Darkroom shielding door lock body structure

Abstract

The invention relates to the technical field of shielding door processing, in particular to a darkroom shielding door lock body structure which comprises a door frame and a door body hinged to the door frame and further comprises a shielding locking mechanism arranged between the door body and the door frame and comprising a shielding locking assembly and an arc-shaped reed which are arranged in a combined mode. The shielding locking assembly comprises a locking shielding slotting tool, locking shielding clamping bases located on the two sides of the locking shielding slotting tool and a driving assembly used for driving the locking shielding clamping bases to move. Through the combination design of the shielding locking assembly, the arc-shaped reed and the arc-shaped slotting tool, a complete shielding structure can be formed, effective electromagnetic shielding of the connecting position of the door body and the door frame is achieved, meanwhile, locking shielding clamping bases capable of being opened and closed symmetrically are arranged in the shielding locking assembly, and after the locking shielding slotting tool is locked and clamped by the locking shielding clamping bases, the locking shielding clamping bases can be opened and closed. Therefore, the effects of a lock body and a shielding structure can be achieved at the same time, and after the locking shielding clamping base expands outwards to completely unlock the locking shielding slotting tool, resistance generated when the door body is opened can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of screen doors, and specifically to a structure of a darkroom screen door lock body. Background Art

[0002] The main function of a shielded room is to isolate external electromagnetic interference and ensure the normal operation of indoor electronic and electrical equipment. Especially in the measurement and testing work of electronic components and electrical equipment, by using an electromagnetic shielding room or a darkroom to simulate an ideal electromagnetic environment, the accuracy of the detection results can be improved. The shell of the shielded room is assembled by high-quality cold-rolled galvanized steel plates, and is equipped with an electromagnetic leakage-proof screen door, a special ventilation waveguide window, transmission and fire waveguides. Among them, the shielding quality of the screen door directly affects the shielding effect of the entire shielded room.

[0003] For example, the patent with the publication number CN113944417A discloses a shielded pneumatic sector door, including a door frame and a door body. The door body is hinged to the door frame. An external handle is rotatably connected to the door body. The external handle passes through the door body through a rotating shaft and is connected to an internal handle. A spur gear is sleeved on one side of the rotating shaft close to the external handle. The left and right sides of the spur gear are respectively meshed with a first straight rack and a second straight rack. The second straight rack is driven by a cylinder. Connecting rods are fixed at both the upper and lower ends of the first straight rack. Limiting guide boxes are symmetrically arranged on the door body. One end of the connecting rod far from the first straight rack extends into the limiting guide box and is connected to a limiting guide rod slidably connected to the limiting guide box. One end of the limiting guide rod and the connecting rod extends outside the limiting guide box and is connected to a locking rod. A locking groove matching the locking rod is arranged on the door frame. It realizes shielding through the cooperation of a conical knife and an L-shaped knife structure with a beryllium copper reed, improving the shielding effect between the door frame and the door body.

[0004] In the prior art such as the above patent, the lock body and the plug-in knife reed are independently designed. The lock body can only lock and unlock the door body. When the lock body is unlocked, when the door body is opened, it needs to overcome the static friction between the plug-in knife and the reed. Since the circumferential contact line between the plug-in knife and the reed is long and the static friction is large, a large force is required to open the door body. In addition, after long-term use, an oxide layer is likely to exist on the surfaces of the plug-in knife and the reed, and an overly thick oxide layer is likely to damage the conductive contact between the plug-in knife and the reed, affecting the electromagnetic shielding effect of the screen door. Therefore, a structure of a darkroom screen door lock body is urgently needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a structure of a darkroom screen door lock body to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: A darkroom shielding door lock body structure, including a door frame and a door body hinged to the door frame, further including: a shielding locking mechanism, which is arranged between the door body and the door frame and includes a combined shielding locking component and an arc-shaped reed;

[0007] The shielding locking component includes a locking shielding plug, locking shielding clamp seats on both sides of the locking shielding plug, and a driving component for driving the locking shielding clamp seats to move;

[0008] After the driving component drives the locking shielding clamp seats to move and clamp the locking shielding plug, locking and conductive contact are achieved between the door body and the door frame; when the driving component drives the locking shielding clamp seats to move and fully unlock the locking shielding plug, it is used to reduce the resistance when the door body is opened; when the driving component drives the locking shielding clamp seats to semi-unlock the locking shielding plug, the oxide layer at the contact position of the locking shielding clamp seats and the locking shielding plug can be cleaned when the door body is opened.

[0009] Preferably, the shielding locking component and the arc-shaped reed can be combined into a complete rectangular structure, and there is conductive contact between the shielding locking component and the arc-shaped reed. The shielding locking mechanism further includes an arc-shaped plug, which is fixedly installed on the door frame and can be inserted into the arc-shaped reed.

[0010] Preferably, the shielding locking component further includes a mounting seat, which is fixedly installed on the back of the door body. The locking shielding clamp seats are symmetrically arranged inside the mounting seat. The locking shielding plug is fixedly installed on the front of the door frame, and the driving component is movably installed on the mounting seat.

[0011] Preferably, the locking shielding plug and the locking shielding clamp seats are provided with mutually cooperating contact surfaces. The locking shielding clamp seats are provided with inner scraping parts for cleaning the oxide layer on the contact surface of the locking shielding plug, and the locking shielding plug is provided with outer scraping parts for cleaning the oxide layer on the contact surface of the locking shielding clamp seats.

[0012] Preferably, the driving component includes a transmission bracket and a connecting sleeve. The connecting sleeve is fixedly connected to the transmission bracket. A connecting rod is movably sleeved in the connecting sleeve, and the connecting rod is fixedly connected to the locking shielding clamp seat. A compression spring is movably sleeved outside the connecting rod.

[0013] Preferably, the compression spring is movably sleeved at one end of the connecting rod close to the locking shielding clamp seat, and the compression spring can continuously apply elastic force to the locking shielding clamp seat.

[0014] Preferably, opening and closing grips are rotatably connected to both the front and the back of the door body. A transmission mechanism is arranged on the back of the door body. When the opening and closing grip rotates, it can drive the locking shielding clamp seats in the shielding locking component to open and close through the transmission of the transmission mechanism.

[0015] Preferably, the transmission mechanism includes an adjustment shaft which is penetrated through the door body, a transmission shaft which is movably installed on the back of the door body, and a bevel gear set which is arranged on the transmission shaft and used for changing the power direction.

[0016] Preferably, a positioning mechanism is arranged on the front of the door body at the position of the opening and closing grip for positioning the opening and closing grip after it rotates in place.

[0017] Preferably, the positioning mechanism includes a positioning disk which is fixedly sleeved on the front end of the adjustment shaft, positioning arc-shaped convex blocks which are evenly distributed on the periphery of the positioning disk, a positioning seat which is fixedly installed on the door body, and a positioning elastic clip which is arranged on the inner wall of the positioning seat. When the positioning disk rotates, the positioning arc-shaped convex blocks on its periphery can be sequentially clamped on the positioning elastic clip.

[0018] In the above technical solution, the beneficial effect of the present invention is that by combining the shielding and locking assembly with the arc-shaped spring piece and the arc-shaped insertion knife, a complete shielding structure can be formed to achieve effective electromagnetic shielding at the connection position between the door body and the door frame. At the same time, a lockable shielding clip seat that can be symmetrically opened and closed is arranged in the shielding and locking assembly. After the lockable shielding clip seat locks and clamps the lockable shielding insertion knife, it can have the effects of both a lock body and a shielding structure. Moreover, when the lockable shielding clip seat expands outward to fully unlock the lockable shielding insertion knife, the resistance when the door body is opened can be greatly reduced. In addition, after the lockable shielding clip seat semi-unlocks the lockable shielding insertion knife, the outer scraping part and the inner scraping part cooperate to clean the oxide layer at the contact position between the lockable shielding clip seat and the lockable shielding insertion knife when the door body is opened, ensuring effective conductive contact between the two, and thus ensuring the electromagnetic shielding effect.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the present disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure and does not represent the full scope of the disclosed technology or a comprehensive disclosure of all features. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the overall combination of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the back of the door body of the present invention;

[0024] Figure 3 This is a schematic structural diagram of the door body and door frame of the present invention after expansion;

[0025] Figure 4 This is a schematic structural diagram of the shielding locking assembly of the present invention;

[0026] Figure 5 This is a schematic structural diagram of the locking shielding socket locking the locking shielding plug after locking;

[0027] Figure 6 This is a schematic structural diagram of the locking shielding socket fully unlocking the locking shielding plug of the present invention;

[0028] Figure 7 This is a schematic structural diagram of the locking shielding socket semi-unlocking the locking shielding plug of the present invention;

[0029] Figure 8 This is a schematic structural diagram of the upper slag discharge channel of the locking shielding socket and the locking shielding plug of the present invention during operation;

[0030] Figure 9 This is a schematic structural diagram of the upper slag discharge groove of the arc-shaped spring piece of the present invention;

[0031] Figure 10 This is a schematic structural diagram of the upper slag discharge channel of the locking shielding socket and the locking shielding plug of the present invention;

[0032] Figure 11 This is a schematic structural diagram of the installation position of the transmission mechanism of the present invention;

[0033] Figure 12 This is a schematic structural diagram of the overall transmission mechanism of the present invention;

[0034] Figure 13 For the present invention Figure 9 The enlarged structural diagram at position A;

[0035] Figure 14 For the present invention Figure 9 The enlarged structural diagram at position B;

[0036] Figure 15 This is a schematic structural diagram of the positioning mechanism of the present invention.

[0037] Explanation of reference numerals:

[0038] In the figure: 1. Door body; 2. Door frame; 3. Shielding locking mechanism; 31. Shielding locking assembly; 311. Mounting seat; 312. Locking shielding socket; 313. Locking shielding plug; 314. Transmission bracket; 315. Connecting sleeve; 316. Connecting rod; 317. Compression spring; 318. Outer scraping part; 319. Inner scraping part; 3110. Bidirectional screw; 3111. Slag discharge channel; 32. Arc-shaped spring piece; 33. Arc-shaped plug

[0039] 4. Transmission mechanism; 41. Adjusting shaft; 42. Driving bevel gear; 43. Horizontal transmission shaft; 44. First driven bevel gear; 45. Driving bevel gear for transmission; 46. Longitudinal transmission shaft; 47. Second driven bevel gear;

[0040] 5. Opening and closing grip;

[0041] 6. Positioning mechanism; 61. Positioning disc; 62. Positioning arc-shaped convex block; 63. Positioning seat; 64. Positioning elastic clip. Specific implementation manner

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0043] Please refer to Figures 1-15 , an embodiment of the present invention provides a technical solution: a darkroom shielding door lock body structure, including a door frame 2 and a door body 1 hinged to the door frame 2, further including: a shielding locking mechanism 3, which is disposed between the door body 1 and the door frame 2 and includes a combined shielding locking component 31 and an arc-shaped spring piece 32;

[0044] The shielding locking component 31 includes a locking shielding plug 313, locking shielding clamp seats 312 located on both sides of the locking shielding plug 313, and a driving component for driving the locking shielding clamp seats 312 to move;

[0045] After the driving component drives the locking shielding clamp seats 312 to move to clamp the locking shielding plug 313, locking and electrical conduction contact are achieved between the door body 1 and the door frame 2; the driving component drives the locking shielding clamp seats 312 to move to fully unlock the locking shielding plug 313 for reducing the resistance when the door body 1 is opened; when the driving component drives the locking shielding clamp seats 312 to semi-unlock the locking shielding plug 313, the oxide layer at the contact position of the locking shielding clamp seats 312 and the locking shielding plug 313 can be cleaned when the door body 1 is opened.

[0046] Specifically, the shielding and locking component 31 is made of a conductive material. The ends of the mounting seat 311 and the locking shielding clip seat 312 are both in contact with the arc-shaped spring piece 32, and the end of the locking shielding plug 313 is in contact with the arc-shaped plug 33. The combination of the shielding and locking component 31 and the arc-shaped spring piece 32 can act as the function of a traditional spring piece, and the combination of the arc-shaped plug 33 and the locking shielding plug 313 can act as the function of a traditional plug. After the door body 1 is closed, the arc-shaped plug 33 is inserted into the arc-shaped spring piece 32, and the locking shielding plug 313 is inserted into the locking shielding clip seat 312 at the corresponding position, which can make the connection between the door body 1 and the door frame 2 achieve conductive contact and ensure the electromagnetic shielding effect at the connection position between the door body 1 and the door frame 2. The opening and closing grip 5 can drive the two groups of locking shielding clip seats 312 in the shielding and locking component 31 to move synchronously inward or outward through the transmission mechanism 4. After the two groups of locking shielding clip seats 312 lock and clamp the locking shielding plug 313, it can have the effects of both a lock body and a shielding structure. When the locking shielding clip seat 312 expands outward to fully unlock the locking shielding plug 313, only the arc-shaped plug 33 and the arc-shaped spring piece 32 are in an inserted state at this time, which can greatly reduce the resistance when the door body 1 is opened. After the locking shielding clip seat 312 semi-unlocks the locking shielding plug 313, an elastic force is applied to the locking shielding clip seat 312 through the compression spring 317, so that the locking shielding clip seat 312 abuts against the locking shielding plug 313, and the relative movement between the locking shielding plug 313 and the locking shielding clip seat 312 is used to clean the oxide layer on the side contact surface of the locking shielding plug 313 through the inner scraping part 319, and the oxide layer on the contact surface of the locking shielding clip seat 312 is cleaned through the outer scraping part 318, and the two can achieve effective conductive contact.

[0047] Compared with the prior art, in the embodiment of the present invention, by combining the design of the shielding and locking component 31 with the arc-shaped spring piece 32 and the arc-shaped plug 33, a complete shielding structure can be formed to achieve effective electromagnetic shielding of the connection position between the door body 1 and the door frame 2. At the same time, a symmetrically openable and closable locking shielding clip seat 312 is arranged in the shielding and locking component 31. After the locking shielding clip seat 312 locks and clamps the locking shielding plug 313, it can have the effects of both a lock body and a shielding structure. And when the locking shielding clip seat 312 expands outward to fully unlock the locking shielding plug 313, the resistance when the door body 1 is opened can be greatly reduced. In addition, after the locking shielding clip seat 312 semi-unlocks the locking shielding plug 313, through the cooperation of the outer scraping part 318 and the inner scraping part 319, the oxide layer at the contact position between the locking shielding clip seat 312 and the locking shielding plug 313 can be cleaned when the door body 1 is opened, ensuring that the two can achieve effective conductive contact, and further ensuring the electromagnetic shielding effect.

[0048] As a preferred technical solution of this embodiment, the shielding and locking component 31 and the arc-shaped spring piece 32 can be combined into a complete rectangular structure. There is conductive contact between the shielding and locking component 31 and the arc-shaped spring piece 32. The shielding and locking mechanism 3 further includes an arc-shaped insertion knife 33, which is fixedly installed on the door frame 2, and the arc-shaped insertion knife 33 can be inserted into the arc-shaped spring piece 32. Specifically, both the shielding and locking component 31 and the arc-shaped spring piece 32 are fixedly installed on the back of the door body 1, and the arc-shaped spring piece 32 is located at the four corners of the back of the door body 1, and the shielding and locking component 31 is located between adjacent shielding and locking components 31. After the door body 1 is closed, the arc-shaped insertion knife 33 is inserted into the arc-shaped spring piece 32, which can achieve electromagnetic shielding at the corner position where the door body 1 contacts the door frame 2.

[0049] In an embodiment provided by the present invention, the shielding and locking component 31 further includes a mounting seat 311, which is fixedly installed on the back of the door body 1. The locking shielding clip seats 312 are symmetrically arranged inside the mounting seat 311. The locking shielding insertion knife 313 is fixedly installed on the front of the door frame 2. The driving component is movably installed on the mounting seat 311. Specifically, the driving component can drive the locking shielding clip seat 312 to move under the drive of the opening and closing grip 5, and adjust the relative position between the locking shielding clip seat 312 and the locking shielding insertion knife 313. After the driving component drives the two groups of locking shielding clip seats 312 to move to lock and clamp the locking shielding insertion knife 313, it can have the effects of both a lock body and a shielding structure; when the driving structure drives the two groups of locking shielding clip seats 312 to move outward to fully unlock the locking shielding insertion knife 313, the resistance when the door body 1 is opened can be greatly reduced; according to needs, the driving component drives the two groups of locking shielding clip seats 312 to move outward to semi-unlock the locking shielding insertion knife 313, and when the door body 1 is opened, the outer scraping part 318 can clean the oxide layer on the contact surface of the locking shielding clip seat 312.

[0050] In another embodiment provided by the present invention, the locking shield plug 313 and the locking shield holder 312 are provided with mating contact surfaces. An inner scraping portion 319 is formed on the locking shield holder 312 for cleaning the oxide layer on the contact surface of the locking shield plug 313. An outer scraping portion 318 is formed on the locking shield plug 313 for cleaning the oxide layer on the contact surface of the locking shield holder 312. Specifically, the locking shield plug 313 is inserted into the shielding locking assembly 31. After the two sets of locking shield holders 312 lock the locking shield plug 313, they conduct electrical contact through the contact surfaces to achieve electromagnetic shielding between the door body 1 and the door frame 2. After the locking shield holder 312 semi-unlocks the locking shield plug 313, an elastic force is applied to the locking shield holder 312 through the compression spring 317 to make the locking shield holder 312 abut against the locking shield plug 313. When the door body 1 is opened, the locking shield plug 313 and the locking shield holder 312 move relative to each other. The inner scraping portion 319 abuts against the contact surface of the locking shield plug 313 and can clean the oxide layer on the contact surface of the locking shield plug 313 during movement. The outer scraping portion 318 abuts against the contact surface of the locking shield holder 312 and can clean the oxide layer on the contact surface of the locking shield holder 312 during movement.

[0051] As can be seen from the above embodiments, the oxide layer residues cleaned by the outer scraping portion 318 and the inner scraping portion 319 on the contact surfaces of the locking shield holder 312 and the locking shield plug 313 will remain in the contact surfaces of the locking shield holder 312 and the locking shield plug 313. Especially for the locking shield holder 312 and the locking shield plug 313 in the horizontally arranged shielding locking assembly 31, there is a problem that it is difficult to discharge the oxide layer residues. For this, the following embodiments are proposed to solve this problem.

[0052] In another embodiment provided by the present invention, for the vertically arranged shielding locking assembly 31, the cleaned oxide layer residues fall into the corresponding arc-shaped spring pieces 32. A slag discharge groove is formed at the bottom of the arc-shaped spring piece 32 to discharge the oxide layer residues in the vertically arranged shielding locking assembly 31. Uniformly distributed 3111 are provided on both the locking shield holder 312 in the horizontally arranged shielding locking assembly 31 and the lower locking shield plug 313. The 3111 on the lower locking shield holder 312 correspond to the position of the inner scraping portion 319, and the 3111 on the locking shield plug 313 correspond to the position of the outer scraping portion 318 above the locking shield plug 313. When the door body 1 is opened, it drives the locking shield plug 313 to move towards the outlet position of the locking shield holder 312. When the locking shield plug 313 moves, the outer scraping portions 318 on the upper and lower sides can push the oxide layer residues towards the outlet position of the locking shield holder 312, and finally make the oxide layer residues above the locking shield plug 313 discharged along the 3111 on the locking shield plug 313, and the oxide layer residues below the locking shield plug 313 are discharged along the 3111 on the locking shield holder 312.

[0053] In another embodiment provided by the present invention, the driving assembly includes a transmission bracket 314 and a connecting sleeve 315. The connecting sleeve 315 is fixedly connected to the transmission bracket 314. A connecting rod 316 is movably sleeved in the connecting sleeve 315. The connecting rod 316 is fixedly connected to the locking shielding clamp seat 312. A compression spring 317 is movably sleeved outside the connecting rod 316. Specifically, there are two sets of the transmission bracket 314, the connecting sleeve 315, the connecting rod 316, and the compression spring 317, and they respectively cooperate with the two locking shielding clamp seats 312 in the shielding locking assembly 31. The transmission bracket 314 drives the connecting sleeve 315 to move and makes the connecting sleeve 315 abut against each other, which can drive the locking shielding clamp seat 312 to move to lock and clamp the locking shielding plug 313. The transmission bracket 314 drives the connecting sleeve 315 to move outward, and drives the locking shielding clamp seat 312 to move outward through the transmission of the connecting rod 316, so that the locking shielding clamp seat 312 can fully unlock the locking shielding plug 313. At this time, the distance between the two locking shielding clamp seats 312 is greater than the width of the locking shielding plug 313. The transmission bracket 314 pulls the locking shielding clamp seat 312 to move outward to half of the full unlocking position. At this time, the locking shielding clamp seat 312 is in a semi-unlocking state for the locking shielding plug 313. By applying an elastic force to the locking shielding clamp seat 312 through the compression spring 317, the locking shielding clamp seat 312 can be abutted against the locking shielding plug 313, which is convenient for cleaning the oxide layer on the contact surface subsequently. The driving assembly further includes a bidirectional screw 3110, which is arranged on the side of the mounting seat 311 close to the door body 1, and threads that cooperate with the two transmission brackets 314 and are reverse-rotating are provided on the bidirectional screw 3110. The directions of the threads at both ends of the bidirectional screw 3110 are determined to ensure that the locking shielding clamp seats 312 in the four shielding locking assemblies 31 can move inward or outward synchronously.

[0054] In still another embodiment provided by the present invention, the compression spring 317 is movably sleeved at one end of the outside of the connecting rod 316 close to the locking shielding clamp seat 312, and the compression spring 317 can continuously apply an elastic force to the locking shielding clamp seat 312. Specifically, after the locking shielding clamp seat 312 semi-unlocks the locking shielding plug 313, by applying an elastic force to the locking shielding clamp seat 312 through the compression spring 317, the locking shielding clamp seat 312 is abutted against the locking shielding plug 313. When the door body 1 is opened, relative movement occurs between the locking shielding plug 313 and the locking shielding clamp seat 312, and the oxide layer on the contact surfaces of the locking shielding clamp seat 312 and the locking shielding plug 313 can be cleaned by the outer scraping part 318 and the inner scraping part 319.

[0055] In another embodiment provided by the present invention, opening and closing grips 5 are rotatably connected to both the front and back surfaces of the door body 1. A transmission mechanism 4 is provided on the back surface of the door body 1. When the opening and closing grip 5 rotates, it can drive the locking and shielding clamp seat 312 in the shielding locking assembly 31 to open and close through the transmission of the transmission mechanism 4. Specifically, on both the inside and outside of the door body 1, the locking and shielding clamp seat 312 in the four groups of shielding locking assemblies 31 can be driven by the opening and closing grip 5 to open and close, realizing the opening and closing of the door body 1, and the structure is simple and reliable.

[0056] In an embodiment provided by the present invention, the transmission mechanism 4 includes an adjustment shaft 41 which is inserted through the door body 1, a transmission shaft which is movably installed on the back surface of the door body 1, and a bevel gear set which is arranged on the transmission shaft for changing the power direction. Specifically, the adjustment shaft 41 is made of a non-metallic material, preferably polyamide material, to avoid the conductor penetrating the inside and outside of the door body 1 from damaging the electromagnetic shielding effect. Two groups of opening and closing grips 5 are respectively fixedly installed at the front end and the rear end of the adjustment shaft 41; the transmission shaft includes a horizontal transmission shaft 43 which is horizontally and movably installed on the back surface of the door body 1, and both ends of the horizontal transmission shaft 43 are fixedly connected to the bidirectional screw 3110 in the two groups of vertical shielding locking assemblies 31. The transmission shaft also includes longitudinal transmission shafts 46 which are located on the upper and lower sides of the horizontal transmission shaft 43 and are vertically and movably installed on the back surface of the door body 1. The two groups of longitudinal transmission shafts 46 are respectively fixedly connected to the bidirectional screw 3110 in the two groups of horizontal shielding locking assemblies 31; the bevel gear set includes a driving bevel gear 42 which is fixedly sleeved on the rear end of the adjustment shaft 41, a first driven bevel gear 44 which is fixedly sleeved on the horizontal transmission shaft 43 and meshes with the driving bevel gear 42, a second driven bevel gear 47 which is fixedly sleeved on the end of the longitudinal transmission shaft 46 far away from the shielding locking assembly 31, and a driving bevel gear 45 which is fixedly sleeved on the horizontal transmission shaft 43 and meshes with the second driven bevel gear 47; when the opening and closing grip 5 drives the adjustment shaft 41 to rotate, the driving bevel gear 42, the horizontal transmission shaft 43, the driving bevel gear 45 and the second driven bevel gear 47 rotate, and the horizontal transmission shaft 43 and the longitudinal transmission shaft 46 can be synchronously driven to rotate, thereby driving the bidirectional screw 3110 to rotate and realizing the adjustment of the position of the locking and shielding clamp seat 312.

[0057] As can be seen from the above embodiments, the locking and shielding clamp seat 312 has three working states for the locking and shielding plug 313, namely locking, full unlocking and semi-unlocking. Therefore, after each position adjustment of the locking and shielding clamp seat 312, stable positioning is required to ensure the stable working state of the locking and shielding clamp seat 312 after adjustment. For this, the following embodiments are proposed to solve this problem.

[0058] In an embodiment provided by the present invention, a positioning mechanism 6 is provided on the front surface of the door body 1 at the position of the opening and closing grip 5 for positioning the opening and closing grip 5 after it rotates in place. Specifically, since the locking shielding clip seat 312 has three working states for the locking shielding plug cutter 313, namely, the locked state, the fully unlocked state, and the semi-unlocked state, when the opening and closing grip 5 drives the adjusting shaft 41 to rotate, it can cooperate with the positioning arc-shaped protrusions 62 at different positions through the positioning elastic clip 64 to achieve the locking of the opening and closing grip 5 and thus the locking of different states of the locking shielding clip seat 312 after adjustment.

[0059] In another embodiment provided by the present invention, the positioning mechanism 6 includes a positioning disk 61 fixedly sleeved on the front end of the adjusting shaft 41, positioning arc-shaped protrusions 62 evenly distributed on the circumference of the positioning disk 61, a positioning seat 63 fixedly installed on the door body 1, and a positioning elastic clip 64 arranged on the inner wall of the positioning seat 63. When the positioning disk 61 rotates, the positioning arc-shaped protrusions 62 on its circumference can be sequentially clamped on the positioning elastic clip 64. Specifically, the positioning disk 61 is located on the central axis of the adjusting shaft 41, and the number of the positioning arc-shaped protrusions 62 is three groups. The cooperation of the three groups of positioning arc-shaped protrusions 62 and the positioning elastic clip 64 can respectively achieve the locking of the positions after the adjustment of the three states of the locking shielding clip seat 312, namely, locked, fully unlocked, and semi-unlocked. The positioning seat 63 is located on the central axis of the adjusting shaft 41 to ensure that the positioning elastic clip 64 on the inner wall of the positioning seat 63 can stably cooperate with multiple positioning arc-shaped protrusions 62.

[0060] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above-mentioned drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A darkroom shielding door lock body structure, comprising a door frame (2) and a door body (1) hinged to the door frame (2), characterized in that, Further comprising: A shielding and locking mechanism (3), which is arranged between the door body (1) and the door frame (2), and includes a combined shielding and locking component (31) and an arc-shaped reed (32); The shielding and locking component (31) includes a locking and shielding plug cutter (313), locking and shielding clamp seats (312) located on both sides of the locking and shielding plug cutter (313), and a driving component for driving the movement of the locking and shielding clamp seats (312); After the driving component drives the locking and shielding clamp seats (312) to move and clamp the locking and shielding plug cutter (313), locking and electrical conduction contact are achieved between the door body (1) and the door frame (2); The driving component drives the locking and shielding clamp seats (312) to move to fully unlock the locking and shielding plug cutter (313) for reducing the resistance when the door body (1) is opened; when the driving component drives the locking and shielding clamp seats (312) to semi-unlock the locking and shielding plug cutter (313), the oxide layer at the contact position of the locking and shielding clamp seats (312) and the locking and shielding plug cutter (313) can be cleaned when the door body (1) is opened.

2. The structure of a darkroom shielding door lock body according to claim 1, characterized in that, The shielding and locking component (31) and the arc-shaped reed (32) can be combined into a complete rectangular structure, and electrical conduction contact is achieved between the shielding and locking component (31) and the arc-shaped reed (32). The shielding and locking mechanism (3) further includes an arc-shaped plug cutter (33), which is fixedly installed on the door frame (2), and the arc-shaped plug cutter (33) can be inserted into the arc-shaped reed (32).

3. The structure of a darkroom shielding door lock body according to claim 1, characterized in that, The shielding and locking component (31) further includes a mounting seat (311), which is fixedly installed on the back of the door body (1). The locking and shielding clamp seats (312) are symmetrically arranged inside the mounting seat (311). The locking and shielding plug cutter (313) is fixedly installed on the front of the door frame (2), and the driving component is movably installed on the mounting seat (311).

4. The structure of the darkroom shielding door lock body according to claim 1, characterized in that, The locking and shielding plug cutter (313) and the locking and shielding clamp seats (312) are provided with mutually cooperating contact surfaces. The locking and shielding clamp seats (312) are provided with inner scraping parts (319) for cleaning the oxide layer on the contact surface of the locking and shielding plug cutter (313). The locking and shielding plug cutter (313) is provided with outer scraping parts (318) for cleaning the oxide layer on the contact surface of the locking and shielding clamp seats (312).

5. The structure of a darkroom shielding door lock body according to claim 1, characterized in that, The driving component includes a transmission bracket (314) and a connecting sleeve (315). The connecting sleeve (315) is fixedly connected to the transmission bracket (314). A connecting rod (316) is movably sleeved in the connecting sleeve (315). The connecting rod (316) is fixedly connected to the locking and shielding clamp seats (312). A compression spring (317) is movably sleeved outside the connecting rod (316).

6. The structure of a darkroom shielding door lock body according to claim 5, characterized in that, The compression spring (317) is movably sleeved at one end of the connecting rod (316) close to the locking and shielding clamp seats (312), and the compression spring (317) can continuously apply elastic force to the locking and shielding clamp seats (312).

7. The structure of a darkroom shielding door lock body according to claim 1, characterized in that, The front and back of the door body (1) are both rotatably connected with opening and closing grips (5). A transmission mechanism (4) is arranged on the back of the door body (1). When the opening and closing grip (5) rotates, it can drive the locking and shielding clamp seat (312) in the shielding locking assembly (31) to open and close through the transmission of the transmission mechanism (4).

8. The structure of a darkroom shielding door lock body according to claim 7, characterized in that, The transmission mechanism (4) includes an adjusting shaft (41) which is inserted through the door body (1), a transmission shaft which is movably installed on the back of the door body (1), and a bevel gear set which is arranged on the transmission shaft and used for changing the power direction.

9. The structure of the darkroom shielding door lock body according to claim 8, characterized in that, A positioning mechanism (6) located at the position of the opening and closing grip (5) is arranged on the front of the door body (1) and is used for positioning the opening and closing grip (5) after it rotates in place.

10. A darkroom shielding door lock body structure according to claim 9, characterized in that, The positioning mechanism (6) includes a positioning disc (61) which is fixedly sleeved on the front end of the adjusting shaft (41), positioning arc-shaped protrusions (62) which are evenly distributed on the circumference of the positioning disc (61), a positioning seat (63) which is fixedly installed on the door body (1), and a positioning elastic clip (64) which is arranged on the inner wall of the positioning seat (63). When the positioning disc (61) rotates, the positioning arc-shaped protrusions (62) on its circumference can be sequentially clamped on the positioning elastic clip (64).

Images