KR102522210B1 - Device for locking reardoor of loading box - Google Patents

Abstract

The present invention relates to a locking device for a rear door of a loading box, and more particularly, to a locking device for fixing a rear door of a loading box to a side door, comprising: a locking rod protruding outward from one side of the rear door; A coupling end coupled to the upper side of the rear end surface of the side door, a mounting cylinder portion coupled to the outside of the coupling stage and having an open end on the rear side, and an outer surface having an open surface inside the mounting cylinder portion and a lever through-hole on the outside. holder with sides; a locker that is inserted into the mounting cylinder and has an open end on one side of the insertion cylinder, and an open surface on the inside and a closed surface on the outside of the insertion cylinder; and a lever coupled to the outside of the closed surface of the locker to rotate the locker within the mounting cylindrical portion by a rotational operation.

Description

Loading box rear door lock {Device for locking rear door of loading box}

The present invention relates to a loading box rear door locking device.

In the case of the locking device of the existing commercial vehicle loading box, it is mainly made of pulling the locking bar and hanging it on the ring (hook).

1 shows a conventional loading box rear door locking device when locked, and FIG. 2 shows a loading box rear door locking device when unlocking in the related art.

As shown in FIGS. 1 and 2, the existing loading box rear door locking device includes a hook (hook) 6 installed on the side door 2, a nut 4 installed on the rear door 1, and a string 5 , It can be seen that it is configured to include a L-shaped locking bar 3 and the like, and the locking bar 3 is hooked and fixed to the hook 6.

When the rear door (1) is opened, the conventional loading box rear door lock operates and opens as shown in FIG. ) (6), pull the rod (3) toward the ring (6) through the nut (4) and the spring (5) to fix the loading box to prevent noise and unlocking of the locking device during driving.

However, in the past, in the form of pushing the bar and hooking it to the hook, paint detachment occurred due to adhesion between the locking bar and the rear door, making it impossible to operate smoothly due to rusting problems. Injury to the hand area (iron condyle) may occur.

Republic of Korea Utility Model Publication No. 20-2000-0018710 Republic of Korea Patent No. 197020 Republic of Korea Utility Model Publication No. 20-1999-0024569

Therefore, the present invention has been made to solve the above conventional problems, and according to an embodiment of the present invention, it is possible to increase durability according to rust prevention, to minimize the force required during operation, and to change the operation method. It is an object of the present invention to provide a loading box rear door locking device that can prevent injury and can operate smoothly even when rusting occurs due to external factors.

And according to the embodiment of the present invention, unlike the conventional locking device, the friction area between the locking rod and the interference part is small, and the moving distance is short, so rust prevention is possible, and the spring tension is overcome because the structure pushes and pulls up and down during operation. The load box rear door locking device, which can minimize the force applied to the door, prevent injuries that can occur when pushing the existing locking bar, and even when rusting occurs, has a small friction area between the locking bar and the locking device, enabling smooth operation. Its purpose is to provide

On the other hand, the technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems that are not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

An object of the present invention is to provide a locking device for fixing a rear door of a loading box to a side door, comprising: a locking rod protruding outward from one side of the rear door; A coupling end coupled to the upper side of the rear end surface of the side door, a mounting cylinder portion coupled to the outside of the coupling stage and having an open end on the rear side, and an outer surface having an open surface inside the mounting cylinder portion and a lever through-hole on the outside. holder with sides; a locker that is inserted into the mounting cylinder and has an open end on one side of the insertion cylinder, and an open surface on the inside and a closed surface on the outside of the insertion cylinder; and a lever coupled to the outside of the closed surface of the locker to rotate the locker within the mounting cylindrical portion by a rotational operation.

And the lever includes an engaging part coupled to the locker closing surface and an operating part bent and connected to the engaging part, and further comprising an elastic member provided between the locker closing surface and the outer surface of the holder. can

In addition, when locking the rear door, the lever is rotated so that the open end of the insertion cylinder is located at the open end of the mounting cylinder, and the rear door is closed to insert the locking rod into the inner space of the insertion cylinder, Rotating the lever to close the open end of the mounting cylinder, and when the rear door is opened, rotate the lever so that the open end of the insertion cylinder is positioned at the open end of the mounting cylinder, and then open the rear door. that can be characterized.

And an insertion end protruding outward from one side of the outer surface of the insertion cylinder; a circumferential groove formed along a circumferential direction on an inner surface of the mounting cylinder so that the insertion end is located when the lever rotates and guides rotation of the insertion cylinder; and a locking fixing groove formed inwardly on one side of the circumferential groove to position the insertion end when locking the rear door and fixing the rotation of the lever, and formed inwardly on the other side of the circumferential groove to position the insertion end when the rear door is opened. It may be characterized in that it includes; a fixing groove for opening to fix the rotation of the lever in this position.

In addition, when locking the rear door, pull the lever outward to move the insertion end from the locking fixing groove toward the circumferential groove, and rotate the lever so that the open end of the insertion cylinder is located at the open end of the mounting cylinder. The insertion end is located in the fixing groove for opening, and after closing the rear door to insert the lock rod into the inner space of the insertion cylinder, pull the lever outward to move the insertion end into the fixing groove for opening. moves toward the circumferential groove and rotates the lever to close the open end of the mounting cylinder and place the insertion end in the locking fixing groove, and when the rear door is opened, pull the lever outward to open the insertion end. Move the locking fixing groove toward the circumferential groove and rotate the lever so that the open end of the insertion cylinder is located at the open end of the mounting cylinder, position the insertion end in the opening fixing groove, and open the rear door It can be characterized as doing.

According to the loading box rear door locking device according to an embodiment of the present invention, it is possible to increase durability due to rust prevention, to minimize the force required for operation, to prevent injury according to a change in operation method, and to prevent external factors. It has the effect of enabling smooth operation even when a rusting phenomenon occurs.

In addition, according to the loading box rear door locking device according to an embodiment of the present invention, unlike the conventional locking device, the friction area between the locking rod and the interference part is small, and the moving distance is short, so rust prevention is possible, and during operation, pushing and pulling up and down Due to its structure, it is possible to minimize the force to overcome the spring tension, prevent injuries that may occur when pushing the existing locking bar, and even when rust occurs, smooth operation is possible as the frictional area between the locking bar and the locking device is small. have an effect

On the other hand, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the invention serve to further understand the technical idea of the present invention, the present invention is limited only to those described in the drawings. and should not be interpreted.
1 is a conventional loading box rear door locking device when locking,
2 is a loading box rear door locking device at the time of conventional unlocking;
3 is a photograph of a truck with a conventional rusting phenomenon;
4 is an exploded perspective view of a loading box rear door locking device according to an embodiment of the present invention;
5 is a rear door to which a loading box rear door locking device according to an embodiment of the present invention is attached when locked;
6 is a front view of the loading box rear door locking device according to an embodiment of the present invention when open;
7 is a cross-sectional view (left), front view (right),
Figure 8a is a partial cross-sectional view of the loading box rear door locking device in a lever rotation operating state according to an embodiment of the present invention
8B is a partial cross-sectional view of a loading box rear door locking device in a lever locking state according to an embodiment of the present invention.

The above objects, other objects, features and advantages of the present invention will be easily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it may be directly formed on the other element or a third element may be interposed therebetween. Also, in the drawings, the thickness of components is exaggerated for effective description of technical content.

Embodiments described in this specification will be described with reference to cross-sectional views and/or plan views, which are ideal exemplary views of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content. Accordingly, the shape of the illustrated drawings may be modified due to manufacturing techniques and/or tolerances. Therefore, embodiments of the present invention are not limited to the specific shape shown, but also include changes in the shape generated according to the manufacturing process. For example, a region shown at right angles may be rounded or have a predetermined curvature. Accordingly, the regions illustrated in the drawings have attributes, and the shapes of the regions illustrated in the drawings are intended to illustrate a specific shape of a region of a device and are not intended to limit the scope of the invention. Although terms such as first and second are used to describe various elements in various embodiments of the present specification, these elements should not be limited by these terms. These terms are only used to distinguish one component from another. Embodiments described and illustrated herein also include complementary embodiments thereof.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. The terms 'comprises' and/or 'comprising' used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, several specific contents are prepared to more specifically describe the invention and aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not greatly related to the invention are not described in order to prevent confusion for no particular reason in explaining the present invention.

Hereinafter, the structure, function, and operation method of the loading box rear door locking device according to an embodiment of the present invention will be described.

First, FIG. 4 is an exploded perspective view of a loading box rear door locking device according to an embodiment of the present invention.

5 shows a rear door to which the loading box rear door locking device according to an embodiment of the present invention is attached when locked, and FIG. 6 is a front view of the loading box rear door locking device according to an embodiment of the present invention when opened. it is depicted

4 to 6, the loading box rear door locking device 100 according to the embodiment of the present invention includes a locking rod 50, a holder 10, a locker 20, and an elastic member (spring, 30). , It can be seen that it can be configured including the lever 40 and the like.

As shown in FIGS. 5 and 6 , it can be seen that the locking rod 50 has a straight shape, is installed to protrude outward from the upper side of the side end surface of the rear door 1, and has a fixed shape.

Holder 10 is configured to be coupled to the upper side of the rear end surface of the side door (2).

The holder 10 has a coupling end 11 coupled to the upper side of the rear end surface of the side door 2, and a mounting cylindrical portion 12 coupled to the rear outer side of the coupling end 11 and having an open end on a portion of the outer surface. It is composed of.

And as shown in FIG. 4 , the inner side of the mounting cylindrical portion 12 is configured as an open surface, and the outer side is configured to have an outer surface 15 having a lever through hole 16 .

The locker 20 is configured to be inserted into the mounting cylindrical portion 12 and rotated within the mounting cylindrical portion 12 by a lever 40 described later.

The locker 20 has an insertion cylindrical portion 21 having an open end on one side of the outer surface, and the inside of the insertion cylindrical portion 21 is composed of an open surface and the outside is composed of a closed surface 23.

The lever 40 is fixedly coupled to the outside of the closed surface 23 of the insertion cylindrical portion 21, and is configured to allow the locker 20 to rotate within the mounting cylindrical portion 12 of the holder 10 by a rotational operation. .

In addition, the lever 40 includes a coupling portion 41 coupled to the closing surface 23 of the locker 20 and an operating portion 42 bent and connected to the coupling portion 41, the operating portion 42 A rubber packing 43 may be installed on a part of the outer surface.

In addition, an elastic member 30 composed of a spring or the like is interposed between the closing surface 23 of the locker 20 and the outer surface 15 of the holder 10.

Therefore, when the rear door 1 is locked, the lever 40 is rotated so that the open end of the insertion cylinder 21 is positioned at the open end of the mounting cylinder 12 to open, and the rear door 1 is closed to lock The rod 50 is inserted into the inner space of the insertion cylindrical portion 21. Then, the open end of the mounting cylindrical portion 12 is closed by the locker 20 by rotating the lever 40 again.

Also, when the rear door 1 is opened, the lever 40 is rotated so that the open end of the insertion cylinder 21 is located at the open end of the mounting cylinder 12, and then the rear door 1 will open

7 illustrates a cross-sectional view (left) and a front view (right) of a loading box rear door locking device according to an embodiment of the present invention when locked. 8A is a partial cross-sectional view of the loading box rear door locking device in a rotational operating state of the lever 40 according to an embodiment of the present invention. 8B is a partial cross-sectional view of the loading box rear door locking device in a locked state of the lever 40 according to an embodiment of the present invention.

As shown in FIGS. 8A and 8B , it can be seen that an insertion end 22 protruding outward is formed on one side of the outer surface of the insertion cylindrical portion 21 .

In addition, a circumferential groove 13, a fixing groove 14 for locking, and a fixing groove 14 for opening are formed on the inner surface of the mounting cylindrical portion 12 of the holder 10.

The circumferential groove 13 is formed along the circumferential direction on the inner surface of the mounting cylindrical portion 12 so that the insertion end 22 is positioned and guides the rotation of the insertion cylindrical portion 21 when the lever 40 rotates.

In addition, the fixing groove 14 for locking is formed inwardly on one side of the circumferential groove 13 so that when the rear door 1 is locked, the insertion end 22 is positioned to fix the rotation of the lever 40. Also, the fixing groove 14 for opening is formed inwardly on the other side of the circumferential groove 13 so that the insertion end 22 is positioned when the rear door 1 is opened to fix the rotation of the lever 40.

Therefore, when the rear door 1 is locked, the insertion end 22 is moved from the fixing groove 14 for locking to the circumferential groove 13 by pulling the lever 40 outward and rotating the lever 40 to insert the cylindrical portion. The open end of (21) is located at the open end of the mounting cylindrical portion (12), and at this time, the insertion end (22) is located in the fixing groove (14) for opening. Then, close the rear door (1) to insert the lock rod (50) into the inner space of the insertion cylindrical portion (21), and then pull the lever (40) outward again to open the insertion end (22) to the fixing groove (14) for opening. is moved toward the circumferential groove 13 and the lever 40 is rotated to close the open end of the mounting cylindrical portion 12 and place the insertion end 22 in the fixing groove 14 for locking.

Also, when the rear door (1) is opened, the insertion end (22) is moved from the fixing groove (14) for locking to the circumferential groove (13) by pulling the lever (40) outward and inserting it by rotating the lever (40). The open end of the cylindrical portion 21 is located at the open end of the mounting cylindrical portion 12, so that the insertion end 22 is placed in the fixing groove 14 for opening. Then, the rear door 1 is opened.

Therefore, according to the loading box rear door locking device 100 according to the embodiment of the present invention, unlike the conventional locking device, the friction area between the locking bar and the interference part is small and the moving distance is short, so that rust prevention is possible. Since it is a structure that pushes and pulls up and down, the force to overcome the spring tension can be minimized, and injuries that can occur when pushing the existing locking bar can be prevented, and the friction area between the locking bar and the locking device is small even when rust occurs. Therefore, smooth operation is possible.

In addition, the device and method described above are not limited to the configuration and method of the above-described embodiments, but all or part of each embodiment is selectively combined so that various modifications can be made. may be configured.

1: rear door
2: side door
3: A-shaped lock bar
4: Nut
5: spring
6: Hook (hook)
10: holder
11: binding end
12: mounting cylinder
13: Wonju Home
14: fixed groove
15: outer side
16: Lever through hole
20: Locker
21: insertion cylinder
22: insertion end
23: closed side
30: elastic member
40: lever
41: coupling part
42: operation part
43: rubber packing
50: lock bar
100: loading box rear door lock

Claims (5)

In the locking device for fixing the rear door of the loading box to the side door,
a locking rod installed to protrude outward from one side of the rear door;
A coupling end coupled to the upper side of the rear end surface of the side door, a mounting cylinder portion coupled to the outside of the coupling stage and having an open end on the rear side, and an outer surface having an open surface inside the mounting cylinder portion and a lever through-hole on the outside. holder with sides;
a locker that is inserted into the mounting cylinder and has an open end on one side of the insertion cylinder, and an open surface on the inside and a closed surface on the outside of the insertion cylinder; and
and a lever coupled to the outside of the locker's closed surface to rotate the locker within the mounting cylindrical portion by a rotational operation.
According to claim 1,
The lever includes a coupling portion coupled to the locker closing surface and an operating portion bent and connected to the coupling portion,
The loading box rear door locking device further comprises an elastic member provided between the locker closing surface and the outer surface of the holder.
According to claim 2,
When locking the rear door,
Rotate the lever so that the open end of the insertion cylinder is positioned at the open end of the mounting cylinder, close the rear door to insert the lock rod into the inner space of the insertion cylinder, and rotate the lever to Close the open end of the mounting cylinder,
When the rear door is open,
and opening the rear door after rotating the lever so that the open end of the insertion cylinder is located at the open end of the mounting cylinder.
According to claim 3,
an insertion end protruding outward from one side of an outer surface of the insertion cylinder;
a circumferential groove formed along a circumferential direction on an inner surface of the mounting cylinder so that the insertion end is located when the lever rotates and guides rotation of the insertion cylinder; and
A fixing groove for locking formed inwardly on one side of the circumferential groove to position the insertion end when locking the rear door and fixing the rotation of the lever, and formed inwardly on the other side of the circumferential groove so that the insertion end is positioned when the rear door is opened A loading box rear door locking device comprising a; fixing groove for opening to be positioned to fix rotation of the lever.
According to claim 4,
When locking the rear door,
By pulling the lever outward, the insertion end is moved from the fixing groove for locking to the circumferential groove, and the lever is rotated so that the open end of the insertion cylinder is positioned at the open end of the mounting cylinder, and the insertion end is positioned in the open end of the mounting cylinder. After closing the rear door to insert the lock rod into the inner space of the insertion cylinder, pull the lever outward to move the insertion end from the opening fixing groove toward the circumferential groove. and rotate the lever to close the open end of the mounting cylinder and place the insertion end in the fixing groove for locking,
When the rear door is open,
By pulling the lever outward, the insertion end is moved from the locking fixing groove toward the circumferential groove, and the lever is rotated so that the open end of the insertion cylinder is located at the open end of the mounting cylinder, thereby moving the insertion end to the open end of the mounting cylinder. Loading box rear door locking device, characterized in that located in the fixing groove for opening the rear door.

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