On-demand adjustable external protection device for windows and retrofit window
By designing a foldable outer lower extension plate and a split-locking assembly for window external protection devices, the problems of high cost and transportation difficulties in the renovation of doors and windows in old buildings have been solved. This has enabled mass production and simplified installation to adapt to complex environments, and improved heat insulation and sound insulation effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YADUN DOORS & WINDOWS TECHNOLOGY CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-14
Smart Images

Figure CN224496303U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of door and window technology, specifically relating to an adjustable external protective device for windows and a modified window. Background Technology
[0002] The doors and windows of old buildings are generally made of single-pane glass or inferior materials, which makes them cold in winter and hot in summer, increasing the energy consumption of air conditioning / heating. In addition, the gaps are large, the airtightness is insufficient, the gaps leak air, and the heat loss is serious, which does not meet modern energy-saving standards. The glass is not thick enough or the seal is not tight, making it difficult to block traffic and neighborhood noise, affecting the comfort of living.
[0003] Given the problems with the doors and windows of old buildings, it is necessary to renovate them. During the renovation process, due to the complex environment of the old building doors and windows and the influence of their own window sills or walls, the external protective devices fixed on the outside of the windows need to be customized one by one, which cannot be mass-produced, resulting in high costs. In addition, the waterproof devices are generally fixed to the outer window frame and need to be installed before leaving the factory, which makes the entire window frame bulky and difficult to transport. At the same time, the squeezing and vibration during transportation can easily cause deformation of the external protective devices. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of existing technology for retrofitting old doors and windows, which cannot be mass-produced and require custom-made waterproof devices, resulting in high costs. This invention provides a low-cost, adjustable external protective device and retrofitting window that can be adjusted as needed to adapt to complex situations in the retrofitting of old doors and windows.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] As a first aspect, a window-adjustable external protective device includes:
[0007] An outer lower extension plate is provided on the outer window frame; the outer lower extension plate includes an extension plate body and a plurality of break grooves arranged laterally on the extension plate body.
[0008] Furthermore, several of the aforementioned breakage grooves are equally spaced on the extension plate body.
[0009] Furthermore, the spacing between adjacent break grooves gradually decreases from top to bottom.
[0010] Furthermore, it also includes a locking assembly; the locking assembly includes a locking block fixedly disposed on the outside of the outer window frame and a locking member engaged with the locking block; the outer lower extension plate is fixedly connected to the locking member.
[0011] Furthermore, the engaging component includes an engaging body and an engaging cavity formed on one side of the engaging body;
[0012] The outer lower extension plate is fixedly disposed on the side of the engaging body away from the engaging cavity.
[0013] Furthermore, the engaging body includes:
[0014] The upper and lower locking plates are arranged in parallel.
[0015] At least one connecting plate is disposed between the upper locking plate and the lower locking plate for connecting the upper locking plate and the lower locking plate.
[0016] Furthermore, it also includes at least one anti-detachment component, which is disposed on the engagement surface of the engagement block and the engagement member;
[0017] The anti-detachment component includes:
[0018] The first serrated anti-detachment structure is provided on the upper or lower end face of the locking block;
[0019] The second sawtooth anti-detachment structure is disposed on the upper or lower inner wall of the engagement cavity; the first sawtooth anti-detachment structure and the second sawtooth anti-detachment structure are misaligned and fitted together.
[0020] Furthermore, the opening ends of the upper and lower locking plates are each provided with a first guide ramp; the locking block is correspondingly provided with a second guide ramp;
[0021] The first guide ramp and the second guide ramp provide guidance in combination.
[0022] Furthermore, the connection points between the connecting plate and the upper and lower locking plates are all provided with arc-shaped through grooves.
[0023] As a second aspect, a modified window includes an outer window frame, an inner window frame connected to the outer window frame via a connector, a window body disposed above the inner window frame and the outer window frame, an inner extension plate mounted on the inner window frame, and an adjustable external protective device for a window as described above mounted on the outer window frame.
[0024] The beneficial effects of this utility model of an adjustable external protective device for windows and a modified window are:
[0025] This utility model features an outer lower extension plate on the outer window frame, with several break grooves on the plate. The plate can be broken at appropriate locations within these grooves to accommodate varying length requirements, allowing for on-site adjustment of the extension plate length. This design is compatible with different building structures, significantly increasing the applicability of the external protective device. It meets the complex usage environments of older windows, eliminating the need for custom-made protective devices for each window and enabling mass production, thus reducing costs.
[0026] Meanwhile, this utility model connects the outer extension plate to the outer window frame through a snap-fit assembly. The snap-fit assembly is designed as a separate snap-fit component and snap-fit block installation method. On the one hand, during transportation, the snap-fit component and snap-fit block are independently detached and transported separately, which solves the problem of the window frame being transported as a whole in the prior art, which is inconvenient to transport and easily causes the outer protective device to be squeezed and deformed. On-site installation is convenient because the snap-fit component and snap-fit block are connected by snap-fit. Attached Figure Description
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0028] Figure 1 This is a schematic diagram of the external protective device in Embodiment 1 of this utility model.
[0029] Figure 2 This is a schematic diagram of the engaging state of the outer protective device in Embodiment 1 of this utility model.
[0030] Figure 3 This is a schematic diagram of the external protective device in the separated state in Embodiment 1 of this utility model.
[0031] Figure 4 This is a schematic diagram of the external protective device structure in another embodiment of the present utility model.
[0032] Figure 5 This is a schematic diagram of the modified window in Embodiment 2 of this utility model.
[0033] Figure 6 This is a cross-sectional view of the modified window and the old window frame in Embodiment 2 of this utility model.
[0034] In the diagram: 1. Inner window frame, 2. Sealing connector, 3. Outer window frame, 4. Window body, 5. Inner extension plate, 6. Outer protective device, 61. Locking block, 62. Locking component, 621. Locking body, 6211. Upper locking plate, 6212. Lower locking plate, 6213. Connecting plate, 6214. Arc-shaped through groove, 63. Outer lower extension plate, 631. Outer extension plate body, 632. Break groove, 622. Locking cavity, 623. Anti-detachment component, 6231. First sawtooth anti-detachment structure, 6232. Second sawtooth anti-detachment structure, 7. Filler, 8. Old window frame, 9. First guide ramp, 10. Second guide ramp. Detailed Implementation
[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0036] Example 1
[0037] like Figures 1-4 The present invention provides a specific embodiment of an adjustable external protective device for windows, comprising an outer lower extension plate 63 mounted on the outer window frame 3. The outer lower extension plate 63 includes an extension plate body 631 and several horizontally arranged break grooves 632 on the extension plate body 631. In use, the operator breaks the outer lower extension plate 63 at the appropriate position of the break groove 632 according to the specific window usage environment and the height restriction on the outside, to meet the complex conditions of old buildings.
[0038] As one implementation method, such as Figure 1 As shown, several break grooves 632 are equally spaced on the extension plate body 631.
[0039] As another implementation method, such as Figure 5 As shown, the spacing between adjacent break grooves 632 gradually decreases from top to bottom, and the probability of breakage increases as you go down. Therefore, in order to ensure that the size is just right with the size required by the environment, the spacing of the break grooves 632 near the bottom of the outer lower extension plate 63 is set shorter to increase the applicable range and also to ensure that the breakage size is as accurate as possible.
[0040] Specifically, this utility model provides an outer lower extension plate on the outer window frame, with several breaking grooves on the outer lower extension plate. According to the actual usage conditions, the outer lower extension plate can be broken at the corresponding breaking grooves at appropriate positions to meet the required length of different outer lower extension plates. This greatly increases the applicability of the outer protective device of this utility model, meets the complex usage environment of old windows, and eliminates the need to customize the outer protective device according to the usage environment of old windows. It can be mass-produced, reducing its cost.
[0041] like Figure 1 The outer protective device 6 in this embodiment also includes a locking assembly disposed on the outer side of the outer window frame 3. The outer lower extension plate 63 is connected to the outer window frame 3 through the locking assembly. The locking assembly includes a locking block 61 fixedly disposed on the outer side of the outer window frame and a locking member 62 engaged with the locking block 61. The locking member 62 includes a locking body 621 and a locking cavity 622 formed on one side of the locking body 621. The outer lower extension plate 63 is fixedly disposed on the side of the locking body 621 away from the locking cavity 622.
[0042] Specifically, such as Figures 1 to 4 As shown, the window external protective device 6 in this embodiment is configured as a separate component consisting of a locking member 62, a locking block 61, and an outer lower extension plate 63. During transportation, the locking member 62 and the locking block 61 are independently detached and transported separately, solving the problems of large volume, difficult transportation, and high cost associated with transporting the window frame as a whole in the prior art. On-site installation is convenient due to the locking connection between the locking member 62 and the locking block 61. Furthermore, this embodiment provides several breaking grooves 632 on the outer lower extension plate 63. Depending on the actual usage conditions, the outer lower extension plate 63 can be broken at appropriate positions corresponding to the breaking grooves 632 to meet different length requirements, greatly increasing the applicability of the external protective device 6 and meeting the complex usage environments of old windows. It eliminates the need for custom-made external protective devices 6 for each old window, allowing for mass production and reducing costs.
[0043] It should be further explained that the engaging body 621 in this embodiment includes: an upper engaging plate 6211 and a lower engaging plate 6212 arranged in parallel, and at least one connecting plate 6213. The connecting plate 6213 is disposed between the upper engaging plate 6211 and the lower engaging plate 6212 and is used to connect the upper engaging plate 6211 and the lower engaging plate 6212. In this embodiment, there is only one connecting plate 6213. An arc-shaped through groove 6214 is provided at the connection between the connecting plate 6213 and the upper engaging plate 6211 and the lower engaging plate 6212. The arc-shaped through groove 6214 at the connection between the connecting plate 6213 and the upper engaging plate 6211 and the lower engaging plate 6212 increases the opening degree of the upper engaging plate 6211 and the lower engaging plate 6212, making it easier for the engaging block 61 to enter the engaging cavity 622.
[0044] To ensure the stability of the engagement between the locking block 61 and the locking member 62, this embodiment further includes at least one anti-detachment component 622, which is disposed on the engagement surfaces of the locking block 61 and the locking member 62. Specifically, the anti-detachment component 622 includes a first serrated anti-detachment structure 6231 and a second serrated anti-detachment structure 6232 that cooperate with each other. The first serrated anti-detachment structure 6231 is disposed on the upper or lower end surface of the locking block 61; the second serrated anti-detachment structure 6232 is disposed on the upper or lower inner wall of the engagement cavity 622. The first serrated anti-detachment structure 6231 and the second serrated anti-detachment structure 6232 are misaligned. See [reference needed]. Figure 2 and Figure 3 .
[0045] In a preferred embodiment, a first serrated anti-detachment structure 6231 is provided on both the upper and lower end faces of the locking block 61. Simultaneously, a second serrated anti-detachment structure 6232, cooperating with the first serrated anti-detachment structure 6231, is provided on the lower end face of the upper locking plate 6211 and the upper end face of the lower locking plate 6212. This ensures the locking stability of the locking block 61 and the locking component 62, preventing loosening or detachment of the locking block 61 and the locking component 62 during prolonged use. This significantly increases the locking stability of the locking block 61 and the locking cavity 622, ensuring a long service life and high sealing performance for the modified window.
[0046] In this embodiment, when engaging the locking member 62 and the locking block 61, the locking cavity 622 on the locking member 62 is first aligned with the outer surface of the locking block 61. Then, the locking member 62 needs to be struck with external force to knock the locking block 61 into the locking cavity 622. To ensure that the force of the knocking is not too great, an arc-shaped through groove 6214 is provided at the connection between the connecting plate 6213 and the upper locking plate 6211 or / and the lower locking plate 6212. The arc-shaped through groove 6214 can increase the opening and closing angle of the upper locking plate 6211 and the lower locking plate 6212, thereby facilitating the entry of the locking block 61 into the locking cavity 622.
[0047] During the process of hammering the locking block 61 into the locking cavity 622, the length of the locking block 61 entering the locking cavity 622 can be limited according to the size of the outer windowsill of the modified window, so as to adapt to the renovation of old doors and windows with various outer windowsill widths.
[0048] Example 2
[0049] like Figure 5 and Figure 6As shown, based on the window adjustable external protective device 6 in Embodiment 1, this Embodiment 2 provides a modified window, including an outer window frame 3, an inner window frame 1 connected to the outer window frame 3 by a connector, a window body 4 disposed on the inner window frame 1 and the outer window frame 3, an inner extension plate 5 installed on the inner window frame 1, and a window adjustable external protective device 6 as in Embodiment 1 installed on the outer window frame 3.
[0050] In this embodiment, a downward-facing inner extension plate 5 is provided on the lower end face of the inner window frame 1. During installation, the inner extension plate 5 abuts against the upper end face of the indoor window sill. At the same time, an outer protective device 6 is provided on the lower end face of the outer window frame 3 for stable installation with the old window frame 8. The outer protective device 6 adopts a snap-fit connection method using a snap-fit block 61 and a snap-fit piece 62. It is only necessary to tap the outside of the snap-fit piece 62 to make the snap-fit block 61 and the snap-fit piece 62 snap into place. This connection method has high stability and is easy to install. During installation, the lower snap-fit plate 6212 of the outer protective device 6 is located on the outer window sill of the old building. The length of the snap-fit block 61 entering the snap-fit cavity 622 is adjusted according to the width of the outer window sill. The lower outer extension plate 63 of the outer protective device 6 extends to the outside of the outer wall and is sealed and secured between the old window frame 8 and the inner extension plate 5, and between the old window frame 8 and the snap-fit piece 62 by the filler 7. It is not necessary to remove the old window frame 8 as a whole, and there is no need to damage the wall structure, which simplifies the construction process and keeps the cost under control.
[0051] In a preferred embodiment, the locking block 61 has a weight-reducing cavity inside for weight reduction, see [link to relevant documentation]. Figure 5 This reduces the overall weight of the modified window. Of course, the locking block 61 can also be a solid structure. Here, we do not make an absolute limitation on the internal structure of the locking block 61.
[0052] like Figure 6 As shown, to enhance the sealing and stability between the inner extension plate 5 and the original old window frame 8, in this embodiment, at least one intermediate stabilizing buckle and one end stabilizing buckle are provided on the side of the inner extension plate 5 closest to the old window frame 8. Both the intermediate and end stabilizing buckles face the direction of the old window frame 8. The intermediate and end stabilizing buckles can be inserted into the filler 7, thereby improving the stability between the inner extension plate 5 and the old window frame 8. In this embodiment, the filler 7 is one of expanding foam, silicone sealant, or polysulfide sealant, and the specific choice can be made according to the application requirements.
[0053] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.
Claims
1. An adjustable external protective device for windows, characterized in that, include: An outer lower extension plate (63) is provided on the outer window frame (3); the outer lower extension plate (63) includes an extension plate body (631) and a plurality of break grooves (632) arranged laterally on the extension plate body (631).
2. The adjustable external protective device for windows according to claim 1, characterized in that, Several of the aforementioned break grooves (632) are equally spaced on the extension plate body (631).
3. The adjustable external protective device for windows according to claim 1, characterized in that: The spacing between adjacent break grooves (632) gradually decreases from top to bottom.
4. The adjustable external protective device for windows according to claim 1, characterized in that: It also includes a locking assembly; the locking assembly includes a locking block (61) fixedly disposed on the outside of the outer window frame (3) and a locking member (62) engaged with the locking block (61); the outer lower extension plate (63) is fixedly connected to the locking member (62).
5. The adjustable external protective device for windows according to claim 4, characterized in that: The engaging component (62) includes an engaging body (621) and an engaging cavity (622) formed on one side of the engaging body (621). The outer lower extension plate (63) is fixedly disposed on the side of the engaging body (621) away from the engaging cavity (622).
6. The adjustable external protective device for windows according to claim 5, characterized in that, The engaging body (621) includes: The upper locking plate (6211) and the lower locking plate (6212) are arranged in parallel. At least one connecting plate (6213) is disposed between the upper locking plate (6211) and the lower locking plate (6212) for connecting the upper locking plate (6211) and the lower locking plate (6212).
7. The adjustable external protective device for windows according to claim 5, characterized in that: It also includes at least one anti-detachment component (623), which is disposed on the engagement surface of the engagement block (61) and the engagement member (62); The anti-detachment component (623) includes: The first sawtooth anti-detachment structure (6231) is provided on the upper or lower end face of the locking block (61); The second sawtooth anti-detachment structure (6232) is disposed on the upper inner wall or lower inner wall of the engaging cavity (622); the first sawtooth anti-detachment structure (6231) and the second sawtooth anti-detachment structure (6232) are misaligned.
8. The adjustable external protective device for windows according to claim 6, characterized in that: The opening ends of the upper locking plate (6211) and the lower locking plate (6212) are both provided with a first guide ramp (9); the locking block (61) is correspondingly provided with a second guide ramp (10). The first guide ramp (9) and the second guide ramp (10) cooperate to guide each other.
9. A window-adjustable external protective device according to claim 6, characterized in that: Arc-shaped through grooves (6214) are provided at the connection points between the connecting plate (6213) and the upper locking plate (6211) and the lower locking plate (6212).
10. A modified window, characterized in that, The window includes an outer window frame (3), an inner window frame (1) connected to the outer window frame (3) by a connector, a window body (4) disposed above the inner window frame (1) and the outer window frame (3), an inner extension plate (5) installed on the inner window frame (1), and an adjustable external protective device (6) for a window as described in any one of claims 1-9 installed on the outer window frame (3).