Three-knife four-spring electromagnetic shielding vertical hinged door

Abstract

The utility model discloses a three-knife four-spring electromagnetic shielding vertical hinged door which comprises a door frame and a synchronous locking mechanism. A door leaf is hinged to the front side of the door frame through evenly-distributed hinges, four door frame reeds are arranged on the rear wall of the door frame, three door leaf knife edges are arranged on the rear side of the door leaf, the three door leaf knife edges and the four door frame reeds are installed in a matched mode, a transmission shell is arranged on the front side of the door leaf, and evenly-distributed locking seats are arranged on the front side of the door frame. The synchronous locking mechanism is arranged in the transmission shell, the synchronous locking mechanism and the locking seat are installed in a matched mode, and the synchronous locking mechanism comprises a first gear, a first rack plate, a locking block, a second gear, a second rack plate and a first rectangular guide rod. All closing and locking parts of the three-knife four-spring electromagnetic shielding vertical hinged door can be synchronously locked, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic shielding flat doors, in particular to a three-knife four-spring electromagnetic shielding flat door. Background Technique

[0002] In darkroom test equipment, the electromagnetic shielding door is the most important equipment for shielding the darkroom. Personnel enter and exit the darkroom test through the shielding door. After the door is closed, it can well ensure that the test environment meets the requirements. The three-knife four-spring structure is adopted to improve the shielding effect of the device on electromagnetic waves. Some three-knife four-spring electromagnetic shielding flat doors include a door frame, a closing door and a three-knife four-spring assembly. When in use, first, the closing door is closed with the door frame through hinges, so that the three-knife four-spring assembly between the door frame and the closing door is inserted and contacted, and a conductive path is formed through the three-knife four-spring assembly to shield electromagnetic waves. However, after the door frame and the closing door are closed, in order to avoid loosening between the two, which affects the electromagnetic shielding effect, a door lock assembly is needed to lock the door frame and the closing door. Since the contact range between the door frame and the closing door is relatively large, in order to improve the closing tightness between the two, multiple door lock assemblies are usually selected between the door frame and the closing door. However, in this way, every time the electromagnetic shielding door is closed and locked, it is necessary to perform closing operations on multiple door locks one by one, which is time-consuming. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a three-knife four-spring electromagnetic shielding flat door. The device can synchronously lock each closing and locking part of the three-knife four-spring electromagnetic shielding flat door through a transmission element and an elastic component, and the operation is convenient and fast, and the problems in the background technique can be effectively solved.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A three-knife four-spring electromagnetic shielding flat door, including a door frame and a synchronous locking mechanism;

[0005] Door frame: A door leaf is hinged to the front side thereof through evenly distributed hinges. A door frame four-spring piece is provided on the rear wall of the door frame. A door leaf three-knife opening is provided on the rear side of the door leaf. The door leaf three-knife opening is cooperatively installed with the door frame four-spring piece. A transmission shell is provided on the front side of the door leaf. Evenly distributed locking seats are provided on the front side of the door frame;

[0006] Synchronous locking mechanism: It is arranged inside the transmission shell. The synchronous locking mechanism is cooperatively installed with the locking seat. The device can synchronously lock each closing and locking part of the three-knife four-spring electromagnetic shielding flat door through a transmission element and an elastic component, and the operation is convenient and fast.

[0007] Further, the synchronous locking mechanism includes a first gear, a first rack plate, a locking block, a second gear, a second rack plate, and a first rectangular guiding rod. The first gear is rotatably connected to the rear wall of the transmission housing through a first rotating shaft. The rear wall of the transmission housing is provided with uniformly distributed sliding grooves, and the inner parts of the sliding grooves are all slidably connected with the first rack plates. The first rack plates are all meshed and connected with the first gear. The rear wall of the transmission housing is rotatably connected with uniformly distributed second gears through second rotating shafts. The inside of the transmission housing is provided with uniformly distributed first rectangular guiding rods. The left ends of the first rectangular guiding rods are all slidably connected with second rack plates. The second rack plates are all meshed and connected with the adjacent second gears. Locking blocks are arranged at the ends of the first rack plates and the second rack plates away from the center of the transmission housing. The locking blocks are all cooperatively installed with the adjacent locking seats. Through the transmission elements and the elastic components, the locking operations can be synchronously performed on each closing and locking part of the three-knife four-spring electromagnetic shielding flat door, and the operation is convenient and fast.

[0008] Further, the first rack plates and the adjacent second rack plates are longitudinally offset from each other to avoid interference between the first rack plate and the second rack plate during the moving process.

[0009] Further, the synchronous locking mechanism further includes an elastic component and an opening / closing and locking component. The elastic components are all arranged between the first rack plates and the vertically adjacent locking blocks. An opening / closing and locking component is arranged inside the transmission housing. The opening / closing and locking component is meshed and connected with the first gear to provide power for the closing and locking of the three-knife four-spring electromagnetic shielding flat door.

[0010] Further, the elastic component includes a telescopic column and a spring. The telescopic column and the spring are both arranged between the locking block and the longitudinally adjacent first rack plate. The springs are all movably sleeved on the outer ends of the adjacent telescopic columns. Through the compression elastic force of the springs, the locking blocks of the three-knife four-spring electromagnetic shielding flat door can run synchronously.

[0011] Further, the opening / closing and locking component includes a third rack plate, a translation seat, a sliding seat, and an L-shaped sliding groove. The L-shaped sliding groove is opened on the front wall of the transmission housing. A second rectangular guiding rod is arranged inside the transmission housing. The right end of the second rectangular guiding rod is slidably connected with the third rack plate. The third rack plate is meshed and connected with the first gear. A translation seat is arranged at the right end of the third rack plate. The front side of the translation seat is vertically slidably connected with the sliding seat. The middle part of the sliding seat is slidably connected with the L-shaped sliding groove to limit the movement of the locking block of the three-knife four-spring electromagnetic shielding flat door towards the end away from the center of the device.

[0012] Further, the opening / closing and locking component further includes a handwheel. The handwheel is arranged at the front end of the sliding seat, which is convenient for applying an external force to the vertical movement of the sliding seat when the three-knife four-spring electromagnetic shielding flat door is closed and locked.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The three-knife four-spring electromagnetic shielding flat door of the present utility model has the following advantages:

[0014] When the three - blade four - spring electromagnetic shielding flat door is closed and locked, turn the handwheel to drive the sliding seat to move vertically downward to the bottom at the right - most end of the L - shaped chute, thereby releasing the lateral movement limit of the third rack plate. During this process, the sliding seat slides vertically downward along the translation seat, and then due to the compressive elastic force of the spring, the first rack plate slides along the chute towards the end far from the center of the transmission housing. When the first rack plate moves vertically, it drives the first gear to rotate forward through meshing connection. The first gear makes the third rack plate indirectly drive the sliding seat to slide leftward along the lower end of the L - shaped chute through meshing connection. At the same time, the first rack plate makes the corresponding second gear rotate forward through meshing connection, and the second gear makes the corresponding second rack plate move leftward along the first rectangular guide rod through meshing connection. The first rack plate and the second rack plate respectively drive the corresponding locking blocks to be inserted into the adjacent locking seats, thereby realizing the quick closing and locking operation of the three - blade four - spring electromagnetic shielding flat door. This three - blade four - spring electromagnetic shielding flat door can synchronously lock each closing and locking part of the three - blade four - spring electromagnetic shielding flat door through transmission elements and elastic components, and the operation is convenient and fast. Brief Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the present utility model;

[0017] Figure 3 It is a schematic structural diagram of the transmission housing of the present utility model;

[0018] Figure 4 It is an enlarged schematic structural diagram of part A of the present utility model;

[0019] Figure 5 It is an enlarged schematic structural diagram of part B of the present utility model.

[0020] In the figure: 1 door frame, 2 door leaf, 3 four - spring pieces of the door frame, 4 locking seat, 5 transmission housing, 6 synchronous locking mechanism, 61 first gear, 62 first rack plate, 63 locking block, 64 second gear, 65 second rack plate, 66 first rectangular guide rod, 67 elastic component, 671 telescopic column, 672 spring, 68 opening - closing and locking component, 681 third rack plate, 682 translation seat, 683 sliding seat, 684 L - shaped chute, 685 handwheel. Detailed Description of the Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5 , this embodiment provides a technical solution: a three-knife four-spring electromagnetic shielding flat door, including a door frame 1 and a synchronous locking mechanism 6;

[0023] Door frame 1: The front side thereof is hinged with a door leaf 2 through evenly distributed hinges. A door frame four-spring piece 3 is provided on the rear wall of the door frame 1. A door leaf three-knife opening is provided on the rear side of the door leaf 2. The door leaf three-knife opening is cooperatively installed with the door frame four-spring piece 3. A transmission shell 5 is provided on the front side of the door leaf 2. Evenly distributed locking seats 4 are provided on the front side of the door frame 1. The initial spring 672 of the device is in a contracted state. When closing the three-knife four-spring electromagnetic shielding flat door, rotate the door leaf 2 to rotate around the hinge so as to close with the door frame 1. At this time, the three blades of the door leaf are inserted into the door frame four-spring piece 3. At this time, the three blades of the door leaf, the door frame four-spring piece 3 and the door frame 1 form an uninterrupted conductive path, which is beneficial to eliminating non-conductive gaps, and electromagnetic waves are not easily leaked, playing a good electromagnetic shielding role;

[0024] Synchronous locking mechanism 6: It is arranged inside the transmission housing 5. The synchronous locking mechanism 6 is cooperatively installed with the locking seat 4. The synchronous locking mechanism 6 includes a first gear 61, a first rack plate 62, a locking block 63, a second gear 64, a second rack plate 65, and a first rectangular guide rod 66. The first gear 61 is rotatably connected to the rear wall of the transmission housing 5 through a first rotating shaft. The rear wall of the transmission housing 5 is provided with evenly distributed sliding grooves, and the inside of each sliding groove is slidably connected with a first rack plate 62. Each first rack plate 62 is meshed with the first gear 61. The rear wall of the transmission housing 5 is rotatably connected with evenly distributed second gears 64 through second rotating shafts. The inside of the transmission housing 5 is provided with evenly distributed first rectangular guide rods 66. The left ends of the first rectangular guide rods 66 are slidably connected with second rack plates 65. Each second rack plate 65 is meshed with the adjacent second gear 64. Locking blocks 63 are provided at the ends of the first rack plate 62 and the second rack plate 65 away from the center of the transmission housing 5. Each locking block 63 is cooperatively installed with the adjacent locking seat 4. The first rack plate 62 and the second rack plate 65 are longitudinally offset from each other. The synchronous locking mechanism 6 further includes an elastic component 67 and an opening and closing locking component 68. The elastic component 67 is arranged between the first rack plate 62 and the vertically adjacent locking block 63. An opening and closing locking component 68 is arranged inside the transmission housing 5. The opening and closing locking component 68 is meshed with the first gear 61. The elastic component 67 includes a telescopic column 671 and a spring 672. The telescopic column 671 and the spring 672 are arranged between the locking block 63 and the longitudinally adjacent first rack plate 62. Each spring 672 is movably sleeved on the outer end of the adjacent telescopic column 671. The opening and closing locking component 68 includes a third rack plate 681, a translation seat 682, a sliding seat 683, and an L-shaped sliding groove 684. The L-shaped sliding groove 684 is opened on the front wall of the transmission housing 5. A second rectangular guide rod is arranged inside the transmission housing 5. The right end of the second rectangular guide rod is slidably connected with a third rack plate 681. The third rack plate 681 is meshed with the first gear 61. A translation seat 682 is provided at the right end of the third rack plate 681. The front side of the translation seat 682 is vertically slidably connected with a sliding seat 683. The middle of the sliding seat 683 is slidably connected with the L-shaped sliding groove 684. The opening and closing locking component 68 further includes a handwheel 685. The handwheel 685 is arranged at the front end of the sliding seat 683. When the three-knife four-spring electromagnetic shielding door is closed and locked, the handwheel 685 is toggled to drive the sliding seat 683 to vertically move downward to the bottom along the rightmost end of the L-shaped sliding groove 684, thereby releasing the horizontal movement limit of the third rack plate 681. During this process, the sliding seat 683 vertically slides down along the translation seat 682. Subsequently, through the compressive elastic force of the spring 672, the first rack plate 62 slides along the sliding groove towards the end away from the center of the transmission housing 5. During the vertical movement of the first rack plate 62, it drives the first gear 61 to rotate forward through meshing connection. The first gear 61 drives the sliding seat 683 to slide leftward along the lower end of the L-shaped sliding groove 684 indirectly through the third rack plate 681 through meshing connection. The first rack plate 62 also makes the corresponding second gear 64 rotate forward through meshing connection. The second gear 64 makes the corresponding second rack plate 65 move leftward along the first rectangular guide rod 66 through meshing connection.The rack plate one 62 and the rack plate two 65 drive the corresponding locking blocks 63 to be inserted into the adjacent locking seats 4 respectively, so as to realize the quick closing and locking operation of the three-knife four-spring electromagnetic shielding flat door. The operation is convenient and fast. For the three-knife four-spring electromagnetic shielding flat door, through the transmission element and the elastic component 67, the locking operations of each closing and locking part of the three-knife four-spring electromagnetic shielding flat door can be carried out synchronously, and the operation is convenient and fast.

[0025] The working principle of a three-knife four-spring electromagnetic shielding flat door provided by the present utility model is as follows: The initial spring 672 of the device is in a contracted state. When closing the three-knife four-spring electromagnetic shielding flat door, rotate the door leaf 2 to make it rotate around the hinge so as to close with the door frame 1. At this time, the three blades of the door leaf are inserted into the four spring pieces 3 of the door frame. At this time, the three blades of the door leaf, the four spring pieces 3 of the door frame and the door frame 1 form an uninterrupted conductive path, which is beneficial to eliminating non-conductive gaps, and electromagnetic waves are not easily leaked, playing a good electromagnetic shielding role. When the electromagnetic shielding door is closed and locked, turn the handwheel 685 to drive the sliding seat 683 to move vertically downward to the bottom at the rightmost end of the L-shaped chute 684, so as to release the horizontal movement limit of the rack plate three 681. During this process, the sliding seat 683 slides vertically downward along the translation seat 682, and then through the compression elastic force of the spring 672, the rack plate one 62 slides along the chute towards the end far from the center of the transmission housing 5. During the vertical movement of the rack plate one 62, the first gear 61 is driven to rotate forward through meshing connection. The first gear 61 drives the rack plate three 681 through meshing connection, so as to indirectly drive the sliding seat 683 to slide leftward at the lower end of the L-shaped chute 684. At the same time, the rack plate one 62 makes the corresponding second gear 64 rotate forward through meshing connection. The second gear 64 drives the corresponding rack plate two 65 to move leftward along the rectangular guide rod one 66 through meshing connection. The rack plate one 62 and the rack plate two 65 drive the corresponding locking blocks 63 to be inserted into the adjacent locking seats 4 respectively, so as to realize the quick closing and locking operation of the three-knife four-spring electromagnetic shielding flat door. The operation is convenient and fast.

[0026] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A three-blade and four-spring electromagnetic shielding swing door, characterized in that: It comprises a door frame (1) and a synchronous locking mechanism (6); Door frame (1): a door leaf (2) is hingedly connected to the front side thereof via evenly distributed hinges, a rear wall of the door frame (1) is provided with four door frame springs (3), a rear side of the door leaf (2) is provided with three door leaf blades, the three door leaf blades are mounted in coordination with the four door frame springs (3), a transmission housing (5) is provided on the front side of the door leaf (2), and evenly distributed locking seats (4) are provided on the front side of the door frame (1); Synchronous locking mechanism (6): it is arranged inside the transmission housing (5), and the synchronous locking mechanism (6) is installed in cooperation with the locking seat (4); The synchronous locking mechanism (6) comprises a gear 1 (61), a rack plate 1 (62), a locking block (63), a gear 2 (64), a rack plate 2 (65) and a rectangular guide rod 1 (66), wherein the gear 1 (61) is rotatably connected to the rear wall of the transmission housing (5) via a rotating shaft 1, and the rear wall of the transmission housing (5) is provided with evenly distributed sliding grooves, and the interiors of the sliding grooves are all slidably connected to the rack plates 1 (62), and the rack plates 1 (62) are all meshedly connected to the gear 1 (61). The rear wall of the transmission housing (5) A uniformly distributed gear 2 (64) is rotatably connected via a rotating shaft 2, a uniformly distributed rectangular guide rod 1 (66) is provided inside the transmission housing (5), a rack plate 2 (65) is slidably connected to the left end of each rectangular guide rod 1 (66), the rack plate 2 (65) is meshedly connected to the adjacent gear 2 (64), a locking block (63) is provided at one end of the rack plate 1 (62) and the rack plate 2 (65) away from the center of the transmission housing (5), and the locking block (63) is mounted in cooperation with the adjacent locking seat (4); The rack plate 1 (62) is longitudinally staggered with the adjacent rack plate 2 (65); The synchronous locking mechanism (6) further comprises an elastic component (67) and an opening and closing locking component (68), wherein the elastic component (67) is arranged between the rack plate 1 (62) and the vertically adjacent locking block (63), and the opening and closing locking component (68) is arranged inside the transmission housing (5), and the opening and closing locking component (68) is meshingly connected with the gear 1 (61).

2. The three-blade and four-spring electromagnetic shielding swing door according to claim 1, characterized in that: The elastic component (67) comprises a telescopic column (671) and a spring (672), wherein the telescopic column (671) and the spring (672) are both arranged between the locking block (63) and a longitudinally adjacent rack plate (62), and the spring (672) is movably sleeved with the outer end of the adjacent telescopic column (671).

3. The three-blade and four-spring electromagnetic shielding swing door according to claim 2, characterized in that: The opening and closing locking assembly (68) comprises a rack plate three (681), a translation seat (682), a slide seat (683) and an L-shaped slide groove (684), wherein the L-shaped slide groove (684) is opened on the front wall of the transmission housing (5), and a rectangular guide rod two is provided inside the transmission housing (5), and the right end of the rectangular guide rod two is slidably connected to the rack plate three (681), and the rack plate three (681) is meshedly connected to the gear one (61), and the right end of the rack plate three (681) is provided with a translation seat (682), and the front side of the translation seat (682) is vertically slidably connected to the slide seat (683), and the middle part of the slide seat (683) is slidably connected to the L-shaped slide groove (684).

4. The three-blade and four-spring electromagnetic shielding swing door according to claim 3, characterized in that: The opening and closing locking assembly (68) further comprises a hand wheel (685), wherein the hand wheel (685) is arranged at the front end of the slide seat (683).

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