A different axis radiation-proof door lock

Abstract

This utility model relates to a radiation-proof door lock with different axes. The lock base includes a fixed base and a movable base, and the lock cylinder includes an inner lock cylinder and an outer lock cylinder. An electromagnet unit is mounted on the fixed base, and a permanent magnet or iron block portion is mounted on the movable base. The fixed base has a through-hole structure and alternating inner and outer arm plates. The length of the inner arm plate is greater than the length of the outer arm plate. The movable base has a rod that matches the through-hole structure and is fitted with a spring, guiding the movement of the movable base relative to the fixed base and keeping the fixed base and movable base in close contact. Each arm plate has a circuit structure that can be associated with the control circuit of the electromagnet unit, and each circuit structure has two parallel circuit structures that can control the on / off state of the electromagnet unit. Movable electrical contacts are provided on the arm plates. The lock cylinder can drive the movable electrical contacts to rotate, selectively turning the circuit structures on the arm plates on and off. This application overcomes the problem of radiation leakage from the lock cylinder location.

Description

Technical Field

[0001] This utility model relates to a radiation-proof door lock with a different axis. Background Technology

[0002] In places like hospital radiology rooms, lead-lined shielding doors are often used to prevent radiation leakage. However, in existing technology, the lock cylinders on these doors have through-hole structures, creating a potential source of radiation leakage. Utility Model Content

[0003] The purpose of this invention is to provide a radiation-proof door lock with a different axis to overcome the problem that radiation can easily leak outward from the lock cylinder.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a radiation-proof door lock with different axes, including a lock base and a lock cylinder. The lock base includes a fixed base and a movable base, and the lock tongue is disposed on the movable base. The lock cylinder includes an inner lock cylinder and an outer lock cylinder, which are relatively separate structures. It also includes an electromagnet unit disposed on the fixed base and a permanent magnet part or iron block part disposed on the movable base.

[0005] The fixed base has multiple through-hole structures and is equipped with alternating inner and outer arm plates. The extension length of the inner arm plate is greater than that of the outer arm plate.

[0006] The movable seat is provided with multiple columns that correspond to and match the through-hole structure, and springs are fitted onto each column. The columns guide the movable seat to move linearly relative to the fixed seat. The two ends of the springs contact the end face of the fixed seat and the cap on the column, respectively, so that the fixed seat and the movable seat are kept in close contact, and the electromagnet unit is arranged opposite to the permanent magnet part or the iron block part.

[0007] Both the inner and outer arm plates are equipped with circuit structures that can be associated with the control circuit of the electromagnet unit. Each of these circuit structures contains two parallel circuits that control the on / off state of the electromagnet unit. Each circuit structure has two fixed electrical contacts that are disconnected from each other.

[0008] A movable electrical contact head is provided on a section of the inner arm plate that extends relative to the outer arm plate. The inner lock core is matched with the movable electrical contact head, and turning the inner lock core can rotate the movable electrical contact head, which selectively contacts and disengages from two fixed electrical contacts provided on the inner arm plate, thereby achieving the purpose of controlling the on and off state of the electromagnet unit.

[0009] The outer arm plate is provided with a movable electrical contact head that matches the outer lock core. Twisting the outer lock core can rotate the movable electrical contact head, which can selectively contact and disengage with two fixed electrical contacts provided on the outer arm plate, thereby achieving the purpose of controlling the on and off state of the electromagnet unit.

[0010] Optionally, the inner lock cylinder includes a housing and a core. The housing is fixedly connected to the inner arm plate, and the core is rotatable relative to the housing; one end of the core matches a movable electrical contact provided on the inner arm plate, and can drive the movable electrical contact to rotate.

[0011] Optionally, each external lock cylinder includes a housing and a core. The housing is fixedly connected to the outer arm plate, and the core can rotate relative to the housing; one end of the core matches a movable electrical contact provided on the outer arm plate, and can drive the movable electrical contact to rotate.

[0012] A resistance structure can be provided between the relative circumferential surfaces of the outer shell and the core column mentioned above, and the resistance structure can generate / provide resistance to the relative rotation of the two during the rotation of the core column relative to the outer shell.

[0013] Optionally, an elastic washer is fixedly provided on the movable seat at the root of the column, such that both end faces of the elastic washer can simultaneously contact the opposing surfaces between the fixed seat and the movable seat. The axial thickness of the elastic washer is controlled to be above 5mm.

[0014] Optionally, the cap and the rod are matched by a threaded structure, which allows adjustment of the axial position of the cap on the rod to regulate the initial state of the spring.

[0015] Optionally, the movable electrical contact on the inner arm plate includes a conductive ring that is pivotally matched with the inner arm plate and two movable electrical contacts formed on the conductive ring. The inner locking core matches the conductive ring and can drive the conductive ring to rotate relative to the inner arm plate, so that the two movable electrical contacts simultaneously contact and disengage from the two fixed electrical contacts on the inner arm plate, thereby switching the circuit structure on the inner arm plate between the on and off states.

[0016] The movable electrical contact on the outer arm plate includes a conductive ring two pivotally matched with the outer arm plate and two movable electrical contacts two formed on the conductive ring two; the outer locking core matches the conductive ring two and can drive the conductive ring two to rotate relative to the outer arm plate, so that the two movable electrical contacts two simultaneously contact and disengage from the two fixed electrical contacts on the outer arm plate, thereby switching the circuit structure on the outer arm plate between the on and off states.

[0017] Optionally, multiple limiting components are provided on the inner arm plate and the outer arm plate, respectively, which can be matched with conductive ring one and conductive ring two. The limiting components are designed to control the rotation direction of conductive ring one relative to the inner arm plate during the transition from a state of disengagement from the two fixed electrical contacts to a state of contact; and to control the rotation direction of conductive ring two relative to the outer arm plate during the transition from a state of disengagement from the two fixed electrical contacts to a state of contact.

[0018] Optionally, the limiting assembly includes a protrusion fixed to the inner or outer arm plate, an arm rod connected to the protrusion via a pivot portion, and a stop portion provided on the protrusion. The pivot portion is a torsion spring type pivot assembly, which can apply a torque force to the arm rod to keep the arm rod pressed against the stop portion.

[0019] The free end of the boom extends toward conductive ring one or conductive ring two and contacts the end face of the protrusion on conductive ring one or conductive ring two, and can limit the rotation direction of conductive ring one and conductive ring two during the process of changing from a state of being disengaged from the two fixed electrical contacts to a state of being in contact.

[0020] Optionally, an elastic pad is provided at the free end of the boom, and the elastic pad is pressed into contact with the outer peripheral surfaces of conductive ring one and conductive ring two.

[0021] The beneficial effects of this utility model are: it can overcome the problem that radiation can easily leak out from the lock cylinder, which helps to improve the safety of lead plate protective doors. Attached Figure Description

[0022] Figure 1 This utility model is shown in the main view of its structure (open state).

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0025] Figure 4 This is a schematic diagram of the structure of this utility model when viewed from above and the angle of view is smaller than that of the door and the door frame (closed state).

[0026] In the diagram: 10 Fixed seat, 11 Inner arm plate, 12 Outer arm plate; 20 Movable seat, 21 Lock tongue, 22 Column rod, 221 Cap, 23 Spring component, 24 Elastic washer ring; 30 Electromagnet unit, 31 Fixed electrical contact one, 32 Conductive ring one, 321 Movable electrical contact one, 33 Fixed electrical contact two, 34 Conductive ring two, 341 Movable electrical contact two, 35 Limiting assembly, 351 Protrusion body, 352 Arm rod, 353 Torsion spring pivot assembly, 354 Stop block part, 36 Protrusion; 40 Permanent magnet part; 50 Inner lock cylinder; 60 Outer lock cylinder; 100 Door body, 101 Lead plate assembly; 200 Door frame, 201 Edge plate, 202 Lock tongue groove. Detailed Implementation

[0027] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] like Figures 1 to 4 The illustrated anti-radiation door lock with a different axis includes a lock base, a lock cylinder, an electromagnet unit 30, and a permanent magnet part 40. The permanent magnet part 40 can be replaced by an iron block part / armature part.

[0029] The lock base includes a fixed base 10 and a movable base 20, with the latch 21 disposed on the movable base 20. The latch 21 and the movable base 20 can be integrally formed. The lock cylinder includes a separate inner lock cylinder 50 and an outer lock cylinder 60. The electromagnet unit 30 (its main body) is fixedly mounted on the fixed base 10. The permanent magnet part 40 is fixedly mounted on the movable base 20. When the fixed base 10 and the movable base 20 are assembled together, the magnetic force forming surface of the electromagnet unit 30 is fully aligned left and right with the end face of the permanent magnet block in the permanent magnet part 40, thus maximizing / fully maximizing the interaction of magnetic forces. It should be noted that when the electromagnet unit 30 is energized, the magnetic pole of one end facing the permanent magnet part 40 is the same as the magnetic pole of the end face of the permanent magnet part 40 facing the electromagnet unit 30, thus forming a repulsive magnetic force between the electromagnet unit 30 and the permanent magnet part 40.

[0030] The fixed base 10 has multiple through holes and an inner arm plate 11 and an outer arm plate 12 that are arranged alternately. The extension length of the inner arm plate 11 is greater than the extension length of the outer arm plate 12, and the length of the inner arm plate 11 is generally more than 1.8 times the length of the outer arm plate 12.

[0031] The movable seat 20 is provided with a plurality of columns 22 that correspond one-to-one with the through-hole structures provided on the fixed seat 10, and spring members 23 are respectively sleeved on the columns 22. The columns 22 can guide the movable seat 20 to move linearly relative to the fixed seat 10. The two ends of the spring members 23 are in contact with the end face of the fixed seat 10 and the cap 221 provided on the column 22, respectively, so that the fixed seat 10 and the movable seat 20 are kept in close contact, and the electromagnet unit 30 (magnetic force action surface) and the permanent magnet part 40 (magnetic force surface) are arranged opposite each other (their opposite end faces are almost in contact, or even in a state of contact).

[0032] An elastic washer 24 can be fixedly provided on the movable seat 20 at the root of the column rod 22, such that the two end faces of the elastic washer 24 can (simultaneously) contact the opposing surfaces between the fixed seat 10 and the movable seat 20, as shown in the figure. Figure 3 As shown, the elastic pad ring 24 provides shock absorption and buffering, reducing the impact intensity between the movable seat 20 and the fixed seat 10 when they move relative to each other.

[0033] The cap 221 is threaded to the rod 22, allowing adjustment of the axial position of the cap 221 on the rod 22 to regulate the initial state of the spring 23. Specifically, the cap 221 can be a threaded ring with an external threaded section formed on the rod 22, and the threaded ring is matched with this external threaded section.

[0034] Both the inner arm plate 11 and the outer arm plate 12 are provided with circuit structures that can be associated with the control circuit of the electromagnet unit 30. Each of these circuit structures contains two parallel circuit structures that can control the on / off state of the electromagnet unit 30. Each of these two circuit structures has two fixed electrical contacts that are relatively disconnected, meaning that the two fixed electrical contacts keep the circuit structure (which can also be called a conductive circuit) in the open state. In other words, a circuit structure (which can be distinguished as circuit structure one and circuit structure two) is provided on the inner arm plate 11 and the outer arm plate 12 respectively; circuit structure one on the inner arm plate 11 and circuit structure two on the outer arm plate 12 are both connected to the control circuit of the electromagnet unit 30; circuit structure one is provided with a circuit structure (hereinafter referred to as conductive line one) that can control the energized and de-energized states of the electromagnet unit 30, and circuit structure two is provided with another circuit structure (hereinafter referred to as conductive line two) that can also control the energized and de-energized states of the electromagnet unit 30; conductive line one and conductive line two are connected in parallel in the control circuit of the electromagnet unit 30, that is, conductive line one and conductive line two form two parallel branches that can control the energized and de-energized states of the electromagnet unit 30; conductive line one is provided with two fixed electrical contacts (see fixed electrical contact one 31 in the figure) to make conductive line one open; conductive line two is provided with two fixed electrical contacts (see fixed electrical contact two 33 in the figure) to make conductive line two open.

[0035] The main part of the control circuit of the electromagnet unit 30 can be fixedly mounted on the fixed base 10.

[0036] A movable electrical contact is provided on a section of the inner arm plate 11 that extends relative to the outer arm plate 12, so that the inner lock core 50 matches the movable electrical contact. Twisting the inner lock core 50 can rotate the movable electrical contact, which selectively contacts and disengages from two fixed electrical contacts (i.e., the two fixed electrical contacts 31 shown in the figure) provided on the inner arm plate 11, so that the conductive line 1 switches between the on and off states, controlling the on and off states of the electromagnet unit 30.

[0037] The outer arm plate 12 is provided with a movable electrical contact head that matches the outer lock core 60. Twisting the outer lock core 60 can rotate the movable electrical contact head, which can selectively contact and disengage with two fixed electrical contacts (i.e., the two fixed electrical contacts 33 shown in the figure) provided on the outer arm plate 12, so that the conductive circuit 2 switches between the on and off states, thereby controlling the on and off states of the electromagnet unit 30.

[0038] In the technical solution of this application, the inner lock cylinder 50 and the outer lock cylinder 60 are arranged in an alternating manner, and the keyholes on the two lock cylinders cannot be connected / interconnected, thereby blocking the channel for radiation to leak outward from the lock cylinder hole / keyhole, thus overcoming the problem that radiation can easily leak outward from the lock cylinder position.

[0039] The specific structure of the inner lock cylinder 50 and the outer lock cylinder 60, especially the structure of the keyhole, can refer to the existing technology; or simply understood as follows: the two lock cylinders are designed as cylindrical kits with keyholes, and the cylindrical kits contain a shell or a core column, with the keyhole formed on the core column; when the key is inserted into the keyhole, the core column can rotate relative to the shell, thereby driving the movable electric contact head to rotate; the shell is fixedly connected to the inner arm plate 11 and the outer arm plate 12.

[0040] A matching resistance structure is provided between the outer shell and the core, and this resistance structure requires the application of torque (with the aid of a key) when the core rotates relative to the outer shell, preventing it from rotating freely relative to the outer shell. Specifically, multiple rubber rings are fixedly arranged alternately in the axial direction on the outer circumferential surface of the core, and the outer circumferential surface of the rubber rings is formed as an outwardly protruding arch, with the top of the arch contacting and matching the inner circumferential surface of the outer shell. In this way, resistance is provided when the core rotates relative to the outer shell through the interference contact between the rubber rings and the outer shell. Multiple spherical protrusions can also be formed on the outer circumferential surface of the rubber rings, with the top of the spherical protrusions contacting the inner circumferential surface of the outer shell; the opposing circumferential surfaces of the core and the outer shell can also mesh with fine teeth, so that when the core rotates relative to the outer shell, rotational resistance is provided by the fine teeth on the two circumferential surfaces.

[0041] like Figure 1 , Figure 4 As shown, the movable electrical contact on the inner arm plate 11 includes a conductive ring 32 pivotally matched with the inner arm plate 11 and two movable electrical contacts 321 formed on the conductive ring 32. The two movable electrical contacts 321 can be evenly distributed alternately in the circumferential direction. The movable electrical contact on the outer arm plate 12 includes a conductive ring 34 pivotally matched with the outer arm plate 12 and two movable electrical contacts 341 formed on the conductive ring 34. Similarly, the two movable electrical contacts 341 can be evenly distributed alternately in the circumferential direction.

[0042] The inner lock cylinder 50 is matched with the conductive ring 32 and can drive the conductive ring 32 to rotate relative to the inner arm plate 11, so that the two movable electrical contacts 321 simultaneously contact and disengage from the two fixed electrical contacts (i.e., the two fixed electrical contacts 31) provided on the inner arm plate 11. Specifically, the outer shell of the inner lock cylinder 50 is fixed together with the inner arm plate 11, and one end of the core of the inner lock cylinder 50 is grounded and matched with the conductive ring 32. When the core is driven to rotate relative to the outer shell (by a key), it can drive the conductive ring 32 to rotate relative to the inner arm plate 11, thereby moving the two movable electrical contacts 321 to a different position, so that they can simultaneously contact and disengage from the two fixed electrical contacts 31.

[0043] The outer lock core 60 is matched with the conductive ring 34 and can drive the conductive ring 34 to rotate relative to the outer arm plate 12, so that the two movable electrical contacts 341 simultaneously contact and disengage from the two fixed electrical contacts (i.e., the two fixed electrical contacts 33) provided on the outer arm plate 12. Specifically, the outer shell of the outer lock core 60 is fixed together with the outer arm plate 12, and one end of the core post of the outer lock core 60 is grounded and matched with the conductive ring 34. When the core post is driven to rotate relative to the outer shell (by a key), it can drive the conductive ring 34 to rotate relative to the outer arm plate 12, thereby moving the two movable electrical contacts 341 to a different position, so that they can simultaneously contact and disengage from the two fixed electrical contacts 33.

[0044] The so-called conductive ring 32 and conductive ring 34 are ring bodies (or cylindrical bodies) with internal structures that can conduct electricity to connect two movable electrical contacts 321 and two movable electrical contacts 341. The conductive ring 32 and conductive ring 34 are insulated from the arm plate, ensuring that the entire body of the conductive rings is an insulator.

[0045] The inner arm plate 11 is provided with two limiting components 35 that correspond to and match the conductive ring 32. These two limiting components 35 can at least control the rotation direction of the conductive ring 32 relative to the inner arm plate 11 during the process of the conductive ring 32 changing from a state of disengagement from the two fixed electrical contacts 31 to a state of contact. Figure 1 In the scheme shown, during the aforementioned (state change) process, the conductive ring 32 can only rotate clockwise; when changing to the opposite state, it needs to rotate counterclockwise.

[0046] The outer arm plate 12 is provided with two limiting components 35 that correspond to and match the conductive ring 34. These two limiting components 35 can control the rotation direction of the conductive ring 34 relative to the outer arm plate 12 during the process of the conductive ring 34 changing from a state of disengagement from the two fixed electrical contacts 33 to a state of contact. Figure 1 In the scheme shown, during the aforementioned (state change) process, the conductive ring 34 can only rotate clockwise; when changing to the opposite state, it needs to rotate counterclockwise.

[0047] like Figures 1 to 2 As shown, the limiting assembly 35 includes a protrusion 351 fixed on the inner arm plate 11 or the outer arm plate 12, an arm 352 connected to the protrusion 351 via a pivot portion, and a stop portion 354 provided on the protrusion 351. The pivot portion is a torsion spring type pivot assembly 353, and the torsion spring type pivot assembly 353 can apply torque to the arm (352) to keep the arm 352 pressed against the stop portion 354.

[0048] The free end of the arm 352 extends toward the first conductive ring 32 or the second conductive ring 34, and contacts one end face of the protrusion 36 provided on the first conductive ring 32 or the second conductive ring 34, and can limit the rotation direction of the first conductive ring 32 and the second conductive ring 34 during the process of changing from a state of being disengaged from the two fixed electrical contacts to a state of being in contact.

[0049] An elastic pad is provided at the free end of the arm 352, and the elastic pad is in pressing contact with the outer peripheral surfaces of the first conductive ring 32 and the second conductive ring 34. In this way, the arm 352 can apply resistance to the first conductive ring 32 and the second conductive ring 34, and can generate a force that prevents the first conductive ring 32 and the second conductive ring 34 from freely rotating relative to the arm plate (i.e., the inner arm plate 11 and the outer arm plate 12), so that the first conductive ring 32 and the second conductive ring 34 cannot rotate freely relative to the arm plate.

[0050] In the technical solution of this application, the fixed seat 10 is fixed to the door body 100 and placed in the groove of the door body 100; after the movable seat 20 is connected to the fixed seat 10, the movable seat 20 can be positioned at the port of the groove of the door body 100. Through the connection established between the fixed seat 10 and the movable seat 20 by the spring member 23, the column rod 22, etc., the movable seat 20 can move relative to the fixed seat 10 in a straight line and can return to a close-to-each-other state. When the electromagnet unit 30 is energized, the magnetic force generated can act on the permanent magnet part 40, pushing the movable seat 20 to move away from the fixed seat 10, causing the latch 21 to insert into the latch groove 202 provided on the door frame 200. During this process, the spring member 23 is further compressed, entering... Figure 4As shown in the diagram; when the electromagnet unit 30 is switched to the de-energized state, the repulsive force between the electromagnet unit 30 and the permanent magnet part 40 disappears, and under the elastic force of the spring member 23, the movable seat 20 can be moved towards the fixed seat 10, returning to the state shown in the diagram; Figure 1 As shown in the diagram, the locking tongue 21 will then move out of the locking tongue groove 202.

[0051] One end of the lead plate assembly 101 provided on the door body 100 can extend into the space between the inner arm plate 11 and the outer arm plate 12, as shown in the figure. Figure 4 As shown. Meanwhile, to further improve the sealing performance and radiation leakage prevention capability at the movable joint between the door body 100 and the door frame 200, an edge plate 201 extending towards the door body 100 can be provided on the inner side of the door frame 200, and a lead plate can be placed within this edge plate 201. The door body 100 relative to the threshold 200 along... Figure 4 The W-direction rotation opens as shown.

[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A misaligned radiation shielded door lock comprising a lock housing and a lock cylinder; characterized by: The lock base includes a fixed base (10) and a movable base (20), and the lock tongue (21) is provided on the movable base (20); the lock cylinder includes a split inner lock cylinder (50) and an outer lock cylinder (60); it also includes an electromagnet unit (30) provided on the fixed base (10) and a permanent magnet part (40) or an iron block part provided on the movable base (20); The fixed base (10) has multiple through holes and an inner arm plate (11) and an outer arm plate (12) that are arranged in alternating front and rear positions; the length of the inner arm plate (11) is greater than the length of the outer arm plate (12); The movable seat (20) is provided with a plurality of columns (22) that correspond to and match the through hole structure, and springs (23) are respectively sleeved on the columns (22); the columns (22) can guide the movable seat (20) to move in a straight line relative to the fixed seat (10); the two ends of the springs (23) are in contact with the fixed seat (10) and the cap (221) provided on the columns (22) respectively, so that the fixed seat (10) and the movable seat (20) are kept in close contact, and the electromagnet unit (30) is arranged opposite to the permanent magnet part (40) or the iron block part; Both the inner arm plate (11) and the outer arm plate (12) are provided with circuit structures that can be associated with the control circuit of the electromagnet unit (30), and both circuit structures are provided with two line structures that can control the on and off state of the electromagnet unit (30) and are connected in parallel; both line structures are provided with two fixed electrical contacts that are disconnected from each other. A movable electrical contact head is provided on a section of the inner arm plate (11) that extends relative to the outer arm plate (12), so that the inner lock core (50) matches the movable electrical contact head, and when the inner lock core (50) is turned, the movable electrical contact head can rotate, and selectively contact and disengage with two fixed electrical contacts provided on the inner arm plate (11). The outer arm plate (12) is provided with a movable electrical contact head that matches the outer lock core (60), and when the outer lock core (60) is turned, the movable electrical contact head can be rotated, and selectively contact and disengage with two fixed electrical contacts provided on the outer arm plate (12).

2. The off-axis radiation shield door lock of claim 1, wherein: The inner lock cylinder (50) includes a housing and a core; the housing is fixedly connected to the inner arm plate (11), and the core can rotate relative to the housing; one end of the core matches a movable electrical contact on the inner arm plate (11), and can drive the movable electrical contact to rotate.

3. The off-axis radiation shielded door lock of claim 1, wherein: Each of the outer lock cylinders (60) includes a housing and a core; the housing is fixedly connected to the outer arm plate (12), and the core can rotate relative to the housing; one end of the core matches the movable electrical contact head provided on the outer arm plate (12), and can drive the movable electrical contact head to rotate.

4. The off-axis radiation door lock of claim 1, wherein: An elastic washer (24) is fixedly provided on the movable seat (20) and at the root of the column (22), so that the two end faces of the elastic washer (24) can simultaneously contact the opposing surfaces between the fixed seat (10) and the movable seat (20).

5. A misaligned anti-radiation door lock according to claim 4, wherein: The axial thickness of the elastic washer (24) is more than 5 mm.

6. The off-axis radiation door lock of claim 1, wherein: The cap (221) and the rod (22) are matched by a threaded structure, and the axial position of the cap (221) on the rod (22) can be adjusted.

7. The off-axis radiation shielded door lock of claim 1, wherein: The movable electrical contact on the inner arm plate (11) includes a conductive ring (32) pivotally matched with the inner arm plate (11) and two movable electrical contacts (321) formed on the conductive ring (32); the inner lock core (50) matches the conductive ring (32) and can drive the conductive ring (32) to rotate relative to the inner arm plate (11) so that the two movable electrical contacts (321) simultaneously contact and disengage from the two fixed electrical contacts on the inner arm plate (11); The movable electrical contact on the outer arm plate (12) includes a conductive ring two (34) pivotally matched with the outer arm plate (12) and two movable electrical contacts two (341) formed on the conductive ring two (34); the outer lock core (60) is matched with the conductive ring two (34) and can drive the conductive ring two (34) to rotate relative to the outer arm plate (12) so that the two movable electrical contacts two (341) simultaneously contact and disengage from the two fixed electrical contacts on the outer arm plate (12).

8. A misaligned anti-radiation door lock according to claim 7, wherein: Multiple limiting components (35) are provided on the inner arm plate (11) and the outer arm plate (12) respectively, which can be matched with the conductive ring one (32) and the conductive ring two (34); so that the limiting components (35) can at least control the rotation direction of the conductive ring one (32) relative to the inner arm plate (11) during the process of the conductive ring one (32) changing from the state of being detached from the two fixed electrical contacts to the state of being in contact; and at least control the rotation direction of the conductive ring two (34) relative to the outer arm plate (12) during the process of the conductive ring two (34) changing from the state of being detached from the two fixed electrical contacts to the state of being in contact.

9. A misaligned anti-radiation door lock according to claim 8, wherein: The limiting assembly (35) includes a protrusion (351) fixed on the inner arm plate (11) or the outer arm plate (12), an arm (352) connected to the protrusion (351) via a pivot portion, and a stop portion (354) provided on the protrusion (351); the pivot portion is a torsion spring type pivot assembly (353), and the torsion spring type pivot assembly (353) can apply torque to the arm (352) to keep the arm (352) pressed against the stop portion (354); The free end of the arm (352) extends toward the first conductive ring (32) or the second conductive ring (34) and contacts the end face of the protrusion (36) provided on the first conductive ring (32) or the second conductive ring (34), and can limit the rotation direction of the first conductive ring (32) and the second conductive ring (34) during the process of changing from the state of being separated from the two fixed electrical contacts to the state of being in contact.

10. The off-axis radiation shielded door lock of claim 9, wherein: An elastic pad is provided at the free end of the boom (352), and the elastic pad is pressed against the outer circumferential surfaces of the first conductive ring (32) and the second conductive ring (34).

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