Multi-stage linkage retractable mouse-proof device for door frame
The multi-level linkage telescopic rodent barrier solves the problems of time-consuming customization, resource waste, and adaptability of existing rodent barriers, and achieves convenient telescopic adjustment and stable positioning to meet the needs of users of different sizes and heights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-14
AI Technical Summary
Existing rodent-blocking devices suffer from problems such as time-consuming and labor-intensive customization, space occupation, incompatibility with users of different heights, inability to balance temporary passage and long-term rodent prevention, and waste of resources.
Design a multi-stage linkage telescopic rodent-blocking device for door frames. Through the cooperation of the hanging rail frame and pulley block of the primary frame, telescopic frame and final frame, combined with the expansion mechanism, linkage rope and rotating column, telescopic adjustment and stable positioning can be achieved to adapt to different door frame sizes and user heights.
It achieves convenient and stable telescopic adjustment, meets the needs of temporary passage and rodent prevention, adapts to various door frame sizes, reduces resource waste, accommodates users of different heights, and is suitable for complete factory production.
Smart Images
Figure CN224482761U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rodent-blocking devices, specifically relating to a multi-stage linkage telescopic rodent-blocking device for door frames. Background Technology
[0002] Most rodent deterrent devices currently on the market are rigid, straight-plate structures, which have obvious limitations in their use.
[0003] 1. Rigid straight-plate rodent barriers are not readily available on the market and require technicians to measure and customize them, which is time-consuming, labor-intensive, and increases costs.
[0004] 2. When the rodent-blocking function is not needed (such as during personnel passage and material flow), the entire rodent-blocking board must be removed from the slot and placed in a location, which takes up space and poses a risk of falling and injuring people and damaging property. After personnel passage and material flow, the rodent-blocking board is often forgotten to be put back in place. Staff also find it troublesome and leave the rodent-blocking board out of reach, thus failing to meet both temporary passage needs and long-term rodent prevention requirements.
[0005] 3. Since the national standard for rodent barriers is no less than 60cm in height, and the height of different users varies significantly, a fixed height rodent barrier will make it difficult for some people to cross, thus affecting both passage efficiency and safety hazards.
[0006] 4. Rigid straight-plate rodent barriers are difficult to reuse due to their fixed size. Once removed, they become scrap, wasting resources.
[0007] Therefore, this utility model proposes a multi-stage linkage telescopic rodent-blocking device for door frames to solve the above-mentioned technical problems. Utility Model Content
[0008] The purpose of this invention is to provide a multi-stage linkage telescopic rodent-blocking device for door frames, which can solve the above-mentioned technical problems.
[0009] The specific technical solution adopted by this utility model is as follows:
[0010] This utility model provides a multi-stage linkage telescopic rodent-blocking device for door frames, including a primary frame and a final frame. A telescopic assembly is provided between the primary frame and the final frame. Both the primary frame and the telescopic assembly are provided with a hanging rail frame. Both the final frame and the telescopic assembly are provided with a pulley group that cooperates with the hanging rail frame. The telescopic assembly includes multiple telescopic frames that are nested in stages. The surface of each telescopic frame is provided with a support mechanism for pressing against the hanging rail frame. There are two sets of pulley groups, which are respectively installed on the surfaces of the telescopic frames and the final frame. The support mechanism is located between the pulley groups. The pulley groups are located on both sides within half the length of the surfaces of the telescopic frames and the final frame. Two of the multiple telescopic frames on both sides are respectively nested with the primary frame and the final frame.
[0011] The final stage frame and the telescopic assembly are each provided with an expansion mechanism in the odd-numbered telescopic frames. The expansion mechanism corresponds to two flexible plates, and the two flexible plates are symmetrically fixed in the rectangular holes opened on the side plates of the odd-numbered telescopic frames on the telescopic assembly.
[0012] Linkage ropes are provided inside the final stage frame and multiple telescopic frames. One end of one of the linkage ropes is connected to the expansion mechanism, and the other end is tied to the rotating column. The two sides of the other linkage ropes are respectively tied to two adjacent expansion mechanisms and locked in the locking slots opened on the bottom surface of the rotating column. The rotating column is rotatably installed on the side of the final stage frame away from the telescopic frames.
[0013] Preferably, the support mechanism is configured in two sets and symmetrically arranged between each set of pulleys. The support mechanism includes a base plate, a rotating shaft, and a tension spring. There are two rotating shafts located above the base plate. The two rotating shafts are movably sleeved on two ear plates, and both ear plates are fixed on the base plate. The base plate is installed on the surface of the telescopic frame or the final stage sleeve frame and is located between each set of pulleys. The two sides of the hanging rail frame are respectively provided with stop blocks. The stop blocks are sleeved on both sides inside the telescopic frame or the final stage sleeve frame and fastened with self-tapping screws.
[0014] Preferably, a first swing arm and a second swing arm are fixed at both ends of the rotating shaft, the included angle between the first swing arm and the second swing arm is set between 90-120°, a push wheel is rotatably installed at the free end of the first swing arm, and the push wheel abuts against the bottom surface of the hanging rail frame, a connecting shaft is provided between the two ear plates, and the connecting shaft is fixed at the free ends of the two second swing arms.
[0015] Preferably, the two sides of the tension spring are respectively sleeved on the connecting shaft and the fixed shaft, and the fixed shaft is fixed between the two ear plates.
[0016] Preferably, the expansion mechanism includes an inner frame, a sliding column, and two flip-top plates. The two flip-top plates are symmetrically arranged in two recesses, and the two recesses are respectively opened on the two ear plates of the inner frame. The inner frame is fitted into the opening on the side of the final stage sleeve away from the rotating column and is fixed by multiple self-tapping screws. The side of the recess on the inner frame is flush with the side of the final stage sleeve. The two flip-top plates correspond to the opposite sides of the two flexible plates. The length of the flexible plates is consistent with the interval length of each set of pulleys.
[0017] Preferably, the two flip-top plates are hinged to opposite sides of the push plate, and the push plate is set in the inner frame and fixed to one side of the sliding column. A push spring is provided between the push plate and the inner side of the inner frame, and the push spring is sleeved on the sliding column. A limiting nut located in the final sleeve is provided on the outer side of the inner frame, and the limiting nut is threadedly engaged with the threaded section provided on the other side of the sliding column.
[0018] Preferably, one side of one of the linkage ropes is tied to a collar, and the collar is axially welded parallel to the side of the sliding column, with the radius of the collar being smaller than the radius of the sliding column, and the other linkage ropes are tied to two adjacent collars.
[0019] Preferably, the bottom surfaces of the primary frame, multiple telescopic frames, and the final frame are on the same plane, and the bottom surfaces of the primary frame and the telescopic frames are set to be open. One side of the primary frame is set inside the mounting frame, and the mounting frame is installed on the side of the door frame wall by expansion bolts. The primary frame has bolt holes for fitting expansion bolts on the side away from the mounting frame. The free side of the final frame is inserted into the plug-in frame, and the plug-in frame is installed on the other side of the door frame wall.
[0020] The beneficial effects are:
[0021] 1. This utility model achieves telescopic sliding adjustment function through the cooperation of the hanging rail frame and pulley block of the primary frame, telescopic frame and final frame. It not only meets the retraction adjustment needs of frequent entry and exit on the side of the door frame, but also takes into account the dual functions of temporary passage and rodent prevention. At the same time, the telescopic frame and the final frame can achieve arbitrary positioning effect of extension displacement through the synergistic action of the expansion mechanism, linkage rope and rotating column. In addition, the support mechanism significantly enhances the stability of the structure after telescopic adjustment and improves its adjustment effect, thereby solving the rodent prevention problem before and after personnel passage and material flow.
[0022] 2. The device is assembled from various parts, meeting the requirements of complete factory production and adapting to market demands. A mass-produced unit can accommodate door frames of various sizes, eliminating the hassle of measurement and customization required in decoration.
[0023] 3. Through the cooperation structure of the hanging rail frame and pulley block of the primary frame, telescopic frame and final frame, it has a certain shrinkage range, can adapt to door frames of different sizes, and can be reused. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the explosion distribution structure of this utility model;
[0026] Figure 3 This is a schematic diagram of the support mechanism structure of this utility model;
[0027] Figure 4 This is a schematic diagram of the expansion mechanism of this utility model;
[0028] Figure 5 This is a schematic diagram of the rotating column structure of this utility model.
[0029] The attached diagram lists the components represented by each number as follows:
[0030] 1. Primary frame; 1a. Bolt hole; 2. Telescopic frame; 21. Flexible plate; 3. Final frame; 4. Hanging rail frame; 5. Pulley block; 6. Support mechanism; 61. Base plate; 62. Ear plate; 63. Rotating shaft; 64. First swing arm; 65. Pushing wheel; 66. Second swing arm; 67. Connecting shaft; 68. Tension spring; 69. Fixed shaft; 7. Stop block; 8. Expansion mechanism; 81. Embedded frame; 82. Sliding column; 83. Limit nut; 84. Collar; 85. Flat push plate; 86. Tilting top plate; 87. Notch; 88. Pushing spring; 9. Linkage rope; 10. Mounting frame; 11. Plug-in frame; 12. Rotating column; 12a. Clip opening. Detailed Implementation
[0031] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0032] like Figure 1-5As shown, a multi-stage linkage telescopic rodent-blocking device for door frames includes a primary frame 1 and a final frame 3. A telescopic assembly is provided between the primary frame 1 and the final frame 3. A hanging rail frame 4 is provided on both the primary frame 1 and the telescopic assembly. A pulley group 5 that cooperates with the hanging rail frame 4 is provided on both the final frame 3 and the telescopic assembly. The telescopic assembly includes multiple telescopic frames 2 that are connected in stages. A support mechanism 6 for pressing the hanging rail frame 4 is provided on the surface of the telescopic frame 2. There are two pulley groups 5, which are respectively installed on the surface of the telescopic frame 2 and the final frame 3. The support mechanism 6 is located between the pulley groups 5. The pulley groups 5 are located on both sides within half the length of the surface of the telescopic frame 2 and the final frame 3. Two of the multiple telescopic frames 2 on both sides are respectively connected and cooperated with the primary frame 1 and the final frame 3. The pulley group 5 adopts pulley components of existing technology or products. The height of the final frame 3 is not less than 60cm.
[0033] Both the final stage frame 3 and the odd-numbered telescopic frames 2 in the telescopic assembly are equipped with an expansion mechanism 8. The expansion mechanism 8 corresponds to two flexible plates 21, and the two flexible plates 21 are symmetrically fixed in the rectangular holes opened on the side plates of the odd-numbered telescopic frames 2 in the telescopic assembly.
[0034] Linkage ropes 9 are installed in the final stage frame 3 and multiple telescopic frames 2. One end of one linkage rope 9 is connected to the expansion mechanism 8, and the other end is tied to the rotating column 12. The two sides of the other linkage ropes 9 are tied to two adjacent expansion mechanisms 8 respectively, and are locked in the locking slots 12a opened on the bottom surface of the rotating column 12. The rotating column 12 is rotatably installed on the side of the final stage frame 3 away from the telescopic frames 2.
[0035] As an optional implementation, the support mechanism 6 is configured in two sets and symmetrically arranged between each set of pulley blocks 5. The support mechanism 6 includes a base plate 61, a rotating shaft 63, and a tension spring 68. There are two rotating shafts 63 located above the base plate 61. The two rotating shafts 63 are respectively movably sleeved on two ear plates 62. Both ear plates 62 are fixed on the base plate 61. The base plate 61 is installed on the surface of the telescopic frame 2 or the final stage sleeve 3 and is located between each set of pulley blocks 5. This allows the telescopic frame 2 and the final stage sleeve 3 to be in a sliding suspension state, which facilitates their telescopic adjustment. The two sides of the hanging rail frame 4 are respectively provided with stop blocks 7. The stop blocks 7 are sleeved on both sides of the telescopic frame 2 or the final stage sleeve 3 and fastened with self-tapping screws, thereby using the stop blocks 7 to limit the sliding movement of the pulley blocks 5 on both sides of the hanging rail frame 4.
[0036] See attached document Figure 3The two ends of the rotating shaft 63 are fixedly provided with a first swing arm 64 and a second swing arm 66. The included angle between the first swing arm 64 and the second swing arm 66 is set between 90-120°, preferably 120°. The free end of the first swing arm 64 is rotatably mounted with a push wheel 65, and the push wheel 65 abuts against the bottom surface of the hanging rail frame 4. A connecting shaft 67 is provided between the two ear plates 62, and the connecting shaft 67 is fixed to the free ends of the two second swing arms 66. In this way, the tension spring 68 can drive the connecting shaft 67 and the second swing arm 66 to move closer to the base plate 61, and simultaneously drive the first swing arm 64 to push the push wheel 65 upward, so that it abuts against the bottom surface of the hanging rail frame 4. In this way, the tensioning effect of the telescopic frame 2 and the hanging rail frame 4 or the final sleeve frame 3 and the hanging rail frame 4 can be guaranteed.
[0037] Furthermore, the two sides of the tension spring 68 are respectively sleeved on the connecting shaft 67 and the fixed shaft 69, and the fixed shaft 69 is fixed between the two ear plates 62, thereby providing a fixed support point for the tension spring 68 using the fixed shaft 69.
[0038] See attached document Figure 4 The expansion mechanism 8 includes an inner frame 81, a sliding column 82, and two flip-top plates 86. The two flip-top plates 86 are symmetrically arranged in two recesses 87, and the two recesses 87 are respectively opened on the two ear plates 62 of the inner frame 81. The inner frame 81 is fitted into the opening on the side away from the rotating column 12 of the final sleeve frame 3 and is fixed by multiple self-tapping screws. The side of the recess 87 on the inner frame 81 is flush with the side of the final sleeve frame 3. The two flip-top plates 86 correspond to the opposite sides of the two flexible plates 21. The length of the flexible plates 21 is set to be consistent with the interval length of each set of pulley groups 5, thereby achieving the effect of arbitrary positioning when the final sleeve frame 3 and the telescopic frame 2 extend smoothly.
[0039] Furthermore, the two flip-top plates 86 are hinged to opposite sides of the push plate 85, and the push plate 85 is set inside the inner frame 81 and fixed to one side of the sliding column 82. A push spring 88 is provided between the inner side of the push plate 85 and the inner side of the inner frame 81, and the push spring 88 is sleeved on the sliding column 82. A limiting nut 83 located in the final sleeve 3 is provided on the outer side of the inner frame 81. The limiting nut 83 is threadedly engaged with the threaded section on the other side of the sliding column 82. In this way, the push spring 88 can use moderate elasticity to push the push plate 85 to flip the two flip-top plates 86, so that the flip-top plates 86 abut against the flexible plate 21 to achieve frictional limiting. At the same time, relying on the characteristics of the flexible plate 21, it abuts against the inner side of the primary sleeve 1, thereby achieving synchronous frictional limiting of the telescopic frame 2 and the final sleeve 3.
[0040] See attached document Figure 2 and attached Figure 5One side of one of the linkage ropes 9 is tied to the collar 84, and the collar 84 is axially parallel to the side of the sliding column 82. The radius of the collar 84 is smaller than the radius of the sliding column 82. The other linkage ropes 9 are tied to two adjacent collars 84. This makes it easier to thread the limiting nut 83 through the collar 84 and connect it to the threaded section on the sliding column 82, thereby improving the ease of installation.
[0041] Furthermore, the bottom surfaces of the primary sleeve frame 1, multiple telescopic frames 2, and the final sleeve frame 3 are on the same plane, and the bottom surfaces of the primary sleeve frame 1 and the telescopic frames 2 are set to an open state. One side of the primary sleeve frame 1 is set inside the mounting frame 10, and the mounting frame 10 is installed inside the door frame by expansion bolts. The primary sleeve frame 1 has a bolt hole 1a for fitting expansion bolts on the side away from the mounting frame 10. The free side of the final sleeve frame 3 is inserted into the plug-in frame 11, and the plug-in frame 11 is installed on the other side inside the door frame, thereby forming a two-sided limiting installation state for the primary sleeve frame 1, improving the stability strength of the primary sleeve frame 1 after installation. Both the plug-in frame 11 and the mounting frame 10 are set to a notch shape.
[0042] Using the above structure, taking the three-stage example, the telescopic frame 2 is the first telescopic frame 2 fitted between the primary frame 1 and the final frame 3. Its two side plates are respectively provided with flexible plates 21 and expansion mechanisms 8 corresponding to the flexible plates 21. When it is necessary to adjust the height of the rodent-blocking device, rotating the rotating column 12 drives the linkage rope 9 to release the tension on the sliding column 82, so that the compressed push spring 88 causes the flat push plate 85 to push the two flipping top plates 86 to flip outward, so that the flipping top plates 86 are released from contact with the flexible plates 21 on the telescopic frame 2. At this time, the telescopic frame 2 and the final frame 3 can slide and extend in the hanging rail frame 4 with arbitrary length adjustment. At this time, the rodent-blocking device completes the length adjustment, and the tension spring 68 of the support mechanism 6 pulls the connecting shaft 67 to drive the second swing arm 66 to press down, so that the push wheel 65 of the first swing arm 64 presses up against the bottom surface of the hanging rail frame 4, forming a two-way clamping force to maintain a stable state. Thus, the telescopic frame 2 and the final frame 3 after extension and adjustment can adapt to the crossing needs of people of different heights and ensure the rodent-blocking effect.
[0043] After extension adjustment: loosen the rotating column 12, push spring 88 pushes the flat push plate 85 to reset, flip top plate 86 flips in the opposite direction to maintain a moderate pressing state with flexible plate 21, and at the same time the flexible plate 21 deforms and abuts against the inner side of primary sleeve frame 1, thereby relying on friction to synchronously achieve stable positioning of telescopic frame 2 and final sleeve frame 3, and achieve the positioning effect after adjustment.
[0044] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. This application is mainly used to protect mechanical devices. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, are implemented according to conventional methods in the field.
Claims
1. A multi-stage linkage telescopic rodent-proof device for door frames, characterized in that: The system includes a primary frame (1) and a final frame (3). A telescopic assembly is provided between the primary frame (1) and the final frame (3). A hanging rail frame (4) is provided on both the primary frame (1) and the telescopic assembly. A pulley group (5) that cooperates with the hanging rail frame (4) is provided on both the final frame (3) and the telescopic assembly. The telescopic assembly includes multiple telescopic frames (2) that are connected in stages. A support mechanism (6) for pressing the hanging rail frame (4) is provided on the surface of the telescopic frame (2). There are two pulley groups (5), which are respectively installed on the surface of the telescopic frame (2) and the final frame (3). The support mechanism (6) is located between the pulley groups (5). The pulley groups (5) are located on both sides within half the distance of the surface length of the telescopic frame (2) and the final frame (3). Two of the two sides of the multiple telescopic frames (2) are respectively connected to the primary frame (1) and the final frame (3). The final stage frame (3) and the odd-numbered telescopic frames (2) in the telescopic assembly are both provided with expansion mechanisms (8). The expansion mechanisms (8) correspond to the two flexible plates (21), and the two flexible plates (21) are symmetrically fixed in the rectangular holes opened on the side plates of the odd-numbered telescopic frames (2) in the telescopic assembly. Linkage ropes (9) are provided in the final stage frame (3) and multiple telescopic frames (2). One end of one of the linkage ropes (9) is connected to the expansion mechanism (8), and the other end is tied to the rotating column (12). The other linkage ropes (9) are tied to two adjacent expansion mechanisms (8) on both sides and are locked in the locking slot (12a) opened on the bottom surface of the rotating column (12). The rotating column (12) is rotatably installed on the side of the final stage frame (3) away from the telescopic frame (2).
2. The multi-stage linkage telescopic rodent-blocking device for door frames according to claim 1, characterized in that: The support mechanism (6) is set in two groups and symmetrically arranged between each group of pulleys (5). The support mechanism (6) includes a base plate (61), a rotating shaft (63) and a tension spring (68). The rotating shaft (63) is set in two and located above the base plate (61). The two rotating shafts (63) are respectively movably sleeved on two ear plates (62). The two ear plates (62) are fixed on the base plate (61). The base plate (61) is installed on the surface of the telescopic frame (2) or the final stage sleeve frame (3) and located between each group of pulleys (5). The two sides of the hanging rail frame (4) are respectively provided with a stop block (7). The stop block (7) is sleeved on both sides of the telescopic frame (2) or the final stage sleeve frame (3) and fastened by self-tapping screws.
3. A multi-stage linkage telescopic rodent-blocking device for door frames according to claim 2, characterized in that: The two ends of the rotating shaft (63) are fixedly provided with a first swing arm (64) and a second swing arm (66). The included angle between the first swing arm (64) and the second swing arm (66) is set between 90-120°. The free end of the first swing arm (64) is rotatably mounted with a push wheel (65), and the push wheel (65) abuts against the bottom surface of the hanging rail frame (4). A connecting shaft (67) is provided between the two ear plates (62), and the connecting shaft (67) is fixed at the free ends of the two second swing arms (66).
4. A multi-stage linkage telescopic rodent-blocking device for door frames according to claim 3, characterized in that: The tension spring (68) is sleeved on the connecting shaft (67) and the fixed shaft (69) on both sides respectively, and the fixed shaft (69) is fixed between the two ear plates (62).
5. A multi-stage linkage telescopic rodent-blocking device for door frames according to claim 4, characterized in that: The expansion mechanism (8) includes an inner frame (81), a sliding column (82) and two flip-top plates (86). The two flip-top plates (86) are symmetrically arranged in two recesses (87), and the two recesses (87) are respectively opened on the two ear plates (62) of the inner frame (81). The inner frame (81) is fitted into the opening on the side away from the rotating column (12) of the final stage sleeve frame (3) and fixed by multiple self-tapping screws. The side of the recess (87) on the inner frame (81) is flush with the side of the final stage sleeve frame (3). The two flip-top plates (86) correspond to the opposite sides of the two flexible plates (21). The length of the flexible plates (21) is consistent with the interval length of each set of pulleys (5).
6. A multi-stage linkage telescopic rodent-blocking device for door frames according to claim 5, characterized in that: The two flip-top plates (86) are hinged to each other on opposite sides of the push plate (85), and the push plate (85) is set in the inner frame (81) and fixed on one side of the sliding column (82). A push spring (88) is provided between the inner side of the push plate (85) and the inner side of the inner frame (81), and the push spring (88) is sleeved on the sliding column (82). A limiting nut (83) is provided on the outer side of the inner frame (81) in the final sleeve (3), and the limiting nut (83) is threadedly engaged with the threaded section provided on the other side of the sliding column (82).
7. A multi-stage linkage telescopic rodent-blocking device for door frames according to claim 6, characterized in that: One side of one of the linkage ropes (9) is tied to a collar (84), and the collar (84) is axially parallel to the side of the sliding column (82), and the radius of the collar (84) is smaller than the radius of the sliding column (82). The other linkage ropes (9) are tied to two adjacent collars (84).
8. A multi-stage linkage telescopic rodent-blocking device for door frames according to claim 7, characterized in that: The bottom surfaces of the primary frame (1), multiple telescopic frames (2) and the final frame (3) are on the same plane, and the bottom surfaces of the primary frame (1) and the telescopic frames (2) are set to open. One side of the primary frame (1) is set inside the mounting frame (10), and the mounting frame (10) is installed on the side of the door frame wall by expansion bolts. The primary frame (1) has a bolt hole (1a) for fitting expansion bolts on the side away from the mounting frame (10). The free side of the final frame (3) is inserted into the plug-in frame (11), and the plug-in frame (11) is installed on the other side of the door frame wall.