Hinge structure for folding container

Abstract

The invention discloses a hinge structure for a folding container, which is characterized by comprising a box body hinge plate, a middle hinge plate and a door frame hinge plate, and the box body hinge plate and the door frame hinge plate are respectively hinged on two sides of the middle hinge plate and can overturn relative to the middle hinge plate. After the rotating mechanism is applied to the container, the door frame and the container door can rotate by 270 degrees, so that the door frame and the container door are overlapped on the outer side wall of the container in parallel, and overlapping storage and unloading of the container are facilitated.

Description

Technical Field

[0001] This invention relates to the field of container hinges, and more particularly to a hinge structure for folding containers, used at the rear of containers. Background Technology

[0002] Containerized sea freight often arrives at its destination without any return cargo, but the empty containers need to be transported to other places to carry new goods. Empty containers are large in volume and light in weight. In order to save on freight costs, foldable containers are needed to enable empty container transportation after folding, thus saving costs.

[0003] In existing technology, a container structure generally includes a container body, door frames located at both ends of the container body, and two double-opening doors mounted on the door frames. The hinge structure for mounting the doors to the door frames includes a hinge pin and two hinge plates (the two hinge plates can also be a hinge seat and a single hinge plate), with the two hinge plates mounted on the door frame and the door respectively. When opened, the doors mounted using the above hinges cannot fold parallel to the outer wall of the container body, and the entire container cannot be effectively folded; therefore, further improvements are needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a hinge structure for folding containers, which, when applied to the rear of the container, enables the door frame and door to rotate 270°, allowing the door frame and door to overlap parallel to the outer wall of the container, thus reducing the volume of the container after folding.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hinge structure for a folding container, characterized in that it includes a container hinge plate, a middle hinge plate, and a door frame hinge plate, wherein the container hinge plate and the door frame hinge plate are respectively hinged to both sides of the middle hinge plate and can be flipped relative to the middle hinge plate.

[0007] Preferably, a first hinge sleeve is provided on both sides of the middle hinge plate, and a second hinge sleeve is provided on the side of the box hinge plate and the door frame hinge plate facing the middle hinge plate. The first hinge sleeve and the second hinge sleeve are mated and provided with hinge pins.

[0008] The second hinge sleeve is bent away from the mounting surfaces of the box hinge plate and the door frame hinge plate, while the first hinge sleeve and the second hinge sleeve are bent in the same direction.

[0009] Preferably, a hinge cover is connected to the mounting surface of the container hinge plate, and the container hinge plate is installed onto the container body through the hinge cover.

[0010] Preferably, the hinge back cover is connected to the housing hinge plate by screws.

[0011] Preferably, the hinge back cover and the housing hinge plate have connecting holes for screws to pass through, and the back of the housing hinge plate has countersunk holes corresponding to the connecting holes.

[0012] Preferably, the hinge rear cover has a positioning groove on the side facing the hinge plate of the housing, and the mounting surface of the hinge plate of the housing has a positioning bracket that mates with the positioning groove.

[0013] Preferably, the width of the positioning groove gradually increases from the bottom of the groove to the opening of the groove.

[0014] Preferably, the positioning groove is an annular structure and is coaxially arranged with the connecting hole.

[0015] The advantages of this invention are:

[0016] 1. The container hinge plate, the middle hinge plate and the door frame hinge plate form a three-fold folding structure, which is installed between the container body and the door frame. This allows the door frame and the door to rotate 270° on the container body, so that the door frame and the door are parallel and close to the same side outer wall of the container body after rotation, further reducing the thickness of the container after folding and facilitating the stacking of containers.

[0017] 2. The bending design of the first hinge sleeve and the second hinge sleeve can prevent the outer walls of the first hinge sleeve and the second hinge sleeve from rubbing against the mounting surface of the third party when the housing hinge plate, the middle hinge plate and the door frame hinge plate rotate relative to each other.

[0018] 3. The hinge plate of the cabinet is connected to the hinge cover by screws and installed on the cabinet, which can facilitate the disassembly and assembly of the door frame and the cabinet door relative to the cabinet;

[0019] 4. The cooperation between the positioning groove and the positioning plate can improve the accuracy and stability of the installation position of the hinges and the door on the box body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the hinge structure for the folding container provided in this embodiment;

[0021] Figure 2 This is a cross-sectional view of the hinge structure for the folding container provided in this embodiment;

[0022] Figure 3 This is a top view of the hinge provided in this embodiment being used on a container in a folded state.

[0023] Figure 4 This is a top view of the hinge provided in this embodiment being used on a container in its unfolded state.

[0024] Figure 5 The side view shows the hinge provided in this embodiment being used on a container in its unfolded state. Detailed Implementation

[0025] Combination Figures 1 to 5 The hinge structure for the folding container of the present invention will be further described.

[0026] A hinge structure for a folding container is characterized by comprising a container hinge plate 1, a middle hinge plate 2, and a door frame hinge plate 3, wherein the container hinge plate 1 and the door frame hinge plate 3 are respectively hinged to both sides of the middle hinge plate 2 and are capable of flipping relative to the middle hinge plate 2.

[0027] In the container installation structure, the front of the container hinge plate 1 is the mounting surface 13, which is used to assemble onto the outer side wall at the rear of the container body 9. Figure 3 , 4 As shown in Figure 5, the front side of the door frame hinge plate 3 is the mounting surface 32, used for assembly onto the door frame 10. Figure 3 , 4 As shown in Figure 5, the door frame 10 and the door on the door frame are rotated 270° relative to the box body, so that when the door frame 10 is in the open state, it can be pressed against the same outer side wall of the box body 9. Figure 3 As shown. Specifically, when the door frame 10 is in the closed state, the housing hinge plate 1, the intermediate hinge plate 2, and the door frame hinge plate 3 are in a straight line, and the end face of the door frame 10 is attached to the end face of the housing 9, as shown. Figure 4 As shown; when in the open folding state, the middle hinge plate 2 rotates 90° relative to the box body hinge plate 1, causing the entire door frame 10 to rotate 90° around the box body hinge plate 1 along with the middle hinge plate 2, separating the end face of the door frame 10 from the end face of the box body. Then, the door frame hinge plate 3 rotates 180° relative to the middle hinge plate 2, causing the door frame 10 to overlap parallel to the side wall of the box body, as shown. Figure 3 As shown. During the opening process, the hinge structure and the door frame 10 will not interfere with the rear position of the housing 9, allowing the door frame 10 to open smoothly and rest against the outer wall of the housing.

[0028] A first hinge sleeve 21 is provided on both sides of the middle hinge plate 2, and a second hinge sleeve 31 is provided on the side of the box hinge plate 1 and the door frame hinge plate 3 facing the middle hinge plate 2. The first hinge sleeve 21 and the second hinge sleeve 31 are connected and a hinge pin 5 is provided to realize the rotational connection between the box hinge plate 1, the middle hinge plate 2 and the door frame hinge plate 3.

[0029] The second hinge sleeve 31 is bent away from the mounting surfaces of the housing hinge plate 1 and the door frame hinge plate 3. The first hinge sleeve 21 and the second hinge sleeve 31 are bent in the same direction, so that the first hinge sleeve 21 and the second hinge sleeve 31 are located behind the mounting surfaces or flush with the mounting surfaces. Figure 2As shown, this structure allows the mounting surface 13 of the hinge plate 1 of the housing to rest smoothly against the mounting surface of the housing 9, and the mounting surface 32 of the hinge plate 3 of the door frame to rest smoothly against the mounting surface of the door frame 10. At the same time, it ensures that the first hinge sleeve 21 and the second hinge sleeve 31 do not interfere with the housing 9 and the door frame 10 when they rotate.

[0030] A hinge back cover 4 is connected to the mounting surface 13 of the container hinge plate 1. The container hinge plate 1 is installed on the container body through the hinge back cover 4. The hinge back cover 4 is connected to the container hinge plate 1 by multiple screws 6. The side of the hinge back cover 4 facing away from the container hinge plate 1 is fixed to the container body 9 by welding. This structure facilitates the disassembly and removal of the container hinge plate 1 relative to the hinge back cover 4 and the container body 9.

[0031] The hinge plate 1 and the hinge back cover 4 of the housing have connecting holes 7 that mate with each other and allow screws 6 to pass through. On the back of the hinge plate 1 of the housing, there is a countersunk hole 8 corresponding to the connecting hole 7, which allows the head 61 of the screw 6 to be hidden.

[0032] The hinge back cover 4 has multiple positioning grooves 41 on the side facing the hinge plate 1 of the housing, and the mounting surface 13 of the hinge plate 1 of the housing has multiple positioning brackets 11 that cooperate with the positioning grooves 41. Through the cooperation of the positioning grooves 41 and the positioning brackets 11, it is easy to accurately assemble the hinge plate 1 of the housing onto the hinge back cover 4, and it can also ensure stable use after assembly, avoiding the problem of relative sliding of the hinge plate 1 of the housing relative to the hinge back cover 4, which would cause the position of the door frame 10 to change.

[0033] The width of the positioning groove 41 gradually increases from the bottom to the opening, making the opening of the positioning groove 41 larger, which makes it easier for the positioning plate 11 to be inserted into the positioning groove 41.

[0034] The positioning groove 41 is an annular structure and is coaxially arranged with the connecting hole 7. That is, the positioning groove 41 and the positioning bracket 11 are annular structures, and the connecting hole 7 is located at the center of the positioning groove 41 and the positioning bracket 11. With this structure, when tightening the screw 6, the engagement force between the positioning groove 41 and the positioning bracket 11 is even, and the positioning bracket 11 is stably pressed into the positioning groove 41. This ensures both the stability and accuracy during assembly, as well as the stability and structural strength during subsequent use.

[0035] Unless otherwise specified, in this invention, terms such as "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0036] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A hinge structure for a folding container, characterized in that: It includes a housing hinge plate, a middle hinge plate, and a door frame hinge plate. The housing hinge plate and the door frame hinge plate are respectively hinged to both sides of the middle hinge plate and can be rotated relative to the middle hinge plate.

2. The hinge structure for a folding container according to claim 1, characterized in that: in The middle hinge plate has a first hinge sleeve on both sides, and a second hinge sleeve on the side of the box hinge plate and the door frame hinge plate facing the middle hinge plate. The first hinge sleeve and the second hinge sleeve are connected and are provided with hinge pins. The second hinge sleeve is bent away from the mounting surfaces of the box hinge plate and the door frame hinge plate, while the first hinge sleeve and the second hinge sleeve are bent in the same direction.

3. The hinge structure for a folding container according to claim 1, characterized in that: A hinge cover is connected to the mounting surface of the container hinge plate, and the container hinge plate is installed onto the container body through the hinge cover.

4. The hinge structure for a folding container according to claim 3, characterized in that: The hinge cover is connected to the hinge plate of the box body by screws.

5. The hinge structure for a folding container according to claim 4, characterized in that: The hinge back cover and the housing hinge plate have connection holes for screws to pass through, and there are countersunk holes on the back of the housing hinge plate corresponding to the connection holes.

6. The hinge structure for a folding container according to claim 3, characterized in that: The hinge back cover has a positioning groove on the side facing the hinge plate of the housing, and the mounting surface of the hinge plate of the housing has a positioning bracket that mates with the positioning groove.

7. The hinge structure for a folding container according to claim 6, characterized in that: The width of the positioning groove gradually increases from the bottom to the opening.

8. The hinge structure for a folding container according to claim 7, characterized in that: The positioning groove is an annular structure and is coaxially arranged with the connecting hole.

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