A double-axis 180-degree concealed hinge

Abstract

A double-axis 180-degree concealed hinge comprises a door frame, an outer hinge and a door surface, wherein a receiving cavity is arranged in the door frame, an opening is arranged on one side of the door frame, a door frame fixing seat, an inner hinge, a guide pin, a spring and a hinge locking guide block are arranged in the receiving cavity, a pin shaft is arranged on the door frame fixing seat, the inner hinge is rotatably arranged on the pin shaft, a first hinge is arranged on the inner hinge, one end of the outer hinge is fixed on the door surface, and the other end of the outer hinge is fixed to the first hinge, the hinge locking guide block is in the shape of a door, and is divided into a horizontal plate and vertical plates arranged at both ends of the horizontal plate, guide holes are arranged at the lower ends of the two vertical plates, the structure is compact, the operation is convenient, no manual adjustment is required, a double-hinge form is adopted, the door surface is convenient to disassemble, and free control of multiple angles is realized.

Description

Technical Field

[0001] The invention relates to the field of life, in particular to a double-axis 180-degree concealed hinge. Background Art

[0002] Hinge, also known as hinge, is a mechanical device used to connect two solids and allow them to rotate. Hinges occupy an important position in furniture hardware accessories. Hinge usually includes a second hinge, a first hinge and a pin connecting the second hinge and the first hinge. Usually, the first hinge is used to fix on a column, a frame or a wall, and the second hinge is fixed to the door, so that the door rotates around the pin and has two states of open or closed. Now many doors use concealed hinges, that is, the hinges on the hinges are hidden, usually embedded in the door frame and the door. This kind of concealed hinge is beautiful and convenient, but the opening angle of traditional concealed hinges is only 90 degrees, which cannot be adapted to some occasions. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides a double-axis 180-degree concealed hinge which has a reasonable structure, is easy to use, and can be opened at a large angle.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-axis 180-degree concealed hinge, comprising a door frame, an outer hinge and a door surface, a receiving cavity is arranged in the door frame, an opening is arranged on one side of the door frame, a door frame fixing seat, an inner hinge, a guide pin, a spring and a hinge locking guide block are arranged in the receiving cavity, a pin shaft is arranged on the door frame fixing seat, the inner hinge is rotatably arranged on the pin shaft, a first hinge is arranged on the inner hinge, one end of the outer hinge is fixed on the door surface, and the other end of the outer hinge is fixed to the first hinge, the hinge locking guide block is in the shape of a door, and is divided into a horizontal plate and vertical plates arranged at both ends of the horizontal plate, and guide holes are arranged at the lower ends of the two vertical plates;

[0007] One end of the guide pin is fixed on the first hinge, and the other end passes through two guide holes. The spring is sleeved on the guide pin, one end of the spring presses against the first hinge, and the other end presses against the vertical plate. A locking pin is provided on the vertical plate close to the outer hinge, and a locking hole is provided on the outer hinge. When the locking pin extends into the locking hole, the outer hinge is fixed, and the vertical plate close to the first hinge is longer than the other vertical plate. When the inner hinge rotates outward to the opening, the vertical plate close to the first hinge presses against the side wall of the lower end of the opening.

[0008] In order to facilitate the recovery, the present invention has an improvement in that the spring is a tower spring, and the large end of the spring faces the first hinge.

[0009] In order to achieve a firm fit between the two hinges, the present invention uses a new improvement in that the first hinge includes an inclined end and a right-angle end, the other end of the outer hinge is a right-angle end, and threaded holes are provided on the right-angle ends of the first hinge and the outer hinge, and fixing screws pass through the threaded holes to fix the two right-angle ends.

[0010] The present invention is improved in that a clearance groove is provided on the transverse plate, and the top end of the fixing screw passes through the clearance groove.

[0011] The present invention is improved in that a positioning hole is provided on the right-angle end of the outer hinge, and one end of the guide pin passes through the fixing hole and is fixed on the positioning hole.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the present invention provides a dual-axis 180-degree concealed hinge, which has the following beneficial effects:

[0014] The new structure of the double-axis 180-degree concealed hinge is compact, easy to operate and does not require manual adjustment. After assembly, when the door face and the door frame are opened, the vertical plate will be automatically limited to about 103°, and when it is 120°, the outer hinge starts to move. Through the sequential coordination of the inner hinge and the outer hinge, the entire door face can be opened at a large angle, and can be opened 180 degrees. In addition, the double-hinged form makes it easy to disassemble the door face and realizes free control of multiple angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a double-axis 180-degree concealed hinge of the present invention;

[0016] Figure 2 The state of the double-axis 180-degree concealed hinge of the present invention Figure 1 ;

[0017] Figure 3 The state of the double-axis 180-degree concealed hinge of the present invention Figure 2 ;

[0018] Figure 4 The state of the double-axis 180-degree concealed hinge of the present invention Figure 3 .

[0019] In the figure: 1. door frame; 2. external hinge; 3. door surface; 4. accommodating cavity; 5. opening; 6. door frame fixing seat; 7. internal hinge; 8. guide pin; 9. spring; 10. pin shaft; 11. hinge locking guide block; 12. first hinge; 13. horizontal plate; 14. vertical plate; 15. locking pin; 16. inclined end; 17. fixing screw; 18. clearance groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-4 A double-axis 180-degree concealed hinge of the present invention comprises a door frame 1, an outer hinge 2 and a door surface 3, wherein a receiving cavity 4 is arranged in the door frame 1, an opening 5 is arranged on one side of the door frame 1, a door frame fixing seat 6, an inner hinge 7, a guide pin 8, a spring 9 and a hinge locking guide block 11 are arranged in the receiving cavity 4, a pin shaft 10 is arranged on the door frame fixing seat 6, the inner hinge 7 is rotatably arranged on the pin shaft 10, a first hinge 12 is arranged on the inner hinge 7, one end of the outer hinge 2 is fixed on the door surface 3, and the other end of the outer hinge 2 is fixed to the first hinge 12, the hinge locking guide block 11 is in the shape of a door, and is divided into a horizontal plate 13 and vertical plates 14 arranged at both ends of the horizontal plate 13, and guide holes are arranged at the lower ends of the two vertical plates 14;

[0022] One end of the guide pin 8 is fixed on the first hinge 12, and the other end passes through two guide holes. The spring 9 is sleeved on the guide pin 8, one end of the spring 9 abuts against the first hinge 12, and the other end abuts against the vertical plate 14. A locking pin 15 is provided on the vertical plate 14 close to the outer hinge 2, and a locking hole is provided on the outer hinge 2. When the locking pin 15 extends into the locking hole, the outer hinge 2 is fixed, and the vertical plate 14 close to the first hinge 12 is longer than the other vertical plate 14. When the inner hinge 7 rotates outward to the opening 5, the vertical plate 14 close to the first hinge 12 abuts against the lower end side wall of the opening 5.

[0023] The double-axis 180-degree concealed hinge of the new structure first connects the various components together, and the door frame fixing seat 6 is fixed on the door frame 1. The fixing method can be any fixed connection, and this embodiment does not make specific restrictions. Under normal circumstances, due to the restoring force of the spring 9, the locking pin 15 extends into the locking hole, that is, the outer hinge 2 is fixed and cannot rotate. At this time, if the door is opened, the other end of the outer hinge 2 directly drives the first hinge 12 to rotate, and the first hinge 12 rotates around the pin shaft 10. Generally, when it rotates to about 103°, refer to the attached Figure 2 , the longer vertical plate 14 is against the opening 5, and when the rotation continues, the hinge locking guide block 11 starts to move, overcomes the restoring force of the spring 9 and moves toward the first hinge 12, and finally the locking pin 15 is disengaged from the locking hole of the outer hinge 2, which is generally about 120°. Figure 3 , the outer hinge 2 can rotate normally, and then if you open the door, you can open the door to a larger angle through the outer hinge 2. Figure 4 .

[0024] Through the cooperation of the two hinges, the rotation angle of the door face 3 and the door frame 1 can reach 180°. At the same time, the double hinge form is adopted, which makes it very convenient to disassemble the door. And you can choose whether to overcome the restoring force of the spring 9 to release the rotation of the outer hinge 2 according to your needs to achieve free control.

[0025] In this embodiment, the spring 9 is a tower spring, and the large end of the spring 9 faces the first hinge 12, so that the return of the spring 9 is more accurate.

[0026] In this embodiment, the first hinge 12 includes an inclined end 16 and a right-angle end, and the other end of the external hinge 2 is a right-angle end. Threaded holes are provided on the right-angle ends of the first hinge 12 and the external hinge 2. Fixing screws 17 pass through the threaded holes to fix the two right-angle ends, and the inclined end 16 increases the rotation angle.

[0027] In this embodiment, a clearance groove 18 is opened on the horizontal plate, and the top end of the fixing screw 17 passes through the clearance groove 18, which prevents the fixing screw 17 from interfering with the hinge locking guide block 11 on the one hand, and also limits some degrees of freedom.

[0028] In this embodiment, a positioning hole is provided on the right-angle end of the outer hinge, and one end of the guide pin passes through the fixing hole and is fixed on the positioning hole. The matching relationship between the fixing hole and the guide pin further strengthens the matching between the inner hinge and the outer hinge.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-axis 180-degree concealed hinge, It is characterized in that The invention comprises a door frame (1), an outer hinge (2) and a door surface (3), wherein a receiving cavity (4) is arranged in the door frame (1), an opening (5) is arranged on one side of the door frame (1), a door frame fixing seat (6), an inner hinge (7), a guide pin (8), a spring (9) and a hinge locking guide block (11) are arranged in the receiving cavity (4), a pin shaft (10) is arranged on the door frame fixing seat (6), the inner hinge (7) is rotatably arranged on the pin shaft (10), a first hinge (12) is arranged on the inner hinge (7), one end of the outer hinge (2) is fixed on the door surface (3), and the other end of the outer hinge (2) is fixed to the first hinge (12), and the hinge locking guide block (11) is in the shape of a door and is divided into a horizontal plate (13) and vertical plates (14) arranged at both ends of the horizontal plate (13), and guide holes are arranged at the lower ends of the two vertical plates (14); One end of the guide pin (8) is fixed on the first hinge (12), and the other end passes through the two guide holes. The spring (9) is sleeved on the guide pin (8), one end of the spring (9) abuts against the first hinge (12), and the other end abuts against the vertical plate (14). A locking pin (15) is provided on the vertical plate (14) close to the outer hinge (2), and a locking hole is provided on the outer hinge (2). When the locking pin (15) extends into the locking hole, the outer hinge (2) is fixed. The vertical plate (14) close to the first hinge (12) is longer than the other vertical plate (14). When the inner hinge (7) rotates outward to the opening (5), the vertical plate (14) close to the first hinge (12) abuts against the lower end side wall of the opening (5).

2. A double-axis 180-degree concealed hinge according to claim 1, It is characterized in that The spring (9) is a tower spring, and the large end of the spring (9) faces the first hinge (12).

3. A double-axis 180-degree concealed hinge according to claim 1, It is characterized in that The first hinge (12) comprises an inclined end (16) and a right-angle end, and the other end of the external hinge (2) is a right-angle end. The first hinge (12) and the right-angle end of the external hinge (2) are both provided with threaded holes, and fixing screws (17) pass through the threaded holes to fix the two right-angle ends.

4. A double-axis 180-degree concealed hinge according to claim 3, It is characterized in that The transverse plate is provided with a clearance groove (18), and the top end of the fixing screw (17) passes through the clearance groove (18).

5. A double-axis 180-degree concealed hinge according to claim 4, It is characterized in that A positioning hole is provided on the right-angle end of the outer hinge (2), and one end of the guide pin (8) passes through the fixing hole and is fixed on the positioning hole.

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