A double-axis rotating arm hinge structure

Abstract

The present invention discloses a double-axis pivot hinge structure, which is composed of a door frame half hinge, a pivot arm, a door leaf half hinge, an axis 1, an axis 2, a plane bearing 1, a plane bearing 2, a pivot arm limit buckle plate, a guide rivet column, a buckle plate spring and a door leaf decorative sheet. The pivot arm has plane bearings 1 and 2 at both ends of its axis hole 1 and axis hole 2. The door frame half hinge is connected to the axis hole 1 end of the pivot arm through the axis 1, and the two ends of the axis 1 are riveted or welded to the outer ends of the axis holes 3 of the two rolled parts of the door frame half hinge. The door leaf half hinge is connected to the axis hole 2 end of the pivot arm through the axis 2, and the two ends of the axis 2 are riveted or welded to the outer ends of the two rolled parts of the door leaf half hinge. Two pivot arm limit buckle plates are arranged on the hinge leaf plate of the door frame half hinge, and the two limit buckle plates are provided with oblong long holes, which are riveted to the hinge leaf plate of the door frame half hinge through the guide rivet column. The two limit buckle plates use buckle plate springs to make the V-shaped buckle heads on the limit buckle plates automatically buckle into the V-shaped buckle groove 1 or the V-shaped buckle groove 2 on the rotating arm to clamp the rotating arm in position.

Description

Technical Field

[0001] This invention patent relates to a double-axis swing arm hinge structure, belonging to hardware products. Background Art

[0002] A hinge (or a hinge joint) is an important component of a door product. For the existing anti-theft door hinges, generally, a gasket is added between the half hinge on the door frame and the half hinge on the door leaf in the axial direction for fixing, and there is no design of a bushing in the radial direction. When the hinge bears a load, the friction between the half hinge on the door leaf and the gasket plane, and between the core shaft and the shaft hole of the half hinge on the door leaf is severe. After a long time, there will be a squeaking abnormal sound. In addition, in recent years, with the market demand for high-grade anti-theft doors, more and more concealed hinges are adopted. Generally, the concealed hinge has a swing arm hinge with a rotating shaft on the door frame. Since the opening angle of the door leaf is only more than 90 degrees, it affects the effective width of the door frame opening and the entry of large furniture. Therefore, it is becoming increasingly important to develop and design a concealed hinge with a larger opening angle that is easy and flexible to open, has no noise, and can bear heavy loads. Summary of the Invention

[0003] Based on the above product defects and requirements, the technical problem to be solved by this invention patent is to provide a double-axis swing arm hinge structure.

[0004] The following are the technical solutions adopted by this invention patent:

[0005] A double-axis swing arm hinge structure is composed of a door frame half hinge, a swing arm, a door leaf half hinge, a first shaft, a second shaft, a first plain bearing, a second plain bearing, a limit buckle plate, a guiding rivet post, a buckle spring, and an installation foot decorative piece. At both ends of the first shaft hole and the second shaft hole of the swing arm, there are a first plain bearing and a second plain bearing. The door frame half hinge is connected to the end of the first shaft hole of the swing arm through the first shaft, and both ends of the first shaft are riveted or welded and fixed to the outer ends of the shaft holes A of the two coiled circular parts of the door frame half hinge. The door leaf half hinge is connected to the end of the second shaft hole of the swing arm through the second shaft, and both ends of the second shaft are riveted or welded and fixed to the outer ends of the two coiled circular parts of the door leaf half hinge; on the hinge leaf plate of the door frame half hinge, there are two swing arm limit buckle plates. On the two limit buckle plates, there are oblong long holes and they are riveted to the hinge leaf plate of the door frame half hinge through the guiding rivet posts. There is a buckle spring on the two limit buckle plates, so that the V-shaped buckle heads on the limit buckle plates automatically snap into the first V-shaped buckle groove or the second V-shaped buckle groove on the swing arm to lock the swing arm. The installation foot decorative piece is arranged on the installation foot plate of the door leaf half hinge.

[0006] Further: The rotating arm is a 3-shaped rotating arm connecting the first shaft hole and the second shaft hole, with two arc-shaped surfaces A and B. At least two limiting V-shaped snap grooves are provided at both edges of the arc-shaped surface A near the first shaft hole section. When the rotating arm is in place, the V-shaped buckles of the two limiting buckles are snapped into the first V-shaped snap groove or the second V-shaped snap groove to limit and lock the rotating arm. The half hinge of the door leaf is provided with a limiting stop. When the half hinge of the door leaf rotates to the extreme limit around the second shaft, the limiting stop abuts against the straight surface of the rolled edge of the second shaft hole to drive the rotating arm to disengage from the V-shaped buckle of the limiting buckle. The rotating arm rotates around the first shaft, causing the V-shaped buckle of the limiting buckle to rotate from the first V-shaped snap groove to the second V-shaped snap groove, increasing the maximum opening angle position of the half hinge of the door leaf.

[0007] Further: A first plain bearing and a second plain bearing are provided in the first shaft hole and the second shaft hole of the rotating arm, which are plain bearings respectively composed of a first shaft sleeve, a first gasket, a second shaft sleeve, and a second gasket. The first shaft sleeve is fixed at both ends of the first shaft hole of the rotating arm, and the first gasket is placed between the large-diameter end of the first shaft sleeve and the inner end face of the shaft hole A of the two rolled parts of the half hinge of the door frame for abutting installation. The second shaft sleeve is fixed at both ends of the second shaft hole of the rotating arm, and the second gasket is placed between the large-diameter end of the second shaft sleeve and the inner end face of the shaft hole B of the two rolled parts of the half hinge of the door leaf for abutting installation. The design of the first gasket and the second gasket is to avoid direct friction between the second shaft sleeve and the first shaft sleeve and the abutting surfaces of the half hinge of the door leaf and the half hinge of the door frame, protect the large-diameter end face of the shaft sleeve from being easily worn, enhance the strength of the supporting surface, and make the hinge open flexibly and easily.

[0008] Further: Installation foot decorative pieces are provided on the installation feet of the half hinge of the door leaf. On both edges of the arc-shaped surface B near the second shaft hole section of the rotating arm, there is an outward convex clamping point each. At the middle part above the installation foot decorative piece, an elastic curled edge is designed corresponding to the outward convex clamping point on the rotating arm. When the elastic curled edge abuts against the outward convex clamping point on the rotating arm in place, it drives the rotating arm to reset, and the V-shaped buckle of the limiting buckle rotates from the second V-shaped snap groove to the first V-shaped snap groove to lock and position the rotating arm.

[0009] The advantages of this invention patent are: flexible and easy to open, strong load-bearing capacity, beautiful appearance, and the hinge can be opened 180 degrees or even a larger angle. Description of the Drawings

[0010] Figure 1 When the hinge is opened 180 degrees (hinge state diagram);

[0011] Figure 2 When the hinge is opened 180 degrees (three-dimensional state diagram of the back of the hinge);

[0012] Figure 3 When the hinge is opened 180 degrees (three-dimensional state diagram of the front of the hinge);

[0013] Figure 4 Three-dimensional diagram of the limiting buckle;

[0014] Figure 5 When it is the initial position of the hinge (when the door leaf is closed, the state diagram of the hinge);

[0015] Figure 6 It is the state diagram of the hinge when the half-hinge of the door leaf rotates around the axis to the extreme limit position;

[0016] Figure 7 It is the exploded three-dimensional structure illustration of the hinge;

[0017] Figure 8 It is the three-dimensional illustration of the swing arm;

[0018] Figure 9 It is the three-dimensional illustration of the mounting foot decorative piece;

[0019] Figure 10 It is the three-dimensional illustration of the half-hinge of the door frame;

[0020] Figure 11 It is the three-dimensional illustration of the half-hinge of the door leaf. Detailed implementation manners

[0021] Refer to the attached Figures 1 - 11 , and further illustrate the present invention patent in combination with the embodiments. This double-axis swing arm hinge structure is composed of a half-hinge 1 of the door frame, a swing arm 2, a half-hinge 3 of the door leaf, a first shaft 4, a second shaft 5, a first plain bearing 6, a second plain bearing 7, a limit buckle plate 8, a guiding rivet post 9, a buckle plate spring 10, and a mounting foot decorative piece 11. For the swing arm 2, first plain bearings 6 and second plain bearings 7 are provided at both ends of its first shaft hole 2-1 and second shaft hole 2-2. The half-hinge 1 of the door frame is connected to the end of the first shaft hole 2-1 of the swing arm 2 through the first shaft 4, and both ends of the first shaft 4 are riveted or welded and fixed to the outer ends of the shaft holes A1-2 of the two coiled circular parts of the half-hinge 1 of the door frame. The half-hinge 3 of the door leaf is connected to the end of the second shaft hole 2-2 of the swing arm 2 through the second shaft 5, and both ends of the second shaft 5 are riveted or welded and fixed to the outer ends of the two coiled circular parts of the half-hinge 3 of the door leaf; two swing arm limit buckle plates 8 are provided on the hinge leaf plate of the half-hinge 1 of the door frame, and oval long holes 8-1 are provided on the two limit buckle plates 8 and are riveted to the hinge leaf plate 1-1 of the half-hinge 1 of the door frame through the guiding rivet post 9. Two buckle plate springs 10 are provided on the two limit buckle plates 8, so that the V-shaped buckle heads 8-2 on the limit buckle plates 8 automatically buckle into the first V-shaped buckle groove 2-5 or the second V-shaped buckle groove 2-6 on the swing arm 2 to clamp the swing arm 2, and the mounting foot decorative piece 11 is arranged on the mounting foot plate of the half-hinge 3 of the door leaf.

[0022] Preferably, the rotating arm 2 is a three-shaped rotating arm connecting the first axial hole 2-1 and the second axial hole 2-2 into two sections of arc surface A2-3 and arc surface B2-4. At least two limiting V-shaped buckle grooves are provided on the two edges of the arc surface A2-3 near the first shaft hole 2-1. When the rotating arm is in place, the V-shaped buckle heads 8-2 of the two limiting buckle plates 8 are buckled in the first V-shaped buckle groove 2-5 or the second V-shaped buckle groove 2-6, so that the rotating arm is limited and clamped; the door leaf half hinge 3 is provided with a limiting stopper 3-2. The door leaf half hinge 3 rotates around the second shaft 5 to the limit position. The limiting stopper 3-2 presses against the rounded edge of the second shaft hole 2-2 and drives the rotating arm 2 to separate from the V-shaped buckle head 8-2 of the limiting buckle plate 8. The rotating arm 2 rotates around the first shaft 4 so that the V-shaped buckle head 8-2 of the limiting buckle plate 8 rotates from the first V-shaped buckle groove 2-5 to the second V-shaped buckle groove 2-6, increasing the door leaf half hinge (3) to open to the maximum angle position.

[0023] Preferably: a first plane bearing 6 and a second plane bearing 7 are provided in the first shaft hole 2-1 and the second shaft hole 2-2 of the rotating arm 2, which are plane bearings respectively composed of a first sleeve 6-1, a first gasket 6-2, a second sleeve 7-1, and a second gasket 7-2. The first sleeve 6-1 is fixed to both ends of the first shaft hole 2-1 of the rotating arm 2, and the first gasket 6-2 is installed by abutting the large diameter end of the first sleeve 6-1 with the inner end faces of the two rounded shaft holes A1-2 of the half hinge 1 of the door frame. The second sleeve 7-1 is fixed to both ends of the second shaft hole 2-2 of the rotating arm 2, and the second gasket 7-2 is installed by abutting the large diameter end of the second sleeve 7-1 with the inner end faces of the two rounded shaft holes B3-1 of the half hinge 3 of the door leaf. The first gasket 6-2 and the second gasket 7-2 are designed to avoid direct friction between the second sleeve 7-1 and the first sleeve 6-1 and the contact surface between the door leaf half hinge 3 and the door frame half hinge 1, and to protect the large diameter end surface of the sleeve from wear. It enhances the strength of the bearing surface and makes the hinge open flexibly and easily.

[0024] Preferably: a mounting foot decorative piece 11 is provided on the mounting foot plate of the door leaf half hinge 3, and the rotating arm 2 is provided with an outer convex clamping point 2-7 on each of the two edges of the arc surface B2-4 close to the second shaft hole 2-2, and an elastic curling edge 11-1 is designed at the middle of the upper side of the mounting foot decorative piece 11 corresponding to the outer convex clamping point 2-7 on the rotating arm 2, and the elastic curling edge 11-1 and the outer convex clamping point 2-7 on the rotating arm 2 are in place to abut against each other to drive the rotating arm 2 to reset, and the V-shaped buckle head 8-2 of the limit buckle plate 8 rotates from the second V-shaped buckle groove 2-6 to the first V-shaped buckle groove 2-5 to clamp the positioning rotating arm 2.

[0025] Finally, it should be noted that the above examples are only preferred embodiments of the present invention. Obviously, it is not limited to the above examples, and there can be many variations. All variations of structures, principles, and shapes that can be directly derived or associated with the contents disclosed in the present invention by a person skilled in the art should be considered to be within the scope of protection of the present invention.

Claims

1. A double-axis pivot hinge structure, which consists of a door frame half hinge (1), a pivot arm (2), a door leaf half hinge (3), a first axis (4), a second axis (5), a first plane bearing (6), a second plane bearing (7), a limit gusset plate (8), a guide rivet column (9), a gusset plate spring (10) and a mounting foot decorative sheet (11), and is characterized in that: The first axial hole (2-1) and the second axial hole (2-2) of the rotating arm (2) are provided with a first plane bearing (6) and a second plane bearing (7) at both ends. The door frame half hinge (1) is connected to the first axial hole (2-1) end of the rotating arm (2) via a first shaft (4). The two ends of the first shaft (4) are riveted or welded to the outer ends of the two curved axial holes A (1-2) of the door frame half hinge (1). The door leaf half hinge (3) is connected to the second axial hole (2-2) end of the rotating arm (2) via a second shaft (5). The two ends of the second shaft (5) are riveted or welded to the outer ends of the two curved axial holes A (1-2) of the door leaf half hinge (3). The hinge plate of the door frame half hinge (1) is connected and fixed; two rotating arm limiting buckle plates (8) are arranged on the hinge plate of the door frame half hinge (1); the two limiting buckle plates (8) are provided with oblong long holes (8-1) and are riveted to the hinge plate (1-1) of the door frame half hinge (1) through guide rivet columns (9); the two limiting buckle plates (8) are provided with buckle plate springs (10) so that the V-shaped buckle heads (8-2) on the limiting buckle plates (8) are automatically buckled into the first V-shaped buckle groove (2-5) or the second V-shaped buckle groove (2-6) on the rotating arm (2) when they are in place to clamp the rotating arm (2); the mounting foot decorative piece (11) is arranged on the mounting foot plate of the door leaf half hinge (3).

2. A double-axis rotating arm hinge structure according to claim 1, characterized in that: The rotating arm (2) is a three-shaped rotating arm connecting the first shaft hole (2-1) and the second shaft hole (2-2) to form two arcuate surfaces A (2-3) and an arcuate surface B (2-4). At least two limiting V-shaped buckle grooves are respectively provided on the two edges of the arcuate surface A (2-3) close to the first shaft hole (2-1). When the rotating arm is in position, the V-shaped buckle heads (8-2) of the two limiting buckle plates (8) are buckled in the first V-shaped buckle groove (2-5) or the second V-shaped buckle groove (2-6), so that the rotating arm is limited and clamped; the door leaf half hinge (3 ) is provided with a limit stopper (3-2), the door leaf half hinge (3) rotates around the second axis (5) to the limit position, the limit stopper (3-2) abuts against the rounded edge of the second axis hole (2-2) to drive the rotating arm (2) to separate from the V-shaped buckle (8-2) of the limit buckle plate (8), the rotating arm (2) rotates around the first axis (4) to make the V-shaped buckle (8-2) of the limit buckle plate (8) rotate from the first V-shaped buckle groove (2-5) to the second V-shaped buckle groove (2-6), thereby increasing the door leaf half hinge (3) to open to the maximum angle position.

3. A double-axis rotating arm hinge structure according to claim 1 or 2, characterized in that: The first shaft hole (2-1) and the second shaft hole (2-2) of the rotating arm (2) are provided with a first plane bearing (6) and a second plane bearing (7), which are respectively composed of a first shaft sleeve (6-1), a first gasket (6-2), a second shaft sleeve (7-1), and a second gasket (7-2); the first shaft sleeve (6-1) is fixed to the two ends of the first shaft hole (2-1) of the rotating arm (2); the first gasket (6-2) is padded on the large diameter end of the first shaft sleeve (6-1) and is installed in contact with the inner end surfaces of the two rounded shaft holes A (1-2) of the door frame half hinge (1); the second shaft sleeve (7-1) is fixed to the two ends of the second shaft hole (2-2) of the rotating arm (2); the second gasket (7-2) is padded on the large diameter end of the second shaft sleeve (7-1) and is installed in contact with the inner end surfaces of the two rounded shaft holes B (3-1) of the door leaf half hinge (3).

4. A double-axis rotating arm hinge structure according to claim 1 or 2, characterized in that: The mounting foot plate of the door leaf half hinge (3) is provided with a mounting foot decorative piece (11); the rotating arm (2) is provided with an outer convex clamping point (2-7) on each of the two edges of the arc surface B (2-4) close to the second shaft hole (2-2); an elastic curling edge (11-1) is designed at a position corresponding to the outer convex clamping point (2-7) on the rotating arm (2) in the middle of the upper side of the mounting foot decorative piece (11); the elastic curling edge (11-1) and the outer convex clamping point (2-7) on the rotating arm (2) are in place and abut against each other to drive the rotating arm (2) to reset; the V-shaped buckle head (8-2) of the limiting buckle plate (8) rotates from the second V-shaped clamping groove (2-6) to the first V-shaped clamping groove (2-5) to clamp the positioning rotating arm (2).

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