Free door hinge structure with 90-degree closing function

Abstract

The utility model relates to the technical field of free door hinges, in particular to a free door hinge structure with a 90-degree closing function, which comprises an upper hinge aircraft sheet, a closing groove is arranged at the middle end of the upper hinge aircraft sheet, a center hole is arranged on the closing groove, a hinge stainless steel upper shaft with an adaptive aperture is arranged on the center hole, and a hinge stainless steel lower shaft is arranged on the hinge stainless steel upper shaft. An insertion hole is formed in the bottom end of the hinge stainless steel upper shaft, and a hinge roller shaft matched with the insertion hole in aperture is installed on the insertion hole. According to the hinge structure of the free door, by changing the structure of the upper hinge aircraft sheet, the two-way 90-degree closing function of the free door is added under the conditions that the original appearance and function of the free door are not affected and foreign objects are not used, when the free door is normally opened and the angle is larger than or smaller than 90 degrees, automatic closing can be achieved, manual closing is not needed, and the free door is convenient to use. The automatic door can be conveniently and automatically closed, indoor and outdoor air convection can be greatly reduced, and dust and sweeps are prevented from entering.

Description

Technical Field

[0001] The utility model relates to the technical field of free door hinges, in particular to a free door hinge structure with a 90-degree stopping and closing function. Background Art

[0002] The free door can be opened freely in two directions by pushing by hand or by hitting a trolley or even a forklift. It will automatically close when a person or object passes through, and the door is in a normally closed state. In daily use, when the place of use needs to be cleaned or ventilated, the free door needs to be in a normally open state. The existing hinge structure cannot achieve the free door being normally open. The conventional practice is to open the door and then block the door with a heavy object to achieve the free door being normally open. Although this method achieves the purpose of the free door being normally open, the actual operation is more troublesome, and there will be more obstacles at the door opening, affecting the normal passage of people. Therefore, a free door hinge structure with a 90-degree stop and close function is needed to solve this problem. Utility Model Content

[0003] The purpose of the utility model is to provide a free door hinge structure with a 90-degree stop and close function to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a free door hinge structure with a 90-degree stop and close function, comprising an upper hinge plane plate, a stop and close groove is installed at the middle end of the upper hinge plane plate, a center hole is opened on the stop and close groove, a hinge stainless steel upper shaft with a matching aperture is installed on the center hole, a socket is opened at the bottom end of the hinge stainless steel upper shaft, and a hinge roller shaft with a matching aperture is installed on the socket.

[0005] As a preferred technical solution of the utility model, a pin hole is provided on the hinge roller shaft, and a cotter pin with a matching hole diameter is installed on the pin hole.

[0006] As a preferred technical solution of the utility model, the hinge stainless steel upper shaft passes through the center hole and the hinge roller shaft passes through the insertion hole on the hinge stainless steel upper shaft.

[0007] As a preferred technical solution of the utility model, two arc grooves with a radius of 10MM, a depth of 1.5MM and a length of 20MM are added at the cross intersection of the middle end of the upper hinge aircraft plate, and the two arc grooves are symmetrically distributed.

[0008] As the preferred technical solution of the utility model, two first hinge rollers and second hinge rollers with a diameter of 20MM are respectively installed at the bottom end of the upper hinge aircraft plate, the first hinge rollers and the second hinge rollers fall into two circular arc grooves respectively, and the first hinge rollers and the second hinge rollers are both made of stainless steel.

[0009] As a preferred technical solution of the utility model, openings are provided in the middle of the first hinge roller and the second hinge roller, and the openings provided in the first hinge roller and the second hinge roller are adapted to and penetrate the hinge roller shafts.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] (1) The utility model is a free door hinge structure with a 90-degree stop and close function. The free door hinge structure of the device adds a two-way 90-degree stop and close function to the free door without affecting the original appearance and function of the free door and without the help of external objects by changing the structure of the upper hinge plane sheet. When the free door is normally opened, it can be automatically closed when the angle is greater than or less than 90 degrees, without manual closing, which is convenient for automatic closing of the automatic door, can greatly reduce indoor and outdoor air convection, and prevent dust and debris from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a free door hinge structure with a 90-degree stop and close function according to an embodiment of the utility model;

[0014] Figure 2 It is an exploded separation diagram of a free door hinge structure with a 90-degree stopping and closing function according to an embodiment of the utility model.

[0015] Reference numerals:

[0016] 1. Hinge roller shaft; 2. First hinge roller; 3. Hinge stainless steel upper shaft; 4. Upper hinge aircraft piece; 5. Cotter pin; 6. Second hinge roller; 7. Stop and close groove; 8. Center hole; 9. Arc groove; 10. Socket; 11. Opening hole; 12. Pin hole. DETAILED DESCRIPTION

[0017] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0018] Example 1

[0019] See also Figure 1 to Figure 2Embodiment 1 is described, comprising an upper hinge plane piece 4, a stop-close groove 7 is installed at the middle end of the upper hinge plane piece 4, a center hole 8 is provided on the stop-close groove 7, a hinge stainless steel upper shaft 3 with a matching aperture is installed on the center hole 8, a plug hole 10 is provided at the bottom end of the hinge stainless steel upper shaft 3, a hinge roller shaft 1 with a matching aperture is installed on the plug hole 10, a pin hole 12 is provided on the hinge roller shaft 1, a cotter pin 5 with a matching aperture is installed on the pin hole 12, the hinge stainless steel upper shaft 3 passes through the center hole 8 and passes through the hinge roller shaft 1 and the plug hole 12 on the hinge stainless steel upper shaft 3;

[0020] In this embodiment, the hinge structure is configured so that when the free door is normally opened, it can be automatically closed when the angle is greater than or less than 90°.

[0021] Example 2

[0022] See also Figure 2 Example 2 is described. This embodiment further describes Example 1, including an upper hinged aircraft piece 4. Two arc grooves 9 with a radius of 10MM, a depth of 1.5MM and a length of 20MM are added at the cross intersection of the middle end of the upper hinged aircraft piece 4, and the two arc grooves 9 are symmetrically distributed. Two first hinge rollers 2 and second hinge rollers 6 with a diameter of 20MM are respectively installed at the bottom end of the upper hinged aircraft piece 4. The first hinge rollers 2 and the second hinge rollers 6 fall into the two arc grooves 9 respectively, and the first hinge rollers 2 and the second hinge rollers 6 are both made of stainless steel. Openings 11 are opened in the middle of the first hinge rollers 2 and the second hinge rollers 6. The openings 11 opened in the first hinge rollers 2 and the second hinge rollers 6 are adapted to and penetrate the hinge roller shafts 1;

[0023] In this embodiment, two arc grooves 9 with a radius of 10MM, a depth of 1.5MM and a length of 20MM are added at the cross intersection of the middle end of the upper hinge aircraft piece 4. When the free door is opened to 90°, the two stainless steel first hinge rollers 2 and second hinge rollers 6 with a diameter of 20MM on the upper hinge aircraft piece 4 fall into the two arc grooves 9 respectively, thereby realizing the 90° stop and close function, which can greatly reduce indoor and outdoor air convection and prevent the entry of dust and waste.

[0024] In specific applications, the device adds two arc grooves 9 with a radius of 10MM, a depth of 1.5MM and a length of 20MM at the cross intersection with the middle end of the upper hinged aircraft piece 4. When the free door is normally opened, it can be automatically closed when the angle is greater than or less than 90°. When the free door is opened to 90°, the two stainless steel first hinge rollers 2 and the second hinge rollers 6 with a diameter of 20MM on the upper hinged aircraft piece 4 fall into the two arc grooves 9 respectively, thereby realizing the 90° stop and close function.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A free door hinge structure with 90 degree stop and close function, characterized in that: The invention comprises an upper hinged plane piece (4), a stop-close groove (7) is installed at the middle end of the upper hinged plane piece (4), a center hole (8) is provided on the stop-close groove (7), a hinge stainless steel upper shaft (3) with a matching aperture is installed on the center hole (8), a plug hole (10) is provided at the bottom end of the hinge stainless steel upper shaft (3), and a hinge roller shaft (1) with a matching aperture is installed on the plug hole (10).

2. A free door hinge structure with 90 degree stop and close function according to claim 1, characterized in that: The hinge roller shaft (1) is provided with a pin hole (12), and a split pin (5) with a matching hole diameter is installed on the pin hole (12).

3. The free door hinge structure with 90 degree stop and close function according to claim 1, characterized in that: The hinge stainless steel upper shaft (3) passes through the central hole (8) and passes through the insertion hole (10) on the hinge stainless steel upper shaft (3) through the hinge roller shaft (1).

4. The free door hinge structure with 90 degree stop and close function according to claim 1, characterized in that: Two arc grooves (9) with a radius of 10MM, a depth of 1.5MM and a length of 20MM are added at the cross intersection of the middle end of the upper hinge aircraft plate (4), and the two arc grooves (9) are symmetrically distributed.

5. A free door hinge structure with 90 degree stop and close function according to claim 4, characterized in that: The bottom end of the upper hinge plane plate (4) is respectively provided with two first hinge rollers (2) and second hinge rollers (6) with a diameter of 20 MM, the first hinge rollers (2) and the second hinge rollers (6) respectively fall into two circular arc grooves (9), and the first hinge rollers (2) and the second hinge rollers (6) are both made of stainless steel.

6. A free door hinge structure with 90 degree stop and close function according to claim 5, characterized in that: An opening (11) is provided in the middle of the first hinge roller (2) and the second hinge roller (6); the opening (11) provided in the first hinge roller (2) and the second hinge roller (6) is adapted to and penetrates the hinge roller shaft (1).

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