Unlocking mechanism and magnetic shielding cabin

Abstract

The invention relates to the technical field of magnetic shielding, and discloses an unlocking mechanism and a magnetic shielding cabin. The unlocking mechanism comprises a quick release seat mounting plate which is located below the cabin body and is suitable for being fixedly connected with the cabin body; the quick release seat is arranged on the lower surface of the quick release seat mounting plate and is suitable for being connected with a driving part; one of the quick release seat and the quick release seat mounting plate is provided with a lug boss, and the other one is provided with a groove matched with the lug boss; the quick release seat is inserted into the groove through the convex part and is connected with the lower surface of the quick release seat mounting plate; the locking piece is located on one side of the quick release seat and has a locking state and an unlocking state, and in the locking state, the locking piece abuts against the end, away from the quick release seat mounting plate, of the quick release seat, so that the quick release seat and the quick release seat mounting plate are kept locked; and in the unlocking state, the locking piece is separated from one end, far away from the quick release seat mounting plate, of the quick release seat, so that the quick release seat and the quick release seat mounting plate are unlocked. In an unlocking state, the quick release seat is separated from the cabin body due to gravity, and the driving piece cannot hinder opening of the cabin door.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic shielding, and in particular to an unlocking mechanism and a magnetic shielding cabin. Background Art

[0002] A magnetic shielding cabin is a device that can shield external magnetic signals and create a uniform, near-zero magnetic environment inside. Specifically, the magnetic shielding cabin includes a cabin door and a cabin body made of high-permeability materials, so it can shield static magnetic fields and low-frequency alternating magnetic fields from the outside world. When the door is closed, the contact area between the cabin body and the cabin door is not provided with high-permeability materials. Therefore, to ensure that the magnetic shielding cabin can form a complete magnetic shielding area when the door is closed, slots and reeds are usually provided at the contact position between the cabin body and the cabin door. In this way, it is ensured that the cabin body and the cabin door can achieve good conduction at the contact point, meeting the requirements of magnetic shielding.

[0003] However, to ensure effective conduction, the friction between the slot and the reed is usually relatively large, so a driver is generally used to automatically open and close the door. However, if the driver fails, it will hinder the emergency door opening operation, which may lead to a dangerous situation. Summary of the Invention

[0004] In view of this, the present invention provides an unlocking mechanism and a magnetic shielding cabin to solve the problem that the door cannot be opened urgently due to a failure of the door opening and closing driving component of the magnetic shielding cabin.

[0005] In a first aspect, the present invention provides an unlocking mechanism for a magnetically shielded cabin, the magnetically shielded cabin comprising a cabin door, a cabin body, and a driving member, one end of the driving member being connected to the cabin body and the other end being adapted to drive the cabin door to move, comprising:

[0006] A quick-release seat mounting plate is located below the cabin and is adapted to be fixedly connected to the cabin;

[0007] A quick-release seat is provided on the lower surface of the quick-release seat mounting plate and is suitable for connecting with the driving member; one of the quick-release seat and the quick-release seat mounting plate is provided with a protrusion, and the other is provided with a groove for use with the protrusion; the quick-release seat is connected to the lower surface of the quick-release seat mounting plate by inserting the protrusion into the groove;

[0008] A locking piece is located on one side of the quick-release seat and has a locked state and an unlocked state. In the locked state, the locking piece abuts against an end of the quick-release seat away from the quick-release seat mounting plate to lock the quick-release seat and the quick-release seat mounting plate; in the unlocked state, the locking piece is disengaged from the end of the quick-release seat away from the quick-release seat mounting plate to unlock the quick-release seat and the quick-release seat mounting plate.

[0009] Beneficial effect: The connection method between the quick-release seat and the quick-release seat mounting plate through the cooperation of the protrusion and the groove can not only ensure the stability of the two in the connected state, but also reduce the difficulty of disassembling the two. Specifically, in the locked state, because the locking member abuts against the end of the quick-release seat away from the quick-release seat mounting plate, the quick-release seat can overcome its own gravity and remain connected to the quick-release seat mounting plate. In this way, the driving member can be connected to the cabin through the quick-release seat, so that the force generated by the driving member can always be applied to the cabin door, thereby driving the cabin door to complete the opening or closing operation. Conversely, in the unlocked state, because the locking member no longer provides support, the quick-release seat will be separated from the cabin body due to its own gravity, and at the same time, the driving member will also be disconnected from the cabin body. In this way, even if the driving member fails, the driving member will not affect the smooth opening of the cabin door, meeting the needs of safe evacuation of personnel in the magnetic shield cabin in an emergency.

[0010] In an optional embodiment, the locking member is rotatably connected to the quick-release seat mounting plate, and a limiting protrusion is provided on the locking member; in the locked state, at least part of the limiting protrusion is passed through the quick-release seat; in the unlocked state, the limiting protrusion is disengaged from the quick-release seat.

[0011] Beneficial Effects: The locking member and the quick-release seat mounting plate are connected by rotation, allowing the operator to switch the locking member between the locked and unlocked states with a simple rotation, thereby improving the convenience of operation. The limiting protrusion provided on the locking member has the following specific functions: in the locked state, at least part of the limiting protrusion is inserted into the quick-release seat, providing reliable limiting support for the quick-release seat, further enhancing the stability of the connection between the quick-release seat and the quick-release seat mounting plate, and ensuring that the entire connection structure will not accidentally separate due to factors such as vibration and external force when the driver drives the cabin door to open or close. When in the unlocked state, the limiting protrusion quickly disengages from the quick-release seat, allowing the quick-release seat to be quickly separated from the quick-release seat mounting plate, meeting the need for emergency door opening and providing a strong guarantee for the rapid evacuation of personnel in an emergency.

[0012] In an optional embodiment, the locking member includes a rotating seat and a rotating rod. The rotating seat is arranged on the quick-release seat mounting plate, and a pin is provided on its lower surface along its thickness direction. The rotating rod is provided with a first through hole for use with the pin, and the pin passes through the first through hole and is connected to the fastener.

[0013] Beneficial effect: Through the cooperation of the pin shaft, the first through hole and the fastener, the rotating rod can be flexibly rotated around the pin shaft while ensuring the stability of the connection between the rotating rod and the rotating seat.

[0014] In an optional embodiment, a support seat is further provided on the quick-release seat mounting plate, the support seat is located on one side of the quick-release seat and a second through hole is provided on the support seat; in the locked state, the limiting protrusion passes through the second through hole, and part of the limiting protrusion is passed through the quick-release seat.

[0015] Beneficial Effects: By adding a support base to the quick-release mounting plate and providing a second through-hole in the support base, the limiting protrusion can pass through the second through-hole in the locked state, with a portion of the limiting protrusion located within the quick-release base, thus ensuring a precise fit between the locking member and the quick-release base. Furthermore, in the locked state, the support base can partially absorb the pressure from the quick-release base for the limiting protrusion, reducing the possibility of deformation of the limiting protrusion due to excessive force.

[0016] In an optional embodiment, an extension rod is provided at one end of the rotating rod away from the rotating seat, the extension rod is arranged at an angle to the rotating rod, the end of the extension rod away from the rotating rod is located outside the positive projection of the quick-release seat mounting plate in its thickness direction, and a grip portion is provided at the end of the extension rod away from the rotating rod.

[0017] Beneficial Effects: Compared to directly rotating the rotating rod, the extension rod is positioned at the end of the rotating rod away from the rotating seat, and the end of the extension rod away from the rotating rod extends out of the quick-release seat mounting plate. This structural arrangement not only optimizes space utilization but also provides greater leverage for operation, making locking and unlocking operations more labor-saving. In addition, a grip is provided at the end of the extension rod away from the rotating rod, enhancing the operator's feel and control when rotating the extension rod, improving the safety and convenience of operation.

[0018] In a second aspect, the present invention further provides a magnetic shielding cabin, comprising:

[0019] a cabin with a hatch on one side;

[0020] a hatch adapted to close and seal the hatch;

[0021] The aforementioned unlocking mechanism, wherein the quick-release seat mounting plate is located below the cabin body and is fixedly connected to the cabin body;

[0022] The door opening mechanism includes a driving member, a fixed end of which is connected to the quick-release seat, and a driving end of which is suitable for driving the cabin door to move relative to the cabin body so as to open or close the cabin door.

[0023] Beneficial Effects: By equipping the magnetic shielding cabin with the aforementioned unlocking mechanism, on the one hand, the driver can be connected to the cabin door, allowing the door to be opened and closed during daily use of the magnetic shielding cabin under the drive of the driver, ensuring the airtightness and magnetic shielding effectiveness of the magnetic shielding cabin under normal circumstances. On the other hand, the driver can be quickly separated from the cabin body in an emergency, preventing the driver from obstructing the smooth opening of the cabin door, meeting the requirements of safe evacuation of personnel in the magnetic shielding cabin in an emergency.

[0024] In an optional embodiment, the door opening mechanism also includes a drive member mounting plate, which is located below the cabin body and connected to the cabin body through a connecting member; the unlocking mechanism and the drive member are located between the cabin body and the drive member mounting plate; a gap is left between the fixed end of the drive member and the drive member mounting plate, and in the unlocked state, the quick-release seat can be separated from the quick-release seat mounting plate under the action of gravity.

[0025] Beneficial effect: In the unlocked state, the quick-release seat can be separated from the quick-release seat mounting plate under the action of gravity, which means that the gap in the present invention is greater than the length of the protrusion, which can enable the protrusion between the quick-release seat and the quick-release seat mounting plate to completely disengage from the groove in an emergency, ensuring that the driving part will not interfere with the door opening action after the quick-release seat is separated from the quick-release seat mounting plate, thereby improving the efficiency of emergency door opening.

[0026] In an optional embodiment, the connecting member includes a pair of oppositely arranged side panels; the door opening mechanism also includes a door bottom plate, and the cabin door is arranged on the upper surface of the door bottom plate at one end away from the hatch; the door bottom plate is located between the cabin body and the drive member mounting plate, and is slidingly connected to a pair of side panels; the door bottom plate and the driving end of the drive member are connected through a transmission assembly.

[0027] Beneficial Effects: Sliding the door bottom plate to a pair of side panels ensures uniform force distribution during sliding, improving the door's smooth opening and closing. Furthermore, positioning the door bottom plate between the cabin body and the driver mounting plate improves space utilization and makes the overall structure of the magnetically shielded cabin more compact.

[0028] In an optional embodiment, the transmission assembly includes a block, a transmission support, a pair of clamping jaws and a pair of guide slide rails arranged on the driving member mounting plate; the block is arranged on the lower surface of the door bottom plate; the transmission support is connected to the driving end of the driving member; a pair of clamping jaws are located on opposite sides of the transmission support and one end is rotatably connected to the transmission support, and a limiting space for accommodating the block is formed between the free ends of a pair of clamping jaws and the transmission support; the block is suitable for abutting against the free ends of a pair of clamping jaws or the transmission support; a pair of guide slide rails and a pair of clamping jaws are arranged in a one-to-one correspondence and are slidably connected, and the guide slide rails include a first slide rail and a second slide rail, the length direction of the first slide rail is consistent with the opening and closing direction of the cabin door, the second slide rail is located at one end of the first slide rail close to the cabin door and is inclined in the direction away from the transmission support; the second slide rail has a smooth transition with the first slide rail.

[0029] Advantageous Effects: Because the distance between the closed and fully opened positions of the hatch is relatively large, using only the driver to drive the hatch opening would require a relatively long time. However, the present invention, through the coordination of a stopper, a pair of clamping claws, and a pair of guide rails, enables the driver to function only during the initial opening and final closing stages. In other words, the driver is only used to overcome the increased friction between the hatch body and the hatch during the opening or closing process. Once the hatch body and hatch are fully separated, the hatch opening and closing process can be accelerated manually.

[0030] In an optional embodiment, the magnetic shielding cabin has an open state and a closed state; in the open state, the block is located in the limit space and abuts against the transmission support, and the block moves to a predetermined position under the drive of the driving member, and then the block moves in a direction away from the cabin body and disengages from the limit space between the free ends of a pair of the clamps; in the closed state, the block moves in a direction close to the cabin body and enters into a predetermined position in the limit space between the free ends of a pair of the clamps, and then the free ends of the pair of the clamps approach each other under the drive of the driving member and abut against the block, and then the block drives the cabin door close to the cabin body under the drive of the driving member.

[0031] Beneficial effect: The present invention realizes the automatic opening and closing operation of the cabin door by setting up a magnetic shielding cabin with two states of open and closed, utilizing the position change of the block in the limited space and the driving action of the driving part. This not only improves the convenience and efficiency of operation, but also ensures the accuracy and stability of the cabin door movement, while effectively protecting the sealing performance of the magnetic shielding cabin.

[0032] In an optional embodiment, a guide rail is provided on the side wall of the door bottom plate facing the side panel, and the length direction of the guide rail is consistent with the opening and closing direction of the cabin door; the side panel is provided with a plurality of rollers, and the plurality of rollers are arranged on opposite sides of the guide rail and are rollingly connected to the guide rail.

[0033] Benefits: Compared to sliding connections, the door bottom panel's connection to the side panels via guide rails and rollers reduces friction, minimizes wear between the guide rails and rollers, and extends their service life. Furthermore, because the rollers roll smoothly on the guide rails, they effectively prevent the door from jamming or stalling during opening and closing.

[0034] In an optional embodiment, an auxiliary door opening mechanism is further included, which includes a lead screw and a handwheel arranged on the lead screw; the lead screw is arranged on the lower surface of the door bottom plate away from the unlocking mechanism, the length direction of the lead screw is consistent with the opening and closing direction of the cabin door, and the lead screw is provided with a lead screw nut that cooperates with the lead screw; the handwheel is located at the end of the lead screw away from the unlocking mechanism; a lead screw top block suitable for abutting against the lead screw nut is provided on the drive member mounting plate, the lead screw top block is located in the opposite direction of the opening of the cabin door, and at least part of the lead screw top block is located within the positive projection of the lead screw.

[0035] Beneficial effect: By arranging a lead screw on the lower surface of the door bottom plate at one end away from the unlocking mechanism, and cooperating the lead screw with the lead screw nut and the lead screw top block on the driver mounting plate, a reliable emergency door opening auxiliary mechanism is formed. In an emergency, the operator only needs to turn the handwheel, and the handwheel drives the lead screw to rotate, and the lead screw nut cooperating with the lead screw will move along the lead screw. Since the lead screw top block is located in the opposite direction of the hatch opening, when the lead screw nut comes into contact with the lead screw top block, the lead screw can generate a driving force to move the hatch door away from the cabin body through the interaction between the lead screw nut and the lead screw top block, thereby realizing the hatch door opening operation in an emergency, providing a strong guarantee for the rapid evacuation of personnel.

[0036] In an optional embodiment, the auxiliary door opening mechanism also includes a linear slide rail and a slider that slides with the linear slide rail, the linear slide rail is located on the lower surface of the door bottom plate and is arranged side by side with the screw; the slider is connected to the screw nut through a slider connecting plate, and the screw nut is suitable for abutting against the screw top block through the slider connecting plate.

[0037] Beneficial effect: The coordinated use of the linear guide rail and the slider can ensure that the door always moves smoothly along the predetermined path during the opening process, avoiding deviation or jitter caused by the rotation of the screw, and improving the stability of the device.

[0038] In an optional embodiment, the linear slide rails are a pair, the pair of linear slide rails are located on opposite sides of the lead screw, and the pair of sliders are connected to the lead screw nut through the slider connecting plate.

[0039] Beneficial effect: By setting up a pair of linear slide rails, the hatch can be more evenly constrained during the opening process, avoiding the uneven force and offset problems that may occur in a single linear slide rail, and improving the structural stability and reliability of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 This is a schematic structural diagram of a magnetic shielding cabin according to an embodiment of the present invention;

[0042] Figure 2 for Figure 1 A schematic cross-sectional view of a magnetic shielding cabin is shown;

[0043] Figure 3 This is a partial structural diagram of a magnetic shielding cabin according to an embodiment of the present invention;

[0044] Figure 4 This is a structural diagram of an unlocking mechanism according to an embodiment of the present invention;

[0045] Figure 5 This is a schematic structural diagram of an auxiliary door opening mechanism according to an embodiment of the present invention;

[0046] Figure 6 is a cross-sectional schematic diagram of an auxiliary door opening mechanism according to an embodiment of the present invention;

[0047] Figure 7 Schematic diagram of the structure of the transmission assembly of an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 1. Quick-release seat mounting plate; 2. Quick-release seat; 201. Raised portion; 3. Locking member; 301. Rotating seat; 302. Rotating rod; 3021. Positioning protrusion; 4. Fastener; 5. Support seat; 501. Second through hole; 6. Extension rod; 7. Grip; 8. Cabin; 801. Hatch; 9. Hatch door; 10. Door opening mechanism; 1001. Drive member; 1002. Drive member mounting plate; 1003. Door bottom plate; 10031. Stopper; 10032. Guide rail; 11. Connector; 1101. Side Plate; 11011, roller; 12, transmission assembly; 1201, transmission support; 1202, clamping claw; 1203, guide rail; 12031, first rail; 12032, second rail; 13, auxiliary door opening mechanism; 1301, screw; 1302, handwheel; 1303, screw nut; 1304, screw top block; 1305, linear slide; 1306, slider; 1307, slider connecting plate; 14, screw mounting plate; 15, bearing seat; 16, bearing lock nut; 17, flat key. DETAILED DESCRIPTION

[0050] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0051] Aiming at the problem that the door of a magnetic shielding cabin cannot be opened urgently due to a failure of a door opening and closing drive component of the magnetic shielding cabin, the present invention provides an unlocking mechanism and a magnetic shielding cabin.

[0052] The following combination Figures 1 to 7 , describing embodiments of the present invention.

[0053] According to an embodiment of the present invention, on the one hand, Figures 1 to 4 As shown, an unlocking mechanism is provided for a magnetic shielding cabin, which includes a cabin door 9, a cabin body 8 and a driving member 1001. One end of the driving member 1001 is connected to the cabin body 8, and the other end is suitable for driving the cabin door 9 to move, including: a quick-release seat mounting plate 1, a quick-release seat 2 and a locking member 3.

[0054] Specifically, the quick-release seat mounting plate 1 is located below the cabin body 8 and is suitable for being fixedly connected to the cabin body 8; the quick-release seat 2 is arranged on the lower surface of the quick-release seat mounting plate 1 and is suitable for being connected to the driving member 1001; one of the quick-release seat 2 and the quick-release seat mounting plate 1 is provided with a protrusion 201, and the other is provided with a groove for cooperating with the protrusion 201; the quick-release seat 2 is inserted into the groove through the protrusion 201 and is connected to the lower surface of the quick-release seat mounting plate 1; the locking member 3 is located on one side of the quick-release seat 2 and has a locked state and an unlocked state. In the locked state, the locking member 3 abuts against the end of the quick-release seat 2 away from the quick-release seat mounting plate 1, so that the quick-release seat 2 is locked with the quick-release seat mounting plate 1; in the unlocked state, the locking member 3 is disengaged from the end of the quick-release seat 2 away from the quick-release seat mounting plate 1, so that the quick-release seat 2 is unlocked with the quick-release seat mounting plate 1.

[0055] The connection between the quick-release base 2 and the quick-release base mounting plate 1, via the mating of the protrusion 201 and the groove, not only ensures stability when connected but also reduces the difficulty of disassembly. Specifically, in the locked state, the locking member 3 abuts the end of the quick-release base 2 facing away from the quick-release base mounting plate 1, allowing the quick-release base 2 to overcome its own gravity and remain connected to the quick-release base mounting plate 1. This allows the driver 1001 to be connected to the cabin 8 via the quick-release base 2. This ensures that the force generated by the driver 1001 is consistently applied to the hatch 9, thereby driving the hatch 9 to open or close. Conversely, in the unlocked state, the quick-release base 2 will separate from the cabin 8 due to its own gravity, and the driver 1001 will also be disconnected from the cabin 8. This ensures that even if the driver 1001 malfunctions, it will not affect the smooth opening of the hatch 9, thus meeting the requirements for safe evacuation of personnel in a magnetically shielded cabin in an emergency.

[0056] It should be noted that in this embodiment, the locking of the quick-release base 2 and the quick-release base mounting plate 1 means that the quick-release base 2 and the quick-release base mounting plate 1 maintain a stable connection. Similarly, in this embodiment, the unlocking of the quick-release base 2 and the quick-release base mounting plate 1 means that the quick-release base 2 is separated from the quick-release base mounting plate 1 under the action of its own gravity, thereby severing the existing connection with the quick-release base mounting plate 1.

[0057] According to one embodiment of the present invention, Figure 3 and Figure 4As shown, the locking member 3 is rotatably connected to the quick-release mounting plate 1. A stopper protrusion 3021 is provided on the locking member 3. In the locked state, at least a portion of the stopper protrusion 3021 extends through the quick-release mounting plate 2. In the unlocked state, the stopper protrusion 3021 is disengaged from the quick-release mounting plate 2. The rotational connection between the locking member 3 and the quick-release mounting plate 1 allows the operator to switch the locking member 3 between the locked and unlocked states with a simple rotation, improving operational convenience. The stopper protrusion 3021 on the locking member 3 serves the following functions: In the locked state, at least a portion of the stopper protrusion 3021 extends through the quick-release mounting plate 2, providing reliable support for the quick-release mounting plate 2 and further enhancing the stability of the connection between the quick-release mounting plate 2 and the quick-release mounting plate 1. This ensures that the entire connection structure will not accidentally separate due to vibration, external forces, or other factors when the driver 1001 drives the hatch 9 to open or close. When in the unlocked state, the limiting protrusion 3021 quickly disengages from the quick-release seat 2, allowing the quick-release seat 2 to be quickly separated from the quick-release seat mounting plate 1, meeting the need for emergency door opening and providing strong protection for the rapid evacuation of personnel in an emergency.

[0058] According to one embodiment of the present invention, Figure 4 As shown, the locking member 3 includes a rotating base 301 and a rotating rod 302. The rotating base 301 is mounted on the quick-release base mounting plate 1, and a pin is provided on its lower surface along its thickness. The rotating rod 302 is provided with a first through-hole for cooperating with the pin. The pin passes through the first through-hole and is connected to the fastener 4. This embodiment, through the cooperation of the pin, the first through-hole, and the fastener 4, enables the rotating rod 302 to flexibly rotate about the pin while ensuring the stability of the connection between the rotating rod 302 and the rotating base 301.

[0059] It should be noted that the connection between the rotating seat 301 and the quick-release seat mounting plate 1 in this embodiment can be a fixed connection or a detachable connection, and the present invention does not make any specific limitation on this.

[0060] According to one embodiment of the present invention, Figure 4As shown, the quick-release base mounting plate 1 is further provided with a support base 5, which is located on one side of the quick-release base 2 and has a second through-hole 501 defined therein. In the locked state, the limiting protrusion 3021 passes through the second through-hole 501, with a portion of the limiting protrusion 3021 positioned within the quick-release base 2. By adding the support base 5 to the quick-release base mounting plate 1 and providing the second through-hole 501 therein, this embodiment allows the limiting protrusion 3021 to pass through the second through-hole 501 and remain partially positioned within the quick-release base 2 in the locked state, thereby ensuring a precise fit between the locking member 3 and the quick-release base 2. Furthermore, in the locked state, the support base 5 can partially absorb the pressure from the quick-release base 2 from the limiting protrusion 3021, reducing the possibility of deformation of the limiting protrusion 3021 due to excessive force.

[0061] According to one embodiment of the present invention, Figure 1 and Figure 4 As shown, an extension rod 6 is provided at the end of the rotating rod 302 away from the rotating base 301. The extension rod 6 is arranged at an angle to the rotating rod 302. The end of the extension rod 6 away from the rotating rod 302 is located outside the orthographic projection of the quick-release base mounting plate 1 in the thickness direction of the extension rod 6. A grip portion 7 is also provided at the end of the extension rod 6 away from the rotating rod 302. Compared to directly rotating the rotating rod 302, providing the extension rod 6 at the end of the rotating rod 302 away from the rotating base 301 and extending the end of the extension rod 6 away from the rotating rod 302 out of the quick-release base mounting plate 1 not only optimizes space utilization but also provides greater leverage for operation, making locking and unlocking operations more labor-saving. In addition, the grip portion 7 is provided at the end of the extension rod 6 away from the rotating rod 302, enhancing the operator's feel and control when rotating the extension rod 6, improving the safety and convenience of operation.

[0062] According to an embodiment of the present invention, on the other hand, Figures 1 to 4 As shown, a magnetic shielding cabin is also provided, comprising: a cabin door 9, a cabin body 8, the above-mentioned unlocking mechanism and a door opening mechanism 10.

[0063] Specifically, a hatch 801 is provided on one side of the cabin body 8; the hatch 9 is suitable for closing and sealing the hatch 801; the quick-release seat mounting plate 1 is located below the cabin body 8 and is fixedly connected to the cabin body 8; the door opening mechanism 10 includes a driving member 1001, the fixed end of the driving member 1001 is connected to the quick-release seat 2, and the driving end of the driving member 1001 is suitable for driving the hatch 9 to move relative to the cabin body 8 so that the hatch 9 is opened or closed.

[0064] This embodiment, by equipping the magnetic shielding cabin with the aforementioned unlocking mechanism, can, on the one hand, connect the driver 1001 to the cabin door 9, allowing the cabin door 9 to be opened and closed during daily use of the magnetic shielding cabin under the drive of the driver 1001, thereby ensuring the airtightness and magnetic shielding effectiveness of the magnetic shielding cabin under normal circumstances. On the other hand, it can enable the driver 1001 to quickly separate from the cabin body 8 in an emergency, preventing the driver 1001 from obstructing the smooth opening of the cabin door 9, thereby meeting the requirements of safe evacuation of personnel in the magnetic shielding cabin in an emergency.

[0065] It should be noted that the driving member 1001 in this embodiment can be, but is not limited to, an electric push rod and a linear motor. Taking the electric push rod as an example, the driving end of the driving member 1001 is the telescopic end of the electric push rod.

[0066] According to one embodiment of the present invention, Figures 1 to 3 As shown, the door opening mechanism 10 also includes a driver mounting plate 1002, which is located below the cabin 8 and connected to the cabin 8 via a connector 11. The unlocking mechanism and driver 1001 are located between the cabin 8 and the driver mounting plate 1002. A gap is left between the fixed end of the driver 1001 and the driver mounting plate 1002. In the unlocked state, the quick-release seat 2 can be separated from the quick-release seat mounting plate 1 under the action of gravity. In the unlocked state, the quick-release seat 2 can be separated from the quick-release seat mounting plate 1 under the action of gravity. This means that the gap in the present invention is greater than the length of the protrusion 201, which can enable the protrusion 201 between the quick-release seat 2 and the quick-release seat mounting plate 1 to completely disengage from the groove in an emergency. This ensures that the driver 1001 will not interfere with the door opening action after the quick-release seat 2 is separated from the quick-release seat mounting plate 1, thereby improving the efficiency of emergency door opening.

[0067] According to one embodiment of the present invention, Figure 1 As shown, the connecting member 11 includes a pair of oppositely disposed side panels 1101; the door opening mechanism 10 also includes a door bottom panel 1003, with the hatch 9 disposed on the upper surface of the door bottom panel 1003 at the end away from the hatch 801; the door bottom panel 1003 is located between the cabin body 8 and the driver mounting plate 1002 and is slidably connected to the pair of side panels 1101; the door bottom panel 1003 is connected to the driving end of the driver 1001 via a transmission assembly 12. In this embodiment, the door bottom panel 1003 is slidably connected to the pair of side panels 1101, which ensures that the door bottom panel 1003 is evenly stressed during the sliding process, thereby improving the smoothness of the hatch 9 during opening and closing. In addition, arranging the door bottom panel 1003 between the cabin body 8 and the driver mounting plate 1002 can improve space utilization and make the overall structure of the magnetic shielding cabin more compact.

[0068] According to one embodiment of the present invention, Figure 1As shown, a guide rail 10032 is provided on the side wall of the door bottom panel 1003 facing the side panel 1101. The length of the guide rail 10032 aligns with the opening and closing direction of the hatch door 9. The side panel 1101 is provided with multiple rollers 11011, which are arranged on opposite sides of the guide rail 10032 and are in rolling connection with the guide rail 10032. Compared to a sliding connection, the connection between the door bottom panel 1003 and the side panel 1101 via the guide rail 10032 and rollers 11011 reduces friction, minimizes wear between the guide rail 10032 and rollers 11011, and extends the service life of both. Furthermore, because the rollers 11011 can roll smoothly on the guide rail 10032, it effectively prevents the hatch door 9 from jamming or stalling during opening and closing.

[0069] In one embodiment, the roller 11011 is a V-shaped roller 11011 , and the guide rail 10032 is a V-shaped guide rail 10032 .

[0070] According to one embodiment of the present invention, Figure 2 and Figure 7 As shown, the transmission assembly 12 includes a stopper 10031, a transmission support 1201, a pair of clamping jaws 1202, and a pair of guide rails 1203 arranged on the driver mounting plate 1002; the stopper 10031 is arranged on the lower surface of the door bottom plate 1003; the transmission support 1201 is connected to the driving end of the driver 1001; the pair of clamping jaws 1202 are located on opposite sides of the transmission support 1201 and one end is rotatably connected to the transmission support 1201, and a limited space for accommodating the stopper 10031 is formed between the free ends of the pair of clamping jaws 1202 and the transmission support 1201 ... 0031 is suitable for abutting against the free ends of a pair of clamps 1202 or the transmission support 1201; a pair of guide rails 1203 are arranged in a one-to-one correspondence with the pair of clamps 1202 and are slidably connected, and the guide rails 1203 include a first rail 12031 and a second rail 12032. The length direction of the first rail 12031 is consistent with the opening and closing direction of the cabin door 9, and the second rail 12032 is located at the end of the first rail 12031 close to the cabin door 9 and is inclined toward the direction away from the transmission support 1201; there is a smooth transition between the second rail 12032 and the first rail 12031.

[0071] Because the distance between the closed and fully opened positions of the hatch 9 is relatively large, the time required to open the hatch 9 using only the driver 1001 is relatively long. However, the present invention, through the coordinated use of the stopper 10031, the pair of clamping jaws 1202, and the pair of guide rails 1203, allows the driver 1001 to function only during the initial opening and closing stages. In other words, the driver 1001 is only used to overcome the significant friction generated between the cabin 8 and the hatch 9 during the opening or closing process. It should be noted that to ensure that the joint between the cabin 8 and the hatch 9 effectively shields external magnetic signals, a spring is provided at the joint. Consequently, significant friction is generated between the cabin 8 and the hatch 9 during the opening or closing process. However, when the cabin 8 and the hatch 9 are fully separated, the opening and closing of the hatch 9 can be accelerated manually.

[0072] According to one embodiment of the present invention, the magnetic shielding cabin has an open state and a closed state; in the open state, the stop block 10031 is located in the limit space and abuts against the transmission support 1201, and the stop block 10031 moves to a predetermined position under the drive of the driving member 1001, and then the stop block 10031 moves in a direction away from the cabin body 8 and disengages from the limit space between the free ends of a pair of jaws 1202; in the closed state, the stop block 10031 moves in a direction close to the cabin body 8 and enters into a predetermined position in the limit space from between the free ends of a pair of jaws 1202, and then the free ends of the pair of jaws 1202 approach each other under the drive of the driving member 1001 and abut against the stop block 10031, and then the stop block 10031 drives the cabin door 9 close to the cabin body 8 under the drive of the driving member 1001. This embodiment realizes the automatic opening and closing operation of the cabin door 9 by providing a magnetic shielding cabin with two states of open and closed, utilizing the position change of the block 10031 in the limited space and the driving action of the driving member 1001. This not only improves the convenience and efficiency of the operation, but also ensures the accuracy and stability of the movement of the cabin door 9, while effectively protecting the sealing performance of the magnetic shielding cabin.

[0073] Specifically, the process of opening the hatch 9 in this embodiment is as follows:

[0074] A limiting space for the stopper 10031 is formed between the pair of clamping jaws 1202 and the transmission support 1201. The stopper 10031 is located within this limiting space, and the pair of clamping jaws 1202 are located on the first slide rail 10231. When the hatch door 9 needs to be opened, the driving member 1001 first drives the pair of clamping jaws 1202 to move on the first slide rail 10231. During this process, the transmission support 1201 and the stopper 10031 remain in contact. Therefore, the transmission support 1201 and the stopper 10031 transmit the force of the driving member 1001 to the door bottom plate 1003, and the door bottom plate 1003 drives the hatch door 9 to gradually move away from the cabin body 8. When the pair of clamping jaws 1202 moves from the first slide rail 10231 to the second slide rail 10232 under the action of the driver 1001, because the second slide rail 10232 is tilted in a direction away from the transmission support 1201, as the distance the pair of clamping jaws 1202 move along the second slide rail 10232 increases, the blocking effect of the pair of clamping jaws 1202 on the block 10031 gradually decreases. In other words, the distance between the pair of clamping jaws 1202 gradually increases, and the state of the pair of clamping jaws 1202 also changes from the initial closed state to the final released state. It should be noted that when the pair of clamping jaws 1202 is in the released state, the pair of clamping jaws 1202 is at the end of the second slide rail 12032 away from the first slide rail 12031. At this time, the position of the block 10031 is the predetermined position to which the block 10031 moves under the drive of the driver 1001 during the door opening process. It can be understood that once the state of the pair of jaws 1202 itself changes to the released state, the block 10031 can be separated from the restriction of the pair of jaws 1202. At this time, the operator can manually drive the hatch 9 to continue to move away from the cabin body 8, thereby expanding the distance between the hatch 9 and the cabin body 8 until the hatch 9 is fully opened.

[0075] The process of closing the hatch 9 in this embodiment is as follows:

[0076] The operator manually pushes the hatch door 9 toward the cabin body 8. When the stopper 10031 moves to a predetermined position between the pair of jaws 1202, the driver 1001 drives the pair of jaws 1202 to slide from the second slide rail 12032 to the first slide rail 12031 until they reach the end of the first slide rail 10231 away from the second slide rail 12032. During this process, the state of the pair of jaws 1202 also changes from the initial released state to the closed state. As a result, during the door closing process, the free ends of the pair of jaws 1202 maintain contact with the stopper 10031, thereby driving the hatch door 9 toward the cabin body 8 until the hatch door 9 and the cabin body 8 are fully engaged. It can be understood that at this point, the hatch door 9 and the cabin body 8 are fully engaged, and the driver 1001 stops operating.

[0077] It should be noted that in order to provide a higher level of automation for opening and closing the door and provide safety during the process, position sensors can be set at certain designated positions (the predetermined positions referred to above) to accurately obtain the position state of the block 10031, thereby achieving the purpose of precise control of the motion state of the driving member 1001.

[0078] According to one embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, it also includes an auxiliary door opening mechanism 13, which includes a screw 1301 and a handwheel 1302 arranged on the screw 1301; the screw 1301 is arranged on the lower surface of the door bottom plate 1003 away from the unlocking mechanism, and the length direction of the screw 1301 is consistent with the opening and closing direction of the cabin door 9. The screw 1301 is provided with a screw nut 1303 that cooperates with the screw 1301; the handwheel 1302 is located at the end of the screw 1301 away from the unlocking mechanism; the drive member mounting plate 1002 is provided with a screw top block 1304 suitable for abutting with the screw nut 1303, the screw top block 1304 is located in the opposite direction of the opening of the cabin door 9, and at least part of the screw top block 1304 is located within the positive projection of the screw 1301. This embodiment forms a reliable emergency door opening assistance mechanism by disposing a lead screw 1301 on the lower surface of the door base plate 1003 at the end away from the unlocking mechanism. This lead screw 1301, coupled with a lead screw nut 1303 and a lead screw top block 1304 on the driver mounting plate 1002, forms a reliable emergency door opening assistance mechanism. In an emergency, the operator simply turns handwheel 1302, which drives lead screw 1301 to rotate, causing lead screw nut 1303, which in turn, to move along lead screw 1301. Because lead screw top block 1304 is located in the opposite direction of the hatch door 9's opening, when lead screw nut 1303 contacts lead screw top block 1304, the interaction between lead screw nut 1303 and lead screw top block 1304 generates a driving force that moves hatch door 9 away from cabin body 8, thereby enabling hatch door 9 to be opened in an emergency and effectively ensuring rapid evacuation.

[0079] In one embodiment, Figure 5 and Figure 6 As shown, the screw 1301 is installed on the door bottom plate 1003 through the screw mounting plate 14, and both ends of the screw 1301 are fixed on the screw mounting plate 14 through the bearing seat 15, and the front and rear positions of the screw 1301 are fixed by the bearing lock nut 16 and the retaining ring.

[0080] In another embodiment, Figure 6As shown, the handwheel 1302 is provided with a flat square hole that is compatible with the end of the screw 1301, and a keyway is provided on the wall of the flat square hole. The end of the screw 1301 is provided with a flat key 17 that matches the keyway. The handwheel 1302 is connected to the screw through the flat key 17. In this way, not only can the torque on the handwheel 1302 be stably and efficiently transmitted to the screw 1301, ensuring that the screw nut 1303 can slide smoothly on the screw 1301, but also the handwheel 1302 can be detachably connected to the screw 1301, improving the convenience of subsequent maintenance and replacement. It is understandable that in order to improve the level of automation, an electric drive component can be used instead of the handwheel 1302 to connect to the screw 1301. Exemplarily, the electric drive component is a servo motor.

[0081] According to one embodiment of the present invention, Figure 5 and Figure 6 As shown, the auxiliary door opening mechanism 13 also includes a linear slide 1305 and a slider 1306 that slidably cooperates with the linear slide 1305. The linear slide 1305 is located on the lower surface of the door bottom plate 1003 and is arranged side by side with the lead screw 1301. The slider 1306 is connected to the lead screw nut 1303 via a slider connecting plate 1307, and the lead screw nut 1303 is adapted to abut against the lead screw top block 1304 via the slider connecting plate 1307. The coordinated use of the linear slide 1305 and the slider 1306 ensures that the cabin door 9 always moves smoothly along the predetermined path during the opening process, avoiding deviation or jitter caused by the rotation of the lead screw 1301, thereby improving the stability of the device.

[0082] According to one embodiment of the present invention, Figure 5 and Figure 6 As shown, a pair of linear guide rails 1305 are provided, located on opposite sides of the lead screw 1301. A pair of sliders 1306 are connected to the lead screw nut 1303 via slider connecting plates 1307. By providing a pair of linear guide rails 1305 in this embodiment, the hatch 9 is more evenly constrained during opening, avoiding the uneven force and offset issues that may occur with a single linear guide rail 1305, thereby improving the structural stability and reliability of the overall device.

[0083] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An unlocking mechanism for a magnetic shielding cabin, the magnetic shielding cabin comprising a cabin door (9), a cabin body (8) and a driving member (1001), one end of the driving member (1001) being connected to the cabin body (8), and the other end being adapted to drive the cabin door (9) to move, characterized in that: include: A quick-release seat mounting plate (1) is located below the cabin (8) and is suitable for being fixedly connected to the cabin (8); A quick-release seat (2) is provided on the lower surface of the quick-release seat mounting plate (1) and is suitable for connecting with the driving member (1001); one of the quick-release seat (2) and the quick-release seat mounting plate (1) is provided with a protrusion (201), and the other is provided with a groove for use with the protrusion (201); the quick-release seat (2) is connected to the lower surface of the quick-release seat mounting plate (1) by being inserted into the groove via the protrusion (201); A locking member (3) is located on one side of the quick-release seat (2) and has a locked state and an unlocked state. In the locked state, the locking member (3) abuts against an end of the quick-release seat (2) away from the quick-release seat mounting plate (1), so that the quick-release seat (2) and the quick-release seat mounting plate (1) are locked; in the unlocked state, the locking member (3) is disengaged from an end of the quick-release seat (2) away from the quick-release seat mounting plate (1), so that the quick-release seat (2) and the quick-release seat mounting plate (1) are unlocked.

2. The unlocking mechanism according to claim 1, characterized in that: The locking member (3) is rotatably connected to the quick-release seat mounting plate (1), and a limiting protrusion (3021) is provided on the locking member (3); in the locked state, at least a portion of the limiting protrusion (3021) is inserted into the quick-release seat (2); in the unlocked state, the limiting protrusion (3021) is disengaged from the quick-release seat (2).

3. The unlocking mechanism according to claim 2, characterized in that: The locking member (3) comprises a rotating seat (301) and a rotating rod (302); the rotating seat (301) is arranged on the quick-release seat mounting plate (1), and a pin is provided on its lower surface along its thickness direction; the rotating rod (302) is provided with a first through hole for use with the pin, and the pin passes through the first through hole and is connected to the fastener (4).

4. The unlocking mechanism according to claim 2, characterized in that: The quick-release seat mounting plate (1) is further provided with a support seat (5), the support seat (5) being located on one side of the quick-release seat (2) and provided with a second through hole (501); in the locked state, the limiting protrusion (3021) passes through the second through hole (501), and a portion of the limiting protrusion (3021) is passed through the quick-release seat (2).

5. The unlocking mechanism according to claim 3, characterized in that: An extension rod (6) is provided at one end of the rotating rod (302) away from the rotating seat (301), the extension rod (6) and the rotating rod (302) are arranged at an angle, the end of the extension rod (6) away from the rotating rod (302) is located outside the orthographic projection of the quick-release seat mounting plate (1) in the thickness direction thereof, and a gripping portion (7) is provided at the end of the extension rod (6) away from the rotating rod (302).

6. A magnetic shielding cabin, characterized in that: include: A cabin (8) having a hatch (801) on one side; a hatch (9) adapted to close and seal the hatch (801); The unlocking mechanism according to any one of claims 1 to 5, wherein the quick-release seat mounting plate (1) is located below the cabin (8) and is fixedly connected to the cabin (8); The door opening mechanism (10) comprises a driving member (1001), wherein the fixed end of the driving member (1001) is connected to the quick-release seat (2), and the driving end of the driving member (1001) is suitable for driving the cabin door (9) to move relative to the cabin body (8) so as to open or close the cabin door (9).

7. The magnetic shield cabin according to claim 6, characterized in that: The door opening mechanism (10) further comprises a drive member mounting plate (1002), wherein the drive member mounting plate (1002) is located below the cabin body (8) and is connected to the cabin body (8) via a connecting member (11); the unlocking mechanism and the drive member (1001) are located between the cabin body (8) and the drive member mounting plate (1002); a gap is left between the fixed end of the drive member (1001) and the drive member mounting plate (1002), and in the unlocked state, the quick-release seat (2) can be separated from the quick-release seat mounting plate (1) under the action of gravity.

8. The magnetic shield cabin according to claim 7, characterized in that: The connecting member (11) includes a pair of side panels (1101) arranged opposite to each other; the door opening mechanism (10) also includes a door bottom plate (1003), and the cabin door (9) is arranged on the upper surface of the door bottom plate (1003) at one end away from the hatch (801); the door bottom plate (1003) is located between the cabin body (8) and the driving member mounting plate (1002), and is slidably connected to the pair of side panels (1101); the door bottom plate (1003) and the driving end of the driving member (1001) are connected via a transmission assembly (12).

9. The magnetic shield cabin according to claim 8, characterized in that: The transmission assembly (12) comprises a stopper (10031), a transmission support (1201), a pair of clamping claws (1202) and a pair of guide rails (1203) arranged on the driver mounting plate (1002); the stopper (10031) is arranged on the lower surface of the door bottom plate (1003); the transmission support (1201) is connected to the driving end of the driver (1001); the pair of clamping claws (1202) are located on opposite sides of the transmission support (1201) and one end is rotatably connected to the transmission support (1201); a limiting space for accommodating the stopper (10031) is formed between the free ends of the pair of clamping claws (1202) and the transmission support (1201); the stopper (10031) is arranged on the lower surface of the door bottom plate (1003); the transmission support (1201) is connected to the driving end of the driver (1001); the pair of clamping claws (1202) are located on opposite sides of the transmission support (1201) and one end is rotatably connected to the transmission support (1201); a limiting space for accommodating the stopper (10031) is formed between the free ends of the pair of clamping claws (1202) and the transmission support (1201); 0031) is suitable for abutting against the free ends of a pair of the clamping jaws (1202) or the transmission support (1201); a pair of the guide rails (1203) are arranged in a one-to-one correspondence with the pair of the clamping jaws (1202) and are slidably connected, and the guide rails (1203) include a first rail (12031) and a second rail (12032), the length direction of the first rail (12031) is consistent with the opening and closing direction of the cabin door (9), and the second rail (12032) is located at one end of the first rail (12031) close to the cabin door (9) and is inclined toward the direction away from the transmission support (1201); the second rail (12032) and the first rail (12031) have a smooth transition.

10. The magnetic shielding cabin according to claim 9, characterized in that: The magnetic shielding cabin has an open state and a closed state; in the open state, the stopper (10031) is located in the limit space and abuts against the transmission support (1201), and the stopper (10031) moves to a predetermined position under the drive of the driving member (1001), and then the stopper (10031) moves in a direction away from the cabin body (8) and disengages from the limit space between the free ends of a pair of the clamping claws (1202); in the closed state The stopper (10031) moves toward the direction approaching the cabin body (8) and enters the predetermined position in the limiting space from between the free ends of the pair of clamps (1202), and then the free ends of the pair of clamps (1202) approach each other under the drive of the driving member (1001) and abut against the stopper (10031), and then the stopper (10031) drives the cabin door (9) to approach the cabin body (8) under the drive of the driving member (1001).

11. The magnetic shield cabin according to claim 8, characterized in that: A guide rail (10032) is provided on the side wall of the door bottom plate (1003) facing the side plate (1101), and the length direction of the guide rail (10032) is consistent with the opening and closing direction of the cabin door (9); the side plate (1101) is provided with a plurality of rollers (11011), and the plurality of rollers (11011) are arranged on opposite sides of the guide rail (10032) and are rollingly connected to the guide rail (10032).

12. The magnetic shield cabin according to claim 8, characterized in that: The auxiliary door opening mechanism (13) is also included, and the auxiliary door opening mechanism (13) includes a screw (1301) and a hand wheel (1302) arranged on the screw (1301); the screw (1301) is arranged on the lower surface of the door bottom plate (1003) away from one end of the unlocking mechanism, the length direction of the screw (1301) is consistent with the opening and closing direction of the cabin door (9), and the screw (1301) is provided with a handle that matches the screw (1301). The handwheel (1302) is located at the end of the screw (1301) away from the unlocking mechanism; the drive member mounting plate (1002) is provided with a screw top block (1304) suitable for abutting against the screw nut (1303), the screw top block (1304) is located in the opposite direction of the opening of the hatch (9), and at least part of the screw top block (1304) is located within the positive projection of the screw (1301).

13. The magnetic shield cabin according to claim 12, characterized in that: The auxiliary door opening mechanism (13) also includes a linear slide rail (1305) and a slider (1306) that slides with the linear slide rail (1305), wherein the linear slide rail (1305) is located on the lower surface of the door bottom plate (1003) and is arranged side by side with the lead screw (1301); the slider (1306) is connected to the lead screw nut (1303) through a slider connecting plate (1307), and the lead screw nut (1303) is suitable for abutting against the lead screw top block (1304) through the slider connecting plate (1307).

14. The magnetic shield cabin according to claim 13, wherein: The linear guide rails (1305) are a pair, and the pair of linear guide rails (1305) are located on opposite sides of the lead screw (1301), and the pair of sliders (1306) are connected to the lead screw nut (1303) through the slider connecting plate (1307).

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