A hinge mechanism for securing around a post

Abstract

The utility model discloses a kind of around column fixed hinge mechanism, it is related to hinge technical field, can adapt narrow installation space, satisfy the demand of inside opening door body. Including hinge piece and hinge plate being pivotally arranged to each other;Hinge piece is fixedly installed in the left side of stand, the left side and the right side of stand are respectively provided with mounting hole, side hole, hinge piece includes fixed arm part, fixed arm part is equipped with the protruding sleeve table, the internal thread hole is opened in this sleeve table, sleeve table passes through the mounting hole and extends into the inside of stand, and fixed part is connected on sleeve table;Hinge plate is bent into Z shape and includes sequentially connected connecting portion, bending portion and hinge portion, and bending portion covers side hole in the door body closed state and opens side hole in the door body opening state. Adapt to the installation environment of narrow periphery of stand, solve the problem that traditional hinge cannot be effectively installed under this scene, simultaneously, hinge plate avoids both stand front side, and can avoid door body movement track, realize the inside opening activation that traditional hinge cannot complete.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a hinge mechanism that is fixed around a column. Background Technology

[0002] Currently, the hinge structures for cabinets, equipment frames, and other products mainly include external hinges, side-mounted hinges, or three-point support hinges. These structures generally install the cabinet door on the side wall of the cabinet or the edge of the door frame via hinges, and the door rotates to open around its own side axis. However, in some special layouts or space-constrained applications, the design requires the cabinet door to rotate inward around the uprights (such as corner posts or reinforcing posts) inside the cabinet to meet the needs of structural opening and closing and internal space utilization.

[0003] However, there are currently no hinge mechanisms specifically designed for fixing around a support column on the market. Existing door designs are unsuitable for inward rotation around a column. For example, if the door needs to open inwards into a cabinet, one hinge plate must be mounted on the support column. The front side of the column is exposed and unsuitable for installation. The left and rear sides of the column are inside the cabinet, where the space is limited and operation cannot be performed without avoiding the door. Even the only relatively spacious right side is difficult to operate due to the inability to avoid the hinge and door. Therefore, the fixing structure of traditional hinges is ill-suited for narrow spaces and inward-opening door scenarios, making effective installation impossible. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a column-fixed hinge mechanism that can adapt to narrow installation spaces and meet the requirements of inward-opening doors.

[0005] The technical solution of this utility model is as follows: The door is configured to connect to the uprights of a cabinet, allowing the door to rotate inwards around the uprights. The uprights are square and hollow, with a front side, a rear side, a left side, and a right side. The hinge mechanism includes a hinge component and a hinge plate pivotally connected to each other. The hinge component is fixedly installed on the left side of the upright. The left and right sides of the upright have mounting holes and side holes, respectively. The hinge component includes a fixed arm with a protruding sleeve. An internally threaded hole is formed in the sleeve, which extends through the mounting hole into the inside of the upright. A fixing component is connected to the sleeve. The hinge plate is Z-shaped and includes a connecting part, a bent part, and a hinged part connected sequentially. The bent part is perpendicular to the connecting part and the hinged part, respectively. The connecting part is fixedly connected to the door, and the hinged part is rotatably connected to the hinge component. The hinged part can conform to the rear side of the upright to form a rotation limit. The bent part covers the side hole when the door is closed and opens the side hole when the door is open.

[0006] By adopting the above technical solution, the hinge is fixed to the left side of the column, and a fixing component is inserted into the side hole open when the door is open to connect with the mounting bracket. The installation position is brought to the inside of the column from the right side. There is no need to reserve a large operating space on the narrow left side, rear side, or difficult-to-operate right side. It successfully adapts to the narrow installation environment around the column and solves the problem that traditional hinges cannot be effectively installed in this scenario. At the same time, the hinge plate adopts a Z-shaped bending structure. The Z-shaped hinge plate goes around the right side and rear side of the column, avoiding the front side of the column and avoiding the movement trajectory of the door, realizing the inward opening action that traditional hinges cannot complete. In addition, when the door is rotated to the closed state, the hinge part can fit against the rear side of the column to form a rotation limit, and the bending part can fit against the right side of the column to form a closing limit. The double limit structure can effectively prevent damage to the door caused by over-closing or damage to the sealing structure on the outside of the door due to excessive compression.

[0007] In one possible design, the hinge component also includes a sleeve portion and a positioning plate portion. The sleeve portion is located on one side of the fixed arm portion and has a rotating shaft passing through it. The positioning plate portion bends and extends from the sleeve portion toward the rear side of the column to fit against the rear side of the column. The hinge portion has a positioning hole, and the positioning plate portion is embedded in the positioning hole.

[0008] The above design achieves two goals: firstly, the hinge is positioned by fitting the positioning plate to the rear side; secondly, the positioning plate and the positioning hole restrict the displacement of the hinge plate in the closed state, preventing the door from shaking due to loosening of the rotating parts after long-term use, thus extending the service life of the hinge and ensuring the long-term stable operation of the door.

[0009] In one possible design, the bent portion is inserted into the side hole, and the upper and lower side walls of the side hole and the two sides of the bent portion are fitted together to form a closing limit.

[0010] The above design constrains the bending part in the vertical direction, so that when the door is closed, the bending part only moves along the side hole wall, avoiding deviation, improving the accuracy of the closing limit, and ensuring that the door is in the preset position every time it is closed.

[0011] In one possible design, the fasteners include a cover plate and fastening screws. The cover plate is fitted to the inner wall of the column, and the fastening screws pass through the cover plate and are screwed into the internal threaded hole of the sleeve.

[0012] The above design further optimizes the fixing method between the hinge and the column, solving the problems of unreliable fixing of traditional hinges and inconvenience in adapting to hollow columns, especially suitable for scenarios where the inner space of the column is narrow in the background technology. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the usage state of this utility model. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the usage state of this utility model. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the structure of the present invention in its open state. Figure 1 ;

[0016] Figure 4 This is a schematic diagram of the structure of the present invention in its open state. Figure 2 ;

[0017] Figure 5 This is a schematic diagram of the structure of the present invention in its closed state (the columns are omitted).

[0018] Figure 6 This is a schematic diagram of the structure of the present invention in the open state (the column is omitted).

[0019] Figure 7 This is a cross-sectional view of the present invention in its closed state;

[0020] Among them, 1. Column; 11. Front side; 12. Rear side; 13. Left side; 14. Right side; 141. Side hole;

[0021] 2. Hinge component; 21. Fixed arm; 211. Sleeve platform; 212. Internal threaded hole; 22. Sleeve section; 23. Positioning plate section;

[0022] 3. Hinge plate; 31. Connecting part; 311. Fixing hole; 32. Bending part; 33. Hinge joint; 331. Positioning hole;

[0023] 4. Door body; 5. Hinge; 6. Fixture; 61. Cover plate; 62. Fastening screws. Detailed Implementation

[0024] like Figures 1 to 7 The diagram illustrates a hinge mechanism fixed around a column. The column 1 of the cabinet to which the hinge is mounted is a square hollow structure (the cabinet is shown in dashed lines in the diagram). Its front side 11 is exposed outside the cabinet or placed inside and attached to the back of the cabinet door frame. The rear side 12, left side 13, and right side 14 are all located inside the cabinet. The left side 13 and rear side 12 are located on the back of the door 4 regardless of whether the door 4 is open or closed, making assembly impossible. The right side 14 is located on the side visible from the doorway. Mounting holes for the hinge assembly 211 must be pre-drilled on the left side 13 of the column 1, and side holes 141 for the bending portion 32 of the hinge plate 3 must be pre-drilled on the right side 14. The door 4 is a standard cabinet door panel, its dimensions matching the position of the column 1, ensuring that the door 4 completely covers the cabinet opening when rotating around the column.

[0025] The hinge mechanism includes a hinge component 2 and a hinge plate 3, which are pivotally engaged via a pivot 5. The hinge component 2 is integrally formed and consists of a fixed arm portion 21, a sleeve portion 22, and a positioning plate portion 23. A cylindrical sleeve 211 is provided on one side of the fixed arm portion 21. The axis of the sleeve 211 is perpendicular to the surface of the fixed arm portion 21. An internal threaded hole 212 is formed inside the sleeve 211 along the axis. The diameter of the internal threaded hole 212 is adapted to the subsequent fixing component 6. The sleeve portion 22 is located on one side of the fixed arm portion 21 and is in the shape of a hollow cylinder. Its axis is parallel to the surface of the fixed arm portion 21. The positioning plate portion 23 is bent from the tangential side wall of the sleeve portion 22 toward the rear side 12 of the column 1. The bending angle between the positioning plate portion 23 and the fixed arm portion 21 is 90°. The size of the positioning plate portion 23 is adapted to the size of the positioning hole 331 of the subsequent hinge portion 33.

[0026] The hinge plate 3 is made of metal sheet bent into a "Z" shape, and includes a connecting part 31, a bending part 32 and a hinge part 33 in sequence. The connecting part 31 is a rectangular plate with two to six fixing holes 311 on its surface for connection with the door body 4. The surface of the connecting part 31 has a stamped indentation to enhance the structural strength of the plate-shaped connecting part 31. The bending part 32 is perpendicular to the connecting part 31, and its length is adapted to the width of the right side 14 of the column 1. The hinge part 33 is perpendicular to the bending part 32 and parallel to the connecting part 31. One end of the hinge part 33 has a shaft hole adapted to the pivot 5, and the hinge part 33 has a positioning hole 331 adapted to the positioning plate part 23. The shape of the positioning hole 331 is consistent with the cross-section of the positioning plate part 23.

[0027] The fastener 6 includes a cover plate 61 and a fastening screw 62. The cover plate 61 is fitted to the inner wall of the column 1, and the fastening screw 62 passes through the cover plate 61 and is screwed into the internal threaded hole 212 of the sleeve 211. The cover plate 61 can fit the rectangular metal plate of the inner wall of the column 1, and its surface has through holes corresponding to the internal threaded hole 212 of the sleeve 211.

[0028] The component assembly process is as follows: First, install the pre-assembled hinge mechanism onto the door 4, that is, fix it to the door 4 through the connecting part 31. Place the door 4 into the cabinet and adjust it to the correct position. Second, align the hinge piece 211 of the hinge piece 2 with the mounting hole on the left side 13 of the column 1, and push the fixing arm 21 so that the hinge piece 211 passes through the mounting hole and extends into the inside of the column 1 until the surface of the fixing arm 21 is completely in contact with the left side 13 of the column 1. Then, remove the cover plate 61 and attach it. On the inner wall of the column 1, align the through hole of the cover plate 61 with the internal threaded hole 212 of the sleeve 211; finally, take the fastening screw 62, pass the fastening screw 62 through the through hole of the cover plate 61 and screw it into the internal threaded hole 212 of the sleeve 211 until the screw head presses against the cover plate 61. At this time, the hinge component 2 is stably fixed to the left side 13 of the column 1 through the dual structure of positioning by the sleeve 211 and pressing by the cover plate 61, and the fixing operation is completed entirely inside the column 1 without occupying the narrow space outside the column 1. The hinge mechanism of this application is suitable for scenarios where it is installed around a column and the door 4 opens inward, especially for situations where the pre-installed hinge cannot be disassembled.

[0029] When the door 4 is closed, pulling the door 4 towards the cabinet doorway causes the door 4 to rotate synchronously with the connecting part 31 of the hinge plate 3. The hinge part 33 of the hinge plate 3 rotates around the pivot 5 towards the rear side 12 of the column 1 until the surface of the hinge part 33 is completely in contact with the rear side 12 of the column 1. At this time, the hinge part 33 is blocked by the rear side 12 of the column 1, and the door 4 cannot continue to rotate inward, thus forming a rotation limit. At the same time, the bent part 32 of the hinge plate 3 rotates with the door 4 and is embedded in the side hole 141 of the right side 14 of the column 1. The upper and lower side holes 141 of the side hole 141 and the two sides of the bent part 32 form a clearance fit, constraining the bent part 32 in the vertical direction and preventing the door 4 from shifting vertically. At this time, the bent part 32 completely covers the side hole 141 of the right side 14 of the column 1, which can prevent external dust and debris from entering the interior of the column 1 through the side hole 141, thus realizing the protective function of the side hole 141.

[0030] When the door 4 is opened, it is pushed to rotate inward into the cabinet. The door 4 drives the connecting part 31 of the hinge plate 3 to move in the opposite direction. The hinge part 33 of the hinge plate 3 moves away from the rear side 12 of the column 1 around the pivot 5. The positioning plate part 23 is separated from the positioning hole 331 of the hinge part 33. At the same time, the bending part 32 gradually disengages from the side hole 141 on the right side 14 of the column 1 as the door 4 rotates, until the door 4 rotates to the maximum opening angle (usually 90°-120°, depending on the internal space of the cabinet). At this time, the bending part 32 completely disengages from the side hole 141, and the side hole 141 is in the open state, which can be used for the installation of the hinge of the column 1 or subsequent maintenance operations. During the entire opening process, the "Z"-shaped structure of the hinge plate 3 always avoids the movement trajectory of the door 4 and the column 1, and there is no interference between the parts. The door 4 opens and closes smoothly.

Claims

1. A hinge mechanism fixed around a column, configured to connect a door (4) to a column (1) of a cabinet, such that the door (4) rotates around the column (1) to open inward, wherein the column (1) is a square hollow shape and has a front side (11), a rear side (12), a left side (13), and a right side (14); characterized in that: The hinge mechanism includes a hinge component (2) and a hinge plate (3) pivotally connected to each other; the hinge component (2) is fixedly installed on the left side (13) of the column (1), and the left side (13) and right side (14) of the column (1) are respectively provided with mounting holes and side holes (141). The hinge component (2) includes a fixed arm (21), and the fixed arm (21) is provided with a protruding sleeve (211). The sleeve (211) is provided with an internal thread hole (212). The sleeve (211) passes through the mounting hole and extends into the inside of the column (1). A fixing component (6) is connected to the sleeve (211). The hinge plate (3) is formed by bending in a Z-shape and includes a connecting part (31), a bending part (32) and a hinge part (33) connected in sequence. The bending part (32) is perpendicular to the connecting part (31) and the hinge part (33) respectively. The connecting part (31) is fixedly connected to the door body (4). The hinge part (33) is rotatably connected to the hinge component (2). The hinge part (33) can fit against the rear side (12) of the column (1) to form a rotation limit. The bending part (32) covers the side hole (141) when the door body (4) is closed and opens the side hole (141) when the door body (4) is open.

2. The hinge mechanism for fixing around a column according to claim 1, characterized in that: The hinge component (2) further includes a sleeve portion (22) and a positioning plate portion (23). The sleeve portion (22) is located on one side of the fixed arm portion (21) and a rotating shaft (5) passes through it. The positioning plate portion (23) bends and extends from the sleeve portion (22) toward the rear side (12) of the column (1) to fit against the rear side (12) of the column (1). The hinge portion (33) has a positioning hole (331) and the positioning plate portion (23) is embedded in the positioning hole (331).

3. The hinge mechanism for fixing around a column according to claim 1 or 2, characterized in that: The upper and lower side walls of the side hole (141) and the two sides of the bent part (32) are fitted together to form a closing limit.

4. The hinge mechanism for fixing around a column according to claim 1 or 2, characterized in that: The fastener (6) includes a cover plate (61) and a fastening screw (62). The cover plate (61) is fitted to the inner wall of the column (1), and the fastening screw (62) passes through the cover plate (61) and is screwed to the internal thread hole (212) of the sleeve (211).

Images