Integrated automatic lifting zero-threshold shielding door

Abstract

The invention discloses an integrated automatic lifting zero-threshold shielding door, and relates to the technical field of electromagnetic shielding, the integrated automatic lifting zero-threshold shielding door comprises an upper door frame, a lower door frame assembly, a door leaf system I, a door leaf system II and a moving threshold system, and the lower door frame assembly is correspondingly connected with the upper door frame; the first door leaf system and the second door leaf system are installed at the two ends of the upper door frame correspondingly. The moving doorsill system is installed on the lower door frame assembly and located on the same side as the first door leaf system and the second door leaf system. Adjustable shielding of the bottom of the shielding door is achieved through cooperation of the moving threshold system, the first door leaf system and the second door leaf system, the moving threshold system is arranged on the shielding door, the moving threshold system and the shielding door are integrated, the integrated shielding door is more convenient and easier to install and debug on site, the occupied space is reduced, and the cost is reduced. The space utilization rate of the anechoic chamber is improved, and the integral carrying design is further adopted, so that the transportation and carrying times are reduced, the operation is easier, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic shielding, and in particular to an integrated automatic lifting zero-threshold shielding door. Background Art

[0002] With the continuous development of electronic technology and the increasing demand for electromagnetic compatibility testing, the technology of shielding doors in anechoic chambers is also constantly improving. When conducting electromagnetic compatibility tests on large electronic products, the shielding door is the largest opening in the anechoic chamber. When the shielding door is open, the DUT can enter and exit the shielding room. During the test, the shielding door is closed to play a shielding and isolation role. The shielding effect at the shielding door is very important.

[0003] In the prior art, a shielding door is generally provided with door bars on the top and left and right sides. When the shielding door is closed, the shielding door and the door bars are shielded by shielding parts such as springs. As for the bottom of the shielding door, in order not to affect the rotation of the shielding door, a certain gap is generally left between the shielding door and the ground. This gap will affect the shielding effect. Therefore, a fixed threshold protruding from the ground is generally provided. When the shielding door is closed, the fixed threshold and the lower position of the shielding door are shielded by shielding parts. Since the fixed threshold protrudes from the ground, it is not convenient for the test piece to enter and exit, especially when the weight of the test piece is large, it cannot meet the requirement of smooth passage.

[0004] The prior art generally adopts a movable threshold form of a liftable platform to solve the above problem, that is, the lift platform rises to form a threshold when the shielding door is closed, and descends when the test piece needs to pass through to achieve a smooth transition between indoor and outdoor; however, adding a lift platform structure outside the shielding door structure makes on-site assembly and debugging more complicated and cumbersome (the shielding door and the lift platform must meet both the action requirements and the shielding requirements after movement), and the shielding door structure plus the lift platform structure occupy a large space, with low space utilization, and further difficult to transport and carry as a whole.

[0005] Therefore, an integrated automatic lifting zero-threshold shielding door is urgently needed to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide an integrated automatic lifting zero-threshold shielding door. By arranging a moving threshold system on the shielding door, the moving threshold system is integrated with the shielding door, thereby solving the problem that adding a lifting platform structure outside the shielding door structure makes on-site assembly and debugging more complicated and cumbersome, and the shielding door structure plus the lifting platform structure occupy a large space and have low space utilization.

[0007] The purpose of the present invention can be achieved by the following technical solutions: One-piece automatic lifting zero threshold shielding door, upper door frame; A lower door frame assembly, which is correspondingly connected to the upper door frame; Door leaf system 1 and door leaf system 2 are installed at both ends of the upper door frame respectively; A moving door sill system, which is installed on the lower door frame assembly on the same side as the door leaf system one and the door leaf system two; Adjustable bottom shielding of the shielding door is achieved by cooperating with the moving threshold system, the door leaf system 1 and the door leaf system 2.

[0008] As a further solution of the present invention: door leaf system 1 includes door leaf body 1 and reinforced hinge 1, door leaf body 1 is connected to one side of the upper door frame through multiple sets of reinforced hinge 1, door leaf system 2 includes door leaf body 2 and reinforced hinge 2, door leaf body 2 is connected to the other side of the upper door frame through multiple sets of reinforced hinge 2.

[0009] As a further solution of the present invention: the lower door frame assembly includes a lower door frame body, the inner side surfaces at both ends of the lower door frame body are symmetrically connected with slide rails, the inner ends of the slide rails are connected with shielding assemblies, and the shielding assembly cooperates with the moving threshold system.

[0010] As a further solution of the present invention: the shielding assembly includes a first shielding groove and a second shielding groove connected to the inner side surfaces of the lower door frame body at both ends, the first shielding groove is close to the inner side, the second shielding groove is located on the outer side, and the second shielding groove is higher than the first shielding groove, and shielding spring sheets are arranged on the groove walls on both sides of the first shielding groove and the second shielding groove.

[0011] As a further solution of the present invention: a fixed threshold is arranged on the inner side of the lower door frame body, and the top surface of the fixed threshold is flush with the floor of the darkroom.

[0012] As a further solution of the present invention: the moving threshold system includes a fixed base, a servo motor is installed in the middle of the fixed base, the output end of the servo motor is connected to a synchronous commutator, the synchronous commutator is connected to the lift through two transmission shafts, the tops of the two lifts are cooperatively connected to a moving base, the sides of both ends of the moving base are connected to sliders, and the sliders are slidably connected to the slide rails at corresponding positions.

[0013] As a further solution of the present invention: a movable flat knife is arranged on the movable base near the shielding assembly, the movable flat knife is divided into two parts and respectively cooperates with the corresponding first shielding groove and the second shielding groove; a movable knife groove is connected to the side of the movable base away from the shielding assembly, and the movable knife groove cooperates with the fixed knife groove arranged on the upper door frame to form a complete shielding knife groove.

[0014] As a further solution of the present invention: an upwardly extending matching structure is provided at the inner side end of the moving knife groove to match with the fixed knife groove on the upper door frame.

[0015] As a further solution of the present invention: a moving threshold is arranged on the top of the moving base, a second shielding spring sheet and a fixing strip are arranged between the lower moving base and the fixing threshold, and the second shielding spring sheet is located below the fixing strip.

[0016] As a further solution of the present invention: the fixing strip is connected to the lower door frame body, the second shielding spring piece is connected to the moving base, and when the moving threshold rises, the second shielding spring piece on the moving base contacts the fixing strip, so that the gap between the moving threshold and the fixed threshold is shielded.

[0017] Beneficial effects of the present invention: The present invention integrates the moving threshold system with the shielding door by arranging the moving threshold system on the shielding door, so that the integrated shielding door is more convenient and simple to install and debug on site, occupies less space, and improves the space utilization rate of the anechoic chamber. Further, the integrated handling design reduces the number of transportation and handling times, makes it easier, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection structure between the upper door frame and the lower door frame assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the door leaf system 1 and the door leaf system 2 of the present invention; Figure 4 It is a schematic diagram of the single-pole matching structure of the leaf system 1 and the door leaf system 2 of the present invention; Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of the middle E area; Figure 6 It is a schematic diagram of the back structure of the lower door frame assembly of the present invention; Figure 7 It is a schematic diagram of the connection structure between the lower door frame assembly and the moving door sill system of the present invention; Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of the middle H region; Fig. 9 It is a schematic diagram of the cross-sectional connection structure of the moving door sill system and the lower door frame assembly of the present invention; Fig.10 It is a schematic diagram of the installation position structure of the maintenance frame and the lower door frame assembly of the present invention; Fig.11 It is a schematic diagram of the double-blade coordination structure of the leaf system 1 and the door leaf system 2 of the present invention; Fig.12 yes Fig.11 Schematic diagram of the enlarged structure of the middle F area; Fig.13 It is a schematic diagram of the cross-sectional connection structure of the moving door sill system and the lower door frame assembly when the double blades cooperate with each other in the present invention; Fig.14 yes Fig.13 Schematic diagram of the enlarged structure of the G area in the middle.

[0020] In the figure: 1, upper door frame; 11, transverse closer 1; 2, door leaf system 1; 21, door leaf body 1; 22, reinforced hinge 1; 3, door leaf system 2; 31, door leaf body 2; 32, reinforced hinge 2; 4, lower door frame assembly; 41, lower door frame body; 42, slide rail; 43, shielding assembly; 431, first shielding slot; 432, second shielding slot; 433, shielding spring 1; 44, fixed threshold; 5, moving threshold system; 51, fixed base; 52, servo motor; 53, lift ; 54. Limit base; 55. Guide assembly; 56. Motion base; 57. Motion single knife slot; 571. Matching part; 59. Slider; 510. Motion flat knife; 511. Motion threshold; 513. Shielding spring two; 514. Fixing strip; 515. Motion double knife slot; 6. Single knife head mechanism; 61. Single knife slot; 63. Single knife connecting knife seat; 63. Single knife head; 7. Maintenance frame; 8. Shielding knife slot; 9. Double knife head mechanism; 91. Double knife slot; 92. Double knife head; 93. Double knife connecting knife seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention Figure 1-Figure 14 As shown, an integrated automatic lifting zero-threshold shielding door is designed. By arranging a moving threshold system 5 on the shielding door, the moving threshold system 5 is integrated with the shielding door, making the integrated shielding door more convenient and simple to install and debug on site, and reducing the occupied space, thereby improving the space utilization rate of the radio wave darkroom. Further, the integrated handling design reduces the number of transportation and handling times, making it easier and reducing the cost.

[0023] like Figure 1 As shown, the shielding door in the present invention includes an upper door frame 1 and a lower door frame assembly 4, a door leaf system 1 2 and a door leaf system 2 3 are respectively installed at both ends of the upper door frame 1, and a movable threshold system 5 is installed on the lower door frame assembly 4. The movable threshold system 5 cooperates with the door leaf system 1 2 and the door leaf system 2 3 to realize adjustable shielding at the bottom of the shielding door, which not only meets the requirements of large-size shielding doors, but also ensures that loads can pass through the shielding door without obstacles at zero angles.

[0024] The present invention realizes a complete shielding system when the shielding door is closed through the upper door frame 1, the door leaf system 1 2, the door leaf system 2 3, the lower door frame assembly 4 and the moving threshold system 5. The moving threshold system 5 is flexibly slidably installed on the lower door frame assembly 4 and integrated with the shielding door, so that the moving threshold system 5 and the overall structure of the shielding door are more closely matched, the tightness of the horizontal direction is higher, and the combination accuracy of the two parts is higher, and the shielding door has better shielding performance at the moving position of the moving threshold system 5.

[0025] Further Figure 2 and Figure 6 As shown, the upper door frame 1 is correspondingly arranged at both ends of the lower door frame assembly 4 and fixedly connected to each other to form a complete door frame structure. The movable threshold system 5 is movably arranged on the lower door frame assembly 4. The lower door frame assembly 4 is provided with a fixed threshold 44. The rising and falling of the movable threshold system 5 cooperates with the fixed threshold 44 to achieve shielding and zero threshold passing of loads.

[0026] Further Figure 3 As shown, the above-mentioned door leaf system 2 includes a door leaf body 21 and a reinforced hinge 22, wherein the door leaf body 21 is connected to one side of the upper door frame 1 through multiple sets of reinforced hinges 22, and the door leaf body 21 can be flexibly rotated on the upper door frame 1, and the door leaf system 23 includes a door leaf body 231 and a reinforced hinge 232, wherein the door leaf body 231 is connected to the other side of the upper door frame 1 through multiple sets of reinforced hinges 232, and the door leaf system 23 is symmetrically arranged with the door leaf system 2, and the door leaf system 23 cooperates with the door leaf system 2 to realize the shielding of the double-opening shielding door, and the opening method of the door leaf system 23 and the door leaf system 2 can be manual or pneumatic, which is the prior art and will not be elaborated here.

[0027] Further Figure 6-Figure 8 As shown, the lower door frame assembly 4 includes a lower door frame body 41, and the two ends of the lower door frame body 41 are correspondingly connected to the two ends of the upper door frame 1. The inner side surfaces of the two ends of the lower door frame body 41 are symmetrically connected with slide rails 42, and the inner ends of the slide rails 42 are also connected with shielding components 43. The shielding components 43 cooperate with the moving door sill system 5 to achieve shielding between the moving connection gaps. Figure 6 and Fig. 9 As shown, a fixed threshold 44 is provided on the inner side of the lower door frame body 41 (i.e., the side close to the darkroom), and the top surface of the fixed threshold 44 is flush with the bottom surface of the darkroom. When the movable threshold system 5 is lowered, it is also flush with the fixed threshold 44, ensuring zero threshold entry and exit of objects.

[0028] Further Figure 8As shown, the above-mentioned shielding component 43 includes a first shielding groove 431 and a second shielding groove 432 connected to the inner side surfaces of the lower door frame body 41 at both ends, wherein a group of first shielding grooves 431 and second shielding grooves 432 are arranged on each side, and the first shielding grooves 431 are close to the inner side, and the second shielding grooves 432 are located on the outer side, and the second shielding grooves 432 are higher than the first shielding grooves 431 by a set distance (pre-designed according to the shielding effect), and shielding spring sheets 1 433 are arranged on the groove walls on both sides inside the first shielding grooves 431 and the second shielding grooves 432. The shielding spring sheets 1 433 cooperate with the relevant structures of the moving threshold system 5 to expand the obstruction to the transmission of radio waves and improve the shielding effect.

[0029] Further Figure 7-Figure 9 As shown, the above-mentioned motion threshold system 5 includes a fixed base 51 fixedly connected to the lower door frame body 41, wherein a servo motor 52 is installed in the middle of the fixed base 51, and the output end of the servo motor 52 is connected to a synchronous commutator, and the synchronous commutator is connected to a lift 53 through two transmission shafts to realize the lifting of the lift 53. Since the synchronous commutator and the lift are both existing technologies, they are not described here. The tops of the two lifts are matched and connected with a motion base 56, and the sides of both ends of the motion base 56 are connected with sliders 59, and the sliders 59 are slidably connected to the slide rails 42 at the corresponding positions. Further, the motion base 56 is provided with a motion base near the shielding component 43. The flat knife 510 is divided into two parts, and the movable flat knife 510 is respectively matched with the corresponding first shielding groove 431 and the second shielding groove 432, wherein the two sides of the movable flat knife 510 are abutted against the shielding spring sheet 1 433 inside the first shielding groove 431 and the second shielding groove 432, and similarly, the height of the part of the movable flat knife 510 connected with the second shielding groove 432 is higher than the part connected with the first shielding groove 431, and further, a movable knife groove is connected to the side of the movable base 56 away from the shielding component 43, and the movable knife groove cooperates with the fixed knife groove set on the upper door frame 1 to form a complete shielding knife groove 8, and cooperates with the door leaf system 1 2 and the door leaf system 2 3 to realize the shielding effect.

[0030] The synchronous commutator model is SJA2T-24-1AⅡ-150-FZ-CF, and the lift model is AT085-FL-1-P2-SL12-F.

[0031] Furthermore, a plurality of groups of limiting bases 54 are horizontally arranged inside the fixed base 51, which are used to limit the downward movement of the moving base 56, and guide components 55 are symmetrically arranged on both sides of the middle bottom end of the moving base 56 to achieve the guidance and limitation of the movement. The guide components 55 include a guide rod connected to the moving base 56 and a guide base connected to the fixed base 51, which realizes the longitudinal guidance during the movement and provides a certain degree of horizontal fitting force to ensure a close fit during the movement. And if Fig. 9As shown, a moving threshold 511 is arranged on the top of the moving base 56, and a shielding spring sheet 513 and a fixing bar 514 are arranged in the space between the moving base 56 and the fixed threshold 44, wherein the shielding spring sheet 513 is located at the bottom and is connected to the moving base 56, and the fixing bar 514 is located on the upper side of the shielding spring sheet 513 and is connected to the lower door frame body 41. When the moving threshold 511 rises, the shielding spring sheet 513 on the moving base 56 contacts the fixing bar 514, thereby realizing shielding between the moving threshold 511 and the fixed threshold 44.

[0032] Further, the present application sets single-pole matching and double-pole matching according to the shielding effect requirements, wherein Figure 4 and Figure 5 As shown, the single-pole cooperation includes a single-pole head mechanism 6 located on the door leaf system 1 2 and the door leaf system 2 3, and the single-pole head mechanism 6 includes a single-pole head 63 on the inner side of the door leaf body 1 21 and the door leaf body 2 31, and a single-pole connecting knife seat 62 is provided on the side of the door leaf body 1 21 close to the door leaf body 2 31, and a longitudinally arranged single-pole groove 61 is connected to the single-pole connecting knife seat 62, and the door leaf body 1 21 and the door leaf body 2 31 cooperate through the single-pole head 63 of the door leaf body 2 31 and the single-pole groove 61 of the door leaf body 1 21 to achieve vertical shielding of the door leaf body 1 21 and the door leaf body 2 31, and further, the fixed knife groove on the upper door frame 1 is also a single-pole structure, and the moving knife groove in the moving threshold system 5 is also a single-pole mechanism, which realizes cooperation with the single-pole head 63 on the inner side of the door leaf body 1 21 and the door leaf body 2 31, thereby completing the single-pole cooperation and shielding.

[0033] More specific ones include Figure 8-Figure 9 The moving knife groove in the moving door sill system 5 is a moving single knife groove 57, and the two ends of the moving single knife groove 57 are provided with matching parts 571 extending upward to achieve the tortuosity of the docking point, further increase the difficulty of radio wave transmission, and enhance the shielding effect.

[0034] like Figure 11-Figure 12 As shown, the double-knife matching structure includes a double-knife head mechanism 9 located on the door leaf system 1 2 and the door leaf system 2 3, the double-knife head mechanism 9 includes a double-knife head 92 on the inner side of the door leaf body 1 21 and the door leaf body 2 31, and the door leaf body 1 21 is provided with a double-knife connecting knife seat 93 on the side close to the door leaf body 2 31, and the double-knife connecting knife seat 93 is connected with a double-knife groove 91 arranged in the center longitudinal direction, the door leaf body 1 21 and the door leaf body 2 31 are matched through the double-knife head 92 of the door leaf body 2 31 and the double-knife groove 91 of the door leaf body 1 21 to realize the vertical shielding of the door leaf body 1 21 and the door leaf body 2 31, the fixed knife groove on the upper door frame 1 is a double-knife structure, and the moving knife groove in the moving threshold system 5 is a double-knife mechanism, which realizes the match with the double-knife head 92 on the inner side of the door leaf body 1 21 and the door leaf body 2 31, thereby completing the double-knife matching; the specific example is as follows Figure 13-14The moving blade groove in the moving door sill system 5 is a moving double blade groove 515, which is provided with a matching structure extending upwards in accordance with the moving single blade groove 57, and matches with the double blade head 92, and the specific matching is as follows: Fig.14 shown.

[0035] In the present invention, regardless of whether it is a single blade groove 61 or a double blade groove 91, a shielding spring sheet 433 is symmetrically arranged on the inner side wall thereof to achieve cooperation with the single blade head 63 or the double blade head 92, thereby improving the shielding effect.

[0036] The outer side of the shielding door of the present invention can also be provided with a maintenance frame 7. Fig.10 As shown, when the moving door sill system 5 needs to be repaired, the maintenance rack 7 is opened for maintenance, which is convenient and quick. The top surface of the maintenance rack 7 is flush with the ground, and a maintenance groove is excavated in advance to place the maintenance rack 7.

[0037] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. Integrated automatic lifting zero threshold shielding door, characterized by: include Upper door frame (1); A lower door frame assembly (4), which is correspondingly connected to the upper door frame (1); Door leaf system 1 (2) and door leaf system 2 (3), which are respectively installed at two ends of the upper door frame (1); A moving door sill system (5) is mounted on the lower door frame assembly (4) on the same side as the door leaf system 1 (2) and the door leaf system 2 (3); The movable threshold system (5) cooperates with the door leaf system 1 (2) and the door leaf system 2 (3) to realize adjustable shielding of the bottom of the shielding door.

2. The integrated automatic lifting zero threshold shielding door according to claim 1 is characterized in that: The door leaf system 1 (2) comprises a door leaf body 1 (21) and a reinforced hinge 1 (22), wherein the door leaf body 1 (21) is connected to one side of the upper door frame (1) via a plurality of sets of reinforced hinges 1 (22), and the door leaf system 2 (3) comprises a door leaf body 2 (31) and a reinforced hinge 2 (32), wherein the door leaf body 2 (31) is connected to the other side of the upper door frame (1) via a plurality of sets of reinforced hinges 2 (32).

3. The integrated automatic lifting zero-threshold shielding door according to claim 1 is characterized in that: The lower door frame assembly (4) comprises a lower door frame body (41), the inner side surfaces at both ends of the lower door frame body (41) are symmetrically connected to slide rails (42), the inner ends of the slide rails (42) are connected to shielding assemblies (43), and the shielding assemblies (43) cooperate with the moving door sill system (5).

4. The integrated automatic lifting zero-threshold shielding door according to claim 3 is characterized in that: The shielding assembly (43) comprises a first shielding groove (431) and a second shielding groove (432) connected to the inner side surfaces of the lower door frame body (41) at both ends, the first shielding groove (431) is close to the inner side, the second shielding groove (432) is located on the outer side, and the second shielding groove (432) is higher than the first shielding groove (431), and shielding spring sheets (433) are arranged on the groove walls on both sides of the first shielding groove (431) and the second shielding groove (432).

5. The integrated automatic lifting zero-threshold shielding door according to claim 4 is characterized in that: A fixed threshold 44 is disposed inside the lower door frame body 41 , and the top surface of the fixed threshold 44 is flush with the floor of the darkroom.

6. The integrated automatic lifting zero-threshold shielding door according to claim 5, characterized in that: The moving threshold system (5) comprises a fixed base (51), a servo motor (52) is installed in the middle of the fixed base (51), the output end of the servo motor (52) is connected to a synchronous commutator, the synchronous commutator is connected to a lift (53) through two transmission shafts, the tops of the two lifts (53) are matched and connected to a moving base (56), the sides of both ends of the moving base (56) are connected to sliders (59), and the sliders (59) are slidably connected to the slide rails (42) at corresponding positions.

7. The integrated automatic lifting zero-threshold shielding door according to claim 6, characterized in that: A movable flat knife (510) is arranged on the movable base (56) near the shielding component (43); the movable flat knife (510) is divided into two parts, which respectively cooperate with the corresponding first shielding groove (431) and second shielding groove (432); a movable knife groove is connected to the side of the movable base (56) away from the shielding component (43); the movable knife groove cooperates with the fixed knife groove arranged on the upper door frame (1) to form a complete shielding knife groove (8).

8. The integrated automatic lifting zero-threshold shielding door according to claim 7, characterized in that: The inner end of the movable knife groove is provided with a matching structure extending upwards, which matches with the fixed knife groove on the upper door frame (1).

9. The integrated automatic lifting zero-threshold shielding door according to claim 6, characterized in that: A moving threshold (511) is arranged on the top of the moving base (56), and a second shielding spring sheet (513) and a fixing strip (514) are arranged between the lower moving base (56) and the fixing threshold (44), wherein the second shielding spring sheet (513) is located below the fixing strip (514).

10. The integrated automatic lifting zero-threshold shielding door according to claim 9, characterized in that: The fixing strip 514 is connected to the lower door frame body 41 , and the second shielding spring piece 513 is connected to the moving base 56 . When the moving threshold 511 rises, the second shielding spring piece 513 on the moving base 56 contacts the fixing strip 514 , so that the gap between the moving threshold 511 and the fixed threshold 44 is shielded.

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