A cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure in adaptive temperature change

Abstract

The present application relates to the technical field of cabinet door lock, especially to a cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure under self-adaptive temperature change. The technical scheme comprises: a lock opening seat is arranged on one side of the shell, a second action module is arranged inside, a first action module is arranged outside, a magnetic separation plate is arranged between the shell and the first action module, and the first action module drives a guide sleeve to be connected with the lock opening seat. The second action module comprises a motor, a lead screw is connected to the output end of the motor, the lead screw is threadedly connected with a sliding sleeve, a graphite lubricating layer is arranged between the lead screw and the sliding sleeve, the sliding sleeve is telescopically movable, and a guide head is arranged at the end of the sliding sleeve. After the guide sleeve is connected with the lock opening seat, the sliding sleeve can penetrate the guide sleeve and be inserted into the lock opening seat. Fixed plates are arranged on both sides of the lock opening seat, fixed holes are formed in the fixed plates, the lock opening seat has a plug hole, and the sliding sleeve of the second action module and the guide sleeve can be inserted into the plug hole. The present application reduces the influence of motor heat on the shell, prevents high-temperature expansion failure, compensates material expansion by using an elastic rubber gasket, ensures stable and reliable operation, and improves the practicability and durability of the cabinet door lock.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cabinet door lock, and particularly relates to a cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure in self-adaption to temperature change. BACKGROUND

[0002] The cabinet door lock is a device used for locking various cabinets, mainly used for protecting the safety and privacy of the items in the cabinet and ensuring that unauthorized persons cannot open the cabinet at will. The cabinet door lock is usually made of metal material and contains complex mechanical or electronic structures inside for realizing the functions of unlocking and locking. For example, the mechanical lock body has components such as lock core, tumblers and lock tongue, and the electronic lock body has elements such as circuit board and motor.

[0003] According to the search, the patent with the patent application number CN202010285090.9 discloses a container door automatic opening and closing mechanism. Although the device realizes the automatic operation of the container door through magnetic attraction and the telescopic assembly, the metal components are prone to jamming due to thermal expansion difference in extreme temperature environment, and no heat insulation measures are adopted. The heat generated by the driving motor during long-term operation may cause demagnetization of the permanent magnet, affecting the reliability. In addition, the device relies on traditional lubricating grease, and the increased viscosity in low-temperature environment leads to increased movement resistance, which cannot meet the demand of severe working conditions. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure in self-adaption to temperature change, which solves the problems proposed in the background art.

[0005] The solution of the present application to the above technical problems is as follows:

[0006] The cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure in self-adaption to temperature change comprises an outer shell, a lock opening seat is installed on one side of the outer shell, a second action module is installed inside the outer shell,

[0007] The output end of the second action module is sleeved with a guide sleeve, a first action module is installed on the outer side of the outer shell, a magnetic isolation plate is installed between the outer shell and the first action module, the first action module is in transmission connection with the guide sleeve, the guide sleeve is in butt joint with the lock opening seat through the driving of the first action module, the second action module is provided with a motor, the output end of the motor is provided with a lead screw, a sliding sleeve is threadedly connected to the lead screw, a graphite lubricating layer is arranged between the lead screw and the sliding sleeve, the sliding sleeve is driven to move in and out through the threads of the lead screw, a guide head is arranged at the tail end of the sliding sleeve, and the sliding sleeve of the second action module penetrates through the guide sleeve and is inserted into the lock opening seat after the guide sleeve is in butt joint with the lock opening seat.

[0008] The lock seat is provided with a socket, and fixing plates are provided on both sides of the socket. Fixing holes are penetrated through the fixing plates, and a socket is provided on the socket. The sliding sleeve and the guide sleeve of the second action module are inserted into the socket of the lock seat.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the first action module is provided with an electromagnet, a permanent magnet is installed on one side of the electromagnet, a connecting shaft is connected to the permanent magnet, and a connecting plate is installed on the connecting shaft.

[0011] The beneficial effects of adopting the above further scheme are:

[0012] When power is applied to the electromagnet, it generates a magnetic field. According to electromagnetic principles, the direction of the current determines the direction of the magnetic field. By controlling the current direction, the magnetic field generated by the electromagnet interacts with the magnetic field of the permanent magnet, generating either attraction or repulsion. When attraction occurs, the electromagnet draws the permanent magnet toward it, which, via the connecting shaft, drives the connecting plate toward the electromagnet. When repulsion occurs, the electromagnet pushes the permanent magnet away, causing the connecting plate to move away from the electromagnet. This electromagnetic drive method offers a fast response and can quickly move the connecting plate. Compared to traditional mechanical drive methods, it reduces mechanical wear and the probability of failure, improves the efficiency and stability of the first action module, and thus provides a strong guarantee for the rapid locking and unlocking of the entire cabinet door lock.

[0013] Furthermore, the guide sleeve is provided with a mounting plate, the connecting plate is mounted on the mounting plate, a spring is mounted on one side of the mounting plate, a sleeve is mounted on the end of the spring facing away from the mounting plate, a guide slope is provided at the end of the sleeve, and a second slide groove is opened through the sleeve.

[0014] The beneficial effects of adopting the above further scheme are:

[0015] The connecting plate is connected with the mounting plate, and when the first action module drives the connecting plate to move, the connecting plate drives the mounting plate to move synchronously. The mounting plate is connected with the sleeve through a spring, and the spring has elasticity. During the movement of the mounting plate, the spring can play a buffering and adjusting role. When the mounting plate moves at a high speed or is impacted by the outside world, the spring can absorb part of the energy, so as to avoid that the sleeve is damaged by excessive impact force. The guide slope at the end of the sleeve has a guiding effect. When the sleeve needs to be inserted into the insertion hole of the lock seat, if there is a certain misalignment between the sleeve and the axis of the insertion hole, after the guide slope contacts the edge of the insertion hole, under the action of the slope, a component force that moves the sleeve to the axis direction of the insertion hole is generated, so that the sleeve can automatically adjust the position and be smoothly inserted into the insertion hole, and the success rate and convenience of the butt joint are improved. The second sliding groove on the sleeve provides the functions of limiting and guiding the installation and movement of the sleeve, cooperates with other components, ensures that the sleeve can only move along a specific direction, and ensures the accuracy and stability of the movement of the sleeve.

[0016] Further, the sleeve is limited and installed on the sliding sleeve through the cooperation of the second sliding groove and the limiting rod.

[0017] The beneficial effects of the above further scheme are:

[0018] The limiting rod is embedded in the second sliding groove of the sleeve, and a sliding pair structure is formed. This structure makes the installation of the sleeve on the sliding sleeve more stable, and limits the movement mode of the sleeve. The sleeve can only move linearly relative to the sliding sleeve along the direction of the second sliding groove, and cannot be randomly rotated or deviated. When the second action module drives the sliding sleeve to move, the sliding sleeve can drive the sleeve to move together through the cooperation of the limiting rod and the second sliding groove, so as to ensure the synchronism and coordination of the movement of the sleeve and the sliding sleeve. Moreover, the limiting structure can prevent the sleeve from shaking or separating from the sliding sleeve during the movement, improves the reliability and stability of the entire lock structure, and ensures the smooth performance of the locking and unlocking actions.

[0019] Further, a limiting groove is formed in the shell, and the sliding sleeve is limited and installed in the shell through the cooperation of the limiting rod and the limiting groove.

[0020] The beneficial effects of the above further scheme are:

[0021] The limiting rod on the sliding sleeve cooperates with the limiting groove in the shell to guide and limit the movement of the sliding sleeve.

[0022] Further, the aperture of the insertion hole is larger than the diameter of the sleeve, and when the sleeve is misaligned with the axis of the insertion hole, the sleeve is inserted into the insertion hole through the interaction of the guide slope and the insertion hole.

[0023] The beneficial effects of the above further scheme are:

[0024] The aperture of the insertion hole is larger than the diameter of the sleeve, providing a certain fault tolerance space for the insertion of the sleeve into the insertion hole. In actual installation and use, due to various factors, the axes of the sleeve and the insertion hole may be misaligned to a certain extent. When this happens, the guide slope at the end of the sleeve comes into play. After the guide slope contacts the edge of the insertion hole, under the interaction of the two, according to the principle of force decomposition, a component force that moves the sleeve towards the axis of the insertion hole is generated. As the sleeve continues to advance, this component force continuously adjusts the position of the sleeve, causing the sleeve to gradually align with the axis of the insertion hole, and finally smoothly insert into the insertion hole. This design reduces the requirement for the alignment accuracy of the axes of the sleeve and the insertion hole during installation and use, improves the installation convenience and practicality of the lock, and ensures normal operation of the lock even in the presence of certain installation errors.

[0025] Further, when the first action module pushes the mounting plate to move, the mounting plate pushes the sleeve through the spring.

[0026] The beneficial effects of the above further scheme are:

[0027] When the first action module works and pushes the mounting plate to move, the mounting plate and the sleeve are connected through the spring. The spring has the characteristics of elastic deformation. During the process of pushing the sleeve by the mounting plate, the spring can stretch or contract according to the actual situation. If the moving speed of the mounting plate is fast or the external resistance is large, the spring will be compressed to absorb part of the energy and avoid the sleeve from being damaged by the excessive impact force. At the same time, the spring can also play a regulating role. When the sleeve encounters slight resistance during the process of being inserted into the insertion hole, the spring can buffer the resistance through its elastic deformation to make the sleeve more smoothly inserted into the insertion hole. Moreover, the elasticity of the spring can compensate for the slight change of the size of the components caused by factors such as temperature change, so that the mounting plate can effectively push the sleeve to complete the corresponding action under different working conditions, and the reliability and adaptability of the lock are improved.

[0028] Further, a heat insulation layer is arranged between the motor and the shell, the heat insulation layer is an aerogel heat insulation pad, the aerogel heat insulation pad is composed of a porous network structure of nano-sized silica particles, the porosity is greater than or equal to 95%, and the thermal conductivity is less than or equal to 0.015 W / (m·K); the heat insulation layer forms a thermal resistance breaking interface with the motor shell and the inner wall of the shell through an adhesive, and the thickness of the heat insulation layer is 2-3 mm.

[0029] The beneficial effects of the above further scheme are:

[0030] The motor generates heat during operation. According to the principle of heat transfer, heat will be transferred from the high-temperature motor to the surrounding environment, including the shell. If there is no heat insulation layer, a large amount of heat will be transferred to the shell, causing the temperature of the shell to rise. Since the shell is usually made of metal materials such as aluminum alloy, the metal material has the characteristics of thermal expansion and contraction. When the temperature rises, the shell will expand. If the temperature is too high and the expansion is too large, it may cause the size of the shell to change, affecting the fitting accuracy of the shell and other components, and even causing the components to be stuck and unable to work normally, and other high-temperature expansion failure problems. The heat insulation layer uses a material with low thermal conductivity to effectively block the transfer of heat, reduce the impact of heat generated by the motor on the shell, and keep the temperature of the shell within a relatively stable range, avoiding failure caused by high-temperature expansion, and ensuring the normal operation and structural stability of the cabinet door lock in high-temperature environment.

[0031] Further, the shell and the lock seat are made of aluminum alloy material, and the surface is provided with an oxidation-resistant coating. The fixing plate is fixed with the cabinet body through stainless steel bolts, and an elastic rubber gasket is arranged in the fixing hole to compensate for the material expansion caused by temperature change.

[0032] The beneficial effects of the above further scheme are:

[0033] The aluminum alloy has the advantages of small density, high strength, good heat conductivity, etc. The outer shell and the lock seat are made of aluminum alloy material, which can reduce the weight of the lock while ensuring the structural strength of the lock. The oxidation-resistant coating on the surface can prevent the aluminum alloy from rusting and corroding due to chemical reaction with oxygen and moisture in the air, thereby prolonging the service life of the outer shell and the lock seat. The fixed plate and the cabinet body are fixed by stainless steel bolts. Stainless steel has good corrosion resistance and can maintain stable performance in different environmental conditions, avoiding the problem of loose connection caused by rust and corrosion of the bolts, and ensuring the firmness of the lock installation. The elastic rubber gasket in the fixed hole has elasticity. When the environmental temperature changes, the expansion coefficients of different materials are different, and the aluminum alloy outer shell and lock seat, cabinet body, and stainless steel bolts will expand or shrink to different degrees. The elastic rubber gasket can compensate for the difference in material expansion caused by temperature changes through its elastic deformation, avoid stress concentration caused by inconsistent material expansion, prevent component damage or loose connection, and ensure the stability and reliability of the lock in different temperature environments.

[0034] The present application provides a cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure under adaptive temperature changes. The cabinet door lock has the following beneficial effects:

[0035] A heat insulation layer is arranged between the motor and the outer shell to reduce the influence of heat generated by the motor on the outer shell and avoid failure caused by expansion of the outer shell due to high temperature. At the same time, the outer shell and the lock seat are made of aluminum alloy material and have an oxidation-resistant coating. The aluminum alloy has good heat dissipation, the coating can prevent oxidation, and can assist in adjusting the temperature to a certain extent. An elastic rubber gasket is arranged in the fixed hole of the lock seat fixed plate to compensate for the expansion of the material under high temperature, avoid stress concentration, and ensure the stability of the installation. The graphite lubricating layer between the lead screw and the sliding sleeve can maintain good lubrication performance in a low-temperature environment, prevent ordinary lubricants from becoming thick or solidifying to cause poor movement of the components, and ensure that the lock can still work normally at low temperature.

[0036] The first action module is composed of an electromagnet and a permanent magnet, which can quickly drive the guide sleeve to be connected with the lock seat, realize quick locking and unlocking, and improve the operation efficiency. The second action module adopts a motor-driven lead screw to make the sliding sleeve move in and out, providing reliable locking function for the lock. The double modules work together to enhance the practicality and reliability of the lock. The limiting groove in the outer shell and the limiting rod on the sliding sleeve cooperate with each other, and the sleeve pipe cooperates with the limiting rod through the second sliding groove, which can effectively limit the movement of the sliding sleeve and the sleeve pipe, ensure the accuracy and stability of the movement of each component, and make the lock action more accurate.

[0037] The sleeve end is provided with a guide slope, and the hole diameter of the socket is larger than the diameter of the sleeve. When the sleeve is misaligned with the socket axis, the guide slope and the socket interact to allow the sleeve to be smoothly inserted into the socket, reducing the difficulty of docking due to position deviation during installation and use, and improving the convenience and versatility of the lock.

[0038] The shell and the lock seat are made of aluminum alloy material and coated with an oxidation-resistant coating, which not only has good heat dissipation, but also effectively prevents oxidation and corrosion, prolonging the service life of the lock. The fixed plate and the cabinet body are fixed by stainless steel bolts, further enhancing the corrosion resistance of the lock and the stability of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate certain illustrative embodiments of the application and together with the description serve to explain the application. The above brief description, as well as further objects, features and advantages of the present application will be better understood with reference to the following detailed description of the preferred but non-limiting embodiments of the application, when read in conjunction with the accompanying drawings.

[0040] In the drawings:

[0041] Figure 1 is a schematic view of the front appearance of the present application;

[0042] Figure 2 is a schematic view of the internal structure of the present application;

[0043] Figure 3 is a schematic view of the unlocking state of the present application;

[0044] Figure 4 is a schematic view of the locking state of the present application;

[0045] Figure 5 is a schematic view of the second action module structure of the present application;

[0046] Figure 6 is a schematic view of the guide sleeve structure of the present application.

[0047] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0048] 1, lock seat; 101, socket; 102, fixed plate; 103, fixed hole; 104, socket; 2, magnetic separation plate; 201, first sliding groove; 3, first action module; 301, connecting plate; 302, connecting shaft; 303, permanent magnet; 304, electromagnet; 4, second action module; 401, motor; 402, screw rod; 403, limiting rod; 404, sliding sleeve; 405, guide head; 5, shell; 501, limiting groove; 6, guide sleeve; 601, mounting plate; 602, spring; 603, sleeve; 604, guide slope; 605, second sliding groove. DETAILED DESCRIPTION

[0049] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0050] Please refer to Figures 1 to 6 The embodiments provided by the present application are shown in the following:

[0051] Embodiment one: a cabinet door lock capable of preventing low-temperature jamming and high-temperature expansion failure under adaptive temperature changes, comprising a shell 5, a lock opening seat 1 installed on one side of the shell 5, a second action module 4 installed inside the shell 5, a guide sleeve 6 sleeved on the output end of the second action module 4, the guide sleeve 6 being provided with a mounting plate 601, a connecting plate 301 being installed on the mounting plate 601, the mounting plate 601 being pushed to move by a spring 602 when a first action module 3 pushes the mounting plate 601 to move, the mounting plate 601 being connected with the sleeve 603 through the spring 602 when the first action module 3 works and pushes the mounting plate 601 to move. The spring 602 has the characteristic of elastic deformation, and can be stretched or contracted according to the actual situation during the process of the mounting plate 601 pushing the sleeve 603. If the moving speed of the mounting plate 601 is fast or the external resistance is large, the spring 602 will be compressed to absorb part of the energy and avoid damaging the sleeve 603 due to excessive impact force. At the same time, the spring 602 can also play a regulating role, and when the sleeve 603 encounters slight resistance during insertion into the insertion hole 104, the spring 602 can buffer this resistance through its elastic deformation, so that the sleeve 603 can be more smoothly inserted into the insertion hole 104. Moreover, the elasticity of the spring 602 can compensate for the slight changes in the size of the components caused by temperature changes and other factors, ensuring that the mounting plate 601 can effectively push the sleeve 603 to complete the corresponding action under different working conditions, improving the reliability and adaptability of the lock. One side of the mounting plate 601 is installed with the spring 602, one end of the spring 602 away from the mounting plate 601 is installed with the sleeve 603, the sleeve 603 is limitingly installed on the sliding sleeve 404 through the cooperation of the second sliding groove 605 and the limiting rod 403, the limiting rod 403 is embedded in the second sliding groove 605 of the sleeve 603, forming a sliding pair structure. This structure makes the installation of the sleeve 603 on the sliding sleeve 404 more stable, and at the same time limits the movement mode of the sleeve 603. The sleeve 603 can only move linearly relative to the sliding sleeve 404 along the direction of the second sliding groove 605, and cannot rotate or deviate at will. When the second action module 4 drives the sliding sleeve 404 to move, the sliding sleeve 404 can drive the sleeve 603 to move through the cooperation of the limiting rod 403 and the second sliding groove 605, ensuring the synchronization and coordination of the movement of the sleeve 603 and the sliding sleeve 404. Moreover, this limiting structure can also prevent the sleeve 603 from shaking or separating from the sliding sleeve 404 during movement, improving the reliability and stability of the entire lock structure and ensuring the smooth performance of the locking and unlocking actions. A limiting groove 501 is opened in the shell 5, the sliding sleeve 404 is limitingly installed in the shell 5 through the cooperation of the limiting rod 403 and the limiting groove 501, and the limiting rod 403 on the sliding sleeve 404 cooperates with the limiting groove 501 in the shell 5 to play a guiding and limiting role in the movement of the sliding sleeve 404.The limiting groove 501 defines the movement path of the sliding sleeve 404, and the sliding sleeve 404 can only move linearly in the limiting groove 501, avoiding deviation or shaking of the sliding sleeve 404 during movement. When the motor 401 of the second action module 4 drives the screw rod 402 to rotate, the sliding sleeve 404 moves up and down under the action of the screw rod 402, and the limiting rod 403 slides in the limiting groove 501, ensuring the linearity and accuracy of the movement of the sliding sleeve 404. This limiting structure can effectively reduce the friction and collision between the sliding sleeve 404 and other components, reduce the wear of the components, prolong the service life of the components, and improve the working accuracy and stability of the entire lock. The end of the sleeve pipe 603 is provided with a guide inclined surface 604, a second sliding groove 605 is formed through the sleeve pipe 603, and the connecting plate 301 is connected with the mounting plate 601. When the first action module 3 drives the connecting plate 301 to move, the connecting plate 301 drives the mounting plate 601 to move synchronously. The mounting plate 601 is connected with the sleeve pipe 603 through the spring 602, and the spring 602 has elasticity. During the movement of the mounting plate 601, the spring 602 can play a buffering and adjusting role. When the mounting plate 601 moves at a high speed or is impacted by the outside, the spring 602 can absorb part of the energy, avoiding damage to the sleeve pipe 603 due to excessive impact force. The guide inclined surface 604 at the end of the sleeve pipe 603 has a guiding effect. When the sleeve pipe 603 needs to be inserted into the insertion hole 104 of the lock mouth seat 1, if there is a certain misalignment between the sleeve pipe 603 and the axis of the insertion hole 104, the guide inclined surface 604 contacts the edge of the insertion hole 104, and under the action of the inclined surface, a component force that moves the sleeve pipe 603 towards the axis of the insertion hole 104 is generated, so that the sleeve pipe 603 can automatically adjust the position and smoothly insert into the insertion hole 104, improving the success rate and convenience of the connection. The second sliding groove 605 on the sleeve pipe 603 provides limiting and guiding functions for the installation and movement of the sleeve pipe 603, cooperates with other components to ensure that the sleeve pipe 603 can only move in a specific direction, and ensures the accuracy and stability of the movement. The first action module 3 is installed on the outside of the shell 5, the electromagnet 304 is arranged on the first action module 3, the permanent magnet 303 is arranged on one side of the electromagnet 304, the connecting shaft 302 is connected to the permanent magnet 303, and the connecting plate 301 is arranged on the connecting shaft 302. When the electromagnet 304 is powered, the electromagnet 304 generates a magnetic field. According to the electromagnetic principle, the current direction determines the magnetic field direction, and the magnetic field generated by the electromagnet 304 can interact with the magnetic field of the permanent magnet 303 to generate an attractive force or a repulsive force. When the attractive force is generated, the electromagnet 304 attracts the permanent magnet 303, and the permanent magnet 303 drives the connecting plate 301 to move towards the electromagnet 304 through the connecting shaft 302; when the repulsive force is generated, the electromagnet 304 pushes away the permanent magnet 303, and the connecting plate 301 moves away from the electromagnet 304.The driving mode using electromagnetic force has fast response speed, can realize the movement of the connecting plate 301 in a short time, reduces the probability of mechanical wear and failure compared with the traditional mechanical driving mode, improves the working efficiency and stability of the first action module 3, and further provides a powerful guarantee for the rapid locking and unlocking of the entire cabinet door lock. The magnetic separation plate 2 is installed between the shell 5 and the first action module 3, the first action module 3 is in transmission connection with the guide sleeve 6, the guide sleeve 6 is driven by the first action module 3 and is in butt joint with the lock port seat 1, the second action module 4 is provided with a motor 401, a heat insulation layer is arranged between the motor 401 and the shell 5, the heat insulation layer is an aerogel heat insulation pad, the aerogel heat insulation pad is composed of a porous network structure of nano-sized silicon dioxide particles, the porosity is greater than or equal to 95%, and the thermal conductivity is less than or equal to 0.015 W / (m·K); the heat insulation layer forms a thermal resistance breaking interface with the motor 401 shell and the inner wall of the shell 5 through an adhesive, the thickness of the heat insulation layer is 2-3 mm, and the motor 401 generates heat during the working process. According to the heat transfer principle, heat will be transferred from the high-temperature motor 401 to the surrounding environment, including the shell 5. If there is no heat insulation layer, a large amount of heat will be transferred to the shell 5, which will cause the temperature of the shell 5 to rise. Since the shell 5 is usually made of metal materials such as aluminum alloy, the metal material has the characteristics of thermal expansion and contraction. When the temperature rises, the shell 5 will expand. If the temperature is too high and the expansion amount is too large, the size of the shell 5 may change, affecting the fitting precision of the shell 5 and other components, and even causing components to be stuck, unable to work normally, and other high-temperature expansion failure problems. The heat insulation layer uses a material with low thermal conductivity to effectively block the transfer of heat, reduce the influence of the heat generated by the motor 401 on the shell 5, and keep the temperature of the shell 5 within a relatively stable range, avoiding the failure caused by high-temperature expansion, ensuring the normal work and stability of the structure of the cabinet door lock in a high-temperature environment. The output end of the motor 401 is provided with a lead screw 402, the lead screw 402 is in threaded connection with a sliding sleeve 404, a graphite lubricating layer is arranged between the lead screw 402 and the sliding sleeve 404, the sliding sleeve 404 moves in extension and retraction through the threaded driving of the lead screw 402, and the end of the sliding sleeve 404 is provided with a guide head 405. After the guide sleeve 6 is in butt joint with the lock port seat 1, the sliding sleeve 404 of the second action module 4 penetrates through the guide sleeve 6 and is inserted into the lock port seat 1.

[0052] Example two: in order to make the lock port seat 1 can compensate the material expansion caused by temperature change, for example, Figures 1 to 6The application also includes: the lock seat 1 is provided with a socket 101, both sides of the socket 101 are provided with fixed plates 102, the fixed plates 102 are provided with fixed holes 103, the socket 101 is provided with a socket 104, the shell 5 and the lock seat 1 are made of aluminum alloy material, the surface is provided with an oxidation-resistant coating, the fixed plates 102 are fixed with the cabinet through stainless steel bolts, the fixed holes 103 are provided with elastic rubber washers to compensate for the material expansion caused by temperature changes, the aluminum alloy has the advantages of small density, high strength and good thermal conductivity, and the shell 5 and the lock seat 1 are made of aluminum alloy material, which can reduce the weight of the lock while ensuring the structural strength of the lock, and is convenient to install and use. The oxidation-resistant coating on the surface can prevent the aluminum alloy from rusting and corroding due to chemical reaction with oxygen and moisture in the air, prolonging the service life of the shell 5 and the lock seat 1. The fixed plates 102 are fixed with the cabinet through stainless steel bolts, and the stainless steel has good corrosion resistance and can maintain stable performance in different environmental conditions, avoiding the problem of loose connection caused by rust and corrosion of the bolts and ensuring the firmness of the lock installation. The elastic rubber washers in the fixed holes 103 have elasticity, and when the environmental temperature changes, the expansion coefficients of different materials are different, and the aluminum alloy shell 5, the lock seat 1, the cabinet and the stainless steel bolts and other components will expand or shrink to different degrees. The elastic rubber washer can compensate for the difference in material expansion caused by temperature changes through its elastic deformation, avoid stress concentration caused by inconsistent material expansion, prevent component damage or loose connection, and ensure the stability and reliability of the lock in different temperature environments. The sleeve 404 of the second action module 4 and the guide sleeve 6 are inserted into the socket 104 of the lock seat 1, the hole diameter of the socket 104 is greater than the diameter of the sleeve 603, and when the sleeve 603 is misaligned with the axis of the socket 104, the sleeve 603 is inserted into the socket 104 through the interaction of the guide slope 604 and the socket 104. The hole diameter of the socket 104 is greater than the diameter of the sleeve 603, which provides a certain fault tolerance space for the insertion of the sleeve 603 into the socket 104. In the actual installation and use process, due to various factors, the axis of the sleeve 603 and the socket 104 may be misaligned to a certain extent. When this happens, the guide slope 604 at the end of the sleeve 603 comes into play. After the guide slope 604 contacts the edge of the socket 104, under the interaction of the two, according to the principle of force decomposition, a component force that moves the sleeve 603 towards the axis of the socket 104 is generated. With the continuous advancement of the sleeve 603, this component force continuously adjusts the position of the sleeve 603, so that the sleeve 603 gradually aligns with the axis of the socket 104, and finally smoothly inserts into the socket 104. This design reduces the requirement for the alignment accuracy of the sleeve 603 and the socket 104 during installation and use, improves the installation convenience and practicality of the lock, and ensures the normal operation of the lock even in the presence of certain installation errors.

[0053] Working principle:

[0054] The cabinet door lock is mainly composed of a shell 5, a lock opening seat 1, a first action module 3, a second action module 4 and a guide sleeve 6. The shell 5 and the lock opening seat 1 are made of aluminum alloy material and have an oxidation-resistant coating on the surface. The oxidation-resistant coating can prevent the aluminum alloy from oxidizing and prolong its service life. The aluminum alloy itself has good heat dissipation, which helps to cope with high temperature environment. The lock opening seat 1 is fixed to the cabinet body by stainless steel bolts through the fixing holes 103 on the fixing plate 102. The elastic rubber gasket in the fixing hole 103 can compensate for the expansion or contraction of the material when the temperature changes, avoiding structural deformation caused by temperature changes that leads to loose installation.

[0055] A magnetic isolation plate 2 is installed between the shell 5 and the first action module 3 to prevent the magnetic field generated by the first action module 3 from adversely affecting the shell 5 and other components. A heat insulation layer is provided between the motor 401 of the second action module 4 and the shell 5. The heat insulation layer is an aerogel heat insulation pad, which reduces the transfer of heat generated by the motor 401 to the shell 5, prevents the shell 5 from expanding due to high temperature and ensures the stability of the lock in high temperature environment.

[0056] The first action module 3 is provided with an electromagnet 304 and a permanent magnet 303. When the door needs to be locked, the electromagnet 304 is powered, and the electromagnet 304 generates a magnetic field that interacts with the permanent magnet 303 to push the permanent magnet 303 to move. The permanent magnet 303 drives the connecting plate 301 to move through the connecting shaft 302, and the connecting plate 301 is installed on the mounting plate 601 of the guide sleeve 6, thereby pushing the mounting plate 601 to move. When the mounting plate 601 moves, the sleeve 603 is pushed by the spring 602, causing the guide sleeve 6 to move towards the lock opening seat 1 and butt joint with it. Here, the spring 602 plays a role in buffering and transmitting power, which can adapt to certain installation errors and small deviations during component movement.

[0057] When the guide sleeve 6 is butted with the lock seat 1, the second action module 4 starts to work. The motor 401 is started to drive the screw rod 402 at the output end to rotate. The screw rod 402 is threadedly connected with the sliding sleeve 404, and a graphite lubricating layer is arranged between the screw rod 402 and the sliding sleeve 404. The graphite lubricating layer can keep good lubricating performance at different temperatures, so that the sliding sleeve 404 can be smoothly driven to move in and out when the screw rod 402 rotates. The sliding sleeve 404 is driven by the screw thread of the screw rod 402 to move forward along the limiting groove 501 in the shell 5 (the limiting rod 403 on the sliding sleeve 404 and the limiting groove 501 are matched to realize limiting), penetrates the guide sleeve 6 and is inserted into the insertion hole 104 of the lock seat 1, and the locking action is completed. The sleeve pipe 603 is limitedly installed on the sliding sleeve 404 through the second sliding groove 605 and the limiting rod 403 on the sliding sleeve 404, so as to ensure the stability and accuracy of the movement of the sleeve pipe 603. When the sleeve pipe 603 is dislocated with the axis of the insertion hole 104, the guide inclined surface 604 at the end of the sleeve pipe 603 interacts with the insertion hole 104, so that the sleeve pipe 603 can automatically adjust the position and be smoothly inserted into the insertion hole 104, and the self-adaptive butt joint is realized.

[0058] When it is needed to be unlocked, the energization state of the electromagnet 304 is changed to generate a magnetic field opposite to the previous one, which interacts with the permanent magnet 303 to pull the permanent magnet 303 to move reversely. The permanent magnet 303 drives the connecting plate 301 to move reversely through the connecting shaft 302, so that the guide sleeve 6 moves away from the lock seat 1 to remove the butt joint of the guide sleeve 6 and the lock seat 1.

[0059] Meanwhile, the motor 401 is reversed to drive the screw rod 402 to rotate reversely, so that the sliding sleeve 404 is driven by the screw thread to shrink backward along the screw rod 402, and is withdrawn from the insertion hole 104 of the lock seat 1 to complete the unlocking process. During the whole process, the graphite lubricating layer between the screw rod 402 and the sliding sleeve 404 still plays a role to ensure that the unlocking action is smoothly performed at different temperatures.

[0060] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0061] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A cabinet door lock that is adaptive to temperature changes and prevents low-temperature jamming and high-temperature expansion failure, comprising a housing (5), a lock seat (1) mounted on one side of the housing (5), and a second action module (4) mounted inside the housing (5), characterized in that: The output end of the second action module (4) is sleeved with a guide sleeve (6); the first action module (3) is installed on the outside of the housing (5); a magnetic isolation plate (2) is installed between the housing (5) and the first action module (3); the first action module (3) is connected to the guide sleeve (6) in a transmission manner; the guide sleeve (6) is driven by the first action module (3) to dock with the lock seat (1); the second action module (4) is provided with a motor (401); the output end of the motor (401) is provided with A screw rod (402), a sleeve (404) is threadedly connected to the screw rod (402), a graphite lubricating layer is provided between the screw rod (402) and the sleeve (404), the sleeve (404) is driven to move telescopically by the thread of the screw rod (402), a guide head (405) is provided at the end of the sleeve (404), and after the guide sleeve (6) is docked with the lock seat (1), the sleeve (404) of the second action module (4) passes through the guide sleeve (6) and is inserted into the lock seat (1); The lock seat (1) is provided with a socket (101), and fixing plates (102) are provided on both sides of the socket (101), and fixing holes (103) are provided through the fixing plates (102). The socket (101) is provided with a socket (104), and the sliding sleeve (404) and the guide sleeve (6) of the second action module (4) are inserted into the socket (104) of the lock seat (1).

2. The cabinet door lock according to claim 1, which is adaptive to temperature changes and prevents low-temperature jamming and high-temperature expansion failure, is characterized by: The first action module (3) is provided with an electromagnet (304), a permanent magnet (303) is installed on one side of the electromagnet (304), a connecting shaft (302) is connected to the permanent magnet (303), and a connecting plate (301) is installed on the connecting shaft (302).

3. The cabinet door lock capable of adaptively adapting to temperature changes and preventing low-temperature jamming and high-temperature expansion failure according to claim 2, characterized in that: The guide sleeve (6) is provided with a mounting plate (601), the connecting plate (301) is mounted on the mounting plate (601), a spring (602) is mounted on one side of the mounting plate (601), a sleeve (603) is mounted on one end of the spring (602) facing away from the mounting plate (601), a guide inclined surface (604) is provided at the end of the sleeve (603), and a second sliding groove (605) is provided through the sleeve (603).

4. The cabinet door lock capable of adaptively adapting to temperature changes and preventing low-temperature jamming and high-temperature expansion failure according to claim 3, characterized in that: The sleeve (603) is mounted on the sliding sleeve (404) by cooperating with the limiting rod (403) through the second sliding groove (605).

5. The cabinet door lock according to claim 1, which is adaptive to temperature changes and prevents low-temperature jamming and high-temperature expansion failure, is characterized by: A limiting groove (501) is provided in the housing (5), and the sliding sleeve (404) is installed in the housing (5) by means of a limiting rod (403) and the limiting groove (501) cooperating with each other in a limiting manner.

6. The cabinet door lock capable of adaptively adapting to temperature changes and preventing low-temperature jamming and high-temperature expansion failure according to claim 1, characterized in that: The aperture of the jack (104) is larger than the diameter of the sleeve (603). When the sleeve (603) and the jack (104) are axially misaligned, the sleeve (603) is inserted into the jack (104) through the interaction between the guide inclined surface (604) and the jack (104).

7. The cabinet door lock capable of adaptively adapting to temperature changes and preventing low-temperature jamming and high-temperature expansion failure according to claim 1, characterized in that: When the first action module (3) pushes the mounting plate (601) to move, the mounting plate (601) pushes the sleeve (603) via the spring (602).

8. The cabinet door lock capable of adaptively adapting to temperature changes and preventing low-temperature jamming and high-temperature expansion failure according to claim 1, characterized in that: A heat-insulating layer is provided between the motor (401) and the housing (5), and the heat-insulating layer is an aerogel heat-insulating pad. The aerogel heat-insulating pad has a porous network structure formed by nano-scale silica particles, a porosity of ≥95%, and a thermal conductivity of ≤0.015 W / (m·K). The heat-insulating layer forms a heat-blocking interface with the motor (401) housing and the inner wall of the housing (5) through an adhesive, and the thickness of the heat-insulating layer is 2-3 mm.

9. The cabinet door lock capable of adaptively adapting to temperature changes and preventing low-temperature jamming and high-temperature expansion failure according to claim 1, characterized in that: The housing (5) and the lock seat (1) are made of aluminum alloy and provided with an anti-oxidation coating on the surface. The fixing plate (102) is fixed to the cabinet body by stainless steel bolts. An elastic rubber gasket is provided in the fixing hole (103) to compensate for material expansion caused by temperature changes.

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