Hidden hinge capable of stopping and positioning door

Abstract

The utility model discloses a hidden hinge capable of stopping and positioning a door. The hidden hinge further comprises a third shaft arm and an elastic piece which are located between the first shaft arm and the first box body. One end of the first shaft arm is pivotally connected with the third shaft arm, and the other end of the first shaft arm is pivotally connected with the second box body through a fixed shaft; one end of the second shaft arm is pivotally connected with the first box body shaft, and the other end is slidably connected with the second box body through a sliding shaft; the other end, back on to the first shaft arm, of the third shaft arm is in pivot connection with the first box body; the elastic piece is used for driving the sliding shaft to move back to the connecting shaft; the fixed shaft is positioned between the sliding shaft and the connecting shaft; in the door opening process, the sliding shaft axis A moves from the right side of the plane M where the fixed shaft axis B and the connecting shaft axis C are located to the left side of the plane M. When the fixed shaft axis B and the axis A are located on the right side of the plane M, the elastic piece extrudes the sliding shaft to enable the second shaft arm to rotate in the door closing direction. When the axis A is located on the left side of the plane M, the elastic part extrudes the sliding shaft to rotate the second shaft arm towards the door opening direction.

Description

Technical Field

[0001] This utility model relates to the field of furniture hardware, specifically a concealed hinge that can stop and position a door. Background Technology

[0002] A hinge is an assembly hardware component used to rotate between moving parts. It typically consists of two mutually rotating parts. By mounting the two parts onto two relatively moving workpieces, a rotational connection is achieved using a hinge, thereby improving the strength of the rotational connection and the precision of the opening and closing process.

[0003] Please see Figure 1 , 2 Chinese invention patent CN 119266653 A discloses a hinge with a wire-passing structure, specifically disclosing 11, a first housing; 12, a second housing; 2, a rotating connecting part; 21, an H-shaped shaft arm (first shaft arm); 22, a C-shaped shaft arm (second shaft arm); 23, a connecting shaft; and 24, a rotating shaft.

[0004] In existing technologies, concealed hinges cannot remain in the open position. Utility Model Content

[0005] The purpose of this invention is to provide a concealed hinge that can stop and position a door.

[0006] To achieve the above objectives, this utility model provides a concealed hinge for door positioning, comprising a first housing, a second housing, a first axle arm, and a second axle arm. The first axle arm and the second axle arm are rotatably connected at their middle portions via a connecting shaft. The hinge also includes a third axle arm and an elastic element located between the first axle arm and the first housing. One end of the first axle arm is pivotally connected to the third axle arm, and the other end is pivotally connected to the second housing via a fixed shaft. One end of the second axle arm is pivotally connected to the first housing, and the other end is slidably connected to the second housing via a sliding shaft. The other end of the third axle arm, facing away from the first axle arm, is connected to the first housing. The box body is pivotally connected; the elastic element is used to drive the sliding shaft to move away from the connecting shaft; the fixed shaft is located between the sliding shaft and the connecting shaft; during the opening process, the sliding shaft axis A moves from the right side of the plane M where the fixed shaft axis B and the connecting shaft axis C are located to the left side of the plane M. When the fixed shaft axis B and axis A are located on the right side of the plane M, the elastic element squeezes the sliding shaft to make the second shaft arm rotate in the closing direction. When axis A is located on the left side of the plane M, the elastic element squeezes the sliding shaft to make the second shaft arm rotate in the opening direction.

[0007] In one embodiment of the present invention, the sliding shaft is rotatably connected to a slider, and the second box body is provided with a sliding groove that cooperates with the slider. The sliding groove is provided with a first limiting part that abuts against the slider in the open state.

[0008] In one embodiment of this utility model, the sliding shaft is rotatably connected to a pull rod, the pull rod is rotatably connected to a horizontal shaft, and the elastic element is located between the horizontal shaft and the second housing.

[0009] In one embodiment of this utility model, the elastic element is a compression spring.

[0010] In one embodiment of the present invention, the second box body is fixed with a hydraulic buffer device, the piston rod of the hydraulic buffer device extends toward the second shaft arm, and the second shaft arm is provided with a buffer curved surface that cooperates with the piston rod.

[0011] In one embodiment of this invention, the pressure on the piston rod is gradually increased as the second shaft arm rotates toward the closing direction.

[0012] In one embodiment of this utility model, the hydraulic buffer device is used to slow down the closing speed of the second shaft arm.

[0013] In one embodiment of this utility model, the second box body is fixed with a mounting bracket, which has a first through hole for accommodating the hydraulic buffer device. A front plug and a rear plug are threaded to both ends of the first through hole, and the piston rod passes through the front plug.

[0014] In one embodiment of this utility model, the mounting bracket has a second through hole for accommodating the compression spring, and a spring plug is threadedly connected to the second through hole. The second housing and the mounting bracket are connected and fixed by a screw passing through the spring plug, and the second housing is threadedly connected to the screw.

[0015] In one embodiment of this utility model, the number of the pull rods is a pair, the pair of pull rods are located on both sides of the second box body, the mounting bracket has an opening slot to accommodate the horizontal shaft, and the mounting bracket is fitted with a cover.

[0016] In this invention, as the opening angle increases, when the axis A moves to the left side of the plane M, the elastic element squeezes the sliding shaft, causing the second shaft arm to rotate in the opening direction, so that the door can be kept in the open position. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an existing hinge with a wire-passing structure.

[0018] Figure 2 for Figure 1 A structural diagram of a hidden box with a hinged hinge structure.

[0019] Figure 3This is a structural diagram of the concealed hinge with a stop-door positioning mechanism according to the first embodiment of the present invention, where the axis A is located on the right side of the plane M.

[0020] Figure 4 for Figure 3 An exploded view of the concealed hinges that allow the door to be positioned.

[0021] Figure 5 for Figure 4 The structural diagram of the second box body with concealed hinges for door positioning.

[0022] Figure 6 for Figure 4 Structural diagram of the mounting bracket for the concealed hinge that can stop and position the door.

[0023] Figure 7 for Figure 3 A cross-sectional view of the closed state of the concealed hinge of the door that can be positioned for stopping.

[0024] Figure 8 for Figure 3 A cross-sectional view of the partially opened state of the concealed hinges that allow the door to be positioned.

[0025] Figure 9 for Figure 3 A cross-sectional view of the axis A of the concealed hinge for the stop-door positioning moving to plane M.

[0026] Figure 10 for Figure 3 A cross-sectional view of the axis A of the concealed hinge for the stop-door positioning moving to the left side of plane M. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 3-10The concealed hinge for door positioning according to the first embodiment of this utility model includes a first housing 100, a second housing 200, a rotatable connecting part, a first shaft arm 11, and a second shaft arm 12. The first shaft arm 11 and the second shaft arm 12 are rotatably connected at their middle portions via a connecting shaft 21. It also includes a third shaft arm 13 and an elastic element 3 located between the first shaft arm 11 and the first housing 100. One end of the first shaft arm 11 is pivotally connected to the third shaft arm 13, and the other end is pivotally connected to the second housing 200 via a fixed shaft 22. One end of the second shaft arm 12 is pivotally connected to the first housing 100, and the other end is connected to the second housing 200 via a sliding shaft 23. Sliding connection; the other end of the third shaft arm 13 facing away from the first shaft arm 11 is pivotally connected to the first box body 100; the elastic element 3 is used to drive the sliding shaft 23 to move in the direction away from the connecting shaft 21; the fixed shaft 22 is located between the sliding shaft 23 and the connecting shaft 21; during the opening process, the axis A of the sliding shaft 23 moves from the right side of the plane M where the axis B of the fixed shaft 12 and the axis C of the connecting shaft 21 are located to the left side of the plane M. When the axis A is located on the right side of the plane M, the elastic element 3 squeezes the sliding shaft 23 to make the second shaft arm 12 rotate in the closing direction. When the axis A is located on the left side of the plane M, the elastic element 3 squeezes the sliding shaft 23 to make the second shaft arm 12 rotate in the opening direction.

[0029] The sliding shaft 23 is rotatably connected to the slider 4. The second box body 200 is provided with a sliding groove 201 that cooperates with the slider 4. The sliding groove 201 is provided with a first limiting part 201a that abuts against the slider 4 in the open state.

[0030] The sliding shaft 23 is rotatably connected to the pull rod 14, the pull rod 14 is rotatably connected to the horizontal shaft 15, and the elastic element 3 is located between the horizontal shaft 15 and the second box 200.

[0031] Elastic element 3 is a compression spring.

[0032] The second housing 200 is fixed with a hydraulic buffer device 6. The piston rod 61 of the hydraulic buffer device 6 extends toward the second shaft arm 12. The second shaft arm 12 is provided with a buffer curved surface 120 that cooperates with the piston rod 61.

[0033] As the second shaft arm 12 rotates in the direction of closing the door, the pressure on the piston rod 61 gradually increases.

[0034] The hydraulic buffer device is used to slow down the closing speed of the second arm 12.

[0035] The second housing 200 is fixed with a mounting bracket 300. The mounting bracket 300 has a first through hole 300a for accommodating a hydraulic buffer device. The two ends of the first through hole 300a are threadedly connected to a front plug 71 and a rear plug 72. The piston rod 61 passes through the front plug 71.

[0036] The mounting bracket 300 has a second through hole 300b for accommodating a compression spring. A spring plug 8 is threaded into the second through hole 300b. The second housing 200 and the mounting bracket 300 are connected and fixed by a screw 9 passing through the spring plug 8. The second housing 200 is threadedly connected to the screw 9. The screw 9 can be used to adjust the relative position of the second housing 200 and the mounting bracket.

[0037] There is a pair of pull rods 14, which are located on both sides of the second box 200. The mounting bracket 300 has an opening slot 301 for accommodating the horizontal shaft 15, and the mounting bracket 300 is fitted with a cover 400.

[0038] The first shaft arm 11 is provided with a second limiting part 11a that abuts against the second shaft arm 12 when the door is opened.

[0039] During the opening process, such as Figure 7-10 The piston rod abuts against the buffer curved surface 120, and the axis A is located on the right side of the plane M. When the user releases his hand, the elastic element 3 squeezes the sliding shaft 23, which causes the second shaft arm 12 to rotate in the closing direction. As the opening angle gradually increases, when the axis A is in the plane M, the elastic element 3 cannot drive the door to open or close. After opening the door to a certain angle until the first limit part or the second limit part is limited, the axis A is in the left side of the plane M. At this time, the elastic element 3 can maintain the tendency of the door to rotate in the opening direction.

[0040] In this invention, as the opening angle increases, when the axis A moves to the left side of the plane M, the elastic element 3 presses the sliding shaft 23 to cause the second shaft arm 12 to rotate in the opening direction, so that the door can be kept in the open position.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concealed hinge for stopping and positioning a door, comprising a first housing, a second housing, a first axle arm, and a second axle arm, wherein the first axle arm and the second axle arm are rotatably connected at their middle portions via a connecting shaft, characterized in that, It also includes a third shaft arm and an elastic element located between the first shaft arm and the first housing; One end of the first shaft arm is pivotally connected to the third shaft arm, and the other end is pivotally connected to the second housing via a fixed shaft; one end of the second shaft arm is pivotally connected to the first housing via a shaft, and the other end is slidably connected to the second housing via a sliding shaft; the other end of the third shaft arm, facing away from the first shaft arm, is pivotally connected to the first housing; the elastic element is used to drive the sliding shaft to move away from the connecting shaft; the fixed shaft is located between the sliding shaft and the connecting shaft; During the opening process, the sliding shaft axis A moves from the right side of the plane M containing the fixed shaft axis B and the connecting shaft axis C to the left side of the plane M. When the fixed shaft axis B and axis A are located on the right side of the plane M, the elastic element presses the sliding shaft to rotate the second shaft arm in the closing direction. When axis A is located on the left side of the plane M, the elastic element presses the sliding shaft to rotate the second shaft arm in the opening direction.

2. The concealed hinge for door positioning as described in claim 1, characterized in that, The sliding shaft is rotatably connected to a slider, and the second box body is provided with a sliding groove that cooperates with the slider. The sliding groove is provided with a first limiting part that abuts against the slider when the door is open.

3. The concealed hinge for door positioning as described in claim 2, characterized in that, The sliding shaft is rotatably connected to a pull rod, the pull rod is rotatably connected to a horizontal shaft, and the elastic element is located between the horizontal shaft and the second housing.

4. The concealed hinge for door positioning as described in claim 3, characterized in that, The elastic element is a compression spring.

5. The concealed hinge for door positioning as described in claim 4, characterized in that, The second housing is fixed with a hydraulic buffer device, the piston rod of which extends toward the second shaft arm, and the second shaft arm is provided with a buffer curved surface that cooperates with the piston rod.

6. The concealed hinge for door positioning as described in claim 5, characterized in that, As the second shaft arm rotates in the direction of closing the door, the pressure on the piston rod gradually increases.

7. The concealed hinge for door positioning as described in claim 6, characterized in that, The hydraulic buffer device is used to slow down the closing speed of the second arm.

8. The concealed hinge for door positioning as described in claim 7, characterized in that, The second housing is fixed with a mounting bracket, which has a first through hole for accommodating the hydraulic buffer device. A front plug and a rear plug are threaded to both ends of the first through hole, and the piston rod passes through the front plug.

9. The concealed hinge for door positioning as described in claim 8, characterized in that, The mounting bracket has a second through hole for accommodating the compression spring. A spring plug is threaded into the second through hole. The second housing and the mounting bracket are connected and fixed by a screw passing through the spring plug. The second housing is threadedly connected to the screw.

10. The concealed hinge for door positioning as described in claim 9, characterized in that, The number of pull rods is a pair, and the pair of pull rods are located on both sides of the second box body. The mounting bracket has an opening slot to accommodate the horizontal shaft. The mounting bracket is fitted with a cover. The first shaft arm has a second limiting part that abuts against the second shaft arm when the door is opened.

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