A door and window hinge with strong load-bearing capacity and smooth movement

Abstract

The utility model discloses a door and window hinge with strong load-bearing capacity and stable movement, comprising a base, a forearm, a support arm and a rear arm, a movable connection structure is provided between one end of the forearm and the base, the other end of the forearm is rotatably connected to the support arm, one end of the rear arm is rotatably connected to the support arm, and the other end of the rear arm is rotatably connected to the base; the movable connection structure comprises a track guide hole provided on the base, and a rotating shaft and a positioning column provided on the forearm, the track guide hole comprises a sliding track hole extending along the length direction of the base, and a rotating track hole provided at the front end of the sliding track hole and deflected toward the indoor side, and the rotating shaft and the positioning column can cooperate with the sliding track hole and the rotating track hole. The utility model has the advantages of ensuring the opening and closing angles of doors and windows and improving the load-bearing capacity and movement stability of the hinge.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window hinges, in particular to a door and window hinge with strong load-bearing capacity and stable movement. Background Art

[0002] In traditional door and window hinge designs, the connection method of the forearm (also called the short arm) has a significant impact on the overall performance of the hinge. Generally, the forearm can be connected to the base in two main ways: one is to directly rotate on the base, and the other is to first rotate on a slider, and then the slider is slidably connected to the base. These two structures have some inherent disadvantages.

[0003] First, for the structure where the forearm is directly connected to the base, in order to ensure that the doors and windows can achieve a larger opening and closing angle, the forearm is often designed to be longer. This design also increases the moment of force on the hinge, resulting in a decrease in the bearing capacity of the hinge. The longer forearm design makes it easier for the hinge to bend or deform when bearing the weight of the door and window, thus affecting its stability and durability.

[0004] Secondly, for the structure in which the forearm is both rotating and slidingly connected to the base, the movement mechanism of this design is more complicated. In this structure, the forearm not only needs to rotate, but also needs to slide at the same time, which increases the variables in the movement process and makes the movement of the hinge not smooth enough. In addition, this complex movement mechanism will also lead to increased wear between the hinge parts, thereby shortening the service life of the hinge.

[0005] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the present invention is made based on this situation. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide a door and window hinge which can ensure the opening and closing angles of doors and windows and improve the bearing capacity of the hinge and the stability of movement.

[0007] The utility model is realized by the following technical solutions:

[0008] In order to solve the above technical problems, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, including a base, a front arm, a support arm and a rear arm, a movable connection structure is provided between one end of the front arm and the base, the other end of the front arm is rotatably connected to the support arm, one end of the rear arm is rotatably connected to the support arm, and the other end of the rear arm is rotatably connected to the base; the movable connection structure includes a track guide hole provided on the base, and a rotating shaft and a positioning column provided on the forearm, the track guide hole includes a sliding track hole extending along the length direction of the base, and a rotating track hole provided at the front end of the sliding track hole and deflected toward the indoor side, and the rotating shaft and the positioning column can both cooperate with the sliding track hole and the rotating track hole;

[0009] When the rotating shaft and the positioning column are both located in the sliding track hole, the forearm can only slide forward and backward; when the rotating shaft is located in the sliding track hole and the positioning column is located in the rotating track hole, the forearm can rotate inward and outward.

[0010] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, wherein the sliding track hole is a strip hole, and the rotating track hole is a strip hole inclined from back to front inside the room or an arc hole extending toward the inside of the room.

[0011] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, in which a rotatable rigid protective cover is sleeved on the rotating shaft.

[0012] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, wherein the diameters of the rigid protective sleeve and the positioning column are matched with the widths of the sliding track hole and the rotating track hole.

[0013] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, wherein the base is provided with a reinforcing plate located at the track guide hole, and the track guide hole passes through the reinforcing plate from bottom to top.

[0014] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, in which the indoor side of the reinforcing plate is provided with a reinforcing pressing edge, and the reinforcing pressing edge first extends upward and then extends to the outdoor side to form a reinforced limiting groove, and the end of the indoor end of the forearm is inserted into the reinforced limiting groove and can slide and swing therein.

[0015] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, in which the base is provided with a rear limit column located on the rear side of the sliding track hole, and the end of the forearm is provided with a first limit notch that can abut and cooperate with the rear limit column.

[0016] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, wherein the base is provided with a front limit column located in front of the sliding track hole, and the side of the forearm is provided with a second limit notch that can abut and cooperate with the front limit column.

[0017] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, wherein the door and window hinge also includes a reinforcing arm, one end of the reinforcing arm is rotatably connected to the middle part of the rear arm, and the other end of the reinforcing arm is rotatably connected to a slider, and the slider is slidably connected to the base along the length direction of the base.

[0018] In order to further solve the technical problem to be solved by the utility model, the utility model provides a door and window hinge with strong load-bearing capacity and smooth movement, in which the front end of the support arm is fixedly connected with an entry plate, the front end of the entry plate extends out of the support arm and is provided with an entry guide opening, and the front end of the base is provided with a guide roller, and the entry guide opening is an arc-shaped opening that can cooperate with the guide roller.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. Smooth opening process: The hinge is designed with sliding track holes and rotating track holes, as well as a rotating shaft and a positioning column that can cooperate with the sliding track holes and the rotating track holes. This design allows the forearm to rotate and swing at the beginning of opening, and then transform into translational motion. This dual motion mechanism makes the opening process of doors and windows smoother, reducing resistance and noise during opening.

[0021] 2. Reduce wear and extend service life: When the forearm swings out to a certain angle, the positioning column and the shaft enter the sliding track hole, and the forearm can only move forward and backward. That is, by limiting the movement of the forearm after swinging out to a certain angle to a single translational movement, the complexity and variables in the movement process are reduced, thereby reducing wear and tear and improving the durability and service life of the hinge.

[0022] 3. Improve the load-bearing capacity: Since the hinge allows the forearm to rotate and swing out first and then slide back and forth during the opening process, the stroke of the forearm increases, so the length N of the forearm can be designed to be shorter, which reduces the moment of force on the hinge and improves the load-bearing capacity of the hinge. This design enables the hinge to support heavier doors and windows more effectively.

[0023] 4. Increased opening angle and practicality: Since the hinge allows the forearm to rotate and swing out first and then slide back and forth during the opening process, the distance L between the window frame (or door frame) and the window sash (or door sash) is larger after the hinge is opened, allowing the doors and windows to maintain a larger opening angle. This not only facilitates ventilation and cleaning of the glass outside the room, but also enhances the overall aesthetics and practicality of the doors and windows. In addition, the shortened forearm design allows the hinge to occupy less space during installation, which is particularly beneficial for installation environments with limited space, and also makes the design of doors and windows more flexible and diversified.

[0024] 5. Double fulcrum design: By forming a reinforced limit groove on the reinforced pressure edge, the indoor end of the forearm can slide and swing in it, forming an auxiliary fulcrum. This double fulcrum design not only increases the connection strength between the forearm and the base, but also significantly enhances the load-bearing capacity of the hinge. Furthermore, the double fulcrum design effectively disperses the force and reduces the pressure of a single fulcrum, thereby improving the overall durability and stability of the hinge. This design makes the hinge more wear-resistant in long-term use and extends its service life. In addition, the reinforced limit groove not only serves as a fulcrum, but also provides a limit function, ensuring the precise control and stability of the forearm during movement, reducing deviation and possible damage during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model after being unfolded;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model after folding;

[0028] Figure 3 It is an exploded schematic diagram of the utility model;

[0029] Figure 4 is a structural diagram of an active connection structure;

[0030] Figure 5 It is a top view of the utility model after being unfolded. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figures 1 to 5A door and window hinge with strong load-bearing capacity and smooth movement is shown, comprising a base 1, a front arm 2, a support arm 3 and a rear arm 4. In fact, the base 1, the front arm 2, the support arm 3 and the rear arm 4 together form an efficient four-bar linkage. Specifically, a movable connection structure is provided between one end of the front arm 2 and the base 1, the other end of the front arm 2 is rotatably connected to the support arm 3, one end of the rear arm 4 is rotatably connected to the support arm 3, and the other end of the rear arm 4 is rotatably connected to the base 1.

[0033] The movable connection structure includes a track guide hole 11 arranged on the base 1 , and a rotating shaft 21 and a positioning column 22 fixed on the forearm 2 .

[0034] The track guide hole 11 is a hole on the base 1, which includes two main parts: a sliding track hole 111 and a rotating track hole 112. The sliding track hole 111 extends along the length direction of the base 1, providing a straight sliding path. The rotating track hole 112 is arranged at the front end of the sliding track hole 111 and deflected toward the inner side of the room, forming a path that allows the forearm 2 to rotate inward and outward.

[0035] The rotating shaft 21 and the positioning column 22 are two key components fixed on the forearm 2 , and they can cooperate with the sliding track hole 111 and the rotating track hole 112 in the track guide hole 11 .

[0036] During the opening of the door or window, when the rotating shaft 21 and the positioning column 22 are both located in the sliding track hole 111, the movement of the forearm 2 is restricted and can only slide forward and backward along the length direction of the base 1. This design ensures the stable translation movement of the door or window after it is opened to a certain angle, and reduces friction and wear during the movement.

[0037] When the rotating shaft 21 is located in the sliding track hole 111 and the positioning column 22 is located in the rotating track hole 112, the movement mode of the front arm 2 changes, and it can not only slide forward and backward, but also rotate inward and outward. This design allows the door and window to be flexibly swung out at the initial opening stage, thereby reducing the resistance during opening and improving the stability of opening.

[0038] This conversion of movement not only improves the operating performance of doors and windows, but also enhances the durability and stability of the hinges.

[0039] The process of opening doors and windows is as follows:

[0040] like Figures 1 to 5 As shown, when the door or window is in a closed state, the rotating shaft 21 is located in the sliding track hole 111 , and the positioning column 22 is located in the rotating track hole 112 .

[0041] When the user pushes the door or window sash outward, the positioning column 22 starts to move toward the outside of the room along the rotation track hole 112, and the rotating shaft 21 retreats in the sliding track hole 111. This movement causes the forearm 2 to swing outward, so that the door or window is gradually opened from the closed state.

[0042] When the front arm 2 swings out to a certain angle, the positioning column 22 and the rotating shaft 21 enter the sliding track hole 111, and the movement mode of the front arm 2 changes. Since the positioning column 22 and the rotating shaft 21 are both located in the sliding track hole 111, when the door or window sash continues to be pushed outward, the front arm 2 can only move in the forward and backward direction along the sliding track hole 111, and can no longer rotate. This design reduces the variables in the translation process, thereby reducing wear and tear and increasing the service life of the hinge.

[0043] In addition, since the hinge allows the forearm 2 to rotate and swing out first and then slide back and forth during the opening process, the stroke of the forearm 2 is relatively long, which allows the length N of the forearm 2 to be designed to be shorter. The shortening of the forearm 2 reduces the moment of force on the hinge, thereby increasing the bearing capacity of the hinge. At the same time, after the hinge is opened, the distance L between the window frame (or door frame) and the window sash (or door sash) is larger, that is, the door and window can maintain a larger opening angle after opening, which is not only convenient for ventilation, but also convenient for cleaning the glass on the outside of the room, and also enhances the overall aesthetics and practicality of the door and window.

[0044] More specifically, if Figures 1 to 5 As shown, the sliding track hole 111 is designed as a strip hole, which provides a straight sliding path and ensures the stable translational movement of the door and window after opening to a certain angle. The rotation track hole 112 is designed as a strip hole that gradually tilts from back to front toward the inner side of the room, or an arc hole that gradually extends from back to front toward the inner side of the room. This design allows the forearm 2 to be flexibly swung out at the initial stage of opening, thereby reducing the resistance during opening and improving the stability of opening. The special shape of the rotation track hole 112 enables the door and window to achieve a complex and precise motion trajectory during the opening process.

[0045] More specifically, a rotatable rigid protective cover 211 is sleeved on the rotating shaft 21. The main function of the rigid protective cover 211 is to reduce the direct contact between the rotating shaft 21 and the sliding track hole 111. Through this design, the rigid protective cover 211 can effectively bear and disperse the friction generated by the rotating shaft 21 during the movement, thereby significantly reducing the friction coefficient between the two. In this way, the movement of the rotating shaft 21 in the sliding track hole 111 will be smoother, reducing the energy loss caused by friction. In addition, the rigid protective cover 211 can also effectively reduce the wear between the rotating shaft 21 and the sliding track hole 111, extending their service life.

[0046] The rigid protective sleeve 211 is preferably a steel sleeve.

[0047] Furthermore, the diameters of the rigid protective cover 211 and the positioning column 22 are matched with the widths of the sliding track hole 111 and the rotating track hole 112. This means that the diameters of the rigid protective cover 211 and the positioning column 22 are equal to or slightly smaller than the widths of the sliding track hole 111 and the rotating track hole 112. This size matching ensures the stability and accuracy of the forearm 2 during movement, while also reducing shaking, friction and wear.

[0048] More specifically, the base 1 is provided with a reinforcing plate 12 located at the track guide hole 11, and this design significantly enhances the structural strength of the base 1 in the key stress-bearing area. Of course, the track guide hole 11 penetrates the reinforcing plate 12 from bottom to top.

[0049] Furthermore, the reinforcing plate 12 not only provides additional structural support, but also has a reinforcing edge 121 on the indoor side thereof. The reinforcing edge 121 first extends upward and then extends toward the outdoor side to form a reinforcing limit groove 1211. The indoor end of the forearm 2 can be inserted into the reinforcing limit groove 1211 and slide and swing therein.

[0050] This design not only increases the connection strength between the forearm 2 and the base 1, but also adds an auxiliary fulcrum in addition to the main fulcrum of the rotating shaft 21. This auxiliary fulcrum significantly enhances the bearing capacity of the hinge by strengthening the cooperation between the limit groove 1211 and the inner end of the forearm 2. This double fulcrum design effectively disperses the force and reduces the pressure of a single fulcrum, thereby improving the overall durability and stability of the hinge.

[0051] In addition, the design of strengthening the limit groove 1211 also ensures the guidance and restriction of the forearm 2 during the movement, reduces unnecessary swinging and deviation, and further improves the smoothness and accuracy of opening and closing the door and window. This structural reinforcement measure not only improves the mechanical performance of the hinge, but also enhances the overall operating performance and service life of the door and window.

[0052] In the door and window hinge design of this embodiment, the positioning accuracy and operational stability of the hinge are further enhanced by introducing the rear limiting column 14 and the front limiting column 15, and the first limiting notch 23 and the second limiting notch 24 that cooperate therewith.

[0053] Matching of the rear limit post 14 and the first limit notch 23: The rear limit post 14 provided on the base 1 is located at the rear side of the sliding track hole 111, and the end of the front arm 2 is provided with a first limit notch 23 matching therewith. When the door or window is fully opened, the rear limit post 14 will closely match the first limit notch 23 to ensure the accurate limit of the front arm 2 at the opening position, and prevent over-opening or instability.

[0054] The front limiting column 15 cooperates with the second limiting notch 24: The base 1 is also provided with a front limiting column 15 located in front of the sliding track hole 111, and the side of the front arm 2 is provided with a second limiting notch 24 abutting against it. This design works when the door and window are closed, and the cooperation between the front limiting column 15 and the second limiting notch 24 ensures the precise position control of the front arm 2 during the closing process, preventing the situation of over-closing or under-closing.

[0055] More specifically, the door and window hinge further includes a reinforcing arm 5 to improve the overall stability and load-bearing capacity of the hinge. One end of the reinforcing arm 5 is rotatably connected to the middle of the rear arm 4, and the other end of the reinforcing arm 5 is rotatably connected to a slider 51, which is slidably connected to the base 1 along the length direction of the base 1. The presence of the reinforcing arm 5 not only improves the load-bearing capacity of the hinge, but also enhances its stability when subjected to external impact and pressure, thereby extending the service life of the hinge.

[0056] like Figures 1 to 5 As shown, the front end of the support arm 3 is fixedly connected with an entry plate 31, the front end of the entry plate 31 extends out of the support arm 3, and is provided with an entry guide opening 311. The entry guide opening 311 is designed as an arc-shaped opening, and this shape can cooperate with the guide roller 13 set at the front end of the base 1.

[0057] When the hinge is closed, under the guidance of the rotation track hole 112, the front arm 2 can smoothly rotate toward the inner side of the room to fold in the later stage of closing. In addition, the cooperation between the entry guide port 311 and the guide roller 13 also plays a guiding role at this time, ensuring the smooth entry of the support arm 3. In addition, the arc design of the entry guide port 311 and the rolling cooperation of the guide roller 13 reduce friction and impact, making the support arm 3 smoother when entering the position, reducing unnecessary mechanical stress and wear. This design not only solves the top angle and abnormal noise problems that may occur when conventional hinges are in place, but also improves the smoothness and quietness of the closing of doors and windows.

Claims

1. A door and window hinge with strong load-bearing capacity and smooth movement, characterized by: The invention comprises a base (1), a front arm (2), a support arm (3) and a rear arm (4); a movable connection structure is provided between one end of the front arm (2) and the base (1); the other end of the front arm (2) is rotatably connected to the support arm (3); one end of the rear arm (4) is rotatably connected to the support arm (3); the other end of the rear arm (4) is rotatably connected to the base (1); the movable connection structure comprises a track guide hole (11) provided on the base (1); and a rotating shaft (21) and a positioning column (22) provided on the front arm (2); the track guide hole (11) comprises a sliding track hole (111) extending along the length direction of the base (1); and a rotating track hole (112) provided at the front end of the sliding track hole (111) and deflected toward the indoor side; and the rotating shaft (21) and the positioning column (22) can both cooperate with the sliding track hole (111) and the rotating track hole (112); When the rotating shaft (21) and the positioning column (22) are both located in the sliding track hole (111), the forearm (2) can only slide forward and backward; when the rotating shaft (21) is located in the sliding track hole (111) and the positioning column (22) is located in the rotating track hole (112), the forearm (2) can rotate inward and outward.

2. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The sliding track hole (111) is a strip-shaped hole, and the rotating track hole (112) is a strip-shaped hole inclined from the back to the front inside the room or an arc-shaped hole extending toward the inside of the room.

3. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The rotating shaft (21) is sleeved with a rotatable rigid protective sleeve (211).

4. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 3, characterized in that: The diameters of the rigid protective sleeve (211) and the positioning column (22) are matched with the widths of the sliding track hole (111) and the rotating track hole (112).

5. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The base (1) is provided with a reinforcing plate (12) located at the track guide hole (11), and the track guide hole (11) passes through the reinforcing plate (12) from bottom to top.

6. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 5, characterized in that: The indoor side of the reinforcing plate (12) is provided with a reinforcing pressing edge (121), and the reinforcing pressing edge (121) first extends upward and then extends toward the outdoor side to form a reinforcing limiting groove (1211), and the indoor end of the forearm (2) is inserted into the reinforcing limiting groove (1211) and can slide and swing therein.

7. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The base (1) is provided with a rear limit column (14) located at the rear side of the sliding track hole (111), and the end of the front arm (2) is provided with a first limit notch (23) capable of abutting and cooperating with the rear limit column (14).

8. The door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The base (1) is provided with a front limiting column (15) located in front of the sliding track hole (111), and the side of the forearm (2) is provided with a second limiting notch (24) capable of abutting and cooperating with the front limiting column (15).

9. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The door and window hinge further comprises a reinforcing arm (5), one end of the reinforcing arm (5) being rotatably connected to the middle part of the rear arm (4), the other end of the reinforcing arm (5) being rotatably connected to a slider (51), and the slider (51) being slidably connected to the base (1) along the length direction of the base (1).

10. A door and window hinge with strong load-bearing capacity and smooth movement according to claim 1, characterized in that: The front end of the support arm (3) is fixedly connected to an entry plate (31), the front end of the entry plate (31) extends out of the support arm (3) and is provided with an entry guide opening (311), the front end of the base (1) is provided with a guide roller (13), and the entry guide opening (311) is an arc-shaped opening that can cooperate with the guide roller (13).

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