A heavy-duty hinge

Abstract

This invention discloses a heavy-duty hinge, comprising an upper hinge and a lower hinge, and a rotating shaft rotatably engaged between the upper and lower hinges. Drive components are mounted on both sides of the rotating shaft, each including a drive motor, a positioning chuck, and a limiting disc. The two ends of the drive motor are connected to the bottom of the positioning chuck, and the limiting discs are mounted on both ends of the rotating shaft. The positioning chuck has slots arranged in a circular array, and at least two limiting arms are axially rotatably mounted on the limiting disc, engaging with the slots. A positioning component is located on the lower hinge facing the positioning chuck, comprising an abutment part, a spring part, and a base. The base is mounted on the lower hinge, and the abutment part abuts against the spring part, which is located on the base. One end of the abutment part forms a limiting abutment with the slot. This invention can adjust the impact force of repeated opening and closing of heavy doors or covers, allowing the cover to open and close smoothly and at a uniform speed, and has low manufacturing and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of hinge technology, and more specifically to a heavy-duty hinge. Background Technology

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two solid objects and allow relative rotation between them. Hinges can consist of movable components or be made of foldable materials. Heavy-duty hinges, due to their special installation location, have very high requirements. They are generally over 150mm in size, have a large load-bearing capacity, and their shape conforms to the special structure of cabinet doors. They are commonly used in large doors such as those in cold storage rooms and freezers, and are mostly made of zinc alloy.

[0003] Hinges are widely used in industrial equipment. Hinges are commonly used to connect movable, detachable parts such as doors and lids to other components (e.g., cans). However, current technology generally uses manual opening and closing. Because the lids are often heavy, manual opening can easily result in excessive opening or rotational loads, causing significant wear on the hinge's rotating structure. Furthermore, the heavy lid generates a greater inertial impact when closing, making it impossible to achieve consistent closing speed manually. Over time, this affects the seal between the lid and the main body. Summary of the Invention

[0004] The purpose of this invention is to provide a heavy-duty hinge that can adjust the impact force when repeatedly opening and closing heavy doors or covers, so that the cover can be opened and closed smoothly and at a uniform speed, and the manufacturing and maintenance costs are low.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty hinge, comprising an upper hinge and a lower hinge, and a rotating shaft rotatably engaged between the upper hinge and the lower hinge. A drive assembly is mounted on both sides of the rotating shaft. The drive assembly includes a drive motor, a positioning chuck, and a limiting disc. Both ends of the drive motor are connected to the bottom of the positioning chuck. The limiting disc is mounted on both ends of the rotating shaft. The positioning chuck has slots arranged in a circular array. At least two limiting arms are axially rotatably mounted on the limiting disc and engage with the slots. A positioning assembly is provided on the side of the lower hinge facing the positioning chuck. The positioning assembly includes an abutment portion, a spring portion, and a base. The base is mounted on the lower hinge. The abutment portion abuts against the spring portion and is disposed on the base. One end of the abutment portion forms a limiting abutment with the slot.

[0006] By adopting the above technical solution, when the drive motor drives the positioning chuck to rotate, the slot on the positioning chuck rotates to the limiting arm on the limiting disc, and simultaneously drives the limiting part to rotate. When the limiting arm rotates, it drives the limiting disc, the rotating shaft and the upper hinge to rotate synchronously. The upper hinge drives the cover to open at a uniform speed. The angle can also be adjusted as needed by using the abutment part on the positioning component to lock in the slot to form a limit. At the same time, when the drive motor is closed, the clamping force between the limiting arm and the slot can be used to share the load pressure, avoiding the local structure from bearing the weight of the entire cover. Conversely, when the cover is closed, the drive motor rotates in the opposite direction to close the cover. The abutment part, the limiting arm and the slot are respectively clamped and locked. The overall structure is divided into two parts to adjust the impact force when the cover is repeatedly opened and closed, so that the cover can be opened and closed smoothly and at a uniform speed. Moreover, the manufacturing and maintenance costs are low.

[0007] The present invention is further configured such that the limiting disc is provided with a fixing sleeve and a semi-circular protrusion, the fixing sleeve is connected to the semi-circular protrusion and sleeved on the rotating shaft, the limiting arm is provided with a positioning panel and a positioning post, the positioning panel is inclined and connected to the semi-circular protrusion, one end of the positioning post is connected to the positioning panel, and the other end extends toward the center of the positioning chuck.

[0008] By adopting the above technical solution, the fixing sleeve is used to hinge with the rotating shaft to improve synchronization and coordination. At the same time, a semi-circular protrusion is set on one side of the fixing sleeve to connect with the limiting arm, which reduces the length that needs to be extended when the positioning panel is tilted, improves the structural strength between the positioning post and the positioning panel, and makes the overall structure less prone to breakage.

[0009] The invention is further configured such that the positioning chuck has arc-shaped grooves arranged in a ring array, the arc-shaped grooves are in contact with semi-circular protrusions, and the chuck slots are formed between two adjacent arc-shaped grooves.

[0010] By adopting the above technical solution, when the positioning chuck rotates, the arc groove fits against the semi-circular protrusion, which can prevent the rotating shaft and the limiting disc from bearing excessive pressure, thus playing a certain supporting and protective role.

[0011] The present invention is further configured such that a positioning flange is provided on the rotating shaft, the positioning flange is arranged in a ring array on the outer circumferential surface of the rotating shaft, and a positioning groove adapted to the positioning flange is provided on the fixing sleeve, the fixing sleeve being snapped onto the positioning flange through the positioning groove.

[0012] By adopting the above technical solution, the fixed sleeve is locked to the positioning flange on the rotating shaft through the positioning groove, which improves the structural strength of the rotating shaft, and at the same time, the positioning groove plays a limiting role.

[0013] The present invention is further configured such that: a positioning hole is provided at the bottom of the positioning chuck; a limiting post is inserted into the positioning hole; a limiting flange is provided on the limiting post; a limiting groove matching the limiting flange is provided on the positioning hole; a connecting rod is connected to the drive motor; a bevel gear is hinged to the connecting rod; and a helical gear that forms a rotational engagement with the bevel gear is hinged to the limiting post.

[0014] By adopting the above technical solution, bevel gears are hinged at both ends of the connecting rod of the drive motor, and a helical gear that rotates with the bevel gear is set at the bottom of the positioning chuck. This has good load-bearing capacity and linkage. Furthermore, the combination of helical gears and bevel gears can eliminate gaps and improve accuracy.

[0015] The invention is further configured such that the lower hinge has a limiting opening for the extension and retraction of the abutment portion, the abutment portion has a limiting panel facing the lower hinge, the limiting panel has a fixing groove for installing the elastic portion, the base has a limiting sleeve corresponding to the fixing groove, one end of the elastic portion is pressed against the fixing groove, the other end is pressed against the limiting sleeve, and the base has bolts, and the base is fixed to the lower hinge by bolts.

[0016] By adopting the above technical solution, the abutting part is pressed against the outer peripheral surface of the positioning chuck by the elastic part, and the abutting part can be limited by the limiting panel during the extension and retraction process. The two ends of the elastic part are respectively installed in the fixing groove and the limiting sleeve, which stabilizes the elastic part during the extension and retraction stroke. The base adopts a structure of bolt connection to the lower hinge, which has a good supporting and fixing effect.

[0017] The present invention is further configured such that the abutting part is provided in an arc shape near the positioning side, and the arc shape is provided with inclined surfaces on both sides.

[0018] By adopting the above technical solution, when the positioning chuck rotates clockwise and counterclockwise, the inclined surfaces on both sides of the abutment part play a role in making way, which can prevent the abutment part and the positioning chuck from getting stuck. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the driving component and the positioning component of the present invention;

[0021] Figure 3 This is a cross-sectional view of the driving component and the positioning component of the present invention;

[0022] Figure 4 This is an enlarged view of part A of the present invention;

[0023] Figure 5This is a schematic diagram of the structure of the contact part of the present invention.

[0024] In the diagram: 1. Upper hinge; 2. Lower hinge; 3. Rotating shaft; 4. Drive assembly; 5. Drive motor; 8. Positioning chuck; 9. Limiting disc; 10. Slot; 11. Limiting arm; 12. Positioning assembly; 13. Abutment part; 14. Elastic part; 15. Base; 16. Fixing sleeve; 17. Semi-circular protrusion; 18. Positioning panel; 19. Positioning post; 20. Arc groove; 21. Positioning flange; 22. Positioning groove; 23. Positioning hole; 24. Limiting post; 25. Limiting flange; 26. Limiting groove; 27. Connecting rod; 28. Bevel gear; 29. ​​Helical gear; 30. Limiting opening; 31. Limiting panel; 32. Fixing groove; 33. Limiting sleeve; 34. Bolt; 35. Inclined surface. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: As attached Figures 1-5The heavy-duty hinge shown includes an upper hinge 1, a lower hinge 2, and a rotating shaft 3 rotatably engaged between the upper hinge 1 and the lower hinge 2. A drive assembly 4 is mounted on both sides of the rotating shaft 3. The drive assembly 4 includes a drive motor 5 (specifically a dual-head rotary motor), two positioning chucks 8, and two limiting discs 9. The two ends of the drive motor 5 are respectively connected to the bottom of the positioning chuck 8. The limiting discs 9 are mounted on both ends of the rotating shaft 3. The positioning chuck 8 has a circular array of... The lower hinge 2 has four to six equally spaced slots 10. At least two limiting arms 11, which engage with the slots 10, are axially rotatably mounted on the limiting disc 9. Two positioning components 12 (corresponding to the positioning disc 8) are provided on the side of the lower hinge 2 facing the positioning chuck 8. Each positioning component 12 includes an abutment part 13, a spring part 14 (three springs in total), and a base 15. The base 15 is mounted on the lower hinge 2, and the abutment part 13 abuts against the spring part. Part 14 is mounted on base 15. One end of the abutting part 13 forms a limiting abutment with the slot 10. When the drive motor 5 drives the positioning chuck 8 to rotate, the slot 10 on the positioning chuck 8 rotates to the limiting arm 11 on the limiting disc 9, and simultaneously drives the limiting part to rotate. When the limiting arm 11 rotates, it drives the limiting disc 9, the rotating shaft 3, and the upper hinge 1 to rotate synchronously. The upper hinge 1 drives the cover to open at a uniform speed. The angle can also be adjusted as needed by using the abutting part 13 on the positioning assembly 12 to lock it in the slot 1. Within 0, a limit is formed, and at the same time, the drive motor 5 is closed. The clamping force between the limit arm 11 and the slot 10 can share the load pressure, avoiding the local structure from bearing the weight of the entire cover. Conversely, when the cover is closed, the drive motor 5 is also rotated in the opposite direction to close the cover. The abutment part 13, the limit arm 11 and the slot 10 are respectively clamped and abutted. The overall structure is divided into two parts to adjust the impact force when the cover is repeatedly opened and closed, so that the cover can be opened and closed smoothly and at a uniform speed, and the manufacturing and maintenance costs are low.

[0027] As attached Figure 2As shown, the limiting disc 9 is provided with a fixing sleeve 16 and a semi-circular protrusion 17 (which are integral structures). The fixing sleeve 16 is connected to the semi-circular protrusion and sleeved on the rotating shaft 3. The limiting arm 11 is provided with a positioning panel 18 and a positioning post 19 (which are integral structures). The positioning panel 18 is inclined and connected to the semi-circular protrusion 17. One end of the positioning post 19 is connected to the positioning panel 18, and the other end extends toward the axis of the positioning chuck 8. The fixing sleeve 16 is used to hinge with the rotating shaft 3 to improve synchronization and coordination. At the same time, the semi-circular protrusion 17 is provided on one side of the fixing sleeve 16 and connected to the limiting arm 11, which reduces the length that the positioning panel 18 needs to extend due to its inclined setting, and improves the structural strength between the positioning post 19 and the positioning panel 18, making the overall structure less prone to breakage.

[0028] As attached Figure 2 and attached Figure 5 As shown, the positioning chuck 8 has arc-shaped grooves 20 arranged in a circular array (the specific number corresponds to the grooves 10, which is 4 to 6). The arc-shaped grooves 20 are in contact with the semi-circular protrusions 17 (when the limiting post 24 is locked in the groove 10, the arc-shaped grooves 20 and the semi-circular protrusions 17 are in contact; when the limiting post 24 rotates out of the groove 10, the semi-circular protrusions 17 and the arc-shaped grooves 20 are separated). The grooves 10 are opened between two adjacent arc-shaped grooves 20. When the positioning chuck 8 rotates, the contact between the arc-shaped grooves 20 and the semi-circular protrusions can prevent the rotating shaft 3 and the limiting disc 9 from bearing excessive pressure, thus playing a certain supporting and protective role.

[0029] As attached Figure 3 As shown, the rotating shaft 3 is provided with a positioning flange 21 (which is an integral structure). The positioning flange 21 is arranged in a ring array on the outer circumferential surface of the rotating shaft 3. The fixing sleeve 16 is provided with a positioning groove 22 that matches the positioning flange 21. The fixing sleeve 16 is engaged with the positioning flange 21 through the positioning groove 22. The fixing sleeve 16 is locked to the positioning flange 21 on the rotating shaft 3 through the positioning groove 22, which improves the structural strength of the rotating shaft 3. At the same time, the positioning groove 22 plays a limiting role.

[0030] As attached Figure 3As shown, the positioning chuck 8 has a positioning hole 23 at its bottom, a limiting post 24 is inserted into the positioning hole 23, a limiting flange 25 (an integral structure) is provided on the limiting post 24, and a limiting groove 26 that matches the limiting flange 25 is provided on the positioning hole 23. A connecting rod 27 is connected to the drive motor 5, a bevel gear 28 is hinged to the connecting rod 27, and a helical gear 29 that rotates with the bevel gear is hinged to the limiting post 24. The bevel gears 28 are hinged at both ends of the connecting rod 27 of the drive motor 5, and the helical gear 29 that rotates with the bevel gear 28 is provided at the bottom of the positioning chuck 8. This provides good load-bearing capacity and linkage, and the combination of the helical gear 29 and the bevel gear can eliminate gaps and improve accuracy.

[0031] As attached Figure 4 As shown, the lower hinge 2 has a limiting opening 30 for the extension and retraction of the abutment part 13. The abutment part 13 is provided with a limiting panel 31 (an integral structure) facing the lower hinge 2. The limiting panel 31 has a fixing groove 32 for installing the elastic part 14 (the specific number is 3, corresponding to the number of elastic parts 14). The base 15 is provided with a limiting sleeve 33 (an integral structure) corresponding to the fixing groove 32. One end of the elastic part 14 is pressed against the fixing groove 32, and the other end is pressed against the limiting sleeve 33. Inside the sleeve 33, the base 15 is provided with bolts 34, and the base 15 is fixed to the lower hinge 2 by bolts 34. The abutment part 13 is pressed against the outer peripheral surface of the positioning chuck 8 by the elastic part 14, and the abutment part 13 can be limited by the limiting panel 31 during the extension and retraction process. The two ends of the elastic part 14 are respectively installed in the fixing groove 32 and the limiting sleeve 33, which stabilizes the elastic part 14 during the extension and retraction stroke. The base 15 adopts the structure of being connected to the lower hinge 2 by bolts 34, which has a good supporting and fixing effect.

[0032] As attached Figure 5 As shown, the abutment part 13 is arranged in an arc shape near the positioning side, and the arc shape is provided with inclined surfaces 35 on both sides. When the positioning chuck 8 rotates clockwise and counterclockwise, the inclined surfaces 35 on both sides of the abutment part 13 play a role in making way, which can prevent the abutment part 13 and the positioning chuck 8 from getting stuck.

Claims

1. A heavy-duty hinge, comprising an upper hinge (1) and a lower hinge (2) and a rotating shaft (3) rotatably engaged between the upper hinge (1) and the lower hinge (2), characterized in that: The rotating shaft (3) is equipped with drive components (4) on both sides. The drive components (4) include a drive motor (5), a positioning chuck (8), and a limiting disc (9). The two ends of the drive motor (5) are respectively connected to the bottom of the positioning chuck (8). The limiting disc (9) is installed at both ends of the rotating shaft (3). The positioning chuck (8) has slots (10) arranged in a circular array. The limiting disc (9) is axially rotatably provided with at least two limiting arms (11) that engage with the slots (10). The lower hinge (2) is provided with a positioning component (12) facing the positioning chuck (8). The positioning component (12) includes an abutment part (13), a spring part (14), and a base (15). The base (15) is mounted on the lower hinge (2), and the abutting part (13) abuts against the elastic part (14) and is disposed on the base (15). One end of the abutting part (13) forms a limiting abutment with the slot (10). The limiting disc (9) is provided with a fixing sleeve (16) and a semi-circular protrusion (17). The fixing sleeve (16) is connected to the semi-circular protrusion (17) and sleeved on the rotating shaft (3). The limiting arm (11) is provided with a positioning panel (18) and a positioning post (19). The positioning panel (18) is inclined and connected to the semi-circular protrusion (17). One end of the positioning post (19) is connected to the positioning panel (18), and the other end extends toward the axis of the positioning chuck (8).

2. A heavy-duty hinge according to claim 1, characterized in that: The positioning chuck (8) has arc-shaped grooves (20) arranged in a ring array. The arc-shaped grooves (20) fit into the semi-circular protrusions (17). The slot (10) is opened between two adjacent arc-shaped grooves (20).

3. A heavy-duty hinge according to claim 1, characterized in that: The rotating shaft (3) is provided with a positioning flange (21), which is arranged in a ring array on the outer circumferential surface of the rotating shaft (3). The fixing sleeve (16) is provided with a positioning groove (22) that matches the positioning flange (21). The fixing sleeve (16) is engaged with the positioning flange (21) through the positioning groove (22).

4. A heavy-duty hinge according to claim 1, characterized in that: The positioning chuck (8) has a positioning hole (23) at its bottom. A limiting post (24) is inserted into the positioning hole (23). A limiting flange (25) is provided on the limiting post (24). A limiting groove (26) matching the limiting flange (25) is provided on the positioning hole (23). A connecting rod (27) is connected to the drive motor (5). A bevel gear (28) is hinged on the connecting rod (27). A helical gear (29) that rotates with the bevel gear is hinged on the limiting post (24).

5. A heavy-duty hinge according to claim 1, characterized in that: The lower hinge (2) has a limiting opening (30) for the extension and retraction of the abutment part (13). The abutment part (13) has a limiting panel (31) facing the lower hinge (2). The limiting panel (31) has a fixing groove (32) for installing the elastic part (14). The base (15) has a limiting sleeve (33) corresponding to the fixing groove (32). One end of the elastic part (14) is pressed against the fixing groove (32), and the other end is pressed against the limiting sleeve (33). The base (15) has a bolt (34) and is fixed to the lower hinge (2) by the bolt (34).

6. A heavy-duty hinge according to claim 1, characterized in that: The abutting part (13) is arranged in an arc shape near the positioning side, and the arc shape is provided with inclined surfaces (35) on both sides.

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