Door hinge

Abstract

The utility model discloses a door hinge which comprises a shaft, a first hinge plate extending in the radial direction is arranged on one side of the shaft, a second hinge plate extending in the radial direction is arranged at the other end of the shaft, the first hinge plate is fixedly connected with the shaft, connecting ball heads are arranged at the two ends of the shaft respectively, and ball sleeves rotating relatively are arranged on the connecting ball heads. The ball sleeve is provided with a shaft hole for the shaft to penetrate, and the second hinge plate is fixedly connected with the ball sleeve. The outer wall of the ball sleeve is provided with a plurality of first spherical positioning grooves which are arranged around the axis of the shaft at equal-interval included angles in an annular array mode, a first positioning ball head is embedded in one first spherical positioning groove, and a transition elastic piece is connected between the first positioning ball head and the first hinge plate. The door hinge has the characteristics of localization and damping in rotation, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to a hinge, more particularly to a door hinge. Background Art

[0002] Traditional hinges used on doors are mostly simple in structure, without damping function or positioning function, limited in use and poor in overall effect. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a door hinge which has the characteristics of being positionable and having damping when rotating.

[0004] In order to solve the above technical problems, the purpose of the present invention is achieved as follows: The present invention involves a door hinge, including a shaft, a first hinge plate extending radially is provided on one side of the shaft, and a second hinge plate also extending radially is provided on the other end. The first hinge plate is fixedly connected to the shaft, and connecting ball heads are respectively provided at both ends of the shaft. The connecting ball heads are provided with ball sleeves that rotate relatively to each other, and the ball sleeve is provided with an axis hole for the shaft to pass through. The second hinge plate is fixedly connected to the ball sleeve.

[0005] The utility model is further configured as follows: a plurality of first spherical positioning grooves are arranged in a circular array with equal intervals and angles around the axis of the shaft on the outer wall of the ball sleeve, wherein a first positioning ball head is embedded in one of the first spherical positioning grooves, and a transition spring is connected between the first positioning ball head and the first hinge plate.

[0006] The utility model is further configured such that: the transition spring piece extends close to the outer wall of the ball sleeve.

[0007] The utility model is further configured as follows: the transition spring piece is C-shaped.

[0008] The utility model is further configured as follows: a second spherical positioning groove is provided on the outer wall of the ball sleeve and is coaxial with the shaft, a second positioning ball head is embedded in the second spherical positioning groove, and the second positioning ball head is provided on the transition spring piece.

[0009] The present invention is further configured such that: both the first hinge plate and the second hinge plate are provided with mounting holes.

[0010] In summary, the present invention has the following beneficial effects:

[0011] 1. When the door hinge is opened and closed, the first positioning ball head escapes from the first spherical positioning groove, which causes the transition spring to deform, causing the rotating first positioning ball head to continuously press against the ball sleeve, forming a damping function.

[0012] 2. When the transition spring is rotated to a suitable angle, the first positioning ball head will be embedded in a first spherical positioning groove, thereby achieving a positioning effect on the opening and closing angle of the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of a part of the structure of the utility model;

[0015] Figure 3 It is another structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. Based on the examples in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0017] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0018] Example 1

[0019] See also Figures 1 to 3 As shown, the door hinge involved in this embodiment includes a shaft 1, a first hinge plate 2 extending radially is provided on one side of the shaft 1, and a second hinge plate 3 also extending radially is provided on the other end. The first hinge plate 2 is fixedly connected to the shaft 1, and connecting ball heads 4 are respectively provided at both ends of the shaft 1. The connecting ball heads 4 are provided with ball sleeves 5 that rotate relative to each other, and the ball sleeves 5 are provided with an axis hole 6 for the shaft to pass through. The second hinge plate 3 is fixedly connected to the ball sleeve 5.

[0020] Furthermore, the outer wall of the ball sleeve 5 is provided with a plurality of first spherical positioning grooves 7 arranged in a circular array with equal intervals around the axis of the shaft, wherein a first positioning ball head 8 is embedded in one of the first spherical positioning grooves 7, and a transition spring piece 9 is connected between the first positioning ball head 8 and the first hinge plate 2.

[0021] Furthermore, the transition spring piece 9 extends close to the outer wall of the ball sleeve 5 .

[0022] Furthermore, the transition spring piece 9 is C-shaped.

[0023] Furthermore, both the first hinge plate 2 and the second hinge plate 3 are provided with mounting holes 12 .

[0024] In this embodiment, the first hinge plate 2 rotates relative to the second hinge plate 3. During the rotation, the first positioning ball head 8 disengages from a first spherical positioning groove 7. During the disengagement, the first positioning ball head 8 pushes the transition spring piece 9 in the opposite direction until the transition spring piece 9 is deformed. During this deformation process, the opening and closing hinge forms a damping effect. When the first positioning ball head 8 is rotated into another first spherical positioning groove 7 again, a hinge positioning effect is formed; if the rotation continues, the above operation can be repeated.

[0025] The installation hole 12 is provided to serve as a connecting screw.

[0026] Example 2

[0027] See also Figures 1 to 3 As shown, the door hinge involved in this embodiment is further configured on the basis of Example 1, wherein a second spherical positioning groove 10 coaxially arranged with the axis is provided on the outer wall of the ball sleeve 5, and a second positioning ball head 11 is embedded in the second spherical positioning groove 10, and the second positioning ball head 11 is provided on the transition spring piece 9.

[0028] In this embodiment, the second spherical positioning groove 10 cooperates with the second positioning ball head 11 to prevent the transition spring piece 9 from shifting during deformation.

[0029] The door hinge involved in the present invention has a door hinge that, when the door hinge is opened and closed, the first positioning ball head disengages from the first spherical positioning groove, thereby deforming the transition spring piece, causing the rotating first positioning ball head to continuously press against the ball sleeve, thereby forming a damping function; and the first positioning ball head on the transition spring piece that is rotated to a suitable angle will be embedded in a first spherical positioning groove, thereby achieving a positioning effect for the opening and closing angle of the hinge, with complete overall functionality and strong practicality.

[0030] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationship, they are based on the orientation or positional relationship actually shown and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can combine the embodiments and understand the specific meanings of the above terms according to specific circumstances.

[0031] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this utility model should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A door hinge comprising a shaft, a first hinge plate extending radially provided on one end of the shaft, and a second hinge plate also extending radially provided on the other end of the shaft, wherein the first hinge plate is fixedly connected to the shaft, and characterized in that: Both ends of the shaft are provided with connecting ball heads respectively, and the connecting ball heads are provided with ball sleeves which are relatively rotatable, and the ball sleeves are provided with shaft holes for the shaft to pass through, and the second hinge plate is fixedly connected to the ball sleeves.

2. The door hinge according to claim 1, characterized in that: The outer wall of the ball sleeve is provided with a plurality of first spherical positioning grooves arranged in a circular array with equal intervals around the axis of the shaft, wherein a first positioning ball head is embedded in one of the first spherical positioning grooves, and a transition spring is connected between the first positioning ball head and the first hinge plate.

3. The door hinge according to claim 2, characterized in that: The transition spring piece extends close to the outer wall of the ball sleeve.

4. The door hinge according to claim 3, characterized in that: The transition spring is in a C shape.

5. The door hinge according to any one of claims 2 to 4, characterized in that: A second spherical positioning groove coaxial with the shaft is provided on the outer wall of the ball sleeve. A second positioning ball head is embedded in the second spherical positioning groove. The second positioning ball head is provided on the transition spring piece.

6. The door hinge according to claim 1, characterized in that: The first hinge plate and the second hinge plate are both provided with mounting holes.

Images