Hidden type hinge

Abstract

The utility model discloses a hidden type hinge which comprises a frame fixing plate, a sash fixing rod, a long connecting rod and a positioning rod, the two ends of the long connecting rod and the two ends of the positioning rod are rotationally connected through rivets, and the frame fixing plate, the sash fixing rod, the long connecting rod and the positioning rod are combined to form a four-bar mechanism for opening and closing a sash and a window frame. One end of the frame fixing plate is provided with a wind bracing connecting rod, one end of the wind bracing connecting rod is connected through a rivet, the other end of the wind bracing connecting rod is provided with a sliding block connected through a rivet, and a limiting block used for clamping the sliding block is further arranged between the sliding block and the sash fixing rod. Through the combination of the sliding block and the limiting block, the window can be kept at a fixed position after being opened and cannot swing along with wind, and the overall size is small.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window hardware accessories, specifically to a concealed hinge. Background Technology

[0002] Currently, the concealed hinges for fire-resistant casement windows on the market are generally four-bar structures, lacking a positioning function. This causes the windows to easily sway in the wind. Therefore, most require the use of wind braces to prevent swaying. However, existing hinges and wind braces are two separate hardware components, resulting in poor concealment and an unattractive overall appearance when used together. Furthermore, installing wind braces can increase the overall width of the window, compromising its wind resistance. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a hidden hinge that can ensure that the window remains in a fixed position after it is opened by a combination of slider and limit block, and will not swing with the wind, with a small overall size.

[0004] To solve the aforementioned technical problems, this application adopts the following technical solution:

[0005] A concealed hinge includes a frame fixing plate, a sash fixing rod, a long connecting rod, and a positioning rod. Both ends of the long connecting rod and the positioning rod are rotatably connected by rivets. The frame fixing plate, sash fixing rod, long connecting rod, and positioning rod combine to form a four-bar linkage mechanism for opening and closing the window sash and window frame. One end of the frame fixing plate is provided with a wind brace connecting rod connected to the window frame by a rivet, and the other end of the wind brace connecting rod is provided with a slider connected to the window frame by a rivet. A limiting block for locking the slider is also provided between the slider and the sash fixing rod.

[0006] Preferably, the limiting block is provided with a plurality of internal hexagonal tapered set screws, and the limiting block is fixed to the window sash profile by the internal hexagonal tapered set screws.

[0007] Preferably, the slider is provided with a slot, the limiting block is provided with a locking block, and one end of the limiting block is inserted into the slot through the locking block for relative fixation.

[0008] Preferably, the slider has an adjustment groove, and one end of the slider has a hexagonal head screw that can be inserted into the adjustment groove. The width of the slider can be increased by pushing one end of the hexagonal head screw into the adjustment groove.

[0009] Preferably, the fan fixing rod is further provided with a fixing sleeve assembly.

[0010] Preferably, the fixing sleeve assembly includes a connecting shaft with one end on the positioning rod, a bushing sleeved on the connecting shaft, a fan fixing plate on one side of the bushing sleeve, and a detachable internal hexagonal flat-end screw on the top of the bushing sleeve.

[0011] Preferably, the bottom of the frame fixing plate is provided with at least two downward protruding clamping blocks.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This structure extends the existing frame fixing plate, and one end of the wind brace connecting rod is connected to the frame fixing plate with rivets to form a whole. Simultaneously, a slider is connected to the other end of the wind brace connecting rod with rivets, while the limiting block is directly fixed to the window sash profile. The limiting block can be fixed to an appropriate position on the sash profile as needed. When the window is opened to a certain position, the slider and the limiting block will lock together, thus keeping the window in a fixed position and preventing it from swaying in the wind. By designing the hinge and wind brace as a single unit, the problems of poor concealment and poor overall aesthetics during combined use can be effectively avoided. Furthermore, the installation of the wind brace does not affect the overall width, allowing the profile width to be reduced to a minimum of 400mm, resulting in a smaller overall volume. Attached Figure Description

[0014] Figure 1 This is a full sectional view of the present invention;

[0015] Figure 2 This is a schematic diagram showing the locking state of the limiting block and the slider in this utility model;

[0016] Figure 3 This is an isometric view of the overall structure of this utility model;

[0017] In the diagram: 1. Fan fixing rod; 2. Positioning rod; 3. Long connecting rod; 4. Frame fixing plate; 5. Socket hexagonal tapered set screw; 6. Limiting block; 7. Wind support connecting rod; 8. Socket hexagonal cylindrical tapered screw; 9. Slider; 10. Clamping block; 11. Connecting shaft; 12. Bushing; 13. Socket hexagonal flat end screw; 14. Fixing sleeve assembly; 15. Fan fixing plate; 16. Clamping block; 17. Clamping groove; 18. Adjustment groove. Detailed Implementation

[0018] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0020] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] like Figures 1-3 As shown, a concealed hinge includes a frame fixing plate 4, a sash fixing rod 1, a long connecting rod 3, and a positioning rod 2. Both ends of the long connecting rod 3 and the positioning rod 2 are rotatably connected by rivets. The frame fixing plate 4, the sash fixing rod 1, the long connecting rod 3, and the positioning rod 2 are combined to form a four-bar linkage mechanism for opening and closing the window sash and the window frame. One end of the frame fixing plate 4 is provided with a wind brace connecting rod 7 connected by a rivet at one end, and the other end of the wind brace connecting rod 7 is provided with a slider 9 connected by a rivet at the other end. A limiting block 6 for locking the slider 9 is also provided between the slider 9 and the sash fixing rod 1.

[0022] In actual assembly, the existing frame fixing plate 4 was lengthened, and one end of the wind brace connecting rod 7 was connected to the frame fixing plate 4 with rivets to form a whole. At the same time, a slider 9 was connected to the other end of the wind brace connecting rod 7 with rivets, and the limiting block 6 was directly fixed to the window sash profile. According to the requirements, the limiting block 6 can be fixed to an appropriate position on the sash profile. When the window is opened to a certain position, the slider 9 will lock with the limiting block 6, so that the window will remain in a fixed position and will not swing with the wind. By designing the hinge and wind brace as an integral part, the problems of poor concealment and poor overall aesthetics during combined use can be effectively avoided. At the same time, the installation of the wind brace will not affect the overall width, and the width of the profile can be reduced to a minimum of 400mm, resulting in a smaller overall volume.

[0023] A further improvement is that the limiting block 6 is provided with a plurality of internal hexagonal cone set screws 5, and the limiting block 6 is fixed to the window sash profile by the internal hexagonal cone set screws 5.

[0024] The limiting block 6 is fixed to the window sash profile by the internal hexagonal set screw 5, which provides better concealment and aesthetics during installation. Generally, two internal hexagonal set screws 5 are sufficient for positioning.

[0025] A further improvement is that the slider 9 is provided with a slot 17, the limiting block 6 is provided with a locking block 16, and one end of the limiting block 6 is inserted into the slot 17 through the locking block 16 for relative fixation.

[0026] When the slider 9 slides to the side of the limit block 6, the insertion of the locking block 16 into the slot 17 can effectively ensure that they are locked together, so that the window remains in a fixed position and will not swing with the wind, avoiding separation after being subjected to pressure. Furthermore, the combination of the locking block 16 and the slot 17 increases the wind resistance, making it stronger.

[0027] A further improvement is made in that the slider 9 is provided with an adjustment groove 18, and one end of the slider 9 is provided with an internal hexagonal head tapered screw 8 that is inserted into the adjustment groove 18. The width of the slider 9 can be increased by pushing one end of the internal hexagonal head tapered screw 8 into the adjustment groove 18.

[0028] By using the hexagonal head tapered screw 8 and the adjusting groove 18, the friction between the slider 9 and the window frame profile can be adjusted to prevent the window sash from being suddenly closed by strong winds.

[0029] A further improvement is made in that the fan fixing rod 1 is also provided with a fixing sleeve assembly 14; the fixing sleeve assembly 14 includes a connecting shaft 11 with one end provided on the positioning rod 2, a bushing 12 sleeved on the connecting shaft 11, a fan fixing plate 15 provided on one side of the bushing 12, and a detachable internal hexagonal flat-end screw 13 provided on the top of the bushing 12.

[0030] The window sash can be quickly assembled and disassembled by connecting the fixed sleeve assembly 14 to the window sash fixing rod 1. In actual use, the bushing 12 is fastened to one side of the window sash by screws on the sash fixing plate 15. This allows the window sash to be limited simply by fitting the bushing 12 onto the connecting shaft 11 when connected to the sash fixing rod 1. At the same time, it also makes the rotation adjustment of the window sash more flexible. During the assembly process, in order to avoid the window sash sagging or corner breakage caused by processing errors, the bushing 12 is also equipped with a hexagonal flat-end screw 13 at the top. The hexagonal flat-end screw 13 can be used to adjust the processing errors of the window sash and prevent the window sash from sagging or corner breakage.

[0031] A further improvement is that the bottom of the frame fixing plate 4 is provided with at least two downward protruding clamping blocks 10.

[0032] When connecting the frame fixing plate 4 to the window frame profile, the installation is carried out by the clamping block 10, which makes the operation simpler and more convenient, and the frame fixing plate 4 is easy to install and remove.

[0033] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A concealed hinge, comprising a frame fixing plate (4), a sash fixing rod (1), a long connecting rod (3), and a positioning rod (2), wherein the two ends of the long connecting rod (3) and the positioning rod (2) are rotatably connected by rivets, and the frame fixing plate (4), the sash fixing rod (1), the long connecting rod (3), and the positioning rod (2) combine to form a four-bar linkage mechanism for opening and closing the window sash and the window frame, characterized in that: One end of the frame fixing plate (4) is provided with a wind support connecting rod (7) connected by a rivet at one end, and the other end of the wind support connecting rod (7) is provided with a slider (9) connected by a rivet at the other end. A limiting block (6) for clamping the slider (9) is also provided between the slider (9) and the fan fixing rod (1).

2. The concealed hinge according to claim 1, characterized in that: The limiting block (6) is provided with a plurality of internal hexagonal tapered set screws (5), and the limiting block (6) is fixed to the window sash profile by the internal hexagonal tapered set screws (5).

3. A concealed hinge according to claim 1, characterized in that: The slider (9) is provided with a slot (17), and the limiting block (6) is provided with a locking block (16). One end of the limiting block (6) is inserted into the slot (17) through the locking block (16) and then fixed relative to each other.

4. A concealed hinge according to claim 3, characterized in that: The slider (9) is provided with an adjustment groove (18), and one end of the slider (9) is provided with an internal hexagonal head tapered screw (8) that is inserted into the adjustment groove (18). The width of the slider (9) can be increased by pushing one end of the internal hexagonal head tapered screw (8) into the adjustment groove (18).

5. A concealed hinge according to claim 1, characterized in that: The fan fixing rod (1) is also provided with a fixing sleeve assembly (14).

6. A concealed hinge according to claim 5, characterized in that: The fixed sleeve assembly (14) includes a connecting shaft (11) with one end on the positioning rod (2), a bushing (12) sleeved on the connecting shaft (11), a fan fixing plate (15) on one side of the bushing (12), and a detachable internal hexagonal flat-end screw (13) on the top of the bushing (12).

7. A concealed hinge according to claim 1, characterized in that: The bottom of the frame fixing plate (4) is provided with at least two downward protruding clamps (10).

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