Limiting structure of door and window hinge

Abstract

The utility model discloses a limiting structure of a door and window hinge, which comprises a window frame fixing plate arranged on a window frame; the window sash fixing plate is fixed on the window sash and is positioned on one side of the window frame fixing plate; the connecting rod assembly is connected between the window frame fixing plate and the window sash fixing plate so that the window sash fixing plate can rotate around the window frame fixing plate, and opening or closing of the window sash is achieved. The connecting rod assembly comprises a first connecting rod rotationally connected between the window sash fixing plate and the window frame fixing plate, a limiting piece is arranged on the side, facing the first connecting rod, of the window sash fixing plate, and a first abutting plane is formed on the limiting piece. The side, facing the window sash fixing plate, of the first connecting rod is provided with a limiting part, and a second abutting plane is formed on the limiting part. When the window sash fixing plate rotates by a preset angle relative to the window frame fixing plate, the first abutting plane and the second abutting plane are parallel to each other and abut against each other, and therefore the maximum opening angle of the window sash is limited in a face-to-face abutting limiting mode, stability is better, and the limiting effect is better.

Description

Technical Field

[0001] The utility model relates to the field of door and window equipment, in particular to a limiting structure of a door and window hinge. Background Art

[0002] In the field of doors and windows, hinges are a commonly used accessory that allows doors and windows to be opened and closed flexibly. Depending on the opening method or application scenario, there are different types of hinges, such as half-open, full-open, and horizontal push.

[0003] Hinges not only need to provide a secure connection for opening, but also provide a strong load-bearing function for the sash frame and ensure operational reliability to meet safety and reliability requirements. For safety reasons, doors and windows must have a set opening angle range to provide adequate ventilation and prevent accidental falls.

[0004] To ensure stability, reliability, and safety, current door and window hinges often rely on increased structural strength, larger contact surfaces, and the installation of position-limiting devices. However, increasing structural components and thickness not only increases the overall weight of the hinge, but also compromises its lifespan and safety due to the excessive number of components. Therefore, a simple and effective position-limiting structure for door and window hinges is urgently needed to address these technical issues. Utility Model Content

[0005] The utility model provides a limiting structure for a door and window hinge, which ensures the safety and stability of opening a window sash through a simple structural design.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] This technical solution provides a door and window hinge limiting structure, including:

[0008] Window frame fixing plate, installed on the window frame;

[0009] A window sash fixing plate, fixed to the window sash and located on one side of the window frame fixing plate;

[0010] a connecting rod assembly connected between the window frame fixing plate and the window sash fixing plate, so that the window sash fixing plate can rotate around the window frame fixing plate to open or close the window sash; the connecting rod assembly includes a first connecting rod, a first end of the first connecting rod is rotatably connected to the window sash fixing plate, and a second end of the first connecting rod is rotatably connected to the window frame fixing plate;

[0011] In which, the window sash fixing plate has a limit piece on the side facing the first connecting rod, and a first abutting plane is formed on the limit piece; the first connecting rod has a limit portion on the side facing the window sash fixing plate, and a second abutting plane is formed on the limit portion; when the window sash fixing plate is rotated by a preset angle relative to the window frame fixing plate, the first abutting plane and the second abutting plane are parallel to each other and abut against each other to limit the maximum opening angle of the window sash.

[0012] Preferably, the window sash fixing plate and the limiting member are integrally formed, and the first connecting rod and the limiting portion are integrally formed.

[0013] Preferably, it also includes:

[0014] a first connecting member, wherein the first end of the first connecting rod is rotatably connected to the window sash fixing plate through the first connecting member, and a center hole is formed in the first connecting member;

[0015] The second connecting member is inserted into the central hole of the first connecting member and is connected to the window sash.

[0016] Preferably, the central hole is a threaded hole, and the second connecting member is a screw;

[0017] Alternatively, the center hole is a through hole, and the second connecting member is a self-tapping screw.

[0018] Preferably, the connecting rod assembly further comprises:

[0019] a second connecting rod, one end of which is slidably connected to the window frame fixing plate and the other end of which is hinged to the window sash fixing plate;

[0020] The third connecting rod has one end hinged to the window frame fixing plate and the other end hinged to the middle portion of the second connecting rod.

[0021] Preferably, the connecting rod assembly further comprises:

[0022] a second connecting rod, one end of which is slidably connected to the window frame fixing plate and the other end of which is hinged to the window sash fixing plate;

[0023] The third connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle portion of the first connecting rod.

[0024] Preferably, the connecting rod assembly further comprises:

[0025] a second connecting rod, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate;

[0026] The third connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle portion of the first connecting rod.

[0027] Preferably, the limiting member is located on one end of the window sash fixing plate close to the window frame fixing plate.

[0028] Preferably, the limiting member is detachably connected to the window sash fixing plate.

[0029] Preferably, the window sash fixing plate is provided with a fixing hole, and the fixing hole is fixedly connected to the window sash via a fixing piece.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The first and second abutment planes are used to perform surface-to-surface abutment limiting to limit the maximum opening angle of the window sash. Compared with the traditional point-to-surface or point-to-point limiting method, it has better stability and better limiting effect.

[0032] (2) On the one hand, the first connecting member itself realizes the mutual hinge connection between the window sash fixing plate and the connecting rod assembly to form a stable hinge structure, so that the fixing position of the hinge and the window is close to the hinge side, which can provide the window sash with wind pressure resistance when resisting wind pressure. On the other hand, the mutual cooperation between the first connecting member and the second connecting member realizes the fixed connection between the window sash fixing plate and the window sash, thereby eliminating the need to add additional screw holes on the window sash fixing plate, avoiding the reduction in strength caused by reducing the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the overall structure of a door and window hinge limiting structure provided by an embodiment of the utility model;

[0034] Figure 2 A schematic diagram of the exploded structure of the limiting structure of the door and window hinge provided by an embodiment of the utility model;

[0035] Figure 3 This is a structural diagram of an embodiment of the present invention in which the limiting structure of a door and window hinge is applied to doors and windows.

[0036] In the accompanying drawings, each reference numeral represents:

[0037] 1. Window frame fixing plate; 11. Slider; 12. Fixing block; 13. End angle;

[0038] 2. Window sash fixing plate; 201. Connecting hole; 202. Abutment tip; 203. Fixing hole; 204. Fixing member; 205. Bend portion; 21. Limiting member; 210. First abutment plane;

[0039] 3. Connecting rod assembly; 31. First connecting rod; 32. Second connecting rod; 33. Third connecting rod; 311. Position limiting portion; 310. Second abutting plane;

[0040] 4. First connecting member; 41. Center hole; 5. Second connecting member;

[0041] 10. Window frame; 20. Window sash. DETAILED DESCRIPTION

[0042] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0043] like Figure 1 The figure shows a door and window hinge limiter structure provided by an embodiment of the present invention. The door and window hinge consists of a window frame fixing plate 1, a window sash fixing plate 2, and a connecting rod assembly 3, and is used to open and close the door and window. The limiter structure is formed on the door and window hinge and limits the maximum opening angle of the window sash by abutting against each other.

[0044] The following combination Figure 1-Figure 3 , respectively, the specific structural components of the door and window hinges and limit structures are explained in detail:

[0045] 1. Door and window hinges

[0046] In this embodiment, the door and window hinge includes a window frame fixing plate 1, a window sash fixing plate 2 and a connecting rod assembly 3. Figure 3 As shown, a window frame fixing plate 1 is mounted on a window frame 10. A window sash fixing plate 2 is fixed to a window sash 20 and is located on one side of the window frame fixing plate 1. A connecting rod assembly 3 is connected between the window frame fixing plate 1 and the window sash fixing plate 2 to enable the window sash fixing plate 2 to rotate around the window frame fixing plate 1 to open or close the window sash 20.

[0047] Specifically, the window frame fixing plate 1 is a generally rectangular plate structure. A slider 11 is slidably fitted on the window frame fixing plate 1 , and a fixing block 12 is also provided on the window frame fixing plate 1 ; the fixing block 12 and the slider 11 are spaced apart in the length direction of the window frame fixing plate 1 .

[0048] like Figure 2 As shown, the sash fixing plate 2 is located on one side of the window frame fixing plate 1 and is generally in a rectangular plate structure. A connecting hole 201 is provided on one end of the sash fixing plate 2 close to the window frame fixing plate 1 for hinged connection with the connecting rod assembly 3.

[0049] like Figure 2As shown, the connecting rod assembly 3 includes a first connecting rod 31, a second connecting rod 32 and a third connecting rod 33. The first end of the first connecting rod 31 (i.e. Figure 2 The left end of the first connecting rod 31 is rotatably connected to the window sash fixing plate 2 through the connecting hole 201, and the second end of the first connecting rod 31 (i.e. Figure 2 The right end of the second connecting rod 32 is rotatably connected to the window frame fixing plate 1. One end of the second connecting rod 32 is slidably connected to the window frame fixing plate 1 via the slider 11, and the other end is hingedly connected to the window sash fixing plate 2. One end of the third connecting rod 33 is hingedly connected to the window frame fixing plate 1, and the other end is hingedly connected to the middle portion of the second connecting rod 32. Thus, the connecting rod assembly 3, which is composed of three connecting rods, realizes the transmission connection between the window frame fixing plate 1 and the window sash fixing plate 2.

[0050] In another embodiment, the connecting rod assembly 3 includes a first connecting rod, a second connecting rod and a third connecting rod. The first end of the first connecting rod is rotatably connected to the window sash fixing plate, and the second end of the first connecting rod is rotatably connected to the window frame fixing plate. One end of the second connecting rod is slidably connected to the window frame fixing plate, and the other end is hinged to the window sash fixing plate. One end of the third connecting rod is slidably connected to the window frame fixing plate, and the other end is hinged to the middle part of the first connecting rod. In yet another embodiment, the connecting rod assembly 3 includes a first connecting rod, a second connecting rod and a third connecting rod. The first end of the first connecting rod is rotatably connected to the window sash fixing plate, and the second end of the first connecting rod is rotatably connected to the window frame fixing plate. One end of the second connecting rod is hinged to the window frame fixing plate, and the other end is hinged to the window sash fixing plate. One end of the third connecting rod is slidably connected to the window frame fixing plate, and the other end is hinged to the middle part of the first connecting rod.

[0051] In addition, in this embodiment, the door and window hinge also includes a first connecting member 4 and a second connecting member 5. The first connecting member 4 is inserted into the connecting hole 201 so that the first end of the first connecting rod 31 is rotatably connected to the window sash fixing plate through the first connecting member 4. In addition, the center of the first connecting member 4 has a center hole 41, and the second connecting member 5 is inserted into the center hole 41 of the first connecting member 4 and connected to the window sash. Thus, on the one hand, the first connecting member 4 itself realizes the mutual hinge connection between the window sash fixing plate 2 and the connecting rod assembly 3 to form a stable hinge structure, so that the fixing position of the hinge and the window is close to the hinge side, which can provide the window sash with wind pressure resistance when resisting wind pressure. On the other hand, the mutual cooperation between the first connecting member 4 and the second connecting member 5 realizes the fixed connection between the window sash fixing plate 2 and the window sash, thereby eliminating the need to add additional screw holes on the window sash fixing plate 2 and avoiding the reduction in strength caused by material reduction.

[0052] In this embodiment, preferably, a preset-shaped abutting tip 202 is formed on one end of the window sash fixing plate 2 close to the window frame fixing plate 1, and the abutting tip 202 is used to cooperate with the end angle 13 of the window frame fixing plate 1, thereby guiding and sealing the closing of the window sash, thereby improving the closing effect of the window sash.

[0053] In this embodiment, preferably, a fixing hole 203 is provided on the window sash fixing plate 2 , and the fixing hole 203 is fixedly connected to the window sash via a fixing member 204 , thereby further improving the installation stability of the window sash fixing plate 2 .

[0054] In this embodiment, preferably, a bent portion 205 is further provided on one end of the sash fixing plate 2 close to the window frame fixing plate 1. The bent portion 205 is hooked to the corner of the window sash 20 to limit the relative position of the sash fixing plate 2 and the window sash 20, thereby playing a role in installation positioning.

[0055] 2. Limiting structure

[0056] In this embodiment, the limiting structure is composed of two parts: a limiting member and a limiting portion.

[0057] like Figure 2 As shown, the sash fixing plate 2 has a stopper 21 on one side facing the first connecting rod 31 (in this embodiment, the bottom of the sash fixing plate 2). The stopper 21 is located on one end of the sash fixing plate 2 near the window frame fixing plate 1 and has a first abutting surface 210 formed thereon. Correspondingly, the first connecting rod 31 has a stopper 311 on one side facing the sash fixing plate 2 (in this embodiment, the top of the first connecting rod 31), and has a second abutting surface 310 formed thereon.

[0058] Therefore, when the sash fixing plate 2 rotates relative to the window frame fixing plate 1 by a preset angle (ie: Figure 1 As shown in the state), the first abutting plane 210 and the second abutting plane 310 are parallel to each other and abut against each other to limit the maximum opening angle of the window sash.

[0059] In the above embodiment, preferably, the sash fixing plate 2 and the limiting member 21 are integrally formed, and the first connecting rod 31 and the limiting portion 311 are integrally formed. This ensures the structural strength of the limiting member 21 and the limiting portion 311 and avoids the need for secondary assembly.

[0060] In another embodiment, the limiting member 21 is detachably connected to the window sash fixing plate 2. Thus, the limiting member 21 of different structural forms can be replaced as needed to meet different limiting requirements.

[0061] In summary, the embodiment of the present invention provides a door and window hinge limiting structure, which has the following beneficial effects:

[0062] (1) The first abutment plane 210 and the second abutment plane 310 are used to perform surface-to-surface abutment limiting to limit the maximum opening angle of the window sash. Compared with the traditional point-to-surface or point-to-point limiting method, it has better stability and better limiting effect.

[0063] (2) On the one hand, the first connecting member itself realizes the mutual hinge connection between the window sash fixing plate and the connecting rod assembly to form a stable hinge structure, so that the fixing position of the hinge and the window is close to the hinge side, which can provide the window sash with wind pressure resistance when resisting wind pressure. On the other hand, the mutual cooperation between the first connecting member and the second connecting member realizes the fixed connection between the window sash fixing plate and the window sash, thereby eliminating the need to add additional screw holes on the window sash fixing plate, avoiding the reduction in strength caused by reducing the material.

[0064] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0065] Furthermore, 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 technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A door and window hinge limiting structure, characterized in that: include: Window frame fixing plate, installed on the window frame; A window sash fixing plate, fixed to the window sash and located on one side of the window frame fixing plate; a connecting rod assembly connected between the window frame fixing plate and the window sash fixing plate, so that the window sash fixing plate can rotate around the window frame fixing plate to open or close the window sash; the connecting rod assembly includes a first connecting rod, a first end of the first connecting rod is rotatably connected to the window sash fixing plate, and a second end of the first connecting rod is rotatably connected to the window frame fixing plate; In which, the window sash fixing plate has a limit piece on the side facing the first connecting rod, and a first abutting plane is formed on the limit piece; the first connecting rod has a limit portion on the side facing the window sash fixing plate, and a second abutting plane is formed on the limit portion; when the window sash fixing plate is rotated by a preset angle relative to the window frame fixing plate, the first abutting plane and the second abutting plane are parallel to each other and abut against each other to limit the maximum opening angle of the window sash.

2. The limiting structure according to claim 1, characterized in that: The window sash fixing plate and the limiting member are integrally formed, and the first connecting rod and the limiting portion are integrally formed.

3. The limiting structure according to claim 1, characterized in that Also includes: a first connecting member, wherein the first end of the first connecting rod is rotatably connected to the window sash fixing plate through the first connecting member, and a center hole is formed in the first connecting member; The second connecting member is inserted into the central hole of the first connecting member and is connected to the window sash.

4. The limiting structure according to claim 3, wherein: The central hole is a threaded hole, and the second connecting member is a screw; Alternatively, the center hole is a through hole, and the second connecting member is a self-tapping screw.

5. The limiting structure according to claim 1, characterized in that The connecting rod assembly further comprises: a second connecting rod, one end of which is slidably connected to the window frame fixing plate and the other end of which is hinged to the window sash fixing plate; The third connecting rod has one end hinged to the window frame fixing plate and the other end hinged to the middle portion of the second connecting rod.

6. The limiting structure according to claim 1, characterized in that: The connecting rod assembly further comprises: a second connecting rod, one end of which is slidably connected to the window frame fixing plate and the other end of which is hinged to the window sash fixing plate; The third connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle portion of the first connecting rod.

7. The limiting structure according to claim 1, characterized in that: The connecting rod assembly further comprises: a second connecting rod, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate; The third connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle portion of the first connecting rod.

8. The limiting structure according to claim 1, wherein: The limiting member is located on one end of the window sash fixing plate close to the window frame fixing plate.

9. The limiting structure according to claim 1, characterized in that: The limiting member is detachably connected to the window sash fixing plate.

10. The limiting structure according to claim 1, characterized in that: The window sash fixing plate is provided with a fixing hole, and the fixing hole is fixedly connected to the window sash via a fixing piece.

Images