CN217300194U - Front and rear door linkage device for outdoor cabinet - Google Patents

Front and rear door linkage device for outdoor cabinet Download PDF

Info

Publication number
CN217300194U
CN217300194U CN202221133626.6U CN202221133626U CN217300194U CN 217300194 U CN217300194 U CN 217300194U CN 202221133626 U CN202221133626 U CN 202221133626U CN 217300194 U CN217300194 U CN 217300194U
Authority
CN
China
Prior art keywords
connecting rod
door
rear door
stop block
lock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202221133626.6U
Other languages
Chinese (zh)
Inventor
陈杨
罗宁
杨帆
张文
张涛
韩飞
秦剑涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Communication Scientific Research Planning And Design Co ltd
Original Assignee
Sichuan Communication Scientific Research Planning And Design Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Communication Scientific Research Planning And Design Co ltd filed Critical Sichuan Communication Scientific Research Planning And Design Co ltd
Priority to CN202221133626.6U priority Critical patent/CN217300194U/en
Application granted granted Critical
Publication of CN217300194U publication Critical patent/CN217300194U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Casings For Electric Apparatus (AREA)

Abstract

The utility model discloses a front and back door linkage for outdoor rack relates to communication equipment and makes the field, and the door all disposes independent tool to lock around mainly used solves, and the cost increase, thereby the management degree of difficulty increase just appears forgetting to close the back door easily and leads to the rack to be opened, causes the problem that equipment lost, damaged, increase safe risk. The utility model provides a front and back door linkage device for an outdoor cabinet.A connecting rod is arranged in the cabinet along the direction of the front and back doors, and a stop block for preventing the connecting rod from extending backwards is arranged at the inner side of the back door of the cabinet; the rear door is provided with a rotating tongue lock, a lock tongue of the rotating tongue lock is matched with a stop block, the stop block moves along with the shifting of the lock tongue, and the stop block blocks or lets the connecting rod to switch along with the shifting of the lock tongue; the length of the connecting rod is smaller than or equal to the distance between the front door and the rear door of the cabinet and is larger than the distance between the stop block and the front door.

Description

Front and rear door linkage device for outdoor cabinet
Technical Field
The utility model belongs to communication equipment makes the field, particularly, relates to a front and back door linkage for outdoor rack.
Background
The fifth Generation Mobile Communication Technology (5th Generation Mobile Communication Technology, abbreviated as 5G) is a new Generation broadband Mobile Communication Technology with the characteristics of high speed, low time delay and large connection, and is a network infrastructure for realizing man-machine interconnection. The method comprises three major application scenarios of 5G, namely enhanced mobile broadband (eMBB), ultra-high reliability low-delay communication (uRLLC) and massive machine type communication (mMTC). Enhanced mobile broadband (eMBB) is mainly oriented to the explosive growth of mobile internet traffic, and provides more extreme application experience for mobile internet users; the ultra-high reliable low-delay communication (uRLLC) mainly faces to the application requirements of the vertical industry with extremely high requirements on delay and reliability, such as industrial control, telemedicine, automatic driving and the like; the mass machine type communication (mMTC) mainly faces to the application requirements of smart cities, smart homes, environment monitoring and the like which aim at sensing and data acquisition.
The basis of popularization of the 5G network is that a large number of 5G base stations are built, and a large number of outdoor cabinets are needed to be used for achieving the functions of base station equipment placement, alternating current-direct current conversion, storage battery power supply, transmission access and the like. Some outdoor type rack is provided with qianmen and back door, the demand of opening qianmen and back door when equipment maintenance, if like the front and back door all dispose independent tool to lock, because the demand of wisdom fortune dimension management adopts electronic trick lock/fingerprint lock etc. the front and back door respectively will improve the cost greatly, if the front and back door all needs the configuration key if adopting the mechanical lock, increase and lose risk and the management degree of difficulty, and the lock of qianmen back door sets up separately, appears easily forgetting to close the back door to lead to the rack to be opened, cause equipment to lose, damage, increase the security risk.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a front and back door aggregate unit for outdoor rack to the door all disposes independent tool to lock around solving, the cost increase, thereby the management degree of difficulty increase just appears forgetting to close the back door easily and leads to the rack to be opened, causes the problem of equipment loss, damage, increase safe risk.
For realizing the purpose of the utility model, the technical proposal adopted is that: a front and back door linkage device for an outdoor cabinet is characterized in that a connecting rod is arranged in the cabinet along the direction of a front door and a back door, and a stop block for preventing the connecting rod from extending backwards is arranged at the inner side of the back door of the cabinet; the rear door is provided with a rotating tongue lock, a lock tongue of the rotating tongue lock is matched with a stop block, the stop block moves along with the shifting of the lock tongue, and the stop block blocks or lets the connecting rod to switch along with the shifting of the lock tongue; the length of the connecting rod is less than or equal to the distance between the front door and the rear door of the cabinet and is greater than the distance between the stop block and the front door.
Furthermore, the connecting rod penetrates through a baffle with a fixed position, the connecting rod can be axially displaced relative to the baffle, a second limiting nut is arranged on one side, close to a front door, of the baffle on the connecting rod, and a first spring is arranged between the baffle and the second limiting nut.
Furthermore, a first limiting nut is arranged on the connecting rod on the other side of the baffle.
Furthermore, the natural length of the first spring is larger than the distance between the limiting nuts on the two sides of the baffle.
Furthermore, the dog passes through the fixed bolster and is connected with the cabinet body, establishes the guide bar that is used for giving the dog direction on the fixed bolster.
Further, the fixed bolster is including the spacing limit that is used for connecting the installation limit of the cabinet body and prevents that the dog from deviating from.
Furthermore, a second spring is arranged between the limiting edge and the stop block.
Furthermore, the guide rod is connected with the limiting edge.
Furthermore, a flange is arranged at the bottom of the guide rod.
An outdoor cabinet, includes front door and back door, its characterized in that includes above-mentioned arbitrary front and back door aggregate unit.
The utility model has the advantages that:
the utility model discloses a dog control connecting rod's position, front door and back door of linkage rack, needn't all dispose ordinary tool to lock in front door back door, only use in the front door configuration take key or ordinary tool to lock of password, the simple and easy tool to lock that the back door configuration rotatory spring bolt locked, open the front door and get into in the rack and open the back door can, compare with the front and back door all set up the electronic lock, the simple and easy tool to lock is cheap, greatly reduced the cost, compare with the front and back door all set up the mechanical lock, reduced the risk of key loss and the degree of difficulty of key management;
two, the utility model discloses a position of dog control connecting rod, when the back door does not close, the dog gliding, the connecting rod supports the dog, under the blockking of connecting rod, the qianmen can't close, only closes when the back door, slides on the drive dog, and the dog is crossed to the connecting rod, just can eliminate the hindrance in qianmen, and the qianmen can be closed, has avoided forgetting the locking back door to lead to the rack to be opened, cause the equipment to lose, damage, increase the condition emergence of safe risk.
Drawings
FIG. 1: the structure of the utility model is shown schematically;
FIG. 2: the utility model discloses the state of connecting rod and dog when the back door is locked;
FIG. 3: the utility model discloses the state of connecting rod and dog when the back door is opened;
FIG. 4: the utility model discloses the structural schematic of fixed bolster and dog.
Reference numbers and corresponding part names in the drawings:
the door comprises a door body, a rear door, a lock tongue, a stop block, a connecting rod, a baffle plate, a front door, a stop nut, a first limiting nut, a first spring, a second limiting nut, a fixing support, a limiting edge, a mounting edge, a second spring and a guide rod, wherein the rear door is 1, the lock tongue is 2, the stop block is 3, the connecting rod is 4, the baffle plate is 5, the front door is 6, the first limiting nut is 7, the first spring is 8, the second limiting nut is 9, the fixing support is 10, the limiting edge is 10-1, the mounting edge is 10-2, the second spring is 11, and the guide rod is 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the basis of the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 1 to 3, in order to provide a front and rear door linkage device for an outdoor cabinet of the present invention, a connecting rod 4 is disposed in the cabinet along a front and rear door direction, and a stopper 3 for stopping the connecting rod from extending backward is disposed at an inner side of a rear door 1 of the cabinet; the rear door is provided with a rotating tongue lock, a lock tongue 2 of the rotating tongue lock is matched with a stop block 3, the stop block 3 moves along with the shifting of the lock tongue 2, and the stop block 3 stops or lets the connecting rod 4 switch along with the shifting of the lock tongue 2; the length of the connecting rod 4 is less than or equal to the distance between the front door and the rear door of the cabinet and is greater than the distance between the stop block 3 and the front door 6.
Specifically, in the embodiment of this example, the back door 1 is provided with a swing bolt lock, the rotating handle drives the bolt 2 to rotate, the bolt 2 rotates to be horizontal, the back door 1 is locked, the bolt 2 rotates to be vertical, and the back door 1 can be opened. Dog 3 installs in the hookup location department of spring bolt and door frame, can reciprocate by 1 lock spring bolts drive of back door, when spring bolt 2 changes to the level, dog 3 is in shelters from the position, when the spring bolt changes to vertical, dog 3 leaves and shelters from the position. The connecting rod 4 is arranged along the wind direction of the front door and the rear door, and the length of the connecting rod 4 is smaller than or equal to the distance between the front door and the rear door of the cabinet and is larger than the distance between the stop block 3 and the front door 6. When the rear door 1 is opened, the stop block 3 is arranged at the shielding position, the front door 6 is closed at the moment, the front door 6 pushes the connecting rod 4 to move towards the rear door, one end of the connecting rod 4 abuts against the stop block 3, the other end of the connecting rod 4 exceeds the position where the front door 6 is closed, and the front door 6 cannot be closed, so that the situation that the rear door 1 is forgotten to be locked, a cabinet is opened, equipment is lost and damaged, and safety risk is increased is avoided; when the rear door 1 is closed, the stop block 3 leaves the shielding position, the front door 6 is closed at the moment, the front door 6 pushes the connecting rod 4 to move towards the rear door, one end of the connecting rod 4 passes over the stop block 3, the other end of the connecting rod 4 does not exceed the position where the front door 6 is closed, and the front door 6 can be normally closed.
The second embodiment:
on the basis of the first embodiment, the connecting rod 4 penetrates through the baffle 5 fixed in position, the connecting rod 4 can be displaced relative to the baffle along the axial direction, the first limiting nut 7 is arranged on one side, close to the rear door, of the baffle 5 on the connecting rod 4, the second limiting nut 9 is arranged on one side, close to the front door 6, the first spring 8 is arranged between the baffle 5 and the second limiting nut 9, and the natural length of the first spring 8 is larger than the distance between the first nut 7 and the second limiting nut 9.
Specifically, in the embodiment of the example, the position of the baffle 5 is fixed, a through hole is formed in the baffle 5, the connecting rod 4 passes through the through hole, the diameter of the through hole is larger than that of the connecting rod 4, a first limiting nut 7 is arranged on the connecting rod 4 on one side of the baffle 5 close to the rear door, a second limiting nut 9 is arranged on one side close to the front door 6, and the outer diameter of the limiting nut is larger than that of the through hole in the baffle 5; set up first spring 8 between baffle 5 and second stop nut 9, first spring 8 cup joints on connecting rod 4, and the natural length of first spring 8 is greater than the distance between two nuts.
The baffle 5 is fixed in position, the connecting rod 4 moves in the axial direction relative to the baffle 5, and due to the arrangement of the limiting nut, the distance of the movement of the connecting rod 4 relative to the baffle 5 is the distance between the two phase nuts. The natural length of the first spring 8 is larger than the distance between the two nuts, under the condition of not being affected by external force, the first spring 8 compresses the external force which is applied to the nut direction close to the front door 6 and faces the front door 6, the connecting rod 4 is driven to move towards the front door 6, one end, close to the rear door 1, of the connecting rod 4 is far away from the stop block, the connecting rod 4 extends out of the door frame of the front door 6 and blocks the front door 6 from being closed, and therefore the situation that the front door 6 is suddenly closed due to blowing or the fact that people touch the front door 6 carelessly to cause injury to the people is avoided; on the other hand, when the front door 6 is closed, the connecting rod 4 passes over the stop block, which may cause a block to the rotation opening of the latch bolt, and the block can play a role of preventing the rear door 1 from being opened when the front door 6 is closed, and needs to be contacted when the rear door 1 needs to be opened, and the first spring 8 can automatically bounce the connecting rod 4 away from the position blocked by the latch bolt of the rear door 1 when the front door 6 is opened, so that the block is automatically eliminated, and the rear door 1 can be normally opened.
Example three:
as shown in fig. 4, on the basis of the first or second embodiment, the stopper 3 is connected to the cabinet body through the fixing bracket 10, the fixing bracket 10 is provided with a limiting edge 10-1 for preventing the stopper 3 from coming off and a guide rod 12 for guiding the stopper 3, one end of the guide rod 12 is connected to the limiting edge 10-1, and the bottom of the other end is provided with a flange.
Specifically, in the embodiment of this example, the stopper 3 is connected with the cabinet body through the fixed bolster 10, has made things convenient for on-the-spot installation and operation, avoids on-the-spot assembling debugging because the difference of manual operation causes the installation unqualified, causes the linkage function to can not realize. The fixed support 10 comprises a mounting edge 10-2 and a limiting edge 10-1, the mounting edge 10-2 is used for being connected with the cabinet body, and the limiting edge 10-1 is used for mounting a guide rod 12 and limiting a stop block 3 to prevent the stop block 3 from being separated. The guide rod 12 is used for guiding the stopper 3 and limiting the moving direction of the stopper 3, one end of the guide rod 12 is connected with the limiting edge 10-1, and a flange is arranged at one end of the guide rod 12, so that the stopper 3 is prevented from being separated from the guide rod 12, and the flange also limits the shielding position of the stopper 3.
The lock tongue of the door lock of the back door 1 is locked when being horizontal and rotates downwards to be vertical when being opened. The stop dog 3 is in intermittent lap joint with the lock tongue and is driven by the lock tongue to slide up and down. When the door lock of the back door 1 is locked, the bolt is horizontal, the bolt is contacted with the stop dog 3, and the connected slide block is parked at the position. The position of the connecting rod 4 is lower than that of the stop block 3, when the front door 6 is closed, the front door 6 applies force to the connecting rod 4 towards the rear door 1, the connecting rod 4 moves towards the rear door 1, the front door 6 passes the stop block 3, and the front door 6 is normally closed. When the front door 6 is opened, the connecting rod 4 pops out towards the front door 6, when the rear door 1 is opened, the bolt rotates downwards to be vertical, the stop dog 3 loses the bolt support, slides downwards under the action of gravity, and stops when sliding to the flange position, the position is the shielding position of the stop dog 3, at the moment, if the front door 6 is closed, the force applied to the connecting rod 4 towards the rear door 1 by the front door 6 is applied to the connecting rod 4, the connecting rod 4 moves towards the rear door 1 and abuts against the stop dog 3, and because the length of the connecting rod 4 is greater than the distance between the stop dog 3 and the front door 6, the connecting rod 4 extends out of the door frame of the front door 6, and the front door 6 cannot be closed. The back door 1 is closed, the door lock of the back door 1 is locked, the spring bolt rotates upwards, the stop dog 3 is in lap joint with the spring bolt and is driven by the spring bolt to move upwards, and the stop dog leaves the shielding position.
Example four:
on the basis of the third embodiment, a second spring 11 is arranged between the limiting edge 10-1 and the stop block 3.
Specifically, in this exemplary embodiment, the second spring 11 is fitted around the guide bar 12, and is disposed between the limit edge 10-1 and the stopper 3.
The lock tongue of the door lock of the back door 1 is locked when being horizontal and rotates downwards to be vertical when being opened. Second spring 11 compression limit when the spring bolt level, position slider not only receives decurrent gravity when moving down to sheltering from the position, still receives the decurrent elasticity of second spring 11, assurance dog 3 that can be better stably reachs and shelters from the position.
When the lock tongue of the door lock of the back door 1 is horizontal, the lock tongue is locked, and when the lock tongue is rotated upwards to be vertical during opening, the second spring 11 is stretched when the lock tongue is horizontal. When opening back door 1, the spring bolt upwards rotates to vertical, and dog 3 loses the spring bolt and draws, and second spring 11 elasticity is greater than dog 3 gravity, and the opposite direction upwards slides under the elastic force effect, and dog 3 no longer shifts up when second spring 11 elasticity is equal with dog 3 gravity, and this position is the position that shelters from of dog 3.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A front and back door linkage device for an outdoor cabinet is characterized in that a connecting rod (4) is arranged in the cabinet along the front and back door direction, and a stop block (3) for stopping the connecting rod from extending backwards is arranged on the inner side of a back door (1) of the cabinet; the rear door is provided with a rotating tongue lock, a lock tongue (2) of the rotating tongue lock is matched with a stop block (3), the stop block (3) moves along with the shifting of the lock tongue (2), and the stop block (3) blocks or lets the connecting rod (4) to switch along with the shifting of the lock tongue (2); the length of the connecting rod is less than or equal to the distance between the front door and the rear door of the cabinet and is greater than the distance between the stop block and the front door.
2. The front and rear door linkage device for the outdoor cabinet as claimed in claim 1, wherein the connecting rod (4) passes through a fixed baffle (5), the connecting rod (4) can be displaced relative to the baffle (5) along the axial direction, a second limit nut (9) is arranged on the connecting rod (4) at one side of the baffle (5) close to the front door, and a first spring (8) is arranged between the baffle (5) and the second limit nut (9).
3. A front and rear door linkage for an outdoor cabinet according to claim 2, characterized in that a first limit nut (7) is provided on the connecting rod on the other side of the baffle.
4. A front-rear door linkage for an outdoor cabinet according to claim 3, characterized in that the natural length of the first spring (8) is greater than the distance between the first limit nut (7) and the second limit nut (9).
5. A front and rear door linkage for an outdoor cabinet according to claim 2, wherein the block (3) is connected to the cabinet body by a fixing bracket (10), and a guide rod (12) for guiding the block (3) is provided on the fixing bracket (10).
6. A front and rear door linkage device for an outdoor cabinet as claimed in claim 5, characterized in that the fixing bracket (10) comprises a mounting edge (10-2) for connecting the cabinet body and a limit edge (10-1) for preventing the stopper (3) from being removed.
7. A front and rear door linkage for an outdoor cabinet according to claim 6, characterized in that a second spring (11) is arranged between the position limiting edge (10-1) and the stop (3).
8. A front-rear door linkage for an outdoor cabinet according to claim 1, characterized in that the guide bar (12) is connected to the position-limiting edge (10-1).
9. A front and rear door linkage for an outdoor cabinet according to claim 1, wherein the guide bar (12) is flanged at the bottom.
10. An outdoor cabinet comprising a front door and a rear door, comprising the front-rear door linkage of any one of claims 1 to 9.
CN202221133626.6U 2022-05-11 2022-05-11 Front and rear door linkage device for outdoor cabinet Active CN217300194U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221133626.6U CN217300194U (en) 2022-05-11 2022-05-11 Front and rear door linkage device for outdoor cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221133626.6U CN217300194U (en) 2022-05-11 2022-05-11 Front and rear door linkage device for outdoor cabinet

Publications (1)

Publication Number Publication Date
CN217300194U true CN217300194U (en) 2022-08-26

Family

ID=82917501

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221133626.6U Active CN217300194U (en) 2022-05-11 2022-05-11 Front and rear door linkage device for outdoor cabinet

Country Status (1)

Country Link
CN (1) CN217300194U (en)

Similar Documents

Publication Publication Date Title
CN105275278A (en) Intelligent lock based on storage cabinet of Internet of Things and operation method of intelligent lock
CN109538022B (en) Intelligent lock capable of automatically locking and unlocking and reversing lock tongue
CN107514192B (en) Passive unlocking device for rail vehicle sliding door system
CN213046106U (en) Storage cabinet
CN217300194U (en) Front and rear door linkage device for outdoor cabinet
CN207377310U (en) Bin intelligent lock control system
CN201318076Y (en) Locking device
CN112377740A (en) Intelligent substation clock synchronization control portable device
CN217269470U (en) Single-lock double-control device for outdoor cabinet
CN101593381A (en) Fingerprint identification device
CN214589114U (en) Locking handle mechanism of rack power
CN212428378U (en) Novel electronic control cabinet lock
CN208218154U (en) Anti-pumping device prevents carriage oppressive or the safety device and lift car of emergency stop
CN110629919B (en) Building steel structure
CN109629951B (en) Intelligent door and intelligent access control system
CN213071799U (en) Electrical switch cabinet
CN111910999A (en) Aerogenerator entrance guard and use its aerogenerator tower section of thick bamboo door
CN217001317U (en) Motor-controlled cabinet lock
CN221256428U (en) Electric control cabinet door lock
CN216218196U (en) Environmental protection data acquisition transmitter
CN211038126U (en) Intelligent lock clutch and intelligent lock
CN214504477U (en) Data recording fingerprint lock
CN209990295U (en) Door limit structure and equipment
CN214663254U (en) Intelligent monitoring device for building
CN110213916B (en) Linkage self-locking explosion-proof control cabinet

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant