Limiting device for adjusting angle of shielding door of shielding chamber of darkroom
By combining guide rods and limit blocks, the problem of fixed and difficult-to-adjust angle of the platform screen door is solved, achieving flexible angle control and safe opening limits, thus avoiding damage to the platform screen door.
Patent Information
- Application Number
- CN202423107740.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing platform screen doors lack flexible limiting devices, resulting in a fixed opening angle that is difficult to adjust and is easily damaged by collisions.
The system employs a combination structure of guide rods, limit blocks, door leaf fixing components, and door frame fixing components. The limit blocks are adjustable and fixed through adjustment grooves and positioning grooves, thereby controlling the extreme positions of the door leaf.
It enables flexible adjustment of the platform screen door angle, avoids damage caused by collisions, and improves ease of use and safety.
Smart Images
Figure CN223593963U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of limiting the angle of shielding doors, and in particular to a limiting device for adjusting the angle of shielding doors in anechoic chambers. Background Technology
[0002] With the development of technology, more and more electronic products need to be tested in electromagnetic compatibility anechoic chambers or other types of shielded rooms with shielding effects. This avoids interference with the outside world or prevents external interference with the test. Shielded doors, as one of the most important means of isolating signals between internal and external spaces, are increasingly being used in anechoic chambers or shielded rooms. In addition to demanding basic shielding effectiveness, more and more users are paying attention to the practical functions of shielded doors. Early shielded doors lacked limiting devices, which meant that if personnel opened the door manually with excessive force, the door panels would hit surrounding building walls or columns, causing serious damage to the door's appearance or even deformation, thus reducing its shielding effectiveness. Therefore, it is necessary to limit the opening angle of shielded doors during installation.
[0003] Currently, the industry standard for limiting the opening angle of platform screen doors is to first open the door to a certain angle, then drill a hole in the concrete floor at that location to install a fixed baffle to control the door's opening angle. This method results in a fixed opening angle, making it inconvenient to change the position; to change the position, the fixed baffle must be removed and reinstalled at a different angle, which damages the floor. This method is no longer feasible when the opening angle needs to be adjusted frequently. Utility Model Content
[0004] The purpose of this application is to provide a limiting device for adjusting the angle of the shielding door of an anechoic chamber, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides a limiting device for adjusting the angle of the shielding door of an anechoic chamber, employing the following technical solution:
[0006] A limiting device for adjusting the angle of a shielding door in an anechoic chamber includes a guide rod, a limiting block, a door leaf fixing component, a door frame fixing component, and a pin. The door leaf fixing component is installed on the top of the door leaf, and the door frame fixing component is installed on the door frame. One end of the guide rod is rotatably connected to the door frame fixing component via the pin. A through groove is vertically formed in the middle of the guide rod along its length. The door leaf fixing component is movably disposed in the through groove. The limiting block is adjustablely fixed in the guide rod. The door leaf fixing component is disposed between the limiting block and the door frame fixing component, and the door leaf fixing component can abut against the limiting block.
[0007] Preferably, the guide rod is also provided with an adjustment groove perpendicular to the through groove, and a plurality of positioning grooves are evenly provided at the bottom of the adjustment groove, and the limiting block can be matched and set in the positioning groove.
[0008] By adopting the above technical solution, when it is necessary to adjust the position of the limiting block, simply lift the limiting block upwards to remove it from the positioning groove, then move it to the appropriate position in the adjustment groove, and then put it back into the corresponding positioning groove. Under the action of the limiting block's own gravity, it can stay in the corresponding positioning groove and will not move, making the adjustment relatively simple.
[0009] The top edge of the positioning groove has a chamfer.
[0010] Preferably, in order to limit the position of the limiting block, the limiting block has downwardly extending anti-detachment protrusions on both sides.
[0011] Preferably, the top of the limiting block has a lifting rod. By providing the lifting rod, the user can easily pull the limiting block into the adjustment groove and then adjust the position of the limiting block, which is more convenient to use.
[0012] In summary, this application includes at least one of the following beneficial technical effects: the limiting device for adjusting the angle of the shielding door of the anechoic chamber is simple in structure and easy to use, and users can adjust the maximum opening angle of the door at any time according to their needs; when the door reaches the limit position, the limit position of the door is well controlled due to the existence of the limiting device, avoiding damage to the door leaf from hitting other things. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0014] Figure 2 These are schematic diagrams of the structure from different perspectives of embodiments of this application.
[0015] Explanation of reference numerals in the attached drawings: 1. Guide rod; 11. Through groove; 12. Adjustment groove; 121. Positioning groove; 2. Limiting block; 21. Lifting rod; 22. Anti-detachment protrusion; 3. Door leaf fixing component; 4. Door frame fixing component; 5. Pin. Detailed Implementation
[0016] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0017] This application discloses a limiting device for adjusting the angle of the shielding door of an anechoic chamber, referring to... Figure 1-2The device includes a guide rod 1, a limiting block 2, a door leaf fixing component 3, a door frame fixing component 4, and a pin 5. The door leaf fixing component 3 is installed on the top of the door leaf, and the door frame fixing component 4 is installed on the door frame. One end of the guide rod 1 is rotatably connected to the door frame fixing component 4 via the pin 5. A through groove 11 is vertically opened in the middle of the guide rod 1 along its length. The door leaf fixing component 3 is movably disposed in the through groove 11. The limiting block 2 is adjustablely fixed in the guide rod 1. The door leaf fixing component 3 is disposed between the limiting block 2 and the door frame fixing component 4, and the door leaf fixing component 3 can abut against the limiting block 2.
[0018] Reference Figure 1-2 The guide rod 1 is also provided with an adjustment groove 12 perpendicular to the through groove 11. Several positioning grooves 121 are evenly provided at the bottom of the adjustment groove 12. The limiting block 2 can be matched and set in the positioning groove 121. The top edge of the positioning groove 121 has a chamfer (not shown in the figure). The limiting block 2 has downward extending anti-detachment protrusions 22 on both sides.
[0019] When the position of the limiting block 2 needs to be adjusted, simply lift the limiting block 2 upwards to disengage it from the positioning groove 121, then move it to the appropriate position in the adjustment groove 12, and then put it back into the corresponding positioning groove 121. Under the action of the limiting block 2's own gravity, it can stay in the corresponding positioning groove 121 and will not move, making the adjustment relatively simple.
[0020] Reference Figure 1 The top of the limiting block 2 has a lifting rod 21. By setting the lifting rod 21, the user can easily pull the limiting block 2 into the adjustment groove 12 and then adjust the position of the limiting block 2, which is more convenient to use.
[0021] The implementation principle of a limiting device for adjusting the angle of the shielding door of an anechoic chamber according to an embodiment of this application is as follows:
[0022] During installation, the door leaf fixing component 3 is fixed to the top of the door leaf, and the door frame fixing component 4 is fixed to the door frame. The door leaf fixing component 3 is movably set inside the guide rod 1. By adjusting the position of the limit block 2 left and right, that is, the distance between the limit block 2 and the door frame fixing component 4, the extreme position of the door leaf fixing component 3 is limited. The larger the extreme position that the door leaf fixing component 3 can reach and the farther away it is from the door frame fixing component 4, the larger the opening angle of the door. Users can adjust the position of the limit block 2 according to their actual needs to adjust the maximum opening angle of the door, which is quite convenient to use.
[0023] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A stop device for adjusting the angle of a darkroom shield door, characterized by: The utility model relates to a door page fixing device, including guide rod (1), limit block (2), door page fixed part (3), door frame fixed part (4) and pin shaft (5), door page fixed part (3) is installed at the top of door page, door frame fixed part (4) is installed on the door frame, one end of guide rod (1) is rotatably connected on door frame fixed part (4) through pin shaft (5), the middle part of guide rod (1) is vertically through and is set up with through groove (11) along the length direction, door page fixed part (3) is movably arranged in through groove (11), limit block (2) can be adjusted and fixed in guide rod (1), door page fixed part (3) is arranged between limit block (2) and door frame fixed part (4), and door page fixed part (3) can abut with limit block (2).
2. The stop device for adjusting the angle of the shield door of the shield room of the darkroom according to claim 1, characterized in that: The utility model relates to a door page fixing device, including guide rod (1), limit block (2), door page fixed part (3), door frame fixed part (4) and pin shaft (5), door page fixed part (3) is installed at the top of door page, door frame fixed part (4) is installed on the door frame, one end of guide rod (1) is rotatably connected on door frame fixed part (4) through pin shaft (5), the middle part of guide rod (1) is vertically through and is set up with through groove (11) along the length direction, door page fixed part (3) is movably arranged in through groove (11), limit block (2) can be adjusted and fixed in guide rod (1), door page fixed part (3) is arranged between limit block (2) and door frame fixed part (4), and door page fixed part (3) can abut with limit block (2).
3. The stop device for adjusting the angle of the shield door of the shield room of the darkroom according to claim 2, characterized in that: The top edge of the positioning groove (121) has a chamfer.
4. The stop device for adjusting the angle of the shield door of the shield room of the darkroom according to claim 3, characterized in that: The limit block (2) has downwardly extending anti-disengagement protrusions (22) on both sides.
5. The stop device for adjusting the angle of the shield door of the shield room of the darkroom according to claim 4, characterized in that: The limit block (2) has a pull rod (21) on the top.