Pet door with adjustable installation width
By installing adjustable fixed frames and adjustment devices on both sides of the pet door frame, the problems of inconvenient installation and complicated replacement of pet doors are solved, enabling rapid width adjustment and installation to meet the needs of different window sizes.
Patent Information
- Application Number
- CN202520650073.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-08
AI Technical Summary
The fixed installation dimensions of existing pet doors make installation inconvenient and require recutting holes when replacing them, which is complicated and costly.
An adjustable-width pet door was designed. By setting adjustable fixed frames and adjustment devices on both sides of the door frame, and using a combination of support rods and springs, the width of the pet door can be adjusted and it can be installed quickly.
It enables quick disassembly and reinstallation of pet doors, reducing damage to the original structure, saving time and costs, and adapting to the needs of different window sizes.
Smart Images

Figure CN223975063U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pet door, and more particularly to a pet door with an adjustable installation width. Background Technology
[0002] Pet doors are products designed to allow pets to enter and exit easily when indoor doors and windows are closed. Most pet doors on the market are of fixed size. During installation, the dimensions of the pet door are measured, and corresponding holes are cut into the door or window before the pet door is installed. Since not all users have the necessary skills, pet doors often become loose after installation. In addition, when a pet door needs to be replaced, the old and new pet doors are different sizes, which requires cutting the holes again, which is very inconvenient. Summary of the Invention
[0003] In order to overcome the shortcomings of the prior art, this utility model provides a pet door with an adjustable installation width.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] An adjustable-width pet door includes a door frame, a movable door hinged to the upper side of the door frame, a switch knob for adjusting the opening direction of the movable door installed on the lower side of the door frame, and horizontally adjustable fixed frames installed on both sides of the door frame.
[0006] The door frame has extension portions on both sides, and the fixed frame has a first insertion port and a second insertion port on both sides respectively. The first insertion port is inserted into the side of the extension portion, and the second insertion port is inserted into the inside of the door or window.
[0007] The upper and lower ends of the extension are equipped with adjustment devices for adjusting the position of the fixed frame. The adjustment device includes a housing, and a support rod with a spring-applied thrust is installed inside the housing. The end of the support rod abuts against the fixed frame.
[0008] One end of the support rod is fitted with a limit ring, one end of the spring abuts against the limit ring, and the other end abuts against the inner wall of the housing.
[0009] An adjustment seat is provided at one end of the housing away from the fixed frame. The support rod passes through the adjustment seat. The adjustment seat is provided with a threaded hole. An adjustment knob is threaded into the threaded hole. An insert shaft is installed on the adjustment knob, passing through the threaded hole. The side wall of the insert shaft is provided with a notch corresponding to the support rod. The notch abuts against the side wall of the support rod.
[0010] The support rod has a first annular groove corresponding to the notch. When the first annular groove is aligned with the notch, a channel is formed for the insertion shaft to pass through.
[0011] The switch knob is located on the inner side of the movable door and is provided with a symmetrical first limiting part and a second limiting part. The switch knob is located on the outer side of the movable door and is provided with a third limiting part. One side of the third limiting part is located between the first limiting part and the second limiting part, and the other side of the third limiting part is aligned with the first limiting part.
[0012] The edges of the movable door are provided with insulating cotton, and the side walls of the door frame are provided with flexible protrusions corresponding to the insulating cotton.
[0013] The beneficial effects of this utility model are as follows: A movable door is hinged to the upper side of the door frame, and an adjustable switch knob for the opening direction of the movable door is installed on the lower side of the door frame. Laterally adjustable fixed frames are installed on both sides of the door frame. By adjusting the position of the fixed frames, the overall width of the pet door can be adjusted. During use, if adjustments to the pet door are needed, such as changing the installation position or replacing it with a new pet door, the adjustable width design makes operation more convenient. The pet door can be easily removed from its original installation position, and reinstalled after adjusting the width according to new needs. This is especially beneficial when replacing the pet door with a window of a different width, allowing for direct installation, saving time and costs, and reducing damage to the original structure. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a structural diagram of the present invention;
[0016] Figure 2 This is an exploded view of the regulating device;
[0017] Figure 3 This is a schematic diagram of the adjustment seat;
[0018] Figure 4 This is a structural diagram of a fixed frame;
[0019] Figure 5 It is a structural diagram of the door frame;
[0020] Figure 6 This is a structural diagram of the switch knob. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0022] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.
[0023] The following describes some embodiments of the present invention with reference to the accompanying drawings.
[0024] Reference Figure 1-6 An adjustable-width pet door includes a door frame 1, a movable door 2 hinged to the upper side of the door frame 1, and a switch knob 3 for adjusting the opening direction of the movable door 2 installed on the lower side of the door frame 1. Laterally adjustable fixed frames 4 are installed on both sides of the door frame 1. By adjusting the position of the fixed frames 4, the overall width of the pet door can be adjusted. During use, if adjustments to the pet door are needed, such as changing the installation position or replacing it with a new pet door, the adjustable-width design makes operation more convenient. The pet door can be easily removed from its original installation position, and reinstalled after adjusting the width according to new needs. This is especially useful when replacing the door with a window of a different width, allowing for direct installation, saving time and costs, and reducing damage to the original structure.
[0025] The door frame 1 has extension portions 5 on both sides, and the fixed frame 4 has a first insertion port 6 and a second insertion port 7 on both sides respectively. The first insertion port 6 is inserted into the side of the extension portion 5, and the depth of the first insertion port 6 is the adjustment dimension of the fixed frame 4. The second insertion port 7 is inserted into the inside of the door / window. The upper and lower ends of the extension portion 5 are equipped with adjustment devices 8 for adjusting the position of the fixed frame 4. The adjustment device 8 includes a housing 9, and a support rod 11 with a pushing force applied by a spring 10 is installed inside the housing 9. The end of the support rod 11 abuts against the fixed frame 4. One end of the spring 10 is fitted with a limiting ring 12. One end of the spring 10 abuts against the limiting ring 12, and the other end abuts against the inner wall of the housing 9. An adjusting seat 13 is provided at the end of the housing 9 away from the fixing frame 4. The support rod 11 passes through the adjusting seat 13. A threaded hole 14 is provided on the adjusting seat 13. An adjusting knob 15 is threaded into the threaded hole 14. An insert shaft 16 is installed on the adjusting knob 15, passing through the threaded hole 14. A notch 17 is provided on the side wall of the insert shaft 16 corresponding to the support rod 11. The notch 17 abuts against the side wall of the support rod 11.
[0026] The size of the extension part 5 can be selected according to different usage scenarios. Once selected, the extension part 5 is fixed and cannot be adjusted. If adjustment is required, the extension part 5 needs to be replaced. The extension part 5 consists of a profile frame and a baffle located in the middle of the profile frame. The profile frame is fixed to the door frame 1 by screws, buckles, etc. The baffle can be made of a transparent material, such as acrylic sheet, which can be used in window situations to reduce the light-blocking area of the pet door.
[0027] When adjusting the width of the pet door, directly push the fixed frame 4 to slide it relative to the extension part 5. The support rod 11 is pushed, and the spring 10 is further compressed. At this time, by turning the adjustment knob 15, the insertion shaft 16 moves, and the notch 17 moves synchronously. The notch 17 presses against the support rod 11. The friction between the notch 17 and the support rod 11 is greater than the return force of the spring 10, and the support rod 11 is fixed. After installation, turn the adjustment knob 15 in the opposite direction, and the notch 17 moves in the opposite direction. The friction between the notch 17 and the support rod 11 gradually decreases until the friction is less than the return force of the spring 10. The spring 10 extends and returns to its original position. Through the support rod 11, the fixed frame 4 is pushed outward until the second insertion port 7 abuts against the inside of the door or window, thus completing the installation.
[0028] The support rod 11 has a first annular groove 18 corresponding to the notch 17. When the first annular groove 18 is aligned with the notch 17, a channel is formed for the insertion shaft 16 to pass through. When installing the insertion shaft 16, the support rod 11 needs to be pushed so that the first annular groove 18 is aligned with the notch 17 to form a circular hole-shaped channel. At this time, the insertion shaft 16 can be inserted into the channel. When disassembling the insertion shaft 16, the support rod 11 also needs to be pushed so that the first annular groove 18 is aligned with the notch 17.
[0029] When the first annular groove 18 is misaligned with the notch 17, a portion of the support rod 11 can be seen when viewed from the axis of the channel (e.g., Figure 3 As shown in A).
[0030] The switch knob 3 is located on the inner side of the movable door 2 and is provided with symmetrical first limiting parts 19 and second limiting parts 20. The switch knob 3 is located on the outer side of the movable door 2 and is provided with a third limiting part 21. One side of the third limiting part 21 is located between the first limiting part 19 and the second limiting part 20, and the other side of the third limiting part 21 is aligned with the first limiting part 19. By turning the switch knob 3, the first limiting part 19, the second limiting part 20, or the third limiting part 21 can be turned upwards. When the first limiting part 19 is in the upper position, the part of the third limiting part 21 aligned with the first limiting part 19 is also in the upper position. At this time, the inner and outer sides of the movable door 2 are restricted by the first limiting part 19 and the third limiting part 21, respectively. The movable door 2 cannot be opened; when the second limiting part 20 is at the top, the inner side of the movable door 2 is restricted by the second limiting part 20, and the outer side of the movable door 2 is unrestricted. At this time, the movable door 2 can be opened outward; when the part between the first limiting part 19 and the second limiting part 20 is at the top, the part of the third limiting part 21 between the first limiting part 19 and the second limiting part 20 is at the top, the outer side of the movable door 2 is restricted by the third limiting part 21, and the inner side of the movable door 2 is unrestricted. At this time, the movable door 2 can be opened inward; when the first limiting part 19, the second limiting part 20 and the third limiting part 21 are not at the top, the movable door 2 is unrestricted inside and out, and both the inner and outer sides of the movable door 2 can be opened.
[0031] The edge of the movable door 2 is provided with insulating cotton, and the side wall of the door frame 1 is provided with flexible protrusions 22 corresponding to the insulating cotton. The insulating cotton is used to fill the gap between the door frame 1 and the movable door 2 to prevent cold outdoor air from entering the room through the gap. It can be used in cold regions. The width of the flexible protrusions 22 is smaller than the width of the door frame 1, which can reduce the contact area between the insulating cotton and the door frame 1 and reduce the resistance to opening the movable door 2.
[0032] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0033] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0034] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A pet door with adjustable installation width, comprising a door frame (1), characterized in that The upper side of the door frame (1) is hinged with a movable door (2), the lower side of the door frame (1) is provided with a switch knob (3) for adjusting the opening direction of the movable door (2), and the two sides of the door frame (1) are provided with a laterally adjustable fixed frame (4); The two sides of the door frame (1) are provided with an extension part (5), the two sides of the fixed frame (4) are provided with a first insertion port (6) and a second insertion port (7) respectively, the first insertion port (6) is inserted in the side of the extension part (5), and the second insertion port (7) is inserted in the inner side of the door and window; The upper and lower ends of the extension part (5) are provided with an adjusting device (8) for adjusting the position of the fixed frame (4), and the adjusting device (8) comprises a shell (9), a supporting rod (11) is arranged in the shell (9) and is subjected to a pushing force of a spring (10), and the end of the supporting rod (11) abuts against the fixed frame (4).
2. The adjustable installation width pet door according to claim 1, wherein One end of the supporting rod (11) is provided with a limiting ring (12), one end of the spring (10) abuts against the limiting ring (12), and the other end abuts against the inner wall of the shell (9).
3. The adjustable installation width pet gate of claim 1, wherein The end of the shell (9) away from the fixed frame (4) is provided with an adjusting seat (13), the supporting rod (11) penetrates through the adjusting seat (13), the adjusting seat (13) is provided with a threaded hole (14), the threaded hole (14) is screw-mounted with an adjusting knob (15), the adjusting knob (15) is provided with an insertion shaft (16) penetrating through the threaded hole (14), the side wall of the insertion shaft (16) is provided with a notch (17) corresponding to the supporting rod (11), and the notch (17) abuts against the side wall of the supporting rod (11).
4. The pet gate with adjustable installation width according to claim 3, characterized in that The supporting rod (11) is provided with a first annular groove (18) corresponding to the notch (17), and when the first annular groove (18) is aligned with the notch (17), a channel for the insertion shaft (16) to pass through is formed.
5. The adjustable installation width pet gate of claim 1, wherein The switch knob (3) is provided with symmetrical first and second limiting portions (19) and (20) on the inner side of the movable door (2), and is provided with a third limiting portion (21) on the outer side of the movable door (2), one side of the third limiting portion (21) is located between the first and second limiting portions (19) and (20), and the other side of the third limiting portion (21) is aligned with the first limiting portion (19).
6. The adjustable installation width pet gate of claim 1, wherein The edge of the movable door (2) is provided with warm cotton, and the side wall of the door frame (1) is provided with a flexible protrusion (22) corresponding to the warm cotton.