Heavy free door hinge device and free door

Abstract

The utility model provides a heavy type free door hinge device and a free door, the hinge device comprises a V-shaped hinge assembly arranged at the top of the free door, the V-shaped hinge assembly comprises a V-shaped hinge and a fixed seat assembly, the V-shaped hinge comprises an arc-shaped slideway and a return groove, the return groove is connected with the arc-shaped slideway, and the fixed seat assembly is connected with the V-shaped hinge. The height of the arc-shaped slide way is gradually reduced from one end far away from the return groove to the return groove; the fixed seat assembly comprises a rolling bearing, and the rolling bearing is used for moving along the arc-shaped slide way; the free door is connected with the V-shaped hinge assembly through a connecting rod and used for automatically returning under the action of the V-shaped hinge and the rolling bearing. By arranging the V-shaped hinge and the fixing seat assembly, the rolling bearing of the fixing seat assembly can move along the arc-shaped slide way, the free door can automatically return under the action of the V-shaped hinge and the rolling bearing, the gravity of the door leaf is converted into power for closing the door leaf, people are not prone to being hurt, the door can be automatically closed, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-collision free doors, and particularly relates to a heavy-duty free door hinge device and a free door. Background Art

[0002] In recent years, with the increasing requirements of various production enterprises or units for doors, anti-collision free doors have been widely installed and used. They are often used in places such as supermarkets, food factories, central kitchens, airport catering, electronic workshops, hospital corridors, cold storage buffer rooms, etc. Today, the editor will take you to understand the advantages and characteristics of anti-collision free doors. Anti-collision free doors are also called anti-collision free doors, free doors, and free impact doors. The door panels are made of stainless steel materials, and anti-collision rubber plates are added on both sides of the door body. They can be opened bidirectionally by collision and can automatically close by gravity after people or objects pass through. They are non-electric doors with the characteristics of being firm, impact-resistant, and having a long service life, meeting the requirements of various industrial environments.

[0003] Anti-collision free doors have the following characteristics: Anti-collision free doors can allow people or objects to pass through quickly, greatly simplifying a series of actions such as stopping, opening, passing through, and then closing the door required by traditional single-leaf doors, thereby greatly improving work efficiency. Free doors can be freely opened in two directions by means of hand pushing, hand carts, or even forklift impacts, and will automatically close after people or objects pass through. The door panel material of free doors is stainless steel, with good anti-collision and impact resistance. Anti-collision free doors can be used between the sales area and the storage area, between the food processing area and the refrigeration area, between the office area and the warehouse, between the dining area and the kitchen, and any place where different areas need to be separated. While improving work efficiency, they can reduce noise, maintain environmental hygiene, and reduce the energy loss caused by the convection of cold and warm air. Traditional electric and pneumatic doors are complex to install and expensive to maintain and repair. In contrast, free doors do not require electricity, are simple and quick to install, and are convenient and fast to maintain and repair. At the same time, free doors can effectively control the flow of moisture and dust between different areas. The characteristic of quickly and automatically closing also enables free doors to minimize energy loss to the greatest extent. Anti-collision free doors adopt an eccentric door shaft design, enabling the door to open freely in both directions and then automatically close by its own gravity. The impact-resistant upper and lower door hinges integrate excellent mechanical properties, reduce mechanical wear, and have a long service life. They are simple and quick to install, do not require electricity during use, and are convenient to maintain.

[0004] At present, most anti-collision free doors still have the following problems: The return force of the eccentric shaft hinge on the free door is too small, and the door leaf cannot return to the proper position, resulting in the door not closing tightly; and the elastic force of the existing eccentric shafts is generally not easy to control. If the force is too small, the door cannot close tightly; if the force is too large, it is easy to injure people. Content of the Utility Model

[0005] The utility model provides a heavy-duty free door hinge device and a free door to solve the technical problem that the existing free door has too small a return force and the door leaf cannot return to the proper position, resulting in the door not closing tightly.

[0006] The solution provided by the present utility model is as follows:

[0007] A heavy-duty free door hinge device, the hinge device includes a V-shaped hinge assembly arranged at the top of the free door, the V-shaped hinge assembly includes a V-shaped hinge and a fixed seat assembly, the V-shaped hinge includes an arc-shaped slideway and a return groove, the return groove is connected to the arc-shaped slideway, and the height of the arc-shaped slideway gradually decreases from the end far away from the return groove towards the return groove; the fixed seat assembly includes a rolling bearing, and the rolling bearing is used to move along the arc-shaped slideway; the free door is connected to the V-shaped hinge assembly through a connecting rod, and is used to automatically return under the action of the V-shaped hinge and the rolling bearing.

[0008] Further, the arc-shaped slideway in the V-shaped hinge includes a first arc-shaped slideway and a second arc-shaped slideway, the first arc-shaped slideway and the second arc-shaped slideway are arranged on both sides of the return groove, the heights of the first arc-shaped slideway and the second arc-shaped slideway gradually decrease along the end connected to the return groove, and the first arc-shaped slideway, the return groove and the second arc-shaped slideway form a V-shaped structure.

[0009] Further, the V-shaped hinge further includes a first limiting cylinder arranged at the central position of the V-shaped hinge, and the first limiting cylinder is used to limit the connecting rod passing through the first limiting cylinder.

[0010] Further, a shock absorption device is also provided on the first limiting cylinder.

[0011] Further, the fixed seat assembly further includes a second limiting cylinder, the connecting rod passes through the second limiting cylinder and is fixedly connected to the second limiting cylinder.

[0012] Further, a mounting seat is provided on one side of the second limiting cylinder, the mounting seat is provided with a downward opening, and the rolling bearing is installed in the opening through a pin shaft.

[0013] Further, the hinge device further includes a base assembly arranged at the bottom of the free door, the base assembly includes a base, a third limiting cylinder is provided on the base, and the connecting rod is inserted into the third limiting cylinder.

[0014] Further, a spring is also provided in the third limiting cylinder, and the spring is fixedly connected to the connecting rod.

[0015] The present utility model also provides a free door, including the above-mentioned heavy-duty free door hinge device.

[0016] The present utility model has the following beneficial effects:

[0017] (1) In the heavy-duty self-closing door hinge device of the present utility model, by providing a V-shaped hinge and a fixed seat assembly, the rolling bearing of the fixed seat assembly can move along the arc-shaped slideway. The self-closing door is connected to the V-shaped hinge assembly through a connecting rod, and can automatically return to its original position under the action of the V-shaped hinge and the rolling bearing, converting the self-weight of the door leaf into the power for closing the door leaf, which is not easy to hurt people and can also make the door close automatically, facilitating operation.

[0018] (2) The present utility model also installs a return spring on the base at the bottom of the self-closing door, so that when the self-closing door returns to its original position, under the combined action of its own gravity and the pulling force of the spring, the door leaf can be accurately and automatically reset. Description of the Drawings

[0019] Figure 1 It is a schematic structural view of the self-closing door of the preferred embodiment of the present utility model;

[0020] Figure 2 It is a schematic structural view of the fixed seat assembly of the preferred embodiment of the present utility model;

[0021] Figure 3 It is a schematic structural view of the V-shaped hinge of the preferred embodiment of the present utility model;

[0022] Figure 4 It is a schematic structural view of the base assembly of the preferred embodiment of the present utility model.

[0023] In the figure: 1. V-shaped hinge; 2. Fixed seat assembly; 3. Arc-shaped slideway; 4. Return groove; 5. Self-closing door; 6. Connecting rod; 7. Rolling bearing; 8. Pin shaft; 9. First limiting cylinder; 10. Shock-absorbing device; 11. Second limiting cylinder; 12. Base assembly; 13. Third limiting cylinder; 14. Spring. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] See Figures 1 to 4, an embodiment of the first aspect of the present utility model provides a heavy-duty free door hinge device. The hinge device includes a V-shaped hinge assembly provided at the top of the free door 5. The V-shaped hinge assembly includes a V-shaped hinge 1 and a fixed seat assembly 2. The V-shaped hinge 1 includes an arc-shaped slideway 3 and a return groove 4. The return groove 4 is connected to the arc-shaped slideway 3. The height of the arc-shaped slideway 3 gradually decreases from the end away from the return groove 4 towards the return groove 4. The fixed seat assembly 2 includes a rolling bearing 7, and the rolling bearing 7 is used to move along the arc-shaped slideway 3. The free door 5 is connected to the V-shaped hinge assembly through a connecting rod 6 and is used to automatically return under the action of the V-shaped hinge 1 and the rolling bearing 7.

[0026] The above-mentioned V-shaped hinge 1 is provided with threaded holes for installation. During use, the V-shaped hinge 1 is fixedly installed on the door frame by screws. The return groove 4 and the arc-shaped slideway 3 in the V-shaped hinge 1 form a V-shaped structure with higher sides and a lower middle. The fixed seat assembly 2 is arranged above the V-shaped hinge 1. The connecting rod 6 of the free door 5 passes through the V-shaped hinge 1 and is fixedly connected to the fixed seat assembly 2. Since the rolling bearing 7 on the fixed seat assembly 2 can move on the arc-shaped slideway 3 of the V-shaped hinge 1. When the free door 5 is pushed open by an external force, the free door 5 drives the fixed seat assembly 2 to move upward along the arc-shaped slideway 3 through the rolling bearing 7, so that the free door 5 is opened. After the external force disappears, the free door 5 moves downward along the arc-shaped slideway 3 under the action of its own gravity and falls back into the return groove 4, realizing the automatic closing of the free door 5 without worrying about the door rebounding and hitting again.

[0027] In the heavy-duty free door 5 hinge device of the present utility model, by setting the V-shaped hinge 1 and the fixed seat assembly 2, the rolling bearing 7 of the fixed seat assembly 2 can move along the arc-shaped slideway 3. The free door 5 is connected to the V-shaped hinge assembly through the connecting rod 6 and can automatically return under the action of the V-shaped hinge 1 and the rolling bearing 7, converting the self-gravity of the door leaf into the power for closing the door leaf, which is not easy to hurt people and can also make the door automatically close, facilitating operation.

[0028] See Figure 3 , in this embodiment, the arc-shaped slideway 3 in the V-shaped hinge 1 includes a first arc-shaped slideway and a second arc-shaped slideway. The first arc-shaped slideway and the second arc-shaped slideway are arranged on both sides of the return groove 4. The heights of the first arc-shaped slideway and the second arc-shaped slideway gradually decrease along the end connected to the return groove 4. The first arc-shaped slideway, the return groove 4 and the second arc-shaped slideway form a V-shaped structure. The above-mentioned first arc-shaped slideway and second arc-shaped slideway are arranged on both sides of the return groove 4 to enable the free door 5 to move along the first arc-shaped slideway and the second arc-shaped slideway, thereby realizing the opening and automatic return of the free door 5 in different directions.

[0029] In this embodiment, the V-shaped hinge 1 further includes a first limiting cylinder 9 disposed at the central position of the V-shaped hinge 1. The first limiting cylinder 9 is used to limit the connecting rod 6 passing through the first limiting cylinder 9. During use, the connecting rod 6 on the free door 5 passes through the first limiting cylinder 9 from bottom to top and then is connected to the fixed seat assembly 2. The first limiting cylinder 9 can prevent the free door 5 from shaking during the opening and falling-back processes and avoid inaccurate return of the free door 5. One end of the connecting rod 6 on the free door 5 away from the V-shaped hinge 1 is fixed to the free door 5 by screws.

[0030] In this embodiment, a shock-absorbing device 10 is further provided on the first limiting cylinder 9. The shock-absorbing device 10 is made of an elastic material, preferably a nylon sleeve. The nylon sleeve has good wear resistance, can effectively reduce the friction between the V-shaped hinge 1 and the fixed seat assembly 2, and at the same time its shock-absorbing and vibration-absorbing characteristics can also reduce the noise when the free door 5 is opened and falls back.

[0031] See Figure 2 , in this embodiment, the fixed seat assembly 2 further includes a second limiting cylinder 11. The connecting rod 6 passes through the second limiting cylinder 11 and is fixedly connected to the second limiting cylinder 11. The second limiting cylinder 11 is used to fix the connecting rod 6, and the second limiting cylinder 11 is coaxially arranged with the first limiting cylinder 9, so that during the opening and automatic closing processes of the free door 5, the free door 5 can drive the fixed seat assembly 2 to rotate relative to the first limiting cylinder 9.

[0032] In this embodiment, one side of the second limiting cylinder 11 is provided with a mounting seat. The mounting seat is provided with a downward opening. The rolling bearing 7 is installed in the opening through a pin shaft 8. By providing the rolling bearing 7 in this application, it is more labor-saving for the rolling bearing 7 to move along the first arc-shaped slideway or the second arc-shaped slideway during the opening process of the free door 5. At the same time, when the free door 5 is closed, the free door 5 automatically falls back more smoothly.

[0033] See Figure 4 , in this embodiment, the hinge device further includes a base assembly 12 disposed at the bottom of the free door 5. The base assembly 12 includes a base. A third limiting cylinder 13 is provided on the base. The connecting rod 6 is inserted into the third limiting cylinder 13. The connecting rod 6 below the free door 5 is fixedly installed on the free door 5 by screws, and the end away from the free door 5 is inserted into the third limiting cylinder 13, so that the free door 5 can run along a set track when it is opened and closed.

[0034] In this embodiment, a spring 14 is further provided in the third limiting cylinder 13, and the spring 14 is fixedly connected to the connecting rod 6. The spring 14 in this application is used to provide a downward pulling force when the free door 5 falls back. During the process of the free door 5 being opened by an external force, the free door 5 moves upward along the arc-shaped track, and the spring 14 is subjected to an upward tensile force. After the external force disappears, the free door 5 falls back downward along the arc-shaped track to the return groove 4 under the action of the downward pulling force of the spring 14 and its own gravity, making the automatic fall-back of the free door 5 smoother.

[0035] See Figure 1 , an embodiment of the second aspect of the present invention provides a free door 5, including the heavy-duty free door 5 hinge device described above. Connecting rods 6 are installed at both the upper and lower ends of the free door 5. The upper connecting rod 6 is connected to the V-shaped hinge 1 and the fixed seat assembly 2, and the lower connecting rod 6 is connected to the bottom base assembly 12.

[0036] As described above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A heavy-duty free door hinge device, characterized in that: The hinge device comprises a V-shaped hinge assembly arranged at the top of the free door (5), the V-shaped hinge assembly comprising a V-shaped hinge (1) and a fixed seat assembly (2), the V-shaped hinge (1) comprising an arc-shaped slideway (3) and a return groove (4), the return groove (4) being connected to the arc-shaped slideway (3), the height of the arc-shaped slideway (3) gradually decreasing from an end away from the return groove (4) towards the return groove (4); the fixed seat assembly (2) comprising a rolling bearing (7), the rolling bearing (7) being used to move along the arc-shaped slideway (3); the free door (5) is connected to the V-shaped hinge assembly via a connecting rod (6), and is used to automatically return under the action of the V-shaped hinge (1) and the rolling bearing (7).

2. The heavy duty free door hinge device according to claim 1, characterized in that: The arc-shaped slideway (3) in the V-shaped hinge (1) comprises a first arc-shaped slideway and a second arc-shaped slideway, wherein the first arc-shaped slideway and the second arc-shaped slideway are arranged on both sides of the return groove (4), and the height of the first arc-shaped slideway and the second arc-shaped slideway gradually decreases along one end connected to the return groove (4), and the first arc-shaped slideway, the return groove (4) and the second arc-shaped slideway form a V-shaped structure.

3. The heavy duty free door hinge device according to claim 1, characterized in that: The V-shaped hinge (1) further comprises a first limiting cylinder (9) arranged at the center position of the V-shaped hinge (1), wherein the first limiting cylinder (9) is used to limit the connection rod (6) passing through the first limiting cylinder (9).

4. The heavy duty free door hinge device according to claim 3, characterized in that: A shock absorbing device (10) is also provided on the first limiting cylinder (9).

5. The heavy duty free door hinge device according to claim 1, characterized in that: The fixing seat assembly (2) further comprises a second limiting cylinder (11), and the connecting rod (6) passes through the second limiting cylinder (11) and is fixedly connected to the second limiting cylinder (11).

6. The heavy duty free door hinge device according to claim 5, characterized in that: A mounting seat is provided on one side of the second limiting cylinder (11), the mounting seat being provided with a downward opening, and the rolling bearing (7) is mounted in the opening via a pin (8).

7. The heavy duty free door hinge device according to claim 1, characterized in that: The hinge device further comprises a base assembly (12) arranged at the bottom of the free door (5), the base assembly (12) comprising a base, a third limiting cylinder (13) being provided on the base, and the connecting rod (6) being inserted into the third limiting cylinder (13).

8. The heavy duty free door hinge device according to claim 7, characterized in that: A spring (14) is also provided in the third limiting cylinder (13), and the spring (14) is fixedly connected to the connecting rod (6).

9. A freegate, characterized in that: A heavy-duty free door hinge device comprising any one of claims 1-8.

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