A lifting assistance device for lifting a sliding door window

Abstract

This application discloses a lifting assist device for lifting sliding doors and windows. Its core structure includes a handle assembly, several pulley blocks, a transmission rod, and a reset assist assembly. The reset assist assembly is an innovative core structure capable of energy storage, comprising an assist mounting bracket, an assist movable block, an assist spring seat, three triangularly distributed springs, and a limiting screw. The assist movable block and the assist spring seat both have grooved positioning springs in their inner cavities. The limiting screw abuts against the outer end of the assist movable block to limit its travel, thus constructing an "energy storage-assistance" closed loop. This device can reduce the required operating force by 20-30% when lifting sliding doors and windows weighing 300-500KG, adapting to various heavy-duty lifting sliding door and window scenarios and significantly improving the user's operating experience.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window lock hardware accessories, specifically to a lifting assist device for lifting sliding doors and windows. Background Technology

[0002] The lift-and-slide window system is the core locking component of lift-and-slide windows. Its ease of operation, labor-saving performance, and adaptability to various scenarios directly determine the user experience. In commercial and residential heavy-duty lift-and-slide window scenarios (weighing 300-500KG), the locking operation force is a key performance indicator. As the demand for heavy-duty windows in modern buildings increases, traditional lift-and-slide window lock opening structures can no longer meet the requirements for labor-saving and stable use.

[0003] Among the existing technologies, the closest prior art is the "Lifting Device and Lifting Sliding Door for Lifting and Sliding Doors" with publication number CN217975852U. This technology uses the rolling friction of the rolling device and the inclined groove, combined with the rotation mechanism, to achieve force conversion, thereby reducing the opening and closing friction and achieving a labor-saving effect. However, it has obvious defects: it adopts a passive drag reduction method of "rolling friction instead of sliding friction", lacks a dedicated energy storage structure, and cannot actively counteract the gravity that the heavy pulley block needs to overcome when descending. The operating force for opening heavy lifting and sliding doors and windows weighing 300~500KG is too large (the operating force is about 70~100N), making it difficult for users to operate. Therefore, it is necessary to make improvements. Summary of the Invention

[0004] This utility model aims to solve one of the technical problems existing in the prior art.

[0005] This application provides a lifting assist device for lifting sliding doors and windows, which includes lifting sliding doors and windows, a handle assembly, a plurality of pulley blocks, a transmission rod and a guide engagement structure disposed on the lifting sliding doors and windows, and also includes a reset assist assembly, which is driven and engaged with the pulley blocks to provide assistance for lifting sliding doors and windows to rise, thereby realizing effortless opening of lifting sliding doors and windows.

[0006] The reset assist component includes an assist mounting bracket and an elastic energy storage device. The assist mounting bracket is fixed to the bottom of the lifting and sliding door / window, and the two ends of the elastic energy storage device are respectively hinged to the ends of the assist mounting bracket and the pulley block.

[0007] The elastic energy storage device includes an assisting movable block, an assisting spring seat, and an elastic element. One end of the assisting spring seat is hinged to the assisting mounting bracket. The assisting movable block is movably inserted into the other end of the assisting spring seat, and its outer end is hinged to the end of the pulley block. The elastic element is located between the inner end of the assisting movable block and the inner cavity of the assisting spring seat, and is used to store and release elastic potential energy.

[0008] It also includes a limiting screw, which is threaded to the end of the power assist spring seat away from the power assist mounting bracket, and the end of the limiting screw extends into the inner cavity of the power assist spring seat, thereby limiting the extension and retraction stroke by abutting against the outer end of the power assist movable block.

[0009] The elastic element is a spring. When the sliding door and window are lowered, the assisting block contracts and compresses the spring to store elastic potential energy. When the sliding door and window are raised, the spring releases elastic potential energy to push the assisting block to extend, providing assistance for the sliding door and window to rise.

[0010] The springs consist of three springs arranged in a triangular pattern, with two springs at the top and one at the bottom. The three springs work together to ensure balanced force distribution.

[0011] The inner end face of the assisting block has three first grooves, and the inner end face of the assisting spring seat has three second grooves. The two ends of each spring are respectively embedded in the first groove and the second groove to achieve the positioning and installation of the spring and prevent the spring from shifting during the extension and contraction process.

[0012] Each of the pulley groups is connected in series via a connecting rod to form a synchronous linkage unit. The front pulley group in the synchronous linkage unit is connected to the transmission rod, and the rear pulley group in the synchronous linkage unit is hinged to the reset assist component.

[0013] The guiding and cooperating structure includes several mounting blocks, sliders on the mounting blocks, and inclined grooves on the pulley group. The mounting blocks are fixed to the bottom of the lifting and sliding door and are movably inserted into the corresponding pulley group. The sliders and inclined grooves are slidably engaged to control the lifting and lowering of the mounting blocks and the lifting and sliding door.

[0014] The inclination angle of the inclined groove is 15°-30°.

[0015] The beneficial effects of this utility model are as follows: By combining the reset assist component with the weight of the lifting sliding door and window, when the lifting sliding door and window is lowered, the weight of the lifting sliding door and window assists in pushing the assist movable block into the assist spring seat and compressing the spring to store energy. When the lifting sliding door and window is raised, the spring releases elastic potential energy to push the assist movable block to extend, realizing an active assist energy storage closed loop. When the lifting sliding door and window is raised, the operating force can be reduced by 20-30%, which greatly reduces the difficulty of operation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the lifting assist device for lifting sliding doors and windows in the embodiments of this application; Figure 2 for Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a perspective view of the reset assist component and pulley system in the embodiments of this application; Figure 4 This is a perspective view of the reset assist component in the embodiments of this application; Figure 5 This is a cross-sectional view of the reset assist component in an embodiment of this application.

[0017] Figure Labels 1-Handle assembly, 2-Pulley block, 3-Mounting block, 4-Transmission rod, 5-Reset assist assembly, 6-Connecting rod, 7-Slider, 8-First groove, 9-Second groove, 10-Inclined groove, 11-Assist mounting bracket, 12-Assist movable block, 13-Assist spring seat, 14-Elastic element, 15-Limit screw. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The lifting assist device for sliding doors and windows provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0021] Example 1: This application provides a lifting assist device for lifting sliding doors and windows, which includes lifting sliding doors and windows, a handle assembly 1, a plurality of pulley groups 2, a transmission rod 4 and a guide cooperation structure disposed on the lifting sliding doors and windows, and also includes a reset assist assembly 5, which is in transmission cooperation with the pulley groups 2 to provide assistance for lifting sliding doors and windows to rise, thereby realizing effortless opening of lifting sliding doors and windows.

[0022] In this embodiment of the application, the reset assist component 5 includes an assist mounting bracket 11 and an elastic energy storage device. The assist mounting bracket 11 is fixed at the bottom of the lift-sliding door and window, and the two ends of the elastic energy storage device are respectively hinged to the ends of the assist mounting bracket and the pulley block 2.

[0023] like Figures 1 to 5 As shown, due to the aforementioned structure, when the lever assembly 1 drives the transmission rod 4 to move, causing the pulley block 2 to move and cooperate with the guide structure to lower and lock the sliding door / window, the weight of the sliding door / window itself applies downward pressure to the pulley block 2. This pressure is transmitted to one end of the elastic energy storage device hinged to the pulley block 2, assisting in pushing the elastic energy storage device to retract towards the assist mounting bracket 11, completing the initial storage of elastic potential energy. When the pulley block 2 moves and cooperates with the guide structure to raise and open the sliding door / window, the elastic energy storage device releases the stored potential energy, applying assistance to the pulley block 2. Through the combination and adaptation of the reset assist assembly 5 with the weight of the sliding door / window, the basic function of active assistance of the sliding door / window lock is realized, breaking the limitation of passive drag reduction in the existing technology, providing structural support for labor-saving opening of heavy-duty sliding doors / windows weighing over 300KG, and initially reducing the difficulty of operation.

[0024] Example 2: In this embodiment, in addition to the structural features of the aforementioned embodiments, the elastic energy storage device includes an assisting movable block 12, an assisting spring seat 13, and an elastic element 14. One end of the assisting spring seat 13 is hinged to the assisting mounting bracket 11, the assisting movable block 12 is movably inserted into the other end of the assisting spring seat 13, and its outer end is hinged to the end of the pulley block 2. The elastic element 14 is disposed between the inner end of the assisting movable block 12 and the inner cavity of the assisting spring seat 13, and is used to store and release elastic potential energy.

[0025] In this embodiment of the application, a limiting screw 15 is also included. The limiting screw 15 is threadedly connected to one end of the assist spring seat 13 away from the assist mounting bracket 11, and the end extends into the inner cavity of the assist spring seat 13, thereby limiting the extension and retraction stroke by abutting against the outer end of the assist movable block 12.

[0026] like Figures 4 to 5As shown, due to the aforementioned structure, when the handle assembly 1 drives the transmission rod 4 to move the pulley group 2 in coordination with the guide structure to lower the sliding door / window, the weight of the sliding door / window assists in pushing the assisting movable block 12, which is hinged to the pulley group 2, into the inner cavity of the assisting spring seat 13. Simultaneously, it compresses the elastic element 14 located between the inner end of the assisting movable block 12 and the inner cavity of the assisting spring seat 13, thus storing elastic potential energy. Conversely, when the handle assembly 1 is operated in the opposite direction, driving the transmission rod 4 to move the pulley group 2 in coordination with the guide structure to raise the sliding door / window, the elastic element 14 releases its potential energy to push... The assisting block 12 extends outward to the assisting spring seat 13, providing upward assistance for lifting the sliding door and window; when the assisting block 12 extends to the preset stroke, the end of the limiting screw 15, which is threaded to the assisting spring seat 13, abuts against the outer end of the assisting block 12, precisely limiting the extension stroke and preventing the assisting block 12 from disengaging from the assisting spring seat 13; through the combination of "assisting block 12 + assisting spring seat 13 + elastic element 14 + limiting screw 15", the stable storage and release of elastic potential energy is achieved, and the structural stability of the reset assisting component 5 is ensured, making the assisting action more precise and controllable.

[0027] Example 3: In this embodiment, in addition to the structural features of the aforementioned embodiments, the elastic element 14 is a spring. When the sliding door and window are lowered, the assisting block 12 contracts and compresses the spring to store elastic potential energy. When the sliding door and window are raised, the spring releases elastic potential energy to push the assisting block 12 to extend, providing assistance for the sliding door and window to rise.

[0028] In this embodiment of the application, there are three springs arranged in a triangular pattern, specifically two at the top and one at the bottom. The three springs work together to ensure balanced force.

[0029] In this embodiment of the application, the inner end face of the assisting block 12 is provided with three first grooves 8, and the inner end face of the assisting spring seat 13 is provided with three second grooves 9. The two ends of each spring are respectively embedded in the first groove 8 and the second groove 9 to realize the positioning and installation of the spring and prevent the spring from shifting during the extension and contraction process.

[0030] like Figures 4 to 5As shown, due to the aforementioned structure, when the lever assembly 1 drives the transmission rod 4 to move the pulley group 2 in conjunction with the guide mechanism, the lifting and sliding door / window descends. The weight of the lifting and sliding door / window assists in pushing the assisting movable block 12 into the assisting spring seat 13. At this time, the three springs (two upper and one lower, arranged in a triangular pattern) embedded in the first groove 8 at the inner end of the assisting movable block 12 are simultaneously compressed between the first groove 8 and the second groove 9 within the inner cavity of the assisting spring seat 13. The springs are positioned by the grooves without displacement, completing the balanced storage of elastic potential energy. The lever assembly 1 drives... The transmission rod 4 drives the pulley block 2 in conjunction with the guide structure so that when the sliding door and window are raised, the three springs release elastic potential energy simultaneously, pushing the assist block 12 to extend outward to the assist spring seat 13, providing balanced assistance for the lifting of the sliding door and window. Through the combination of "three triangular springs + groove positioning", the assistance is evenly transmitted, avoiding jamming caused by excessive local force, and preventing spring misalignment, ensuring the stability of the assistance performance after long-term use, and further enhancing the counteracting effect on the weight of heavy sliding doors and windows weighing over 300KG.

[0031] Example 4: In this embodiment, in addition to the structural features of the aforementioned embodiments, each pulley group 2 is connected in series via a connecting rod 6 to form a synchronous linkage unit. The front pulley group 2 in the synchronous linkage unit is connected to the transmission rod 4, and the rear pulley group 2 in the synchronous linkage unit is hinged to the reset assist component 5.

[0032] like Figure 1 and Figure 2 As shown, due to the aforementioned structure, when the handle assembly 1 is moved, the transmission rod 4 is activated. The transmission rod 4 transmits power to the front pulley group 2 of the series unit. Since several pulley groups 2 are connected in series via connecting rod 6, power is synchronously transmitted to all pulley groups 2, causing them to move synchronously relative to the lifting and sliding doors and windows. Simultaneously, the rear pulley group 2 of the series unit transmits the action to the reset assist assembly 5. The reset assist assembly 5 provides synchronous assistance to the entire series unit. Through the combination of "several pulley groups 2 connected in series + transmission rod 4 at the first end + reset assist assembly 5 at the end", the synchronous lifting and lowering action of several pulley groups 2 is achieved, avoiding overload on a single pulley group 2. At the same time, the assistance from the reset assist assembly 5 is evenly transmitted to all pulley groups 2, improving the overall force balance and action synchronization of the device.

[0033] Example 5: In this embodiment, in addition to the structural features of the aforementioned embodiments, the guide fit structure includes a plurality of mounting blocks 3, a slider 7 disposed on the mounting block 3, and an inclined groove 10 disposed on the pulley group 2. The mounting block 3 is fixed to the bottom of the lifting and sliding door and is movably inserted into the corresponding pulley group 2. The slider 7 and the inclined groove 10 slide to control the lifting and lowering of the mounting block 3 and the lifting and sliding door.

[0034] In this embodiment of the application, the inclination angle of the inclined groove 10 is 15°-30°.

[0035] like Figure 3 As shown, due to the above structure, when the lever assembly 1 drives the transmission rod 4 to move the pulley group 2 horizontally relative to the lifting and sliding door and window, the slider 7 on the bottom mounting block 3 of the lifting and sliding door and window slides synchronously within the inclined groove 10 of the pulley group 2. Since the inclined groove 10 is inclined at 15°-30°, the horizontal sliding of the slider 7 is converted into the lifting and lowering action of the pulley group 2 relative to the lifting and sliding door and window. Through the combination of "slider 7 + 15°-30° inclined groove 10", the smooth lifting and lowering guidance of the pulley group 2 relative to the lifting and sliding door and window is achieved. The tilt angle is adapted to the lifting and lowering stroke to avoid jamming or deviation during the lifting and lowering process. At the same time, the horizontal power is converted into the lifting and lowering action, improving the smoothness of operation and the movement stability of the structure.

[0036] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0037] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A lifting assist device for a lifting sliding door / window, comprising a lifting sliding door / window, a handle assembly disposed on the lifting sliding door / window, a plurality of pulley blocks, a transmission rod, and a guide engagement structure, characterized in that, It also includes a reset assist component, which works in conjunction with the pulley block transmission to provide assistance for lifting sliding doors and windows, enabling effortless opening of sliding doors and windows.

2. The lifting assist device for lifting sliding doors and windows according to claim 1, characterized in that, The reset assist component includes an assist mounting bracket and an elastic energy storage device. The assist mounting bracket is fixed to the bottom of the lifting and sliding door / window, and the two ends of the elastic energy storage device are respectively hinged to the ends of the assist mounting bracket and the pulley block.

3. The lifting assist device for lifting sliding doors and windows according to claim 2, characterized in that, The elastic energy storage device includes an assisting movable block, an assisting spring seat, and an elastic element. One end of the assisting spring seat is hinged to the assisting mounting bracket. The assisting movable block is movably inserted into the other end of the assisting spring seat, and its outer end is hinged to the end of the pulley block. The elastic element is located between the inner end of the assisting movable block and the inner cavity of the assisting spring seat, and is used to store and release elastic potential energy.

4. The lifting assist device for lifting sliding doors and windows according to claim 3, characterized in that, It also includes a limiting screw, which is threaded to the end of the power assist spring seat away from the power assist mounting bracket, and the end of the limiting screw extends into the inner cavity of the power assist spring seat, thereby limiting the extension and retraction stroke by abutting against the outer end of the power assist movable block.

5. A lifting assist device for lifting sliding doors and windows according to claim 3, characterized in that, The elastic element is a spring. When the sliding door and window are lowered, the assisting block contracts and compresses the spring to store elastic potential energy. When the sliding door and window are raised, the spring releases elastic potential energy to push the assisting block to extend, providing assistance for the sliding door and window to rise.

6. A lifting assist device for lifting sliding doors and windows according to claim 5, characterized in that, The springs consist of three springs arranged in a triangular pattern, with two springs at the top and one at the bottom. The three springs work together to ensure balanced force distribution.

7. A lifting assist device for lifting sliding doors and windows according to claim 6, characterized in that, The inner end face of the assisting block has three first grooves, and the inner end face of the assisting spring seat has three second grooves. The two ends of each spring are respectively embedded in the first groove and the second groove to achieve the positioning and installation of the spring and prevent the spring from shifting during the extension and contraction process.

8. A lifting assist device for lifting sliding doors and windows according to claim 1, characterized in that, Each of the pulley groups is connected in series via a connecting rod to form a synchronous linkage unit. The front pulley group in the synchronous linkage unit is connected to the transmission rod, and the rear pulley group in the synchronous linkage unit is hinged to the reset assist component.

9. A lifting assist device for lifting sliding doors and windows according to claim 1, characterized in that, The guiding and cooperating structure includes several mounting blocks, sliders on the mounting blocks, and inclined grooves on the pulley group. The mounting blocks are fixed to the bottom of the lifting and sliding door and are movably inserted into the corresponding pulley group. The sliders and inclined grooves are slidably engaged to control the lifting and lowering of the mounting blocks and the lifting and sliding door.

10. A lifting assist device for lifting sliding doors and windows according to claim 9, characterized in that, The inclination angle of the inclined groove is 15°-30°.

Images