Automatic return door hinge

Abstract

The utility model discloses an automatic return door hinge, which relates to the technical field of cabinet door hinges and comprises a hinge body, a hinge shaft and a reset mechanism are mounted in the hinge body, a mounting cavity is arranged in the hinge body, the hinge shaft is rotatably mounted at the top end of the mounting cavity, a connecting rod is mounted at the top end of the hinge shaft in a matched manner, and the connecting rod is connected with the reset mechanism. The top end of the connecting rod is fixedly connected with a first fixing piece. According to the design scheme, through the design that the optical axis is movably installed at the center of the connecting rod, when the cabinet door is in a closed state, the first limiting plate and the second limiting plate are arranged at a certain angle, and the reset sliding block rotates to drive the second limiting plate to rotate until the second limiting plate makes contact with the first limiting plate; the opening range of the cabinet door is limited through the first limiting plate, the cabinet door is prevented from colliding with an obstacle, the opening range of the cabinet door can be flexibly adjusted by inserting the positioning boss into the positioning holes in different positions, and the use convenience of a user is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cabinet door hinge, especially an automatic return door hinge. BACKGROUND

[0002] With the development of technology, the refrigeration products have appeared more and more in major application sites, and provide more convenient service for people's life, such as refrigerator, refrigerator, quick freezing cabinet, disinfection cabinet and the like. Such products generally need to have refrigeration function, in order to avoid the user after use not to close the cabinet door, the cabinet door of such products is usually connected with the cabinet body by using the automatic return door hinge, and the automatic return door hinge has the characteristics of being convenient to reset after rotation, so that the cabinet door is automatically closed.

[0003] However, the existing automatic return door hinge does not have the limiting function, if there are some obstacles beside the cabinet door, only the opening amplitude of the cabinet door can be controlled by the user to avoid the collision between the cabinet door and the obstacle, however, the attention of the user is limited, and the cabinet door is often knocked due to negligence, which causes inconvenience to the normal use of the user. INVENTION CONTENTS

[0004] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides an automatic return door hinge.

[0005] The utility model solves the technical problems and adopts the technical scheme that an automatic return door hinge, including hinge body, the inside of hinge body is installed with hinge shaft and reset mechanism, the inside of hinge body is equipped with installation cavity, hinge shaft rotation is installed at the top of installation cavity, the top of hinge shaft is equipped with the connecting rod that cooperates and installs, the top of connecting rod is fixedly connected with first fixed sheet, the center of connecting rod is movably installed with optical axis, the top of optical axis is fixedly installed with adjusting plate, the bottom of one end of adjusting plate away from optical axis is fixedly installed with positioning boss, a plurality of groups of positioning holes are opened in first fixed sheet, a plurality of groups of positioning holes are evenly arrayed with optical axis as center, the bottom of optical axis is fixedly installed with first limiting plate, reset mechanism includes reset slider, reset slider is movably installed in installation cavity, second limiting plate is fixedly installed on reset slider.

[0006] Further, the reset mechanism further comprises a head structure, the head structure is fixedly installed at the bottom of the installation cavity, a plurality of groups of guide blocks are arranged on the side wall of the reset slider, a plurality of guide grooves matched with the guide blocks are arranged on the side wall of the installation cavity, and a spring is installed between the head structure and the reset slider.

[0007] Further, the reset slider and the hinge shaft adjacent one end are provided with grooves, the groove of the reset slider is provided with a protruding part around the groove, the groove of the hinge shaft is provided with a spiral groove matched with the protruding part, and the second limiting plate is installed in the groove of the reset slider.

[0008] Further, the top end of the hinge shaft is provided with a mounting hole in the center, the mounting hole is a hexagonal structure, the bottom end of the connecting rod is provided with a connecting part matched with the mounting hole, and a through hole is formed in the center of the bottom of the mounting hole.

[0009] Further, the top end of the optical axis is provided with a hexagonal prism, the hexagonal prism is tightly inserted with the adjusting plate, and the first limiting plate is located on the bottom end side wall of the optical axis.

[0010] Further, the top end of the hinge body is fixedly installed with a second fixed sheet.

[0011] The utility model discloses the beneficial effect is, the utility model discloses the design scheme through the center place movable installation of optical axis of connecting rod design, under the cabinet door closed state, first limiting plate and second limiting plate between angle setting, reset slider rotates and will drive second limiting plate rotation, until second limiting plate and first limiting plate contact, through first limiting plate limit the opening amplitude of cabinet door, avoid the cabinet door and the obstacle and knock into each other, and through the positioning boss is inserted into the positioning hole in different positions, can the opening amplitude of cabinet door be adjusted flexibly, effectively improved the convenience of user when using. ACCURACY OF DRAWINGS

[0012] The utility model is further explained in connection with the drawings and examples.

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is the explosion head of the utility model;

[0015] Figure 3 It is the front view of the utility model;

[0016] Figure 4 It is the plan view of the utility model;

[0017] Figure 5 It is Figure 3 The sectional structure schematic diagram of direction A-A;

[0018] Figure 6 It is Figure 5 The sectional structure schematic diagram of direction B-B;

[0019] Figure 7 It is the structure schematic diagram of hinge shaft of the utility model;

[0020] Figure 8 It is the installation schematic view of the reset sliding block and the optical axis of the utility model;

[0021] Figure 9 It is the structure schematic view of the optical axis of the utility model.

[0022] In the figure: 1. hinge body, 2. hinge shaft, 3. installation cavity, 4. connecting rod, 5. first fixed sheet, 6. optical axis, 7. adjusting plate, 8. positioning boss, 9. positioning hole, 10. first limiting plate, 11. reset sliding block, 12. second limiting plate, 13. end structure, 14. guide block, 15. guide sliding slot, 16. spring, 17. groove, 18. protruding part, 19. helical groove, 20. mounting hole, 21. connecting part, 22. through hole, 23. hexagonal prism, 24. second fixed sheet. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical scheme of the utility model, the utility model is further described below in combination with the drawings, obviously, the drawings described below are only one embodiment of the utility model, and for the ordinary skilled person in the art, other embodiments can be obtained according to the drawings and the embodiment without paying creative labor, and all belong to the protection scope of the utility model.

[0024] According to Figures 1-9 As shown in the figure, an automatic return door hinge includes a hinge body 1, a hinge shaft 2 and a reset mechanism are installed inside the hinge body 1, the hinge body 1 is provided with an installation cavity 3 in the inside, the hinge shaft 2 is rotatably installed at the top end of the installation cavity 3, the connecting rod 4 is fitted and installed at the top end of the hinge shaft 2, the first fixed sheet 5 is welded at the top end of the connecting rod 4, the optical axis 6 is movably installed at the center of the connecting rod 4, the adjusting plate 7 is fixedly installed at the top end of the optical axis 6, the positioning boss 8 is fixedly installed at the bottom of the end of the adjusting plate 7 away from the optical axis 6, a plurality of groups of positioning holes 9 are formed on the first fixed sheet 5, a plurality of groups of the positioning holes 9 are evenly arrayed with the optical axis 6 as the center, the first limiting plate 10 is fixedly installed at the bottom end of the optical axis 6, the reset mechanism includes the reset sliding block 11, the reset sliding block 11 is movably installed in the installation cavity 3, the second limiting plate 12 is fixedly installed on the reset sliding block 11.

[0025] In the embodiment, the reset mechanism further comprises a head structure 13 fixedly installed at the bottom end of the installation cavity 3, a plurality of sets of guide blocks 14 are arranged on the side wall of the reset slider 11, a guide sliding groove 15 matched with the guide blocks 14 is arranged on the side wall of the installation cavity 3, the reset slider 11 is slidingly installed in the installation cavity 3 under the cooperation of the guide blocks 14 and the guide sliding groove 15, a spring 16 is cooperatively installed between the head structure 13 and the reset slider 11, recesses 17 are arranged at the ends adjacent to the hinge shaft 2 of the reset slider 11 and the hinge shaft 2, a protruding portion 18 is arranged outside the recess 17 of the reset slider 11, a helical groove 19 matched with the protruding portion 18 is arranged outside the recess 17 of the hinge shaft 2, when in the cabinet door closed state, the protruding portion 18 is clamped in the helical groove 19, the second limiting plate 12 is installed inside the recess 17 of the reset slider 11, when the cabinet door is opened, the hinge body 1 drives the reset slider 11 to rotate, the hinge shaft 2 is in a stationary state under the action of the first fixed sheet 5, at this time, the protruding portion 18 gradually separates from the helical groove 19, the reset slider 11 also descends to press the spring 16, the reset slider 11 also drives the second limiting plate 12 to rotate, until the second limiting plate 12 contacts the first limiting plate 10, thereby limiting the opening amplitude of the cabinet door through the first limiting plate 10, when the cabinet door is closed, when the protruding portion 18 slides into the helical groove 19, the reset slider 11 slides upward under the action of the spring 16, so that the protruding portion 18 is completely clamped in the helical groove 19, to realize the automatic closing of the cabinet door.

[0026] In the embodiment, a mounting hole 20 is arranged at the center of the top end of the hinge shaft 2, the mounting hole 20 is a hexagonal structure, a connecting portion 21 matched with the mounting hole 20 is arranged at the bottom end of the connecting rod 4, a through hole 22 is arranged at the center of the bottom of the mounting hole 20, the connecting portion 21 at the bottom end of the connecting rod 4 is inserted into the mounting hole 20, the hinge shaft 2 and the first fixed sheet 5 are limited from relative rotation by the connecting rod 4, the optical axis 6 extends downward into the recess 17 through the through hole 22 at the bottom of the mounting hole 20.

[0027] In the embodiment, a hexagonal prism 23 is arranged at the top end of the optical axis 6, the hexagonal prism 23 is tightly inserted with the adjusting plate 7, when the adjusting plate 7 is rotated, the optical axis 6 and the adjusting plate 7 are synchronously rotated under the action of the hexagonal prism 23, the first limiting plate 10 is arranged at the side wall of the bottom end of the optical axis 6, in the cabinet door closed state, the first limiting plate 10 and the second limiting plate 12 are arranged at a certain angle, by inserting the positioning boss 8 at the end of the adjusting plate 7 into the positioning hole 9 at different positions, the angle between the first limiting plate 10 and the second limiting plate 12 is adjusted within the range of 85 degrees to 135 degrees.

[0028] In the embodiment, the top end of the hinge body 1 is fixedly provided with a second fixed plate 24, the second fixed plate 24 is fixedly provided on the cabinet door through a screw, thereby fixing the hinge body 1 on the cabinet door, and the first fixed plate 5 is fixedly provided on the cabinet body through a screw.

[0029] When the cabinet door is closed, the first limiting plate 10 and the second limiting plate 12 are arranged at a certain angle, the reset sliding block 11 rotates synchronously with the hinge body 1 during the opening of the cabinet door, the included angle between the second limiting plate 12 and the first limiting plate gradually decreases with the gradual opening of the cabinet door, until the second limiting plate 12 contacts the first limiting plate 10, the opening range of the cabinet door is limited through the first limiting plate 10, the cabinet door is prevented from colliding with an obstacle, the positioning boss 8 is separated from the positioning hole 9 by lifting the adjusting plate 7 upwards, the positioning boss 8 is inserted into the positioning hole 9 at different positions, the angle between the first limiting plate 10 and the second limiting plate can be adjusted, the opening range of the cabinet door can be flexibly adjusted, and the convenience of the user during use is effectively improved.

[0030] The above embodiment is only an exemplary embodiment of the utility model, and is not used for limiting the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the essence and protection scope of the utility model, and the modification or equivalent replacement should also be regarded as falling within the protection scope of the utility model.

Claims

1. An automatic return hinge for a door, comprising a hinge body (1), characterized in that: The inside of the hinge body (1) is internally provided with a hinge shaft (2) and a reset mechanism, the inside of the hinge body (1) is internally provided with a mounting cavity (3), the hinge shaft (2) is rotatably mounted at the top end of the mounting cavity (3), a connecting rod (4) is fitted and mounted at the top end of the hinge shaft (2), a first fixed sheet (5) is fixedly connected to the top end of the connecting rod (4), an optical shaft (6) is movably mounted at the center of the connecting rod (4), an adjusting plate (7) is fixedly mounted at the top end of the optical shaft (6), a positioning boss (8) is fixedly mounted at the bottom of the end of the adjusting plate (7) away from the optical shaft (6), a plurality of groups of positioning holes (9) are formed in the first fixed sheet (5), and the plurality of groups of positioning holes (9) are uniformly arranged in an array around the optical shaft (6), and a first limiting plate (10) is fixedly mounted at the bottom end of the optical shaft (6).

2. The automatic return hinge according to claim 1, wherein The reset mechanism further comprises a head structure (13), the head structure (13) is fixedly mounted at the bottom end of the mounting cavity (3), a plurality of groups of guide blocks (14) are arranged on the side wall of the reset slider (11), a plurality of groups of guide sliding grooves (15) matched with the guide blocks (14) are formed in the side wall of the mounting cavity (3), and a spring (16) is fitted and mounted between the head structure (13) and the reset slider (11).

3. An automatic return hinge according to claim 2, wherein The end adjacent to the hinge shaft (2) of the reset slider (11) is also provided with a recess (17), the periphery of the recess (17) of the reset slider (11) is provided with a protruding portion (18), the periphery of the recess (17) of the hinge shaft (2) is provided with a spiral groove (19) matched with the protruding portion (18), and the second limiting plate (12) is mounted in the recess (17) of the reset slider (11).

4. The automatic return hinge according to claim 1, wherein A mounting hole (20) is formed at the center of the top end of the hinge shaft (2), the mounting hole (20) is a hexagonal structure, the bottom end of the connecting rod (4) is provided with a connecting portion (21) matched with the mounting hole (20), and a through hole (22) is formed at the center of the bottom of the mounting hole (20).

5. The automatic return hinge according to claim 1, wherein The top end of the optical shaft (6) is provided with a hexagonal prism (23), the hexagonal prism (23) and the adjusting plate (7) are tightly inserted together, and the first limiting plate (10) is located on the bottom end side wall of the optical shaft (6).

6. The automatic return hinge according to any one of claims 1-5, wherein, The top end of the hinge body (1) is fixedly provided with a second fixed sheet (24).

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