Motor mounting structure of electric window and out-opening window
By improving the motor mounting structure, including the design of the frame, adapter frame, sash, mounting plate and motor beam, the problems of bloated structure, difficult installation and poor sealing performance of electric windows have been solved, stable installation and convenient maintenance of the motor have been achieved, and the overall performance and service life of the electric window have been improved.
Patent Information
- Application Number
- CN202422807722.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing electric windows have problems such as bloated structure, difficult installation, poor sealing performance and inconvenient motor maintenance. In addition, the gap between the motor beam and the window sash and adapter frame is prone to water accumulation, which affects the service life.
A motor installation structure is adopted, including a frame, an adapter frame, a window sash, a mounting plate and a motor beam. The coordination of the mounting plate and the motor beam enables the motor beam to be stably installed. Overlapping steps and rubber strips are provided on the adapter frame and the window sash to enhance the sealing performance. Snap-fit components and screws are used to ensure a stable connection, conceal the snap-fit structure and simplify the installation process.
The invention realizes the stable installation of the motor, improves the sealing performance and structural stability of the electric window, reduces air leakage and water leakage, simplifies the installation steps, facilitates motor maintenance, and extends the service life of the motor.
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Figure CN223446860U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to door and window technical field especially, relate to a motor mounting structure and outer open window of electric window. BACKGROUND
[0002] As the main opening form of aluminum alloy door and window product, the outer open window has the characteristics of high sealing performance and does not occupy indoor space when the sash is opened, so it is popular among consumers and widely used. With the development of Internet of Things, intelligent control technology and motor technology, electric door and window develops rapidly and can be opened and closed through remote control, voice and WIFI remote control. Hidden electric door and window is loved by many customers, and the market scale is gradually expanding.
[0003] Through retrieval, the patent with publication number CN209637507U discloses a four-side ventilated electric sliding window. The patent realizes the electric opening and closing of the window. However, the above-mentioned electric window is not perfect in design process, the types of profile lap joints are too many, and the structure design is too bulky, which indirectly causes high economic cost, installation difficulty, and difficulty in maintaining the motor in the later period. In addition, there is a gap between the motor beam of the above-mentioned electric window and the sash and the adapter frame, which has the risk of water accumulation and easily affects the service life of the motor. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a motor mounting structure of electric window and outer open window, which has the advantages of simplified structure, convenient installation, good sealing performance, and convenient motor maintenance.
[0005] In the first aspect, the utility model provides a motor mounting structure of electric window, which comprises:
[0006] a frame;
[0007] an adapter frame arranged on the frame;
[0008] a sash arranged at one end of the adapter frame away from the frame;
[0009] a mounting buckle comprising a connecting flange and an abutting side plate, the connecting flange being used for connecting with the frame, the abutting side plate being used for abutting with the adapter frame, and a first clamping part being arranged on the side of the abutting side plate away from the adapter frame;
[0010] a motor beam provided with a containing cavity for placing a motor, one end of the motor beam towards the frame being provided with a supporting leg and a second clamping part, the supporting leg being used for supporting the side of the motor beam away from the adapter frame, the second clamping part being capable of clamping with the first clamping part, so that the abutting side plate can support the side of the motor beam close to the adapter frame, and the motor beam can abut with the adapter frame and the sash, respectively.
[0011] The motor mounting structure of the electric window provided by the utility model, comprising a frame, an adapter frame, a window sash, a mounting buckle plate and a motor crossbeam, realizes the stable installation of the motor crossbeam through the cooperation of the mounting buckle plate and the motor crossbeam, meanwhile, the motor crossbeam can abut against the adapter frame and the window sash respectively, effectively solves the problems of bulky structure, difficult installation, poor sealing performance and difficult motor maintenance and hides the clamping structure between the motor crossbeam and the mounting buckle plate, and has the advantages of simplified structure, convenient installation, good sealing performance and convenient motor maintenance.
[0012] Further, the adapter frame is provided with a first lap joint step, the first lap joint step is arranged on the side of the adapter frame away from the motor crossbeam, and the first lap joint step is used for lapping with the window sash; the window sash is provided with a second lap joint step, the second lap joint step is arranged on the side of the window sash facing the motor crossbeam, and the second lap joint step is used for lapping with the adapter frame.
[0013] By arranging the first lap joint step and the second lap joint step on the adapter frame and the window sash respectively, the window sash can be more stably installed on the adapter frame, thereby solving the problem of loose connection between the window sash and the adapter frame. This design not only improves the sealing performance of the electric window, but also enhances the structural stability, further improving the overall performance and service life of the electric window. The arrangement of the first lap joint step and the second lap joint step ensures that the window sash and the adapter frame can be tightly matched, which effectively prevents problems such as air leakage and water leakage, helping to improve the sealing performance of the electric window.
[0014] Further, a first rubber strip is arranged between the first lap joint step and the window sash, the first rubber strip is used for closing the gap between the first lap joint step and the window sash; a second rubber strip is arranged between the second lap joint step and the adapter frame, and the second rubber strip is used for closing the gap between the second lap joint step and the adapter frame.
[0015] By arranging the first rubber strip at the joint between the first lap joint step and the window sash, the airtightness of the window sash and the adapter frame is ensured. The second rubber strip is arranged at the corresponding position between the second lap joint step and the adapter frame to enhance the sealing effect of the overall structure. This design and layout scheme of the rubber strip effectively reduces the possibility of external wind and rain entering the window body through the gap.
[0016] Further, the utility model also includes a first screw and a second screw, the first screw can penetrate the connecting flange to the frame, and the second screw is used for penetrating the motor crossbeam to the frame.
[0017] By means of the technical scheme, the first screw is used to penetrate and connect the retaining edge to the frame, so that the stable connection between the retaining edge and the frame is ensured, thereby enhancing the stability of the overall structure. The second screw is used to penetrate and connect the motor beam to the frame, so that the motor beam is further stably fixed on the frame, thereby effectively reducing the vibration and displacement during the operation of the motor, and ensuring the working stability and durability of the electric window.
[0018] Further, the support leg comprises a lower retaining edge and a support edge, the support edge and the lower retaining edge are connected in an L shape, and the lower retaining edge is arranged on the side of the support edge facing the adapter frame. The support edge is connected with the motor beam.
[0019] By means of the technical scheme, the design of the support leg provides a stable support structure through the L-shaped connection of the lower retaining edge and the support edge. The arrangement direction of the lower retaining edge enables it to effectively support the side of the motor beam close to the adapter frame, thereby enhancing the stability of the motor beam.
[0020] Further, the first clamping part is one of a buckle and a buckle groove, and the second clamping part is the other of the buckle and the buckle groove.
[0021] By means of the technical scheme, the first clamping part can be a buckle, and the second clamping part can be a buckle groove. The motor beam is directly inserted into the buckle groove through the buckle, thereby achieving quick and stable installation. This design not only reduces the operation steps during installation, but also improves the installation efficiency. At the same time, through the cooperation of the clamping parts, the motor beam is not easy to loosen after being fixed, thereby further improving the stability of the structure and the working reliability of the motor.
[0022] Further, it further comprises a screen fan, the screen fan is arranged on the side of the motor beam away from the frame, and the motor beam is provided with a screen fan lap joint step at the end away from the frame. The screen fan lap joint step is used to lap joint with the screen fan.
[0023] By means of the technical scheme, when the screen fan and the screen fan lap joint step are lapped, they can block each other's lines, which helps to reduce the appearance of profile lines and makes the appearance simple and more beautiful.
[0024] Further, a lap joint adhesive tape is arranged between the screen fan and the screen fan lap joint step, and the lap joint adhesive tape is used to close the gap between the screen fan and the screen fan lap joint step.
[0025] By means of the technical scheme, the lap joint adhesive tape arranged between the screen fan and the screen fan lap joint step can effectively close the gap between them, thereby avoiding the problems of air leakage and dust leakage.
[0026] Further, the abutting side plate comprises a first abutting side plate, a second abutting side plate and a connecting inclined plate, the first clamping part is arranged on the first abutting side plate, the second abutting side plate is connected with the connecting flange in an L shape, and opposite ends of the connecting inclined plate are connected with the first abutting side plate and the second abutting side plate respectively.
[0027] By adopting the technical scheme, the abutting side plate composed of the first abutting side plate, the second abutting side plate and the connecting inclined plate can avoid the structure protruding below the adapter frame, so that the first abutting side plate can be closely attached to the adapter frame.
[0028] In a second aspect, the utility model provides a kind of outer-opening window, including the motor installation structure of any one of above electric window.
[0029] As known from above, the motor installation structure of electric window provided by the utility model includes a frame, an adapter frame, a sash, a mounting buckle plate and a motor beam, the stable installation of the motor beam is realized by the cooperation of the mounting buckle plate and the motor beam, meanwhile, the motor beam can be abutted with the adapter frame and the sash respectively, effectively solve the problems of bulky structure, difficult installation, poor sealing performance and difficult maintenance of motor, and the clamping structure between the motor beam and the mounting buckle plate is hidden, with the advantages of simplified structure, convenient installation, good sealing performance, convenient maintenance of motor.
[0030] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and the appended drawings. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 The structure diagram of the motor installation structure of electric window is provided.
[0032] Figure 2 The structure diagram of the motor installation structure of electric window is provided. Figure 1 The structure diagram of the motor installation structure of electric window is provided.
[0033] Figure 3 The structure diagram of the motor installation structure of electric window is provided. Figure 1 The structure diagram of the motor installation structure of electric window is provided.
[0034] In the drawings: 10, motor; 100, frame; 200, adapter frame; 210, first lap step; 220, second adhesive tape; 300, sash; 310, second lap step; 320, first adhesive tape; 400, mounting buckle plate; 410, connecting flange; 420, abutting side plate; 421, first clamping part; 422, buckle; 423, first abutting side plate; 424, second abutting side plate; 425, connecting inclined plate; 500, motor cross beam; 510, containing cavity; 520, supporting leg; 521, lower flange; 522, supporting edge; 530, second clamping part; 531, buckle groove; 540, sash lap step; 550, C-shaped groove; 610, first screw; 620, second screw; 700, sash; 710, lap adhesive tape. DETAILED DESCRIPTION
[0035] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.
[0036] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of specific examples are described in the following. Of course, they are only examples and are not intended to limit the present application. In addition, the present application can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed.
[0037] With the rapid development of smart home technology, electric windows have gradually become an important part of modern buildings. However, there are some limitations in the design of existing electric windows, such as bulky structure, difficult installation, inconvenient maintenance of motor, etc. In particular, the gap between the motor cross beam and the sash and the adapter frame is prone to water accumulation, affecting the service life of the motor. To solve these problems, the present application proposes a motor mounting structure for electric windows, aiming to provide a compact, easy-to-install and water-resistant solution.
[0038] Referring to the accompanying drawings Figure 1In one of the embodiments, the motor mounting structure of the electric window comprises a frame 100, an adapter frame 200, a sash 300, a mounting buckle plate 400 and a motor beam 500. The adapter frame 200 is arranged on the frame 100; the sash 300 is arranged at one end of the adapter frame 200 away from the frame 100; the mounting buckle plate 400 comprises a connecting flange 410 and an abutting side plate 420, the connecting flange 410 is used for connecting with the frame 100, the abutting side plate 420 is used for abutting with the adapter frame 200, one side of the abutting side plate 420 away from the adapter frame 200 is provided with a first clamping part 421; the motor beam 500 is provided with a containing cavity 510 for placing the motor 10, one end of the motor beam 500 towards the frame 100 is provided with a supporting leg 520 and a second clamping part 530, the supporting leg 520 is used for supporting one side of the motor beam 500 away from the adapter frame 200, the second clamping part 530 can be clamped with the first clamping part 421, so that the abutting side plate 420 can support one side of the motor beam 500 close to the adapter frame 200, and the motor beam 500 can abut with the adapter frame 200 and the sash 300 respectively.
[0039] As can be seen from the above, the motor mounting structure of the electric window comprises the frame 100, the adapter frame 200, the sash 300, the mounting buckle plate 400 and the motor beam 500, through the cooperation of the mounting buckle plate 400 and the motor beam 500, the stable mounting of the motor beam 500 is realized, meanwhile, the motor beam 500 can abut with the adapter frame 200 and the sash 300 respectively, effectively solving the problems of bulky structure, difficult installation, poor sealing performance and difficult motor maintenance, and hiding the clamping structure between the motor beam 500 and the mounting buckle plate 400, having the advantages of simplified structure, convenient installation, good sealing performance, convenient motor maintenance.
[0040] In one of the embodiments, the adapter frame 200 is provided with a first lap joint step 210, the first lap joint step 210 is arranged on one side of the adapter frame 200 away from the motor beam 500, and the first lap joint step 210 is used for lap joint with the sash 300; the sash 300 is provided with a second lap joint step 310, the second lap joint step 310 is arranged on one side of the sash 300 towards the motor beam 500, and the second lap joint step 310 is used for lap joint with the adapter frame 200.
[0041] By adopting the above technical solution, by providing a first overlapping step 210 and a second overlapping step 310 on the adapter frame 200 and the window sash 300, respectively, the window sash 300 can be more securely mounted on the adapter frame 200, thereby resolving the problem of a loose connection between the window sash 300 and the adapter frame 200. This design not only improves the sealing performance of the electric window, but also enhances structural stability, further improving the overall performance and service life of the electric window. The provision of the first overlapping step 210 and the second overlapping step 310 ensures a tight fit between the window sash 300 and the adapter frame 200. This structural design effectively prevents problems such as air and water leakage, helping to improve the sealing performance of the electric window.
[0042] In one embodiment, a first rubber strip 320 is provided between the first overlapping step 210 and the window sash 300, and the first rubber strip 320 is used to close the gap between the first overlapping step 210 and the window sash 300; a second rubber strip 220 is provided between the second overlapping step 310 and the adapter frame 200, and the second rubber strip 220 is used to close the gap between the second overlapping step 310 and the adapter frame 200.
[0043] Using this technical solution, the first rubber strip 320 is positioned at the junction between the first overlapping step 210 and the window sash 300, ensuring a tight seal between the window sash 300 and the adapter frame 200. The second rubber strip 220 is positioned at a corresponding position between the second overlapping step 310 and the adapter frame 200, enhancing the overall sealing effect. This design and layout of the rubber strips effectively reduces the possibility of wind and rain intruding through gaps in the window.
[0044] In one embodiment, a first screw 610 and a second screw 620 are further included. The first screw 610 can penetrate the connecting edge 410 to the frame 100 , and the second screw 620 is used to penetrate the motor beam 500 to the frame 100 .
[0045] Using this technical solution, the first screw 610 penetrates the connecting rib 410 and the frame 100, ensuring a stable connection between the connecting rib 410 and the frame 100, thereby enhancing the stability of the overall structure. The second screw 620 penetrates the motor beam 500 and the frame 100, further ensuring that the motor beam 500 is stably fixed to the frame 100. This effectively reduces vibration and displacement when the motor 10 is operating, ensuring the stability and durability of the power window.
[0046] In one embodiment, a gauze fan 700 is further included. The gauze fan 700 is arranged on the side of the motor beam 500 away from the frame 100. A gauze fan overlapping step 540 is provided on the end of the motor beam 500 away from the frame 100. The gauze fan overlapping step 540 is used to overlap with the gauze fan 700.
[0047] By means of the above technical scheme, when the screen fan 700 and the screen fan lap joint step 540 are lapped, the lines can be blocked from each other, which helps to reduce the profile line view and make the appearance simple and more beautiful.
[0048] In one of the embodiments, a lap joint adhesive tape 710 is further arranged between the screen fan 700 and the screen fan lap joint step 540, and the lap joint adhesive tape 710 is used to close the gap between the screen fan 700 and the screen fan lap joint step 540.
[0049] By means of the above technical scheme, the lap joint adhesive tape 710 is arranged between the screen fan 700 and the screen fan lap joint step 540, which can effectively close the gap between the two, thereby avoiding the problems of air leakage and dust leakage.
[0050] With reference to the accompanying drawings Figure 2 In one of the embodiments, the support leg 520 comprises a lower stop edge 521 and a support edge 522, the support edge 522 and the lower stop edge 521 are connected in an L shape, and the lower stop edge 521 is arranged on the side of the support edge 522 facing the adapter frame 200, and the support edge 522 is connected with the motor cross beam 500.
[0051] By means of the above technical scheme, the design of the support leg 520 provides a stable support structure through the L-shaped connection of the lower stop edge 521 and the support edge 522. The arrangement direction of the lower stop edge 521 enables it to effectively support the side of the motor cross beam 500 close to the adapter frame 200, thereby enhancing the stability of the motor cross beam 500.
[0052] With reference to the accompanying drawings Figure 2 , the accompanying drawings Figure 3 In one of the embodiments, the first clamping part 421 is one of the buckle 422 and the buckle groove 531, and the second clamping part 530 is the other one of the buckle 422 and the buckle groove 531.
[0053] By means of the above technical scheme, the first clamping part 421 can be provided as the buckle 422, and the second clamping part 530 is provided as the buckle groove 531. The motor cross beam 500 is directly inserted into the buckle groove 531 through the buckle 422, thereby realizing quick and stable installation. This design not only reduces the operation steps during installation, but also improves the installation efficiency. At the same time, through the cooperation of the clamping parts, the motor cross beam 500 is not easy to loosen after being fixed, which further improves the stability of the structure and the working reliability of the motor 10.
[0054] In one of the embodiments, the end of the motor cross beam 500 away from the frame 100 is further provided with a C-shaped groove 550, and the C-shaped groove 550 is located on the side of the screen fan lap joint step 540 facing the adapter frame 200.
[0055] With reference to the accompanying drawings Figure 3In one of the embodiments, the abutting side plate 420 comprises a first abutting side plate 423, a second abutting side plate 424 and a connecting inclined plate 425, the first clamping part 421 is arranged on the first abutting side plate 423, the second abutting side plate 424 is connected with the connecting flange 410 in an L shape, and opposite ends of the connecting inclined plate 425 are connected with the first abutting side plate 423 and the second abutting side plate 424 respectively.
[0056] By using the above technical scheme, the abutting side plate 420 composed of the first abutting side plate 423, the second abutting side plate 424 and the connecting inclined plate 425 can avoid the structure protruding below the adapter frame 200, so as to ensure that the first abutting side plate 423 can be closely attached to the adapter frame 200.
[0057] Reference is made to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 , the accompanying drawings Figure 3 The installation process of the motor 10 can refer to the following: first, in the case that the abutting side plate 420 and the adapter frame 200 abut each other, the first screw 610 is used to penetrate the connecting flange 410 into the frame 100; second, the motor slot for the output end of the motor 10 to enter the adapter frame 200 is milled on the motor beam 500 and the adapter frame 200, the motor 10 is placed in the accommodation cavity 510, the buckle 422 is inserted into the buckle slot 531, and finally the second screw 620 is used to penetrate the motor beam 500 to the frame 100, so as to complete the installation of the motor 10.
[0058] The utility model provides a kind of casement window, including the motor installation structure of any one of the electric window described above.
[0059] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the described embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0060] The above is only some embodiments of the utility model. For ordinary skilled persons in the art, without departing from the creative concept of the utility model, a number of modifications and improvements can be made, which are within the protection scope of the utility model.
Claims
1. A motor mounting structure for an electric window, characterized in that: include: border(100); An adapter frame (200) is provided on the frame (100); A window sash (300) is provided at one end of the adapter frame (200) away from the frame (100); A mounting plate (400) comprising a connecting rib (410) and an abutting side plate (420), wherein the connecting rib (410) is used to connect to the frame (100), and the abutting side plate (420) is used to abut against the adapter frame (200), and a first engaging portion (421) is provided on a side of the abutting side plate (420) facing away from the adapter frame (200); The motor beam (500) is provided with a receiving cavity (510) for placing the power supply (10), and one end of the motor beam (500) facing the frame (100) is provided with a supporting foot (520) and a second engaging portion (530), wherein the supporting foot (520) is used to support the side of the motor beam (500) away from the adapter frame (200), and the second engaging portion (530) can be engaged with the first engaging portion (421) so that the abutting side plate (420) can support the side of the motor beam (500) close to the adapter frame (200), and the motor beam (500) can respectively abut against the adapter frame (200) and the window sash (300).
2. The motor mounting structure for an electric window according to claim 1, characterized in that: The adapter frame (200) is provided with a first overlapping step (210), the first overlapping step (210) being provided on a side of the adapter frame (200) facing away from the motor beam (500), and the first overlapping step (210) being used to overlap with the window sash (300); the window sash (300) is provided with a second overlapping step (310), the second overlapping step (310) being provided on a side of the window sash (300) facing the motor beam (500), and the second overlapping step (310) being used to overlap with the adapter frame (200).
3. The motor mounting structure for an electric window according to claim 2, characterized in that: A first adhesive strip (320) is provided between the first overlapping step (210) and the window sash (300), and the first adhesive strip (320) is used to close the gap between the first overlapping step (210) and the window sash (300); a second adhesive strip (220) is provided between the second overlapping step (310) and the adapter frame (200), and the second adhesive strip (220) is used to close the gap between the second overlapping step (310) and the adapter frame (200).
4. The motor mounting structure for an electric window according to claim 1, characterized in that: It also includes a first screw (610) and a second screw (620), wherein the first screw (610) is capable of penetrating the connecting rib (410) to the frame (100), and the second screw (620) is used to penetrate the motor beam (500) to the frame (100).
5. The motor mounting structure for an electric window according to claim 1, characterized in that: The supporting leg (520) comprises a lower retaining edge (521) and a supporting edge (522), the supporting edge (522) and the lower retaining edge (521) being connected in an L-shape, and the lower retaining edge (521) is provided on a side of the supporting edge (522) facing the adapter frame (200), and the supporting edge (522) is connected to the motor beam (500).
6. The motor mounting structure for an electric window according to claim 1, characterized in that: The first engaging portion (421) is one of the buckle (422) and the buckle slot (531), and the second engaging portion (530) is the other of the buckle (422) and the buckle slot (531).
7. The motor mounting structure for an electric window according to claim 1, characterized in that: It also includes a gauze fan (700), the gauze fan (700) being arranged on a side of the motor crossbeam (500) away from the frame (100), and a gauze fan overlapping step (540) being provided at one end of the motor crossbeam (500) away from the frame (100), the gauze fan overlapping step (540) being used to overlap with the gauze fan (700).
8. The motor mounting structure for an electric window according to claim 7, characterized in that: An overlapping rubber strip (710) is further provided between the gauze fan (700) and the gauze fan overlapping step (540), and the overlapping rubber strip (710) is used to close the gap between the gauze fan (700) and the gauze fan overlapping step (540).
9. The motor mounting structure for an electric window according to claim 1, characterized in that: The abutting side plate (420) comprises a first abutting side plate (423), a second abutting side plate (424) and a connecting inclined plate (425); the first engaging portion (421) is provided on the first abutting side plate (423); the second abutting side plate (424) is connected to the connecting retaining edge (410) in an L-shape; and opposite ends of the connecting inclined plate (425) are respectively connected to the first abutting side plate (423) and the second abutting side plate (424).
10. An outward-opening window, characterized in that: A motor mounting structure for an electric window comprising the structure described in any one of claims 1 to 9.
Citation Information
Patent Citations
Electric horizontal sliding window capable of ventilating all around
CN209637507U