Hydraulic hinge for screen door

Abstract

This utility model discloses a hydraulic hinge for a screen window, including a shaft housing, a rotating device, a resetting device, and a leaf assembly. The shaft housing has a shaft cavity; the rotating device includes a rotating shaft, a compression spring, and a horizontal shaft. The rotating shaft includes a shaft portion extending from the top of the shaft housing and rotatably connected to it, and a piston portion disposed within the shaft cavity. The compression spring is sleeved on the shaft portion, and the piston portion has helical grooves on both sides. The horizontal shaft is horizontally disposed within the shaft cavity and fixedly connected to the inner wall of the shaft housing, and slides within the helical grooves. The resetting device includes a hydraulic cylinder disposed at the bottom of the shaft cavity, with an upwardly extending piston rod that abuts against the bottom surface of the piston portion. The leaf assembly includes a first leaf and a second leaf. The first leaf is C-shaped, and the second leaf is fixedly connected to the side of the shaft housing. The first leaf is used to connect to the window sash, and the second leaf is used to connect to the window frame. Therefore, while simplifying the structure, it achieves smooth rotation, automatic resetting, and efficient buffering, effectively improving the smoothness, durability, and functionality of the screen window's opening and closing.

Description

Technical Field

[0001] This utility model relates to the field of door control hardware, and in particular to a hydraulic hinge for a screen window. Background Technology

[0002] Traditional screen window hinges typically use simple mechanical structures to open and close window sashes, lacking buffering and automatic reset functions. This leads to problems such as collision noise and unstable window sash closure during use. Existing hinges mostly rely on metal springs or frictional resistance for limiting movement, which are prone to performance degradation due to elasticity decay or wear over long-term use. Furthermore, they cannot be adapted to the lightweight characteristics of screen windows, resulting in defects such as incomplete closure and inaccurate reset. In addition, the simple design of ordinary hinge leaf components makes it difficult to meet the flexible assembly requirements of screen windows and window frames, especially in scenarios requiring hydraulic buffering, where traditional structures cannot achieve slow closure and precise positioning. Although hydraulic hinges have been applied in the door and window industry, their complex structure and high cost, coupled with a lack of optimization for the thinness of screen windows, result in excessive size or insufficient adaptability. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a hydraulic hinge for screen windows, which integrates a rotating device, a resetting device, and a special leaf assembly. By simplifying the structure, it achieves smooth rotation, automatic resetting, and efficient buffering, effectively improving the smoothness, durability, and functionality of opening and closing screen windows.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A hydraulic hinge for a window screen, comprising

[0006] Shaft housing, with a shaft cavity inside;

[0007] A rotating device includes a rotating shaft, a compression spring, and a horizontal shaft. The rotating shaft includes a shaft portion extending out of the top of the shaft housing and rotatably connected to the shaft housing, and a piston portion disposed in the shaft cavity. The compression spring is sleeved on the shaft portion. The piston portion has helical grooves on both sides. The horizontal shaft is horizontally disposed in the shaft cavity and fixedly connected to the inner wall of the shaft housing. The horizontal shaft is slidably engaged with the helical grooves.

[0008] The reset device includes a hydraulic cylinder disposed at the bottom of the shaft cavity, wherein the hydraulic cylinder is provided with an upwardly extending piston rod that abuts against the bottom surface of the piston portion;

[0009] The leaf assembly includes a first leaf and a second leaf. The first leaf is C-shaped. One end of the first leaf is fixedly connected to the front end of the shaft portion, and the other end of the first leaf is rotatably connected to the bottom of the shaft housing. The second leaf is fixedly connected to the side of the shaft housing. The first leaf is used to connect with the window sash, and the second leaf is used to connect with the window frame.

[0010] According to an embodiment of this utility model, a hydraulic hinge for a screen window has at least the following beneficial effects: This hydraulic hinge for a screen window effectively improves the smoothness, durability, and functionality of opening and closing the screen window by optimizing the structural design of the rotating device, the resetting device, and the leaf assembly. Specifically, the rotating device adopts a cooperative structure of a rotating shaft, a compression spring, and a horizontal shaft. The spiral groove of the piston part slides with the horizontal shaft, and in conjunction with the hydraulic cylinder, it creates progressive damping when the window sash rotates, avoiding impact noise caused by rapid opening and closing. Simultaneously, the compression spring provides auxiliary resetting force, enhancing closing stability. The resetting device uses a combination of a hydraulic cylinder and a piston rod, combined with the deceleration effect of the compression spring, to provide a buffering effect when the window sash closes, achieving smooth and quiet closing and ensuring precise resetting, avoiding the problem of incomplete closure caused by mechanical wear in traditional hinges. The leaf assembly adopts a combination design of a C-shaped first leaf and a fixed second leaf, ensuring flexible connection between the window sash and the window frame while enhancing structural strength, adapting to different screen window installation requirements. With its compact overall structure and the synergistic effect of hydraulic and mechanical dual buffer mechanisms, the hinge's service life is significantly extended. It is especially suitable for lightweight window screens and solves the technical problems of traditional hinges, such as easy wear, unstable closure, and inaccurate reset. It has high practicality and market promotion value.

[0011] According to some embodiments of the present invention, the shaft is threadedly connected to the piston, and the shaft is provided with a first adjusting bolt hole for adjusting the installation distance of the compression spring.

[0012] The advantages are: the threaded connection between the shaft and the piston makes it easy to adjust the preload of the compression spring, adapt to the reset requirements of different window weights, and at the same time enhance the structural stability and extend the service life.

[0013] According to some embodiments of the present invention, the bottom of the shaft housing is provided with an adjustment cover, the adjustment cover is threadedly connected to the inner wall of the shaft housing, and the adjustment cover is provided with a second adjustment bolt hole for adjusting the installation position of the hydraulic cylinder.

[0014] The advantages are: the adjustment cover at the bottom of the shaft housing allows for fine adjustment of the hydraulic cylinder position, optimizes the damping effect, improves adaptability to different window weights, and simplifies operation.

[0015] According to some embodiments of the present invention, the top of the shaft housing is provided with a snap-fit ​​wheel, one end of the first leaf is provided with a first sleeve that snaps into the snap-fit ​​wheel, and the other end of the first leaf is provided with a second sleeve that is rotatably connected to the bottom of the shaft housing.

[0016] The advantages are: the top of the shaft housing is equipped with a retaining wheel and a sleeve to enhance the connection strength between the first leaf and the rotating shaft; the other end of the first leaf is equipped with a second sleeve that is rotatably connected to the bottom of the shaft housing, which can enhance the load-bearing capacity, reduce wear, and ensure smooth rotation of the window sash.

[0017] According to some embodiments of the present invention, the upper end of the first sleeve is provided with an upper cover, and the lower end of the second sleeve is provided with a lower cover, both the upper cover and the lower cover being provided with adjustment holes.

[0018] The advantages are that the first and second sleeves are equipped with upper and lower covers to protect the internal structure and prevent dust from entering, while also providing adjustment interfaces for easy maintenance.

[0019] According to some embodiments of the present invention, the second leaf is provided with a fixing sleeve that is fixedly sleeved with the shaft housing.

[0020] The advantage is that the second sash has a fixing sleeve to strengthen the connection stability with the shaft housing, prevent loosening, and ensure accurate window sash positioning.

[0021] According to some embodiments of the present invention, the top of the shaft housing is provided with ball bearings that are rotatably connected to the rotating shaft.

[0022] The benefits are: the ball bearings on the top of the shaft housing reduce shaft friction, making rotation smoother, and reducing noise and wear.

[0023] According to some embodiments of the present invention, the horizontal shaft is provided with a sliding sleeve that is slidably connected to the spiral groove.

[0024] The benefits are: the sliding sleeve on the horizontal axis improves the smoothness of the sliding fit of the spiral groove, reduces frictional loss, and extends the life of the hinge.

[0025] According to some embodiments of the present invention, the first leaf is provided with a plurality of first mounting holes arranged in sequence, and the first mounting holes are used to install window sashes.

[0026] The advantage is that the first panel has multiple mounting holes, which enhances the stability of the window sash installation and meets diverse installation needs.

[0027] According to some embodiments of the present invention, the second leaf is provided with a plurality of second mounting holes arranged in sequence, and the second mounting holes are used to install a window frame.

[0028] The advantage is that the second page has multiple mounting holes, providing flexible window frame installation options to accommodate different window sizes.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the decomposition process;

[0033] Figure 3 for Figure 2 Internal diagram of the central housing.

[0034] Reference numerals: Shaft housing 100, shaft cavity 110, rotating shaft 120, compression spring 130, horizontal shaft 140, shaft part 150, piston part 160, spiral groove 170, hydraulic cylinder 180, piston rod 190, first leaf blade 200, second leaf blade 210, first adjusting bolt hole 220, adjusting cover 230, second adjusting bolt hole 240, first sleeve 250, second sleeve 260, upper cover 270, lower cover 280, adjusting hole 290, fixing sleeve 300, ball bearing 310, sliding sleeve 320, first mounting hole 330, second mounting hole 340, snap-fit ​​wheel 350. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The following is for reference. Figures 1-3 A hydraulic hinge for a window screen is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0040] like Figures 1-3 As shown, a hydraulic hinge for a window screen includes a shaft housing 100, a rotating device, a resetting device, and a leaf assembly.

[0041] The shaft housing 100 has a shaft cavity 110 inside; the rotating device includes a rotating shaft 120, a compression spring 130, and a horizontal shaft 140. The rotating shaft 120 includes a shaft portion 150 extending out of the top of the shaft housing 100 and rotatably connected to the shaft housing 100, and a piston portion 160 disposed in the shaft cavity 110. The compression spring 130 is sleeved on the shaft portion 150. The piston portion 160 has helical grooves 170 on both sides. The horizontal shaft 140 is horizontally disposed in the shaft cavity 110 and fixedly connected to the inner wall of the shaft housing 100. The horizontal shaft 140 is slidably engaged with the helical grooves 170; the resetting device includes a shaft cavity 110, ... The hydraulic cylinder 180 at the bottom of cavity 110 has an upwardly extending piston rod 190 that abuts against the bottom surface of piston part 160. The leaf assembly includes a first leaf 200 and a second leaf 210. The first leaf 200 is C-shaped, with one end fixedly connected to the front end of shaft part 150 and the other end rotatably connected to the bottom of shaft housing 100. The second leaf 210 is fixedly connected to the side of shaft housing 100. The first leaf 200 is used to connect with the window sash, and the second leaf 210 is used to connect with the window frame. This utility model's hydraulic hinge for screen windows effectively improves the smoothness, durability, and functionality of screen window opening and closing by optimizing the structural design of the rotating device, reset device, and leaf assembly. Specifically, the rotating mechanism employs a cooperative structure of a rotating shaft 120, a compression spring 130, and a horizontal shaft 140. The spiral groove 170 of the piston 160 slides into the horizontal shaft 140, working in conjunction with the hydraulic cylinder 180 to create progressive damping during window sash rotation, preventing impact noise caused by rapid opening and closing. Simultaneously, the compression spring 130 provides auxiliary reset force, enhancing closing stability. The reset mechanism uses a combination of the hydraulic cylinder 180 and the piston rod 190, working in conjunction with the deceleration effect of the compression spring 130 to provide a buffering effect when the window sash closes, achieving smooth and quiet closure and ensuring precise reset, avoiding the problem of incomplete closure caused by mechanical wear in traditional hinges. The leaf assembly adopts a combination design of a C-shaped first leaf 200 and a fixed second leaf 210, ensuring flexible connection between the window sash and the window frame while enhancing structural strength, adapting to different screen installation requirements. With its compact overall structure and the synergistic effect of hydraulic and mechanical dual buffer mechanisms, the hinge's service life is significantly extended. It is especially suitable for lightweight window screens and solves the technical problems of traditional hinges, such as easy wear, unstable closure, and inaccurate reset. It has high practicality and market promotion value.

[0042] like Figure 3As shown, the shaft portion 150 is threadedly connected to the piston portion 160. The shaft portion 150 has a first adjusting bolt hole 220 for adjusting the installation distance of the compression spring 130. The threaded connection between the shaft portion 150 and the piston portion 160 facilitates the adjustment of the preload of the compression spring 130, adapting to the reset requirements of different window weights, while also enhancing structural stability and extending service life. Furthermore, the bottom of the shaft housing 100 has an adjusting cover 230, which is threadedly connected to the inner wall of the shaft housing 100. The adjusting cover 230 has a second adjusting bolt hole 240 for adjusting the installation position of the hydraulic cylinder 180. The adjusting cover 230 at the bottom of the shaft housing 100 allows for fine-tuning of the position of the hydraulic cylinder 180, optimizing the damping effect, improving adaptability to different window weights, and simplifying operation.

[0043] like Figure 1 and Figure 2 As shown, the top of the shaft housing 100 is provided with a locking wheel 350. One end of the first leaf 200 is provided with a first sleeve 250 that engages with the locking wheel 350, and the other end of the first leaf 200 is provided with a second sleeve 260 that is rotatably connected to the bottom of the shaft housing 100. The locking wheel 350 and sleeve at the top of the shaft housing 100 enhance the connection strength between the first leaf 200 and the rotating shaft 120. The second sleeve 260 at the other end of the first leaf 200 that is rotatably connected to the bottom of the shaft housing 100 can enhance the load-bearing capacity, reduce wear, and ensure smooth rotation of the window sash. In addition, the upper end of the first sleeve 250 is provided with an upper cover 270, and the lower end of the second sleeve 260 is provided with a lower cover 280. Both the upper cover 270 and the lower cover 280 are provided with adjustment holes 290. The first sleeve 250 and the second sleeve 260 are equipped with an upper cover 270 and a lower cover 280, respectively, to protect the internal structure and prevent dust intrusion, while also providing an adjustment interface for easy maintenance. Furthermore, the second leaf 210 is equipped with a fixing sleeve 300 that connects to the fixing sleeve 300 of the shaft housing 100. The fixing sleeve 300 on the second leaf 210 enhances the connection stability with the shaft housing 100, preventing loosening and ensuring accurate window sash positioning.

[0044] It should be noted that, as Figure 3 As shown, the top of the shaft housing 100 is provided with ball bearings 310 that are rotatably connected to the rotating shaft 120. The ball bearings 310 on the top of the shaft housing 100 reduce friction on the rotating shaft 120, making rotation smoother and reducing noise and wear. Furthermore, the horizontal shaft 140 is provided with a sliding sleeve 320 that is slidably connected to the spiral groove 170. The sliding sleeve 320 on the horizontal shaft 140 improves the smoothness of the sliding fit of the spiral groove 170, reduces frictional loss, and extends the hinge's lifespan.

[0045] It is worth mentioning that, such as Figure 1 and Figure 2As shown, the first page 200 has multiple first mounting holes 330 arranged in sequence for mounting the window sash. The multiple mounting holes on the first page 200 enhance the stability of the window sash installation and meet diverse installation needs. Correspondingly, the second page 210 has multiple second mounting holes 340 arranged in sequence for mounting the window frame. The multiple mounting holes on the second page 210 provide flexible window frame installation options to adapt to different window sizes.

[0046] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A screen door hydraulic hinge, comprising: include: Shaft housing (100), with a shaft cavity (110) inside. The rotating device includes a rotating shaft (120), a compression spring (130), and a horizontal shaft (140). The rotating shaft (120) includes a shaft portion (150) extending out of the top of the shaft housing (100) and rotatably connected to the shaft housing (100), and a piston portion (160) disposed in the shaft cavity (110). The compression spring (130) is sleeved on the shaft portion (150). The piston portion (160) has helical grooves (170) on both sides. The horizontal shaft (140) is horizontally disposed in the shaft cavity (110) and fixedly connected to the inner wall of the shaft housing (100). The horizontal shaft (140) is slidably engaged with the helical grooves (170). The reset device includes a hydraulic cylinder (180) disposed at the bottom of the shaft cavity (110), wherein the hydraulic cylinder (180) is provided with an upwardly extending piston rod (190) that abuts against the bottom surface of the piston part (160); The leaf assembly includes a first leaf (200) and a second leaf (210). The first leaf (200) is C-shaped. One end of the first leaf (200) is fixedly connected to the front end of the shaft (150), and the other end of the first leaf (200) is rotatably connected to the bottom of the shaft housing (100). The second leaf (210) is fixedly connected to the side of the shaft housing (100). The first leaf (200) is used to connect with the window sash, and the second leaf (210) is used to connect with the window frame.

2. The hydraulic screen door hinge of claim 1, wherein, The shaft (150) is threadedly connected to the piston (160), and the shaft (150) is provided with a first adjusting bolt hole (220) for adjusting the installation distance of the compression spring (130).

3. The hydraulic screen door hinge of claim 1, wherein: The bottom of the shaft housing (100) is provided with an adjustment cover (230), which is threaded to the inner wall of the shaft housing (100). The adjustment cover (230) is provided with a second adjustment bolt hole (240) for adjusting the installation position of the hydraulic cylinder (180).

4. The hydraulic screen door hinge of claim 1, wherein: The top of the shaft housing (100) is provided with a snap-fit ​​wheel (350), one end of the first leaf (200) is provided with a first sleeve (250) that snaps into the snap-fit ​​wheel (350), and the other end of the first leaf (200) is provided with a second sleeve (260) that is rotatably connected to the bottom of the shaft housing (100).

5. The hydraulic screen door hinge of claim 4, wherein, The upper end of the first sleeve (250) is provided with an upper cover (270), and the lower end of the second sleeve (260) is provided with a lower cover (280). Both the upper cover (270) and the lower cover (280) are provided with adjustment holes (290).

6. The hydraulic screen door hinge of claim 1, wherein: The second leaf (210) is provided with a fixing sleeve (300) that is fixedly sleeved (300) to the shaft housing (100).

7. The hydraulic screen door hinge of claim 1, wherein: The top of the shaft housing (100) is provided with ball bearings (310) that are rotatably connected to the rotating shaft (120).

8. The hydraulic screen door hinge of claim 1, wherein: The horizontal shaft (140) is provided with a sliding sleeve (320) that is slidably connected to the spiral groove (170).

9. The hydraulic screen door hinge of claim 1, wherein: The first leaf (200) is provided with a plurality of first mounting holes (330) arranged in sequence, and the first mounting holes (330) are used to install window sashes.

10. The hydraulic screen door hinge of claim 1, wherein: The second leaf (210) is provided with a plurality of second mounting holes (340) arranged in sequence, and the second mounting holes (340) are used for mounting a window frame.

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