A security protection assembly of a casement window opener with resistance and rebound protection
By designing a safety protection component for a casement window opener that can be quickly disassembled, the safety problem of electric window openers when encountering obstructions is solved, enabling rapid maintenance and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU XINGYU DIGITAL INTELLIGENCE TECHNOLOGY CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-29
AI Technical Summary
Existing electric window openers continue to operate when obstructed by foreign objects, leading to crush injuries or equipment damage. Furthermore, repairs are difficult, maintenance costs are high, and service life is affected.
A safety protection component for a casement window opener with obstacle detection and rebound protection was designed. It adopts a quick-disassembly structure and uses cross bolts and quick-release connectors to achieve rapid replacement of parts, including fixing and disassembling the housing, main controller, servo motor, and ring speed sensor.
It achieves automatic rebound protection when encountering obstacles, reducing maintenance difficulty and cost, and extending the service life of the equipment.
Smart Images

Figure CN224300666U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of casement window openers, specifically a safety protection component for casement window openers with obstacle detection and rebound protection. Background Technology
[0002] With the popularization of smart building and smart home technologies, casement electric window openers are widely used as automated ventilation equipment in residential, office, and hospital buildings. However, existing electric window openers continue to operate if they encounter obstructions (such as children's fingers or tree branches), which can easily cause crush injuries or equipment damage. Although some window openers on the market have obstruction detection and rebound protection components, their complex internal structures, often using irregularly shaped screws, glue bonding, or embedded designs, require special tools or even damage to the outer shell during maintenance, increasing maintenance costs and difficulty. As electric window openers age, problems such as screw wear and motor failures become frequent. If faulty parts cannot be replaced quickly, it will directly affect the equipment's lifespan and user experience. Therefore, we propose a casement window opener safety protection component with obstruction detection and rebound protection. Utility Model Content
[0003] The purpose of this invention is to provide a safety protection component for a casement window opener with obstacle detection and rebound protection, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a safety protection component for a casement window opener with obstacle detection and rebound protection, comprising a housing, a main controller mounted on the left side of the inner wall of the housing, a servo motor mounted on the right side of the main controller, a screw connected to the right side of the output end of the servo motor, an annular speed sensor mounted on the outer ring of the output end of the servo motor, a set of limiting posts provided on both the front and rear sides of the annular speed sensor, two sets of support sleeves evenly fitted on the outer ring of the screw, a set of second fixing ears provided on both the front and rear sides of the main controller and the servo motor, a fourth cross bolt provided in the second fixing ears, a first threaded hole evenly opened on the bottom of the inner wall of the housing, the fourth cross bolt screwed into the first threaded hole, positioning holes and positioning grooves opened on the bottom of the inner wall of the housing and the top of the housing cover, the upper and lower sides of the limiting posts and support sleeves respectively inserted into the positioning holes and positioning grooves.
[0005] Preferably, a plug is provided on the right side of the output end of the servo motor, and a slot is provided on the left side of the screw. The slot extends through the upper and lower sides of the screw, and the plug is inserted into the slot. The annular speed sensor and the servo motor are electrically connected to the main controller, and a quick-release connector is provided between the connection lines of the annular speed sensor, the servo motor and the main controller.
[0006] Preferably, the outer side wall of the screw is screwed with an internally threaded slider, the bottom of the internally threaded slider is evenly provided with two sets of grooves, and a roller is provided in the groove. The bottom of the inner side wall of the housing is evenly provided with two sets of guide grooves, and the roller is provided in the guide groove.
[0007] Preferably, the right side of the internal threaded slider is provided with two sets of insertion holes, a guide rod is provided in the insertion hole, a second threaded hole is provided at the top of the guide rod, a first through hole is provided at the top of the insertion hole, a third cross bolt is provided in the first through hole, the third cross bolt is screwed into the second threaded hole, and the right side of the guide rod penetrates the right side of the housing and is connected to a mounting bracket.
[0008] Preferably, the top of the mounting bracket is provided with a connecting sleeve, the connecting sleeve is provided with a second cross bolt, and a set of first fixing ears are provided on both the left and right sides of the housing.
[0009] Preferably, the top of the housing is provided with a third threaded hole, and the top of the cover is provided with a second through hole. A first cross bolt is provided in the second through hole, and the first cross bolt is screwed into the third threaded hole.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: When the cover is fixed to the housing by the first cross bolt, the cover will press and fix the limiting post and the support sleeve between the housing and the cover, thereby fixing the ring speed sensor and the screw. The main controller and the servo motor are both fixed in the housing by the fourth cross bolt. Therefore, by simply using a cross screwdriver to unscrew the first, second and fourth cross bolts and disconnect the quick-release connector, the various parts inside the housing can be taken out. This allows the user to quickly disassemble the entire device with a cross screwdriver, thereby achieving the effect of quick replacement and disassembly of the internal parts of the device, greatly reducing the maintenance cost and difficulty of the device. Attached Figure Description
[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0012] In the attached diagram:
[0013] Figure 1 This is a structural schematic diagram of a safety protection component for a casement window opener with obstacle detection and rebound protection according to this utility model.
[0014] Figure 2 This is a first front sectional view of a safety protection component for a casement window opener with obstacle detection and rebound protection according to this utility model.
[0015] Figure 3 This is a second front sectional view of a safety protection component for a casement window opener with obstacle detection and rebound protection according to this utility model.
[0016] In the diagram: 1. Housing; 11. Housing cover; 12. First cross bolt; 13. First fixing lug; 14. Mounting bracket; 15. Connecting sleeve; 16. Second cross bolt; 17. Guide rod; 18. Support sleeve; 19. Screw; 2. Internal threaded slider; 21. Roller; 22. Third cross bolt; 23. Servo motor; 24. Main controller; 25. Second fixing lug; 26. Fourth cross bolt; 27. Ring speed sensor; 28. Limiting post; 29. Insert block; 3. Quick-release connector. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-3A safety protection component for a swing window opener with obstacle detection and rebound protection includes a housing 1. A main controller 24 is placed on the left side of the inner wall of the housing 1. A servo motor 23 is placed on the right side of the main controller 24. A screw 19 is connected to the right side of the output end of the servo motor 23. A ring speed sensor 27 is placed on the outer ring of the output end of the servo motor 23. A set of limit posts 28 are fixedly installed on both the front and rear sides of the ring speed sensor 27. Two sets of support sleeves 18 are uniformly rotated around the outer ring of the screw 19, supporting the rotation of the screw 19. The main controller 24 and the servo motor 23 are fixedly installed on both the front and rear sides. A set of second fixing ears 25 is provided, and a fourth cross bolt 26 is rotatably installed in the second fixing ears 25. The bottom of the inner side wall of the housing 1 is evenly provided with first threaded holes, and the fourth cross bolt 26 is screwed into the first threaded holes. The fourth cross bolt 26 passes through the second fixing ears 25 and is screwed into the first threaded holes of the housing 1, thereby fixing the main controller 24 and the servo motor 23 in the housing 1. The bottom of the inner side wall of the housing 1 and the top of the housing cover 11 are provided with positioning holes and positioning grooves. The upper and lower sides of the limiting post 28 and the support sleeve 18 are respectively inserted into the positioning holes and positioning grooves. The right side of the output end of the servo motor 23 is fixed. A plug 29 is fixedly provided. A slot is provided on the left side of the screw 19, and the slot extends through the upper and lower sides of the screw 19. The plug 29 is inserted into the slot. When the servo motor 23 rotates, it will drive the screw 19 to rotate through the plug 29. The ring speed sensor 27 and the servo motor 23 are electrically connected to the main controller 24. A quick-release connector 3 is fixedly provided between the connection lines of the ring speed sensor 27, the servo motor 23 and the main controller 24. The top of the housing 1 has a third threaded hole evenly provided. The top of the cover 11 has a second through hole evenly provided. The second through hole is used for rotation. A first cross bolt 12 is installed, which is screwed into the third threaded hole. The limiting post 28 and the support sleeve 18 are aligned with the positioning holes and positioning grooves on the housing 1 and the cover 11. Then, the first cross bolt 12 passes through the second through hole of the cover 11 and is screwed into the third threaded hole of the housing 1, thereby fixing the cover 11 to the top of the housing 1. At this time, the outer sides of the limiting post 28 and the support sleeve 18 will be inserted into the positioning holes and positioning grooves respectively, thereby stably fixing the limiting post 28 and the support sleeve 18 between the housing 1 and the cover 11, thus achieving the effect of fixing the annular speed sensor 27 and the screw 19.
[0019] An internally threaded slider 2 is screwed onto the outer wall of the screw 19. Two sets of grooves are evenly distributed at the bottom of the internally threaded slider 2, and rollers 21 are rotatably disposed within these grooves. Two sets of guide grooves are evenly distributed at the bottom of the inner wall of the housing 1, and the rollers 21 are rotatably disposed within these guide grooves. Two sets of insertion holes are evenly distributed on the right side of the internally threaded slider 2, and guide rods 17 are slidably disposed within these insertion holes. A second threaded hole is formed at the top of the guide rod 17, and a first through hole is formed at the top of the insertion hole. A third cross bolt 22 is rotatably disposed within the first through hole and screwed into the second threaded hole. The third cross bolt 22 is then screwed through the first through hole of the internally threaded slider 2 and screwed into the second threaded hole of the screw 19, thereby fixing the guide rod 17 within the insertion hole of the internally threaded slider 2. Inside, when the screw 19 rotates, it will drive the internal threaded slider 2 to move to the right with the assistance of the roller 21, thereby driving the guide rod 17 to move to the right. The right side of the guide rod 17 passes through the right side of the housing 1 and is connected to the mounting bracket 14. The top of the mounting bracket 14 is fixedly provided with a connecting sleeve 15. The second cross bolt 16 is rotatably provided inside the connecting sleeve 15. A set of first fixing ears 13 are fixedly provided on both the left and right sides of the housing 1. First, bolt holes are opened on the windowsill. Then, expansion bolts are used to pass through the first fixing ears 13 and insert into the bolt holes on the windowsill to fix the housing 1 to the windowsill. Then, an internal threaded hole is opened on the window sash. The second cross bolt 16 passes through the connecting sleeve 15 and is screwed into the internal threaded hole on the window sash to complete the installation of the device.
[0020] Working principle: First, bolt holes are made on the windowsill. Then, expansion bolts are inserted through the first fixing lug 13 into the bolt holes on the windowsill to fix the housing 1 on the windowsill. Then, internal threaded holes are made on the window sash. The second cross bolt 16 is screwed through the connecting sleeve 15 and into the internal threaded hole on the window sash to complete the installation of the device.
[0021] The main controller 24 and servo motor 23 are fixed inside the housing 1 by threading the fourth cross bolt 26 through the second fixing lug 25 and connecting it to the first threaded hole of the housing 1. The limiting post 28 and the support sleeve 18 are aligned with the positioning holes and positioning slots on the housing 1 and the housing cover 11. Then, the first cross bolt 12 is threaded through the second through hole of the housing cover 11 and connected to the third threaded hole of the housing 1, thereby fixing the housing cover 11 to the top of the housing 1. At this time, the outer sides of the limiting post 28 and the support sleeve 18 will be inserted into the positioning holes and positioning slots respectively, thereby stably fixing the limiting post 28 and the support sleeve 18 between the housing 1 and the housing cover 11, thus achieving the effect of fixing the ring speed sensor 27 and the screw 19. The screw 19 is supported to rotate by the support sleeve 18. The insert 29 is inserted into the slot of the screw 19. When the servo motor 23 rotates, it will drive the screw 19 to rotate through the insert 29. The third cross bolt 22 passes through the inner... The first through hole of the threaded slider 2 is screwed into the second threaded hole of the screw 19, thereby fixing the guide rod 17 in the insertion hole of the internal threaded slider 2. When the screw 19 rotates, it will drive the internal threaded slider 2 to move to the right with the assistance of the roller 21, which in turn drives the guide rod 17 to move to the right. The guide rod 17 drives the mounting bracket 14 and the connecting sleeve 15 to move to the right. The connecting sleeve 15 drives the window sash to move through the second cross bolt 16, thereby realizing the automatic opening of the window. During this process, the speed of the output end of the servo motor 23 is monitored in real time by the ring speed sensor 27. When the window sash is obstructed and cannot move, the speed of the output end of the servo motor 23 will suddenly drop or stop. At this time, the ring speed sensor 27 sends the speed of the output end of the servo motor 23 to the main controller 24, which controls the servo motor 23 to flip, thereby making the window sash move back, thus realizing the effect of obstruction rebound protection.
[0022] When the entire device malfunctions and parts need to be replaced, first unscrew the first Phillips bolt 12 and the second Phillips bolt 16 with a Phillips screwdriver, then move the cover 11 upwards and remove it. Then unscrew the third Phillips bolt 22, then move the mounting bracket 14 to the right to separate the guide rod 17 from the internal threaded slider 2 and pull it out of the housing 1. Then move the screw 19 upwards to separate it from the insert block 29, then move the screw 19, support sleeve 18 and internal threaded slider 2 upwards out of the housing 1. Then disconnect the quick-release connector 3 between the ring speed sensor 27 and the servo motor 23 and the main controller 24, and unscrew the fourth Phillips bolt 26. This allows the main controller 24, servo motor 23 and ring speed sensor 27 to be moved upwards out of the housing 1, so that the user can quickly disassemble the entire device with a Phillips screwdriver, thus achieving the effect of quick replacement and disassembly of the internal parts of the device.
Claims
1. A safety protection component for a casement window opener with obstacle detection and rebound protection, characterized in that, The device includes a housing (1), a main controller (24) is placed on the left side of the inner wall of the housing (1), a servo motor (23) is placed on the right side of the main controller (24), a screw (19) is connected to the right side of the output end of the servo motor (23), a ring speed sensor (27) is placed on the outer ring of the output end of the servo motor (23), a set of limiting posts (28) are provided on both the front and rear sides of the ring speed sensor (27), and two sets of support sleeves (18) are evenly fitted on the outer ring of the screw (19). The main controller... (24) and the servo motor (23) are provided with a set of second fixing ears (25) on both the front and rear sides. The second fixing ears (25) are provided with a fourth cross bolt (26). The bottom of the inner wall of the housing (1) is uniformly opened with first threaded holes. The fourth cross bolt (26) is screwed into the first threaded hole. The bottom of the inner wall of the housing (1) and the top of the cover (11) are provided with positioning holes and positioning grooves. The upper and lower sides of the limiting post (28) and the support sleeve (18) are respectively inserted into the positioning holes and positioning grooves.
2. The safety protection component for a casement window opener with obstacle detection and rebound protection according to claim 1, characterized in that: A plug (29) is provided on the right side of the output end of the servo motor (23). A slot is provided on the left side of the screw (19). The slot passes through the upper and lower sides of the screw (19). The plug (29) is inserted into the slot. The ring speed sensor (27) and the servo motor (23) are electrically connected to the main controller (24). A quick-release connector (3) is provided between the connection lines of the ring speed sensor (27) and the servo motor (23) and the main controller (24).
3. A safety protection component for a casement window opener with obstacle detection and rebound protection as described in claim 1, characterized in that: The outer wall of the screw (19) is screwed with an internal thread slider (2). The bottom of the internal thread slider (2) is evenly provided with two sets of grooves, and a roller (21) is provided in the groove. The bottom of the inner wall of the housing (1) is evenly provided with two sets of guide grooves, and the roller (21) is provided in the guide groove.
4. A safety protection component for a casement window opener with obstacle detection and rebound protection according to claim 3, characterized in that: Two sets of insertion holes are evenly provided on the right side of the internal thread slider (2). A guide rod (17) is provided in the insertion hole. A second threaded hole is provided at the top of the guide rod (17). A first through hole is provided at the top of the insertion hole. A third cross bolt (22) is provided in the first through hole. The third cross bolt (22) is screwed into the second threaded hole. The right side of the guide rod (17) passes through the right side of the housing (1) and is connected to the mounting bracket (14).
5. A safety protection component for a casement window opener with obstacle detection and rebound protection according to claim 4, characterized in that: The top of the mounting bracket (14) is provided with a connecting sleeve (15), and a second cross bolt (16) is provided inside the connecting sleeve (15). A set of first fixing ears (13) are provided on both the left and right sides of the housing (1).
6. A safety protection component for a casement window opener with obstacle detection and rebound protection according to claim 1, characterized in that: The top of the housing (1) is uniformly provided with a third threaded hole, and the top of the cover (11) is uniformly provided with a second through hole. A first cross bolt (12) is provided in the second through hole, and the first cross bolt (12) is screwed into the third threaded hole.