Friction damping angle limiter for doors and windows

Abstract

The utility model discloses a friction damping angle limiter for doors and windows. The friction damping angle limiter is characterized by comprising a base, a swing rod, a hinge shaft and a friction plate, one end of the swing rod is hinged to the base through a hinge shaft. A friction plate is arranged between the hinged end of the swing rod and the base, and a sliding sleeve is arranged at the end, away from the base, of the swing rod. The base is fixedly installed on the frame body, the sliding sleeve is inserted into a sliding groove of a door and window movable sash, damping is formed between the swing rod and the base by arranging the friction plate between the swing rod and the base, on one hand, stepless angle adjustment is achieved, and on the other hand, through damping, the problem that after door and window limiting is relieved, the door and window is not limited is solved. And violent impact between the door and window and the door frame is easily caused by overexertion or external wind blowing and the like. And through the structural optimization design of the base, the base and the door and window frame body can be more conveniently installed and fixed, and rapid disassembly and assembly are facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of door and window angle limiters, specifically relating to a friction damping angle limiter for doors and windows. Background Technology

[0002] Door and window limiters are compact, simple in structure, and widely used in daily life. They are generally made of stainless steel, making them corrosion-resistant and wear-resistant. Their main functions include: protecting people's safety: especially for families with children, limiting the degree of window opening protects children's safety; protecting windows: when a sudden strong wind blows, if the window is open without a limiter, it may suddenly open wide, easily breaking the glass, which is very dangerous. With a limiter installed, the window will not move, avoiding this danger; regulating indoor temperature: in winter when the weather is not too cold, if the heating in the house is too high and you want to lower the indoor temperature, the limiter can control the opening size of the window, acting as a free limiter. As the name suggests, door and window limiters are devices used to limit the degree to which doors and windows can be opened. Often, we don't need to open doors and windows fully to meet our needs; in this case, the limiter plays a significant role, using its special structure to achieve the desired degree of opening. However, traditional door and window angle limiters have multiple adjustment positions and can only be adjusted according to the gear setting, which is relatively unchanging; in addition, they lack damping, and after the door and window limiter is released, it is easy for the door and window to have a violent impact with the door frame due to excessive force or external wind. Summary of the Invention

[0003] The purpose of this invention is to provide a friction damping angle limiter for doors and windows, which solves the problem of limiting the opening angle of doors and windows.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0005] A friction damping angle limiter for doors and windows includes a base, a swing rod, a hinge shaft, and a friction plate; one end of the swing rod is hinged to the base via the hinge shaft; a friction plate is provided between the hinged end of the swing rod and the base; a sliding sleeve is provided at the end of the swing rod away from the base; the base is fixedly installed on the frame, and the sliding sleeve is inserted into the sliding groove of the movable sash of the door or window.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the hinge portion of the base extends symmetrically to both sides to form connecting portions, and each connecting portion bends downward to form a limiting lug; mounting holes are provided on the connecting portions.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the hinge shaft is a rivet; it includes a shaft portion and a cap-shaped head located at one end of the shaft portion, and the rivet rivets the swing arm to the base; the friction plate is sleeved on the shaft portion and is located on the upper and lower end faces of the swing arm respectively.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: a butterfly spring is provided between the cap-shaped head and the friction plate.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: a locking part is provided at one end of the swing arm away from the base 1, and the sliding sleeve is locked onto the locking part.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the hinge portion of the base extends symmetrically to both sides to form connecting portions, and each connecting portion has a limiting protrusion on one side facing outward; on the connecting portion, a set screw hole is provided above the limiting protrusion, the set screw hole is through to the side opposite to the location of the limiting protrusion, and a screw is installed thereon.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the set screw hole is inclined.

[0012] Based on the above solution and as a preferred embodiment of the above solution: the connecting part has an inclined surface on the side opposite to the limiting protrusion.

[0013] The outstanding and beneficial technical effects of this utility model compared with the prior art are as follows: by setting a friction plate between the swing rod and the base, a damping effect is formed between the swing rod and the base. On the one hand, stepless angle adjustment is achieved, and on the other hand, the damping solves the problem that after the door and window limit is released, the door and window may have a violent impact with the door frame due to excessive force or external wind. Through the optimized structural design of the base, it is easier to install and fix the base to the door and window frame, and it is convenient to quickly disassemble and assemble. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0015] Figure 2 This is a perspective view of the overall structure of this utility model from another angle;

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

[0017] Figure 4 This is a disassembled diagram of the overall structure of Example 2;

[0018] Figure 5 This is a three-dimensional view of the overall structure of Example 2;

[0019] Figure 6 This is the main view of the overall structure of Embodiment 2;

[0020] Figure 7 This is a bottom view of the overall structure of Embodiment 2;

[0021] Figure 8 This is a schematic diagram of the base and frame in the second embodiment. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the given embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0024] In the description of this application, the terms "first," "second," etc., 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 indicated. Example

[0025] See details Figure 1-3As shown, this application discloses a friction damping angle limiter for doors and windows, including a base 1, a swing rod 2, a hinge shaft 3, and a friction plate 4; wherein the hinge portion of the base 1 extends symmetrically to both sides to form connecting portions, and each connecting portion bends downward to form a limiting lug 13; a mounting hole 11 is provided on the connecting portion, and a self-tapping screw passes through the mounting hole 11 and is screwed into the frame body, and the limiting lug 13 can be precisely engaged in the slot on the frame body, thereby limiting the base 1 from shaking or rotating when subjected to external force. Preferably, this limiter is suitable for use on PVC doors and windows. One end of the swing arm 2 is hinged to the base 1 via a hinge shaft 3, thereby enabling the swing arm 2 to rotate around the hinge shaft 3. To ensure the swing arm 2 maintains the position of the movable sash of the door / window to a certain extent during rotation through damping, and to cushion the movable sash from strong winds or forceful closure, preventing damage from violent impacts, a friction plate 4 is preferably provided between the hinged end of the swing arm 2 and the base 1 in this embodiment. The friction between the friction plate 4 and the swing arm 2 and the base 1 provides damping during the rotation of the swing arm 2. Furthermore, a sliding sleeve 8 is provided at the end of the swing arm 2 away from the base 1. Specifically, a locking part 22 is provided at the end of the swing arm 2 away from the base 1, and the sliding sleeve 8 is locked onto the locking part 22. The sliding sleeve 8 is inserted from bottom to top into the groove at the bottom of the movable sash of the door / window. Preferably, the sliding sleeve 8 is made of nylon or POM material, allowing it to slide smoothly into the groove at the bottom of the movable sash of the door / window during the movement of the swing arm 2, preventing jamming. In this embodiment, the base 1 is preferably made of stainless steel by stamping.

[0026] Furthermore, to improve the installation reliability of the hinge shaft 3 and avoid damage caused by the hinge shaft falling off during use, the hinge shaft 3 is preferably a rivet in this embodiment. The friction plate 4 is sleeved on the shaft portion 31 and is located on the upper and lower end faces of the rocker arm 2. Of course, to compensate for the potential reduction in damping caused by wear of the friction plate 4 during use, a butterfly spring 9 is preferably provided between the cap-shaped head 32 and the friction plate 4 in this embodiment. Specifically, the hinge shaft 3 includes a shaft portion 31 and a cap-shaped head 32 located at one end of the shaft portion. The shaft portion 31 passes through the butterfly spring 9, the friction plate 4, the through hole 21 on the rocker arm 2, the friction plate 4, and the shaft hole 12 on the base 1. By applying external force to its lower end, it is forced to deform and expand, thus riveting the rocker arm 2 to the base 1. It should be noted that the tightness of the riveting is determined by selecting an optimal damping force after multiple tests, thereby determining the degree of deformation of the lower end of the shaft portion 31 under external force. Example

[0027] See details Figure 4-8As shown, the difference between this embodiment and Embodiment 1 is that the hinge portion of the base 1' extends symmetrically to both sides to form connecting portions, and each connecting portion has a limiting protrusion 15 on one side facing outward; on the connecting portion, a set screw hole 14 is provided above the limiting protrusion 15, the set screw hole 14 passes through the side opposite to the limiting protrusion 15, and a screw 7 is installed thereon. In order to facilitate the screw 7 to be screwed into the set screw hole 14 more smoothly, in this embodiment, the set screw hole 14 is preferably set at an angle. During installation, the screw 7 is pre-screwed into the set screw hole 14 from the higher end of the set screw hole 14, and then the limiting block 15 is embedded into the slot 201 of the aluminum alloy door and window frame 20. With the help of a tool, the screw 7 is driven to be screwed in obliquely downward, with the front end protruding from the set screw hole 14, pressing against or partially pressing into the aluminum alloy door and window frame 20, located on the groove wall 202 on the opposite side of the slot 201, thereby fixing the base 1' onto the aluminum alloy door and window frame 20.

[0028] Furthermore, in this embodiment, in order to facilitate the base 1' being pressed into the mounting groove of the door and window frame 20, it is preferable that the connecting part has an inclined surface 17 on the side away from the limiting protrusion 15, so that the base 1' presents a wedge-shaped structure, making it easier to be embedded into the mounting groove.

[0029] Furthermore, a groove 16 is formed on the upper end face of the shaft hole 12 on the base 1'. The friction plate 4 located on the lower end face of the rocker arm 2 is partially received in the groove 16. The depth of the groove 16 is less than the thickness of the friction plate 4. This reduces the height of the rocker arm 2 without affecting the damping, making it easier to install and use. The base 1' can be made of aluminum alloy or zinc alloy by casting or die casting.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A frictional damper angle limiter for doors and windows, characterized in that: It includes a base (1), a swing rod (2), a hinge shaft (3), and a friction plate (4); one end of the swing rod (2) is hinged to the base (1) through the hinge shaft (3); a friction plate (4) is provided between the hinge end of the swing rod (2) and the base (1), and a sliding sleeve (8) is provided on the end of the swing rod (2) away from the base (1); the base (1) is fixedly installed on the frame, and the sliding sleeve (8) is inserted into the sliding groove of the movable sash of the door and window.

2. The frictional damper angle limiter for doors and windows according to claim 1, characterized in that: The hinge portion of the base (1) extends symmetrically to both sides to form connecting portions, and each connecting portion bends downward to form a limiting lug (13); mounting holes (11) are provided on the connecting portions.

3. The frictional damper angle limiter for doors and windows according to claim 2, characterized in that: The hinge shaft (3) is a rivet; it includes a shaft portion (31) and a cap-shaped head (32) located at one end of the shaft portion. The rivet rivets the swing rod (2) to the base (1); the friction plate (4) is sleeved on the shaft portion (31) and is located on the upper and lower end faces of the swing rod (2).

4. The frictional damper angle limiter for doors and windows according to claim 3, characterized in that: A butterfly spring (9) is provided between the cap-shaped head (32) and the friction plate (4).

5. The frictional damper angle limiter for doors and windows according to claim 1, characterized in that: The swing arm (2) has a locking part (22) at one end away from the base (1), and the sliding sleeve (8) is locked onto the locking part (22).

6. The frictional damper angle limiter for doors and windows according to claim 1, characterized in that: The hinge portion of the base (1) extends symmetrically to both sides to form connecting portions. Each connecting portion has a limiting protrusion (15) on one side facing outward. On the connecting portion, a set screw hole (14) is provided above the limiting protrusion (15). The set screw hole (14) passes through the side away from the limiting protrusion (15) and is fitted with a screw (7).

7. The frictional damper angle limiter for doors and windows according to claim 6, characterized in that: The set screw hole (14) is set at an angle.

8. The frictional damper angle limiter for doors and windows according to claim 6, characterized in that: The connecting part has an inclined surface (17) on the side opposite to the limiting protrusion (15).

Images