Primary-secondary hinge

Abstract

The utility model discloses a primary and secondary hinge which comprises a fixed part, a rotating part and a rotating shaft, the rotating part is rotatably connected with the fixed part through the rotating shaft, a plurality of through holes are formed in the fixed part and the rotating part, the fixed part can be arranged on a door frame, the rotating part can be arranged on a door leaf, and a first cover plate is arranged on one side face of the fixed part. A first cover plate is arranged on one side face of the fixing part and can cover the through hole in the fixing part, a second cover plate is arranged on one side face of the rotating part and can cover the through hole in the rotating part, a concave opening is formed in the fixing part, and the rotating part can rotate to the concave opening.

Description

Technical Field

[0001] The utility model belongs to the technical field of hinges, and in particular relates to a parent-child hinge. Background Art

[0002] A hinge is a connecting part that can connect the door leaf to the door frame. The hinge mainly consists of three parts: a fixed part, a rotating part and a rotating axis. The fixed part is installed on the door frame, while the rotating part is installed on the door leaf. The rotating part can be rotatably connected to the fixed part through the rotating axis, so that the door leaf can rotate around the door frame with the rotating axis as the axis.

[0003] Since hinges are a common connecting part, improvements to hinges are usually reflected in the material, while there will not be many changes to the structure itself.

[0004] Usually, the fixed part and the rotating part of the hinge are the same size, which will result in the fixed part and the rotating part being unable to be completely merged together. Therefore, when installing such a hinge on a door leaf and a door frame, grooves must be cut on both the door leaf and the door frame at the same time, and the fixed part and the rotating part of the hinge must be installed in the grooves, which increases the installation process. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model aims to provide a parent-child hinge.

[0006] The technical solution adopted by the utility model is:

[0007] A hinge comprises a fixed part, a rotating part and a rotating shaft. The rotating part is rotatably connected to the fixed part via the rotating shaft. A plurality of through holes are provided on the fixed part and the rotating part. The fixed part can be arranged on the door frame, and the rotating part can be arranged on the door leaf. A first cover plate is provided on one side of the fixed part, and the first cover plate can cover the through holes on the fixed part. A second cover plate is provided on one side of the rotating part, and the second cover plate can cover the through holes on the rotating part. A concave opening is formed on the fixed part, and the rotating part can rotate to the concave opening.

[0008] In some embodiments, the rotating shaft is fixed to one side of the fixed part, and one side of the rotating part is rotatably connected to the rotating shaft. Thus, through this structure, the rotating part and the fixed part can be connected, and the rotating part can rotate around the rotating shaft.

[0009] In some embodiments, a positioning groove is provided on the rotating shaft, and a screw can pass through the fixing part and be inserted into the positioning groove to fix the rotating shaft and the fixing part together. Two raised rings are also provided on the rotating shaft, and one side of the rotating part is arranged between the raised rings. Thus, the rotating shaft and the fixing part can be fixed together by the screw, and the raised ring plays a role of limiting, and the rotating part can be limited between the two raised rings.

[0010] In some embodiments, the concave opening is rectangular, and the rotating part matches the concave opening, so that the rotating part can be rotated into the concave opening, and the rotating part can be completely closed with the fixed part.

[0011] In some embodiments, positioning pins are provided on both the first cover plate and the second cover plate, and positioning holes are provided at corresponding positions on one side of the fixed portion and one side of the rotating portion, and the positioning pin on the first cover plate can be inserted into the positioning hole of the fixed portion, and the positioning pin on the second cover plate can be inserted into the positioning hole of the rotating portion. Thus, the first cover plate can be arranged on one side of the fixed portion by the positioning pins, and the second cover plate can also be arranged on one side of the rotating portion by the positioning pins.

[0012] In some embodiments, the fixed part and the rotating part are both provided with four positioning holes, the first cover plate is also connected to the fixed part by adhesive, and the second cover plate is also connected to the rotating part by adhesive. Thus, the first cover plate can be attached to the fixed part by adhesive and will not fall off, and correspondingly, the second cover plate can be attached to the rotating part by adhesive.

[0013] In some embodiments, the fixed part is provided with a first positioning protrusion, which is arranged along the length direction of the fixed part, and the rotating part is provided with a second positioning protrusion, which is arranged along the length direction of the rotating part. Thus, by providing the positioning protrusion, the fixed part can be installed on the door frame, and the rotating part can also be installed on the door leaf.

[0014] The beneficial effects of the utility model are:

[0015] In the utility model, a concave opening is formed on the fixed part, and the rotating part can rotate to the concave opening. Since the rotating part matches the concave opening, that is, the size of the rotating part is consistent with the concave opening, the rotating part can be completely overlapped with the concave opening. Therefore, there is no need to make grooves on the door leaf and the door frame at the same time. When the fixed part is installed on the door frame and the rotating part is installed on the door leaf, the rotating part can still be completely overlapped at the concave opening, and the overlapping rotating part and the fixed part can form a whole.

[0016] In addition, the utility model is also provided with a first cover plate and a second cover plate. The first cover plate can completely cover the through holes on the fixed part, and the second cover plate can also completely cover the through holes on the rotating part, so that users can have a better use experience.

[0017] Furthermore, the utility model is also provided with a first positioning protrusion and a second positioning protrusion, which can more quickly install the utility model on the door frame and the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a structural schematic diagram of a parent-child hinge according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 The schematic diagram of the structure of the mother-and-child hinge after hiding the first cover plate and the second cover plate;

[0020] Figure 3 for Figure 1 A partial structural schematic diagram of the mother-and-child hinge shown;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure of the first cover plate and the second cover plate in the mother-and-child hinge;

[0022] Figure 5 for Figure 1 A schematic diagram of the structure of the mother-and-child hinge in another direction after the mother-and-child hinge hides the first cover plate and the second cover plate;

[0023] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part A shown.

[0024] In the figure: 1-fixing part; 11-concave opening; 12-first positioning protrusion; 2-rotating part; 21-second positioning protrusion; 3-rotating shaft; 31-positioning groove; 4-first cover plate; 5-second cover plate; 6-positioning pin; 7-positioning hole. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Figure 1 to Figure 6 The structure of a parent-child hinge in one embodiment of the utility model is schematically shown.

[0027] like Figure 1 to Figure 6 As shown, a hinge includes a fixed part 1, a rotating part 2 and a rotating shaft 3. The rotating part 2 is rotatably connected to the fixed part 1 through the rotating shaft 3. A plurality of through holes are provided on both the fixed part 1 and the rotating part 2. The screws can be screwed through the through holes on the fixed part 1 to set the fixed part 1 on the door frame, that is, the screws pass through the through holes on the fixed part 1 and the fixed part 1 is installed on the door frame. Similarly, the screws can be screwed through the through holes on the rotating part 2 to set the rotating part 2 on the door leaf, that is, the screws pass through the through holes on the rotating part 2 and the rotating part 2 is installed on the door frame.

[0028] like Figure 1 and Figure 2As shown, a first cover plate 4 can be installed on the upper side of the fixed part 1, and the first cover plate 4 can cover the through hole on the fixed part 1. A second cover plate 5 can be installed on the upper side of the rotating part 2, and the second cover plate 5 can cover the through hole on the rotating part 2. At the same time, a concave opening 11 is formed on the fixed part 1, and the rotating part 2 can rotate to the concave opening 11, so that the rotating part 2 can completely overlap with the concave opening 11.

[0029] like Figure 2 As shown, the rotating shaft 3 is fixed on the right side of the fixed part 1, and the left side of the rotating part 2 is rotatably connected to the rotating shaft 3. Through this structure, the rotating part 2 and the fixed part 1 can be connected, and the rotating part 2 can rotate around the rotating shaft 3. When the rotating part 2 is installed on the door leaf and the fixed part 1 is installed on the door frame, the door leaf can rotate around the door frame, that is, the door leaf can be opened or closed.

[0030] like Figure 3 As shown, in this embodiment, a positioning groove 31 can be integrally formed on the rotating shaft 3, and a screw can pass through the fixing part 1 and be inserted into the positioning groove 31, and the rotating shaft 3 and the fixing part 1 can be fixed together. Two raised rings 32 are also integrally formed on the rotating shaft 3, and one side of the rotating part 2 is arranged between the raised rings 32. At the same time, the width of the raised ring 32 is greater than the width of one side of the rotating part 2, and the rotating shaft 3 can be clamped between the two raised rings 32. The rotating shaft 3 and the fixing part 1 can be fixed together by screws, and the raised ring 32 plays a role of limiting, and the rotating part 2 can be restricted between the two raised rings 32, and the rotating part 2 will not move longitudinally.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, the concave opening 11 is in a rectangular shape, the rotating part 2 cooperates with the concave opening 11, the rotating part 2 can be rotated into the concave opening 11, and the rotating part 2 can be completely closed with the fixed part 1, that is, the rotating part 2 will not hinder the rotation of the fixed part 1.

[0032] like Figure 3 and Figure 4 As shown, the first cover plate 4 and the second cover plate 5 are both formed with positioning pins 6. Figure 2 In the figure, positioning holes 7 are integrally formed at corresponding positions on the upper side surface of the fixed part 1 and the upper side surface of the rotating part 2. The positioning pins 6 on the first cover plate 4 can be inserted into the positioning holes 7 of the fixed part 1, and the positioning pins 6 on the second cover plate 5 can be inserted into the positioning holes 7 of the rotating part 2. The first cover plate 4 can be fixed to one side surface of the fixed part 1 through the positioning pins 6, and the second cover plate 5 can also be fixed to one side surface of the rotating part 2.

[0033] like Figure 2As shown, four positioning holes 7 can be formed on the fixed part 1 and the rotating part 2, the first cover plate 4 is also connected to the fixed part 1 by adhesive, and the second cover plate 5 is also connected to the rotating part 2 by adhesive, and the first cover plate 4 can be pasted on the fixed part 1 by adhesive without being detached, and correspondingly, the second cover plate 5 can be pasted on the rotating part 2 by adhesive. Of course, in other embodiments, the number of positioning holes on the fixed part 1 and the rotating part 2 can be set according to actual conditions, such as: the number of positioning holes on the fixed part 1 and the rotating part 2 can be three or five.

[0034] like Figure 5 and Figure 6 As shown, a first positioning protrusion 12 is integrally formed on the fixed part 1, and the first positioning protrusion 12 is arranged along the length direction of the fixed part 1. A second positioning protrusion 21 is integrally formed on the rotating part 2, and the second positioning protrusion 21 is arranged along the length direction of the rotating part 2. By providing the first positioning protrusion 12, the fixed part 1 can be more conveniently installed on the door frame, and by providing the second positioning protrusion 21, the rotating part 2 can also be more conveniently installed on the door leaf. Specifically, the first positioning protrusion 12 and the second positioning protrusion 21 are both elongated structures.

[0035] The following is a detailed description of the utility model as a whole: in the utility model, a concave opening 11 is formed on the fixed part 1, and the rotating part 2 can rotate to the concave opening 11, and because the rotating part 2 matches the concave opening 11, that is, the size of the rotating part 2 is consistent with the concave opening, so that the rotating part 2 can be completely overlapped with the concave opening. Therefore, there is no need to groove the door leaf and the door frame at the same time. When the fixed part 1 is installed on the door frame and the rotating part 2 is installed on the door leaf, the rotating part 2 can still be completely overlapped at the concave opening, and the overlapping rotating part 2 and the fixed part 1 can form a whole.

[0036] In addition, the utility model is further provided with a first cover plate 4 and a second cover plate 5. The first cover plate 4 can completely cover the through hole on the fixed part 1, and the second cover plate 5 can also completely cover the through hole on the rotating part 2, so that the user can have a better use experience.

[0037] Furthermore, the present invention is also provided with a first positioning protrusion 12 and a second positioning protrusion 21, so that the present invention can be installed on the door frame and the door leaf more quickly.

[0038] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A hinge, comprising a fixed portion (1), a rotating portion (2) and a rotating shaft (3), wherein the rotating portion (2) is rotatably connected to the fixed portion (1) via the rotating shaft (3), and a plurality of through holes are provided on the fixed portion (1) and the rotating portion (2), wherein the fixed portion (1) can be arranged on a door frame, and the rotating portion (2) can be arranged on a door leaf, characterized in that: A first cover plate (4) is provided on one side surface of the fixed portion (1), and the first cover plate (4) can cover the through hole on the fixed portion (1); a second cover plate (5) is provided on one side surface of the rotating portion (2), and the second cover plate (5) can cover the through hole on the rotating portion (2); a concave opening (11) is formed on the fixed portion (1), and the rotating portion (2) can rotate to the concave opening (11).

2. The parent-child hinge according to claim 1, characterized in that: The rotating shaft (3) is fixed to one side of the fixed part (1), and one side of the rotating part (2) is rotatably connected to the rotating shaft (3).

3. The parent-child hinge according to claim 2, characterized in that: The rotating shaft (3) is provided with a positioning groove (31), and a screw can pass through the fixing part (1) and be inserted into the positioning groove (31) to fix the rotating shaft (3) and one side of the fixing part (1) together. The rotating shaft (3) is also provided with two raised rings (32), and one side of the rotating part (2) is arranged between the raised rings (32).

4. The parent-child hinge according to claim 3, characterized in that: The concave opening (11) is in a rectangular shape, and the rotating portion (2) matches the concave opening (11).

5. The parent-child hinge according to claim 4, characterized in that: The first cover plate (4) and the second cover plate (5) are both provided with positioning pins (6), and positioning holes (7) are provided at corresponding positions on one side surface of the fixed portion (1) and at corresponding positions on one side surface of the rotating portion (2); the positioning pin on the first cover plate (4) can be inserted into the positioning hole of the fixed portion (1), and the positioning pin on the second cover plate (5) can be inserted into the positioning hole of the rotating portion (2).

6. The parent-child hinge according to claim 5, characterized in that: The fixed part (1) and the rotating part (2) are both provided with four positioning holes (7); the first cover plate (4) is also connected to the fixed part (1) by means of adhesive; and the second cover plate (5) is also connected to the rotating part (2) by means of adhesive.

7. The parent-child hinge according to claim 6, characterized in that: The fixed portion (1) is provided with a first positioning protrusion (12), and the first positioning protrusion (12) is arranged along the length direction of the fixed portion (1); the rotating portion (2) is provided with a second positioning protrusion (21), and the second positioning protrusion (21) is arranged along the length direction of the rotating portion (2).

Images