A dual-drive synchronous lifting window
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-11
AI Technical Summary
[0008]本实用新型的目的在于提供双传动同步升降窗，旨在解决现有技术中的安全隐患较大，升降不同步，安装效率较低，维护效率低的技术问题
[0018]本实用新型实施例提供的双传动同步升降窗中的上述一个或多个技术方案至少具有如下技术效果之一：
Smart Images
Figure CN224621388U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building door and window technology, and in particular relates to a dual-drive synchronous lifting window. Background Technology
[0002] Retractable windows are widely used in the construction industry due to their advantages such as large ventilation area and small space occupation. However, existing retractable windows have many inconveniences during installation, the main shortcomings of which are as follows:
[0003] 1. Existing lifting windows use a single transmission path (such as a single-sided chain or gear), which results in the single-sided chain bearing too much load. Once it breaks or wears out, it can easily cause the window to jam or even fall, posing a significant safety hazard.
[0004] 2. Existing lifting window systems using dual motors are costly and complex to control, and are prone to asynchronous lifting due to differences in motors;
[0005] 3. Existing lift window transmission components (such as sprockets and chains) lack a dedicated positioning structure for the window frame. During installation, repeated manual measurements and adjustments are required to ensure transmission synchronization. For example, the installation of the sprocket in a single-drive lift window requires multiple calibrations of the axis parallelism, with the positioning step alone taking more than 30 minutes, resulting in low installation efficiency.
[0006] 4. The transmission mechanism (motor, worm gear, worm wheel, optical shaft) is welded to the window frame, making disassembly and assembly inconvenient. When replacing the transmission motor, chain, or other components later, it is necessary to damage the window frame or the lower fixed frame, resulting in long disassembly time and low maintenance efficiency.
[0007] 5. The existing lifting window transmission components use a gear structure for meshing and positioning. The gear structure is prone to tooth breakage, making positioning unreliable and easily causing the movable window to fall due to its own weight. Utility Model Content
[0008] The purpose of this utility model is to provide a dual-drive synchronous lifting window, which aims to solve the technical problems of significant safety hazards, asynchronous lifting, low installation efficiency, and low maintenance efficiency in the existing technology.
[0009] To achieve the above objectives, the present invention provides a dual-drive synchronous lifting window, comprising a window frame, a lower fixed frame, a movable window, a transmission mechanism, and an installation mechanism. The lower fixed frame is fixed to the bottom side of the window frame, and the movable window is movably disposed on the lower fixed frame and disposed inside the window frame. The transmission mechanism is fixed to both the window frame and the movable window. The installation mechanism is fixed to both the transmission mechanism and the window frame.
[0010] The transmission mechanism includes a reduction gearbox, a transmission motor, a worm gear, a worm wheel, a transmission optical shaft, a support plate, a first sprocket, a first chain, a first window sash mounting plate, a driven sprocket, a second sprocket, a second chain, and a second window sash mounting plate. The reduction gearbox is fixed to the window frame and the mounting mechanism, respectively. The transmission motor is fixed to the reduction gearbox. The worm gear is fixed to the transmission motor and meshes with the worm wheel. The transmission optical shaft is sequentially fixed through the worm wheel, the first sprocket, the second sprocket, and the support plate. The support plate is located at one end of the second sprocket and fixed to a second mounting plate, and the transmission optical shaft passes through the support plate. The first chain is sleeved on the outside of the first sprocket and the driven sprocket, respectively. The first window sash mounting plate is fixed to one end of the first chain and connected to the movable window, and the driven sprocket is fixed to the reduction gearbox. The second sprocket is fixed to the mounting mechanism, and the second chain is sleeved on the outside of the second sprocket. The second window sash mounting plate is fixed to one end of the second chain and connected to the movable window.
[0011] The mounting mechanism includes a first mounting plate and a second mounting plate. The first mounting plate is fixed to the window frame and the gearbox, respectively. The second mounting plate is fixed to the window frame, and the second sprocket is fixed to the second mounting plate.
[0012] As an optional solution of this utility model, the lower fixed frame is provided with a guide groove, and the movable window is movably installed in the guide groove.
[0013] As an optional embodiment of this utility model, the transmission mechanism further includes a first counterweight rod and a second counterweight rod, wherein the first counterweight rod is fixedly connected to one end of the first chain; and the second counterweight rod is fixedly connected to one end of the second chain.
[0014] As an optional solution of this utility model, the first sprocket and the second sprocket are arranged in parallel and opposite directions, and are arranged on the same horizontal plane.
[0015] As an optional solution of this utility model, the worm and the worm wheel are engaged and connected to form a self-locking structure.
[0016] As an optional solution of this utility model, the first mounting plate and the second mounting plate are arranged in parallel and opposite directions, and are arranged on the same horizontal plane; the first mounting plate and the second mounting plate are both fixedly connected to the window frame.
[0017] As an optional solution of this utility model, the first mounting plate is provided with a first pin hole, and there are multiple first pin holes; the second mounting plate is provided with a second pin hole, and there are multiple second pin holes.
[0018] The above-mentioned technical solutions of the dual-drive synchronous lifting window provided in this embodiment of the utility model have at least one of the following technical effects:
[0019] 1. The double-chain drive structure is adopted, with the first and second chains simultaneously supporting the movable window, which disperses the load and reduces safety hazards;
[0020] 2. A single-motor transmission structure is adopted, in which the transmission motor drives the worm gear, worm wheel, transmission shaft, first sprocket, and second sprocket to rotate, thereby driving the first chain and second chain to move up and down, which in turn drives the movable window to move up and down. The single-motor system is low-cost, simple to control, and effectively ensures synchronous lifting.
[0021] 3. The first and second mounting plates provide a precise positioning reference for the gearbox and the second sprocket, eliminating the need for repeated manual measurements, making installation quick and convenient, and improving installation efficiency;
[0022] 4. The installation mechanism adopts a pin-type installation. When disassembling, the transmission mechanism can be removed as a whole by simply removing the pin, without damaging the window frame. This makes disassembly and assembly quicker and more convenient, improving maintenance efficiency.
[0023] 5. The worm and worm wheel mesh to form a self-locking structure, which can fix the movable window in any position, making the positioning more reliable and effectively preventing the movable window from falling due to its own weight. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.
[0025] Figure 1 This is a front view of a dual-drive synchronous lifting window provided in an embodiment of the present utility model.
[0026] Figure 2 A perspective view of the back of the dual-drive synchronous lifting window provided in an embodiment of this utility model.
[0027] Figure 3 The side view of the dual-drive synchronous lifting window provided in this embodiment of the utility model, omitting the window frame.
[0028] Figure 4 A perspective view of the dual-drive synchronous lifting window provided in this embodiment of the utility model, omitting the window frame.
[0029] Figure 5 A perspective view of the transmission mechanism of the dual-drive synchronous lifting window provided in an embodiment of this utility model.
[0030] Figure 6A perspective view of the transmission mechanism of the dual-drive synchronous lifting window provided in an embodiment of this utility model.
[0031] Figure 7 for Figure 4 A magnified view of a portion of point A in the middle.
[0032] Figure 8 for Figure 4 A magnified view of a section at point B.
[0033] Figure 9 for Figure 6 A magnified view of a section at point C.
[0034] Figure 10 A front view of the worm gear and worm shaft meshing state of the dual-drive synchronous lifting window provided in an embodiment of this utility model.
[0035] Figure 11 A front view of the worm gear of the dual-drive synchronous lifting window provided in an embodiment of this utility model.
[0036] The following are the labeling elements in the figure:
[0037] 1. Window frame; 2. Lower fixed frame; 3. Movable window; 4. Transmission mechanism; 5. Mounting mechanism; λ, Lead angle; ρ, Equivalent friction angle;
[0038] 21. Guide groove;
[0039] 401. Gearbox; 402. Drive motor; 403. Worm gear; 404. Worm wheel; 405. Drive shaft; 406. First sprocket; 407. First chain; 408. First window sash mounting plate; 409. Driven sprocket; 410. Second sprocket; 411. Second chain; 412. Second window sash mounting plate; 413. First counterweight rod; 414. Second counterweight rod; 415. Support plate;
[0040] 51. First mounting plate; 52. Second mounting plate;
[0041] 511. First pin hole;
[0042] 521. Second pin hole. Detailed Implementation
[0043] The embodiments of this utility model are described in detail below. Examples of the 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 intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.
[0044] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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.
[0045] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0046] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0047] In one embodiment of this utility model, such as Figures 1-11 As shown, a dual-drive synchronous lifting window is provided, including a window frame 1, a lower fixed frame 2, a movable window 3, a transmission mechanism 4, and a mounting mechanism 5. The lower fixed frame 2 is fixed to the bottom side of the window frame 1, and the movable window 3 is movably disposed on the lower fixed frame 2 and located inside the window frame 1. The transmission mechanism 4 is fixed to both the window frame 1 and the movable window 3. The mounting mechanism 5 is fixed to both the transmission mechanism 4 and the window frame 1.
[0048] The transmission mechanism 4 includes a reduction gearbox 401, a transmission motor 402, a worm gear 403, a worm wheel 404, a transmission shaft 405, a support plate 415, a first sprocket 406, a first chain 407, a first window sash mounting plate 408, a driven sprocket 409, a second sprocket 410, a second chain 411, and a second window sash mounting plate 412. The reduction gearbox 401 is fixed to the window frame 1 and the mounting mechanism 5, respectively. The transmission motor 402 is fixed to the reduction gearbox 401. The worm gear 403 is fixed to the transmission motor 402 and meshes with the worm wheel 404. The transmission shaft 405 is sequentially fixed and passes through the worm wheel 404, the first sprocket 406, and the second sprocket 410. The first chain 407 is sleeved on the outside of the first sprocket 406 and the driven sprocket 409, respectively. The first window sash mounting plate 408 is fixed to one end of the first chain 407 and connected to the movable window 3. The driven sprocket 409 is fixed to the reduction gearbox 401. The second sprocket 410 is fixed to the mounting mechanism 5, and the second chain 411 is sleeved on the outside of the second sprocket 410. The support plate 415 is set at one end of the second sprocket 410 and fixed to the second mounting plate 52, and the transmission optical shaft 405 passes through the support plate 415; the second window sash hanging plate 412 is fixed to one end of the second chain 411 and connected to the movable window 3.
[0049] The mounting mechanism 5 includes a first mounting plate 51 and a second mounting plate 52. The first mounting plate 51 is fixed to the window frame 1 and the gearbox 401, respectively. The second mounting plate 52 is fixed to the window frame 1, and the second sprocket 410 is fixed to the second mounting plate 52.
[0050] In another embodiment of this utility model, the lower fixed frame 2 is provided with a guide groove 21, and the movable window 3 is movably installed in the guide groove 21.
[0051] In another embodiment of the present invention, the transmission mechanism 4 further includes a first counterweight rod 413 and a second counterweight rod 414. The first counterweight rod 413 is fixedly connected to one end of the first chain 407; the second counterweight rod 414 is fixedly connected to one end of the second chain 411.
[0052] In another embodiment of this utility model, the first sprocket 406 and the second sprocket 410 are arranged in parallel and opposite directions, and are disposed on the same horizontal plane.
[0053] In another embodiment of this utility model, after the worm 403 and the worm wheel 404 are engaged and connected, a self-locking structure is formed.
[0054] In another embodiment of this utility model, the first mounting plate 51 and the second mounting plate 52 are arranged in parallel and opposite directions, and are arranged on the same horizontal plane; the first mounting plate 51 and the second mounting plate 52 are both fixedly connected to the window frame 1.
[0055] In another embodiment of this utility model, the first mounting plate 51 is provided with a first pin hole 511, and multiple first pin holes 511 are provided; the second mounting plate 52 is provided with a second pin hole 521, and multiple second pin holes 521 are provided. By inserting fixing pins into the first pin holes 511, the second pin holes 521, and the window frame 1, the transmission mechanism 4 can be quickly fixed to the window frame 1.
[0056] This utility model's dual-drive synchronous lifting window achieves vertical lifting of the movable window 3 through open-loop chain drive and closed-loop control system. Its working process is as follows:
[0057] Power input phase:
[0058] The drive motor 402 can be a servo motor. After receiving the signal, the worm gear 403 rotates and outputs torque to mesh with the worm wheel 404. The worm wheel 404 is fixed to the drive shaft 405, and the drive shaft 405 rotates.
[0059] Transmission stage:
[0060] The rotation of the transmission shaft 405 drives the symmetrically fixed first sprocket 406 and second sprocket 410 to rotate; the first sprocket 406 meshes with the first chain 407, and the second sprocket 410 meshes with the second chain 411, realizing the lifting and lowering movement of the first chain 407 and the second chain 411; one end of the first chain 407 is fixedly connected to the movable window 3 through the first window sash mounting plate 408, and the other end is fixedly connected to the first counterweight rod 413; one end of the second chain 411 is fixedly connected to the movable window 3 through the second window sash mounting plate 412, and the other end is fixedly connected to the second counterweight rod 414. Then, when the first sprocket 406 engages the open-ring first chain 407 and the second sprocket 410 engages the open-ring second chain 411, the first chain 407 and the second chain 411 move along the guide groove 21 on the inner side of the window frame 1. Then, the first chain 407 drives the first window sash mounting plate 408 to rise and fall, and the second chain 411 drives the second window sash mounting plate 412 to rise and fall, thereby realizing the raising and lowering of the movable window 3. The first sprocket 406 and the second sprocket 410 are both fixed to the same transmission optical shaft 405, which can effectively ensure that the first chain 407 and the second chain 411 on both sides operate synchronously.
[0061] The third stage of the moving window's lifting mechanism:
[0062] One side of the movable window 3 is connected to the first chain 407 via the first window sash mounting plate 408, and the other side is connected to the second chain 411 via the second window sash mounting plate 412. The transmission of the first chain 407 and the second chain 411 ultimately realizes the raising and lowering (closing and opening) of the movable window 3.
[0063] The movable window 3 moves vertically up and down under the constraint of the guide groove 21, while also limiting the lateral offset of the window sash.
[0064] Positioning the self-locking phase:
[0065] like Figure 10-11 As shown, after the movable window 3 reaches the target position or stops, when the lead angle λ of the worm 403 is less than or equal to the equivalent friction angle ρ, the transmission mechanism 4 satisfies the self-locking condition. At this time, the frictional force generated on the helical surface of the worm 403 by the reverse driving force applied by the worm wheel 404 is greater than the axial component force, and cannot push the worm 403 to rotate. Mechanically, the reverse driving force is self-balanced under friction. This restricts the rotation of the first sprocket 406 and the second sprocket 410 caused by the gravity of the movable window 3, thus preventing the movable window 3 from sliding down and achieving self-locking of the entire transmission mechanism 4.
[0066] Lead angle λ: The angle between the worm 403 thread and the end face (the plane perpendicular to the axis); this angle is equivalent to the inclination angle of the inclined plane; the smaller the lead angle, the gentler the inclined plane.
[0067] The equivalent friction angle ρ is determined by the friction coefficient μ between the worm gear 404 and the worm 403 materials, satisfying ρ=arctan(μ). It measures the intensity of the frictional force.
[0068] Detailed explanation of technical principles:
[0069] Mechanical advantages of chain drives:
[0070] High rigidity load transmission: Each link of the first chain 407 and the second chain 411 precisely meshes with the teeth of the first sprocket 406 and the second sprocket 410, avoiding the window sash sinking caused by the elastic deformation of traditional ropes;
[0071] Dual-sided synchronous control: The symmetrically arranged first chain 407 and second chain 411 drive the first sprocket 406 and second sprocket 410 through the high-precision transmission motor 402 to achieve force couple balance and eliminate the risk of window sash tilting.
[0072] The self-locking principle is based on the principle that the lead angle λ ≤ the friction angle ρ. This makes the transmission act like a slightly inclined plane, where friction prevents reverse movement. The entire transmission mechanism 4 does not require additional brakes or braking devices. By utilizing the self-locking principle of the worm gear 404 and worm 403 within the gearbox 401, the entire movable window 3 can be positioned and stopped at any position during the lifting and lowering process, thus achieving self-locking of the entire transmission mechanism 4.
[0073] The dual-drive synchronous lifting window provided in this application adopts a dual-chain drive structure. The first chain 407 and the second chain 411 simultaneously carry the movable window 3, dispersing the load and reducing safety hazards. The single-motor system is low-cost and simple to control, effectively ensuring synchronous lifting. The first mounting plate 51 and the second mounting plate 52 provide a precise positioning reference for the reduction gearbox 401 and the second sprocket 410, which also improves installation efficiency. The mounting mechanism 5 adopts a pin-type installation, which makes disassembly and assembly quicker and more convenient, improving maintenance efficiency. The worm gear 403 and the worm wheel 404 mesh to form a self-locking structure, which can fix the movable window 3 at any position, making the positioning more reliable.
[0074] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dual-drive synchronous lifting window, characterized in that, The device includes a window frame, a lower fixed frame, a movable window, a transmission mechanism, and an installation mechanism. The lower fixed frame is fixed to the bottom side of the window frame, and the movable window is movably disposed on the lower fixed frame and located inside the window frame. The transmission mechanism is fixed to both the window frame and the movable window. The installation mechanism is fixed to both the transmission mechanism and the window frame. The transmission mechanism includes a reduction gearbox, a transmission motor, a worm gear, a worm wheel, a transmission optical shaft, a support plate, a first sprocket, a first chain, a first window sash mounting plate, a driven sprocket, a second sprocket, a second chain, and a second window sash mounting plate. The reduction gearbox is fixed to the window frame and the mounting mechanism, respectively. The transmission motor is fixed to the reduction gearbox. The worm gear is fixed to the transmission motor and meshes with the worm wheel. The transmission optical shaft is sequentially fixed through the worm wheel, the first sprocket, and the second sprocket. The first chain is sleeved on the outside of the first sprocket and the driven sprocket, respectively. The first window sash mounting plate is fixed to one end of the first chain and connected to the movable window. The driven sprocket is fixed to the reduction gearbox. The second sprocket is fixed to the mounting mechanism, and the second chain is sleeved on the outside of the second sprocket. The support plate is disposed at one end of the second sprocket and fixed to the second mounting plate. The transmission optical shaft passes through the support plate. The second window sash mounting plate is fixed to one end of the second chain and connected to the movable window. The mounting mechanism includes a first mounting plate and a second mounting plate. The first mounting plate is fixed to the window frame and the gearbox, respectively. The second mounting plate is fixed to the window frame, and the second sprocket is fixed to the second mounting plate.
2. The dual-drive synchronous lifting window according to claim 1, characterized in that, The lower fixed frame is provided with a guide groove, and the movable window is movably installed in the guide groove.
3. The dual-drive synchronous lifting window according to claim 1, characterized in that, The transmission mechanism further includes a first counterweight rod and a second counterweight rod, wherein the first counterweight rod is fixedly connected to one end of the first chain; and the second counterweight rod is fixedly connected to one end of the second chain.
4. A dual-drive synchronous lifting window according to claim 1, characterized in that, The first sprocket and the second sprocket are arranged in parallel and opposite directions, and are positioned on the same horizontal plane.
5. A dual-drive synchronous lifting window according to claim 1, characterized in that, After the worm and the worm wheel mesh and connect, a self-locking structure is formed.
6. A dual-drive synchronous lifting window according to claim 1, characterized in that, The first mounting plate and the second mounting plate are arranged in parallel and opposite directions, and are located on the same horizontal plane; both the first mounting plate and the second mounting plate are fixedly connected to the window frame.
7. A dual-drive synchronous lifting window according to claim 1, characterized in that, The first mounting plate is provided with a first pin hole, and there are multiple first pin holes; the second mounting plate is provided with a second pin hole, and there are multiple second pin holes.