Primary-secondary hinge and door mounting structure

Abstract

The utility model provides a primary and secondary hinge and a door mounting structure. The primary and secondary hinge comprises a primary hinge plate, a secondary hinge plate and a connecting shaft, the middle of one side of the female hinge plate is provided with a receding area extending towards the opposite side, and the portions, located on the two sides of the receding area, of the female hinge plate are each provided with a connecting arm. The secondary hinge plate is positioned between the two connecting arms and is rotationally connected with the two connecting arms through a connecting shaft; wherein the primary hinge plate and the secondary hinge plate are both continuously bent to form step surfaces, and when the secondary hinge plate is overturned to the clearance area, the step surfaces of the secondary hinge plate and the primary hinge plate are flush with each other. The door mounting structure comprises a door pocket, a door plate and at least one primary and secondary door hinge. According to the primary-secondary hinge and the door installation structure, the structural strength and the bearing capacity can be improved through the bent step face, the sealing effect of the door installation structure can be improved, the problems of light leakage and sound transmission of a door crack are avoided, the texture of the door installation structure is improved, and the service life of the door installation structure is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of door and window hinge technology, specifically relating to a mother-and-child hinge and door installation structure. Background Technology

[0002] With the increasing market demand for high-end and aesthetically pleasing door and window installation structures, the application of hinges is becoming more and more widespread. This is especially true for double doors or T-shaped doors, where hinges are now the primary choice. Existing hinges typically use a traditional hinge structure, with the mother and son plates of the hinge offset vertically and connected by pins. While structurally simple, this design lacks load-bearing capacity and stability. Since double doors and T-shaped doors are often quite heavy, it is necessary to develop high-strength and load-bearing hinges to avoid structural deformation caused by door weight and opening force. Utility Model Content

[0003] This utility model provides a hinge and door installation structure, which aims to improve the structural strength and load-bearing capacity of the hinge and enhance the stability and sealing of the door installation structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a mother-daughter hinge is provided, including a mother hinge plate, a daughter hinge plate, and a connecting shaft; the mother hinge plate has a clearance area extending towards the opposite side in the middle of one side, and a connecting arm is formed on each side of the mother hinge plate located in the clearance area; the daughter hinge plate is located between the two connecting arms and is rotatably connected to the two connecting arms through the connecting shaft; wherein, both the mother hinge plate and the daughter hinge plate are continuously bent to form stepped surfaces, and when the daughter hinge plate is flipped to the clearance area, the stepped surfaces of the daughter hinge plate and the mother hinge plate are flush with each other.

[0005] In conjunction with the first aspect, in one possible implementation, the ends of the two connecting arms respectively form a first connecting sleeve that is coaxial with each other, and the edge of the sub-hing plate forms a second connecting sleeve; wherein the connecting shaft passes through both the first connecting sleeve and the second connecting sleeve together.

[0006] In some embodiments, limit caps are detachably connected to both ends of the connecting shaft, and the limit caps abut against the first connecting sleeve.

[0007] For example, a spacer bearing is provided between each of the two ends of the second connecting sleeve and the two first connecting sleeves, and the spacer bearing is fitted onto the connecting shaft; wherein the inner ring and outer ring of the spacer bearing abut against one of the first connecting sleeve and the second connecting sleeve respectively.

[0008] For example, the connecting arm is provided with a first clearance groove near the first connecting sleeve, and the sub-hing plate is provided with a second clearance groove near the second connecting sleeve; wherein, a clearance space is formed between the first clearance groove and the second clearance groove, and the spacer bearing is located in the clearance space.

[0009] In some embodiments, a plurality of first connecting holes are spaced apart on the mother hinge plate, one end of each first connecting hole being a conical opening; and a plurality of second connecting holes are spaced apart on the daughter hinge plate, one end of each second connecting hole being a conical opening; wherein, when the daughter hinge plate is flipped to the clearance area, the conical openings of the first and second connecting holes are opposite to each other.

[0010] The beneficial effects of the mother-and-child hinge provided by this utility model are as follows: Compared with the prior art, the mother-and-child hinge of this utility model provides installation space for the child hinge by setting a clearance area in the middle of one side of the mother hinge plate. This allows the child hinge plate to be installed between the two connecting arms of the mother hinge plate via a connecting shaft. The two connecting arms provide axial load-bearing support and anti-detachment constraint for the child hinge plate, thereby improving the connection strength and stability between the child and mother hinge plates. Both the mother and child hinge plates are continuously bent stepped surfaces. This not only improves the structural strength and load-bearing capacity of both through the bending structure, but also, because the stepped surface of the child hinge plate can be flush with the stepped surface of the mother hinge plate when it is flipped to the clearance area, it can cover the door gap by using the cooperation of the bent parts while ensuring that the door installation gap is small enough, thereby improving the sealing effect of the door installation structure and avoiding the problems of light and sound leakage through the door gap.

[0011] Secondly, this utility model embodiment also provides a door installation structure, including a door frame, a door panel, and at least one of the aforementioned female and male hinges; wherein, the female hinge plate is fixedly connected to the door frame, and the male hinge plate is fixedly connected to the door panel.

[0012] In conjunction with the second aspect, in one possible implementation, the edge of the door frame has a first stepped surface, which is fitted and fixed to the stepped surface of the mother hinge plate; the side wall of the door panel has a second stepped surface, which is fitted and fixed to the stepped surface of the child hinge plate.

[0013] For example, a door stop is provided on the door frame, which abuts against the door stop when the door panel is closed to be flush with the end face of the door frame.

[0014] In some embodiments, a sealing strip is attached to the door stop, which cooperates with the door stop to press the sealing strip together when the door is closed.

[0015] The beneficial effects of the door mounting structure provided by this utility model are as follows: Compared with the prior art, the door mounting structure of this utility model adopts at least one of the above-mentioned male and female hinges. The female hinge plate can use its two connecting arms to provide axial load support and anti-disengagement constraint for the male hinge plate, thereby improving the connection strength and stability between the male and female hinge plates. Both the female and male hinge plates are continuously bent stepped surfaces, which not only improves the structural strength and load-bearing capacity of both by utilizing the bending structure, but also, since the stepped surface of the male hinge plate can be flush with the stepped surface of the female hinge plate when the male hinge plate is flipped to the clearance area, the door gap can be covered by the cooperation of the bent parts while ensuring that the door installation gap is small enough, thereby improving the sealing effect of the door mounting structure and avoiding the problems of light transmission and sound leakage through the door gap. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the hinge provided in an embodiment of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the mother hinge plate and the daughter hinge plate used in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the cross-sectional structure of the door mounting structure provided in this embodiment of the utility model when the door panel is opened;

[0019] Figure 4 A schematic diagram of the cross-sectional structure of the door mounting structure provided in this embodiment of the present invention when the door panel is closed.

[0020] In the diagram: 10. Female hinge plate; 11. Clearance area; 12. Connecting arm; 121. First connecting sleeve; 122. First clearance groove; 13. First connecting hole; 20. Female hinge plate; 21. Second connecting sleeve; 22. Second clearance groove; 23. Second connecting hole; 30. Connecting shaft; 31. Limiting cap; 40. Spacer bearing; 50. Door frame; 51. First stepped surface; 52. Door stop strip; 53. Sealing strip; 60. Door panel; 61. Second stepped surface. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "height," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0023] Please refer to the following: Figure 1 and Figure 2 The present invention provides a description of the mother-daughter hinge. The mother-daughter hinge includes a mother hinge plate 10, a daughter hinge plate 20, and a connecting shaft 30. The mother hinge plate 10 has a clearance area 11 extending towards the opposite side in the middle of one side, and a connecting arm 12 is formed on each side of the mother hinge plate 10 located in the clearance area 11. The daughter hinge plate 20 is located between the two connecting arms 12 and is rotatably connected to the two connecting arms 12 via the connecting shaft 30. Both the mother hinge plate 10 and the daughter hinge plate 20 are continuously bent to form stepped surfaces. When the daughter hinge plate 20 is flipped to the clearance area 11, the stepped surfaces of the daughter hinge plate 20 and the mother hinge plate 10 are flush with each other.

[0024] It should be noted that in this embodiment, both the female hinge plate 10 and the male hinge plate 20 can be integrally stamped parts made of steel plate or stainless steel. The connecting shaft 30 is a through shaft that passes through both the female hinge plate 10 and the male hinge plate 20. In order to improve the ease of opening and closing of the male hinge plate 20 and the female hinge plate 10, the connecting shaft 30 is rotated with the male hinge plate 20 or the female hinge plate 10, or with both, through bearings. In order to avoid abnormal noise from rotational friction, the parts of the male hinge plate 20 and the female hinge plate 10 through which the connecting shaft 30 passes can be fitted with sound-absorbing and wear-resistant washers such as polytetrafluoroethylene washers.

[0025] It should be understood that, under normal circumstances, both the mother hinge plate 10 and the daughter hinge plate 20 are flat structures. Since flat structures are insufficient in terms of structural stiffness and resistance to bending and torsion, in this embodiment, both are set as continuously bent stepped surface structures, thereby improving the structural stiffness and load-bearing capacity of both the mother hinge plate 10 and the daughter hinge plate 20. Based on this, the door structure installed using the mother and daughter hinges provided in this embodiment is correspondingly set with an installation surface that matches the stepped surface, thereby changing the door gap from a conventional straight gap to a folded gap, thus preventing light and sound leakage from the door gap and improving the sealing effect of the door installation structure.

[0026] Compared with the prior art, the female hinge provided in this embodiment provides an installation space for the male hinge 20 by setting a clearance area 11 in the middle of one side of the female hinge plate 10. This allows the male hinge 20 to be installed between the two connecting arms 12 of the female hinge plate 10 via the connecting shaft 30. The two connecting arms 12 provide axial load support and anti-detachment constraint for the male hinge 20, thereby improving the connection strength and stability between the male hinge 20 and the female hinge plate 10. Both the female hinge plate 10 and the male hinge plate 20 are continuously bent stepped surfaces. This not only improves the structural strength and load-bearing capacity of both, but also ensures that the stepped surface of the male hinge plate 20 is flush with the stepped surface of the female hinge plate 10 when it is flipped to the clearance area 11. Therefore, the door gap can be covered by the cooperation of the bent parts while ensuring that the door installation gap is small enough, thereby improving the sealing effect of the door installation structure and avoiding the problems of light and sound leakage through the door gap.

[0027] In some embodiments, see Figure 1 and Figure 2 The ends of the two connecting arms 12 respectively form coaxial first connecting sleeves 121, and the edge of the sub-hinged plate 20 forms a second connecting sleeve 21; wherein the connecting shaft 30 passes through both first connecting sleeves 121 and second connecting sleeves 21. Here, the diameter of the first connecting sleeve 121 can preferably be set to be consistent with the bending dimension of the connecting arm 12, that is, the distance between the opposing surfaces of the connecting arm 12 on both sides of the bending part is the same as the outer diameter of the first connecting sleeve 121, and the part of the connecting arm 12 between the bending part and the first connecting sleeve 121 is tangent to the first connecting sleeve 121; similarly, the outer diameter of the second connecting sleeve 21 is equal to the distance between the opposing surfaces of the sub-hinged plate 20 on both sides of the bending part, and the part of the sub-hinged plate 20 between its bending part and the second connecting sleeve 21 is tangent to the second connecting sleeve 21.

[0028] The first connecting sleeve 121 can be integrally formed on the mother hinge plate 10 by stamping and bending, and the second connecting sleeve 21 can also be integrally formed on the daughter hinge plate 20, thereby ensuring the overall structural strength. On this basis, the first connecting sleeve 121 and the second connecting sleeve 21 form a shaft hole suitable for the connecting shaft 30 to pass through, thereby realizing the connection. The structure is simple and reliable.

[0029] For details, please refer to Figure 1 Limiting caps 31 are detachably connected to both ends of the connecting shaft 30, and the limiting caps 31 abut against the first connecting sleeve 121. The limiting caps 31 can be pressed and fixed to the end of the connecting shaft 30, or they can be screwed and fixed to the end of the connecting shaft 30 based on a threaded fit. By setting the limiting caps 31, the connecting shaft 30 can be axially positioned, thereby preventing the connecting shaft 30 from falling off and affecting the connection stability.

[0030] For some possible implementations, please refer to [link / reference]. Figure 1 The two ends of the second connecting sleeve 21 are respectively sandwiched between the two first connecting sleeves 121 and the spacer bearing 40, and the spacer bearing 40 is fitted on the connecting shaft 30; wherein, the inner ring and the outer ring of the spacer bearing 40 abut against one of the first connecting sleeve 121 and the second connecting sleeve 21 respectively.

[0031] The spacer bearing 40 serves two purposes: firstly, it improves the relative rotational ease between the first connecting sleeve 121 and the second connecting sleeve 21; secondly, it utilizes the relative rotational freedom of its inner and outer rings to avoid frictional noise caused by direct contact between the first connecting sleeve 121 and the second connecting sleeve 21, thereby avoiding motion wear and improving the stable service life of the hinge.

[0032] It should be noted that, as Figure 2 As shown, the connecting arm 12 near the first connecting sleeve 121 has a first clearance groove 122, and the sub-hinged plate 20 near the second connecting sleeve 21 has a second clearance groove 22; wherein, a clearance space is formed between the first clearance groove 122 and the second clearance groove 22, and the spacer bearing 40 is located in the clearance space. By setting the first clearance groove 122 and the second clearance groove 22 to form a clearance space, the clearance distance between the edge of the sub-hinged plate 20 and the boundary of the clearance area 11 can be reduced, thereby making the mating structure of the sub-hinged plate 20 and the mother hinge plate 10 more compact and reliable.

[0033] like Figure 1 As shown, to achieve installation and fixation, the aforementioned mother hinge plate 10 has a plurality of first connecting holes 13 spaced apart, one end of each first connecting hole 13 being a tapered opening. The daughter hinge plate 20 has a plurality of second connecting holes 23 spaced apart, one end of each second connecting hole 23 being a tapered opening. When the daughter hinge plate 20 is flipped to the clearance area 11, the tapered openings of the first connecting holes 13 and the second connecting holes 23 are opposite to each other. The purpose of setting the tapered openings is to allow for installation and fixation using fasteners such as tapered screws, with the ends of the fasteners recessed within the tapered openings. This prevents the fasteners from protruding from the surfaces of the mother hinge plate 10 and the daughter hinge plate 20 and interfering with the switching movement, while also improving the aesthetics of the installation.

[0034] Based on the same inventive concept, combined with Figures 1 to 4 It is understood that this application embodiment also provides a door installation structure, including a door frame 50, a door panel 60, and at least one of the above-mentioned female and male hinges; wherein, the female hinge plate 10 is fixedly connected to the door frame 50, and the male hinge plate 20 is fixedly connected to the door panel 60.

[0035] Compared with the prior art, the door installation structure provided in this embodiment adopts at least one of the aforementioned male and female hinges. The female hinge plate 10 can provide axial load support and anti-detachment constraint for the male hinge plate 20 using its two connecting arms 12, thereby improving the connection strength and stability between the male and female hinge plates 20 and 10. Both the female hinge plate 10 and the male hinge plate 20 are continuously bent stepped surfaces. This not only improves the structural strength and load-bearing capacity of both, but also, since the stepped surface of the male hinge plate 20 can be flush with the stepped surface of the female hinge plate 10 when it is flipped to the clearance area 11, the door gap can be covered by the cooperation of the bent parts while ensuring that the door installation gap is small enough. This improves the sealing effect of the door installation structure and avoids the problems of light transmission and sound leakage through the door gap.

[0036] Specifically, please refer to Figure 3 and Figure 4 In this embodiment, the edge of the door frame 50 has a first stepped surface 51, which is fitted and fixed to the stepped surface of the mother hinge plate 10; the side wall of the door panel 60 has a second stepped surface 61, which is fitted and fixed to the stepped surface of the daughter hinge plate 20. The fitting of the first stepped surface 51 with the stepped surface of the mother hinge plate 10 can position the mother hinge plate 10, avoiding misalignment of the mother hinge plate 10 caused by collisions when the door panel 60 is opened and closed, thereby improving the connection stability of the mother hinge plate 10; similarly, the second stepped surface 61 can also cooperate with the stepped surface of the daughter hinge plate 20 to form a positioning, thereby improving the connection stability between the daughter hinge plate 20 and the door panel 60; in addition, when the door panel 60 is closed, the first stepped surface 51 and the second stepped surface 61 cooperate to form a Z-shaped curved door gap, which has better sealing performance and appearance than the conventional straight door gap structure, and is conducive to avoiding the problem of light transmission through the door gap and blocking sound transmission.

[0037] To improve the accuracy and stability of the closing position of door panel 60, such as Figure 4 As shown, a door stop strip 52 is provided on the door frame 50, which abuts against the door stop strip 52 when the door panel 60 is closed to be flush with the end face of the door frame 50. This prevents the door panel 60 from closing too far, which could cause excessive stress between the sub-hinged plate 20 and the door panel 60 and lead to loosening of the connection, thus helping to extend the life of the door installation structure.

[0038] It should be noted that you should refer to [link / reference]. Figure 4A sealing strip 53 is attached to the aforementioned door stop 52, which cooperates with the door stop 52 to press the sealing strip 53 together when the door panel 60 is closed. By setting the sealing strip 53, the sealing performance of the door panel 60 when closed can be improved, preventing light and sound leakage. On the other hand, it can also provide a flexible buffer for the edge of the door panel 60 when it is closed, which can not only avoid impact noise when closing the door, but also play a protective role and help to extend the life of the door panel 60.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hinge, characterized in that, The system includes a mother hinge, a son hinge, and a connecting shaft. The mother hinge has a clearance area extending towards the opposite side in the middle of one side, and a connecting arm is formed on each side of the clearance area. The son hinge is located between the two connecting arms and is rotatably connected to them via the connecting shaft. Both the mother and son hinges are continuously bent to form stepped surfaces, and when the son hinge is flipped to the clearance area, the stepped surfaces of the son and mother hinges are flush with each other.

2. The hinge as described in claim 1, characterized in that, The ends of the two connecting arms respectively form a first connecting sleeve that is coaxial with each other, and the edge of the sub-hing plate forms a second connecting sleeve; wherein the connecting shaft passes through both the first connecting sleeve and the second connecting sleeve together.

3. The hinge as described in claim 2, characterized in that, Both ends of the connecting shaft are detachably connected to limit caps, which abut against the first connecting sleeve.

4. The hinge as described in claim 2, characterized in that, The two ends of the second connecting sleeve are respectively sandwiched between the two first connecting sleeves and spacer bearings, and the spacer bearings are fitted onto the connecting shaft; wherein the inner ring and outer ring of the spacer bearings abut against one of the first connecting sleeves and the second connecting sleeve.

5. The hinge as described in claim 4, characterized in that, The connecting arm is provided with a first clearance groove near the first connecting sleeve, and the sub-hing plate is provided with a second clearance groove near the second connecting sleeve; wherein, a clearance space is formed between the first clearance groove and the second clearance groove, and the spacer bearing is located in the clearance space.

6. The hinge as described in any one of claims 1-5, characterized in that, The mother hinge plate has a plurality of first connecting holes spaced apart, one end of each first connecting hole being a conical opening. The daughter hinge plate has a plurality of second connecting holes spaced apart, one end of each second connecting hole being a conical opening. When the daughter hinge plate is flipped to the clearance area, the conical openings of the first connecting holes and the second connecting holes are opposite to each other.

7. A door installation structure, characterized in that, It includes a door frame, a door panel, and at least one female hinge as described in any one of claims 1-6; wherein the female hinge plate is fixedly connected to the door frame, and the male hinge plate is fixedly connected to the door panel.

8. The door mounting structure as described in claim 7, characterized in that, The edge of the door frame has a first stepped surface, which is fitted and fixed to the stepped surface of the mother hinge plate; the side wall of the door panel has a second stepped surface, which is fitted and fixed to the stepped surface of the child hinge plate.

9. The door mounting structure as described in claim 8, characterized in that, The door frame is provided with a door stop strip, which abuts against the door stop strip when the door panel is closed to be flush with the end face of the door frame.

10. The door mounting structure as described in claim 9, characterized in that, A sealing strip is attached to the door stop strip, which cooperates with the door stop strip to press the sealing strip together when the door panel is closed.

Images