Back-pulling four-bar linkage hinge
By adopting limit blocks, balls and springs in the rear pull-up four-link hinge, the problem of deformation of the support arm under wind pressure is solved, and a stronger resistance to wind pressure and a stable sash closure effect is achieved.
Patent Information
- Application Number
- CN202420019306.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-04
AI Technical Summary
The existing rear pull four-link hinge can easily cause the support arm to deform, upturn or even fall off under wind pressure, which cannot meet the load-bearing requirements of the window sash.
A hinge including a window frame fixing plate, a first support arm, a second support arm, a sliding support arm and a window sash fixing plate is designed. Through the structure of the limit block, the ball and the three-direction limit of the support arm is realized. Elastic support to prevent deformation and sagging.
Effectively resist wind pressure, ensure the stability and load-bearing capacity of the support arm, avoid rivets falling off and sash sagging, and improve the sash closure stability.
Smart Images
Figure CN222162304U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of window hinges, and particularly relates to a four-link hinge which closes a window sash by retracting a support arm backward. Background Art
[0002] The rear-pull four-link hinge usually uses two support arms and a sliding support arm to connect to the window sash fixing plate. The window sash fixing plate rotates backward and oppositely through the two support arms and is retracted to the window frame fixing plate, thereby realizing the opening and closing of the window sash. The existing support arms are usually connected to the window frame fixing plate with rivets. If there is wind pressure, the support arms will deform and warp upward. In severe cases, there will even be dangers such as rivet falling off and breaking, so it cannot meet the load-bearing requirements of the window sash. Utility Model Content
[0003] The utility model aims to provide a rear-pull four-link hinge to prevent the support arm from deforming and make the support arm bear the load reliably.
[0004] The rear-pull four-link hinge includes a window frame fixing plate, a first support arm, a second support arm, a sliding arm and a window sash fixing plate, one end of the first support arm and one end of the second support arm are both rotatably connected to the window frame fixing plate, the other end of the first support arm is rotatably connected to one end of the window sash fixing plate, the other end of the second support arm is rotatably connected to the middle part of the sliding arm, the second support arm is arranged between the first support arm and the sliding arm, one end of the sliding arm is slidably and rotatably connected to the window frame fixing plate, the other end of the sliding arm is rotatably connected to the middle part of the window sash fixing plate, the window frame fixing plate is provided with a limit block, and the limit block is limited to the first support arm and the second support arm along the height direction, width direction and length direction of the window frame fixing plate.
[0005] A limit block is installed between one end of the first support arm and one end of the second support arm, and the limit block is provided with a left avoidance groove, a right avoidance groove and a side baffle. The upper end surface of the limit block is provided with a left pressure plate and a right pressure plate, the left pressure plate is arranged at the top of the left avoidance groove, and the right pressure plate is arranged at the top of the right avoidance groove. One end of the first support arm is placed in a left avoidance position formed by the left avoidance groove, the left pressure plate and the side baffle, and one end of the second support arm is placed in a right avoidance position formed by the right avoidance groove, the right pressure plate and the side baffle.
[0006] One end of the window frame fixing plate is provided with a sliding groove along the length direction of the window frame fixing plate, and one end of the sliding support arm is installed in the sliding groove through a sliding block.
[0007] A first cushion block is provided at the outer end of the slide groove, and a roller that rolls along the width direction of the window frame fixing plate is provided on the upper end surface of the first cushion block.
[0008] A second cushion block is provided at the inner end of the slide groove, and a ball is provided on the upper end surface of the second cushion block. The ball is pressed against the second cushion block by a spring.
[0009] The beneficial effects of the utility model are as follows: the limit block limits the first support arm and the second support arm in three directions of height, width and length of the window frame fixing plate through the left avoidance position and the right avoidance position, thereby achieving a strong wind pressure resistance effect; the second pad block can elastically support the sliding arm when the sliding arm is folded into the window frame fixing plate through the ball and the spring, thereby preventing the window sash from sagging, and the elastic deformation of the sliding arm and the ball meets the assembly tolerance of the sliding arm, thereby avoiding the sliding arm from colliding with the window frame fixing plate when it is folded; the first pad block provides rolling support for the window sash through the roller when the window sash is closed, thereby preventing the window sash from falling to one end. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the expanded state of the rear-pull four-link hinge of the utility model;
[0011] Figure 2 for Figure 1 A three-dimensional view of the limit block shown. DETAILED DESCRIPTION
[0012] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0013] like Figure 1 , 2 As shown, the rear-pull four-link hinge includes a window frame fixing plate 1, a first support arm 2, a second support arm 3, a sliding arm 4 and a window sash fixing plate 5, one end of the first support arm 2 and one end of the second support arm 3 are both rotatably connected to the window frame fixing plate 1, a limit block 6 is installed between one end of the first support arm 2 and one end of the second support arm 3, the other end of the first support arm 2 is rotatably connected to one end of the window sash fixing plate 5, the other end of the second support arm 3 is rotatably connected to the middle of the sliding arm 4, the second support arm 3 is arranged between the first support arm 2 and the sliding arm 4, one end of the window frame fixing plate 1 is provided with a sliding groove 7 along the length direction of the window frame fixing plate 1, one end of the sliding arm 4 is installed in the sliding groove 7 through a slider 8, and the other end of the sliding arm 4 is rotatably connected to the middle of the window sash fixing plate 5. The above-mentioned rotational connection is preferably connected by rivets.
[0014] The limit block 6 is provided with a left avoidance groove 9, a right avoidance groove 10 and a side baffle 11, and the upper end surface of the limit block 6 is provided with a left pressure plate 12 and a right pressure plate 13, the left pressure plate 12 is arranged at the top of the left avoidance groove 9, and the right pressure plate 13 is arranged at the top of the right avoidance groove 10, one end of the first support arm 2 is placed at the left avoidance position A formed by the left avoidance groove 9, the left pressure plate 12 and the side baffle 11, and one end of the second support arm 3 is placed at the right avoidance position B formed by the right avoidance groove 10, the right pressure plate 13 and the side baffle 11. The left avoidance position A and the right avoidance position B limit the first support arm 2 and the second support arm 3 in three directions of the height direction, the width direction and the length direction of the window frame fixing plate 1, thereby achieving a strong wind pressure resistance effect.
[0015] A first pad 14 is provided at the outer end of the slide groove 7, and a roller 15 is provided on the upper end surface of the first pad 14 to roll along the width direction of the window frame fixing plate 1. The first pad 14 provides rolling support for the window sash through the roller 15 when the window sash is closed, preventing the window sash from falling to one end.
[0016] A second pad 16 is provided at the inner end of the slide groove 7, and a ball 17 is provided on the upper end surface of the second pad 16. The ball 17 is pressed against the second pad 16 by a spring. The second pad 16 can elastically support the sliding arm 4 when the sliding arm 4 is folded to the window frame fixing plate 1 through the ball 17 and the spring, thereby preventing the window sash from sagging. The elastic deformation of the sliding arm 4 and the ball 17 satisfies the assembly tolerance of the sliding arm 4, thereby preventing the sliding arm 4 from colliding with the window frame fixing plate 1 when folded.
Claims
1. The rear pull four-bar hinge is characterized by: The invention comprises a window frame fixing plate (1), a first supporting arm (2), a second supporting arm (3), a sliding arm (4) and a window sash fixing plate (5); one end of the first supporting arm (2) and one end of the second supporting arm (3) are both rotatably connected to the window frame fixing plate (1); the other end of the first supporting arm (2) is rotatably connected to one end of the window sash fixing plate (5); the other end of the second supporting arm (3) is rotatably connected to the middle of the sliding arm (4); the second supporting arm (3) is arranged between the first supporting arm (2) and the sliding arm (4); one end of the sliding arm (4) is slidably and rotatably connected to the window frame fixing plate (1); the other end of the sliding arm (4) is rotatably connected to the middle of the window sash fixing plate (5); the window frame fixing plate (1) is provided with a limit block (6); the limit block (6) is limited to the first supporting arm (2) and the second supporting arm (3) along the height direction, width direction and length direction of the window frame fixing plate (1).
2. The rear-pull four-link hinge according to claim 1, characterized in that: A limit block (6) is installed between one end of the first support arm (2) and one end of the second support arm (3), the limit block (6) is provided with a left avoidance groove (9), a right avoidance groove (10) and a side baffle (11), and the upper end surface of the limit block (6) is provided with a left pressure plate (12) and a right pressure plate (13), the left pressure plate (12) is arranged at the top of the left avoidance groove (9), and the right pressure plate (13) is arranged at the top of the right avoidance groove (10), one end of the first support arm (2) is placed at a left avoidance position (A) formed by the left avoidance groove (9), the left pressure plate (12) and the side baffle (11), and one end of the second support arm (3) is placed at a right avoidance position (B) formed by the right avoidance groove (10), the right pressure plate (13) and the side baffle (11).
3. The rear pull four-link hinge according to claim 1, characterized in that: One end of the window frame fixing plate (1) is provided with a slide groove (7) along the length direction of the window frame fixing plate (1), and one end of the sliding support arm (4) is installed in the slide groove (7) via a sliding block (8).
4. The rear-pull four-link hinge according to claim 3, characterized in that: A first cushion block (14) is provided at the outer end of the slide groove (7), and a roller (15) that rolls along the width direction of the window frame fixing plate (1) is provided on the upper end surface of the first cushion block (14).
5. The rear-pull four-link hinge according to claim 3, characterized in that: A second cushion block (16) is provided at the inner end of the slide groove (7), a ball (17) is provided on the upper end surface of the second cushion block (16), and the ball (17) is pressed against the second cushion block (16) by a spring.