 is formed at a center portion of the housing 65 surrounding the elastic retainer 61 so that the bulb 50 The end portion can be guided and guided so as to be naturally inserted or removed.

In order to minimize the change of the setting position of the elastic support 61 in the process of repeated insertion and disconnection of the bulb 50 by maintaining the stable and rigid engagement state of the elastic support 61 and the housing 65, A fixing groove 63 is formed at the edge of the support 61 and a collar 67 fitted to the fixing groove 63 is formed at the inner edge of the housing 65 facing the fixing groove 63.

The bottom cap 70 is provided for blocking the exposure of the hinge 10 bracket 12 fixed to the lower gate 20 by means of bolting or the like and attaching the buffer contact fitting 80 to the lower gate 20 Fitting grooves 71 and fitting protrusions 72 corresponding to the fitting grooves 25 and the fitting protrusions 26 of the lower gate are formed so as to be easily fixed by the fitting method.

Further, the bottom cap 70 is formed with an attachment groove 73 for attaching the shock absorber 20.

The buffer fitting 80 is mounted on the bottom surface of the bottom cap 70 to absorb and mitigate the impact with the side frame S while being elastically deformed by elasticity when the bottom gate 20 is closed.

In addition, a plurality of contact protrusions 81 are formed in the buffer contact fitting 80 at regular intervals so as to be more closely adhered to each other when contacted with the opposing face of the side frame S.

The buffering contact 80 may be formed mainly of an elastic band such as rubber or silicone to prevent the gap between the lower gate 20 and the side frame S and may be separated from the attachment groove 73 of the bottom cap And may be joined in a dovetail joint manner so as to maintain a state that is not maintained.

For example, the attachment grooves 73 of the bottom cap and some of the corresponding cushioning fittings 80 may be dovetail having a tapered cross section corresponding to each other so as not to be easily separated in the inserted state And may be formed in the form of a dovetail groove.

As shown in FIG. 4, when the amount of cargo is small or the height of the cargo truck is low, the lower gate 20 is fixed vertically so as not to move with the door catch, The load can be supported in a state of being folded in parallel with the gate 20. At this time, a buffering force and a binding force are naturally generated by the contact between the bulb 50 and the holder 60, whereby the upper gate 30 and the lower gate 20 It is possible to prevent the hinge 10 and the knuckle pin 40 from being deformed or damaged.

That is, when the upper gate 30 is folded in parallel with the lower gate 20, the bulb 50 first collides with the holder 60, and the energy at the time of the collision is deformed by the elastic support 61 of the holder Effectively absorbing and minimizing the impact on the upper gate 30 and the lower gate 20 and on the hinge 10 and the knuckle pin 40. By the buffering action of the bulb 50 and the holder 60 The impact energy is naturally extinguished so as to prevent the deformation of the upper gate 30 and the lower gate 20 and minimize the stress (deforming force) caused by the load (external force) applied to the hinge 10 and the knuckle pin 40 Damage can be prevented.

The lower gate 20 can be safely opened and closed together with the upper gate 30 as shown in FIG. 5 by stably maintaining the folded state of the upper gate 30 in parallel with the lower gate 20 Not only the safety and convenience of the operation is maximized but also the upper gate 30 is prevented from being freely shaken while the vehicle is running, thereby reducing the noise while increasing the safety of the running.

In addition, the skirt 24 and the bottom cap 70 of the lower gate smoothly cover the bracket 12 of the hinge 10 to minimize the exposure thereof, and the knuckle pin 40 is provided to the lower gate 20 Since the curved surface of the gate 30 is continuously and smoothly reduced to reduce the gap, it is possible to improve not only the functionality but also the design aesthetic feeling.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. It will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Therefore, the contents relating to the modification and application of the technical features of the present invention should be interpreted as being included in the technical idea and scope of the present invention.

10: Hinge 11: Bracket
12: bracket 20: bottom gate
21: Knuckle 22: Home
23: interference prevention groove 24: skirt
25: fitting groove 26: fitting protrusion
30: upper gate 31: knuckle
32: groove 33: interference prevention groove
40: knuckle pin 41: stopper
50: bulb 60: holder
61: elastic support member 62: retaining member
63: fixing groove 65: housing
66: through hole 67: collar
70: bottom cap 71: fitting groove
72: fitting projection 80: buffering fitting
81: contact projection F: bottom
S: Side frame

Claims (3)

A plurality of hinges attached to a side frame, one of the brackets forming the bottom of the lorry loading box;
A bottom gate having a lower portion fixed to the other bracket of the hinge, a cylindrical groove-like knuckle for connection at an upper portion thereof, and an interference preventing groove formed at a center portion of the outer surface;
An upper gate having a cylindrical groove-type knuckle for connection at the lower portion and an interference preventing groove formed at a center portion of the outer surface;
A knuckle pin interconnecting the knuckle of each of the upper and lower gates so as to be freely rotatable within a predetermined angular range;
A bulb fixed on the interference preventing groove of the upper gate so as not to cause contact interference with the lower gate while the upper gate and the lower gate are folded in parallel with each other; And
Wherein the upper gate and the lower gate are fixed on the interference preventing groove of the lower gate so as not to cause contact interference with the upper gate in a state where the upper gate and the lower gate are folded in parallel to each other, And a holder for relieving and holding the bulb;
A lorry loading box.
The method according to claim 1,
Wherein the knuckle of each of the upper and lower gates and the knuckle pin are formed with grooves in the respective knuckles so as to rotate within a range of 90 degrees opposite to each other and a stopper corresponding to the groove is formed in the knuckle pin,
Wherein the bulb protrudes outward at an angle of 10 to 20 degrees with respect to a vertical plane of the upper gate,
Wherein the holder has a resilient fulcrum formed at the center thereof with a constraining groove corresponding to the shape of the free end of the bulb and elastically deformed by elasticity when receiving an external force;
A housing which is fixed on the interference preventing groove of the lower gate by wrapping around the elastic holder and has a through hole communicating with the restricting groove to allow the end of the bulb to pass therethrough;
A lorry loading box.
3. The method of claim 2,
The lower gate includes a skirt for covering the other bracket of the hinge at a lower portion of the outer surface, a fitting groove portion and a fitting projection at a lower portion of the inner surface,
And the other of the brackets of the hinge fixed to the lower gate is interposed between the fitting grooves and the fitting protrusions of the lower gate, and the fitting grooves and the fitting protrusions corresponding to the fitting grooves and the fitting protrusions of the lower gate are formed Bottom cap; And
A plurality of contact protrusions are formed at regular intervals so as to be softly contacted with the opposed faces of the side frames when the bottom gate contacts the opposed faces of the side frames, Buffer tight fitting;
A cargo truck.

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