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68results about How to "Insert implementation" patented technology

Projection bolt welding method, and welding apparatus

Provided are a welding method and a welding apparatus, which can start the proper advance of an electrode on the basis of both the positioning of the welded portion of a projection bolt with respect to a steel sheet and the completing state of the feed of the projection bolt with respect to the electrode. In the welding method, a bolt (10) held by a feed rod (17) is inserted into a receiving hole (20) of an electrode (6). Air is injected from a holding head (18) thereby to complete the bolt insertion into the receiving hole (20). Then, the feed rod (17) is retracted. After this, the electrode (6) is advanced to weld the bolt to a steel sheet (30) by the electric resistance method. In response to the signal issued by the insertion of the bolt and the signal issued by the positioning of the welded portion of the steel sheet (30), the electrode (6) is advanced relative to the steel sheet (30), and the pressurization and the power feed are then performed.
Owner:青山好高

Method and system of setting up reference signal for multiplexing service data

The method comprises: for each cell, allocating the first reference signal used for estimating the channel for bearing non broadcast and multicast service data, and the second reference signal used for estimating the channel for bearing the Broadcast and multicast data; each cell inserts the first reference signal into the non broadcast and multicast service data subcarrier in the subframe multiplexed with the broadcast service data and non broadcast service data, and inserts the second reference signal into the broadcast and multicast service data subcarrier in the subframe multiplexed with the broadcast and multicast service data and non broadcast and multicast data, and sends them to the user end.
Owner:HUAWEI TECH CO LTD

Buffer device and folding table

The invention provides a buffer device and a folding table.The buffer device is simple in structure, wherein the manufacture is easy and inexpensive, and the small-sized lightweight is realized. Meanwhile, the waste treatment is performed.The folding and unfolding operation of the folding table is performed by the buffer device.The folding table is easy in structure, wherein the manufacture is easy and inexpensive, the small-sized lightweight is realized and the design is improved while ensuring the operation to be smooth and safe.A telescopic action member can be movably accommodated in the main body of the buffer device. One end of the action member is connected to a load part.The load part can be displaced.when the load part is displaced, the movement of the action member can be braked or buffered.A movable body accommodated inside the main body can move along the axial direction thereof and the action member is movably accommodated inside the movable body.A retainer of a tapered portion is arranged at the circumferential surface of the movable body.When the action member is moved, the tapered portion is detachably inserted between a clamp part arranged inside the main body and the circumferential surface of the action member.
Owner:HUIBIES FURNITURE

Virtual content insertion system and method based on augmented reality

The invention discloses a virtual content insertion system based on augmented reality. The system comprises a positioning mark; a shooting apparatus which shoot a image in a physical area and captures the positioning mark; and a processing unit which calculates a projection matrix of the shooting apparatus and determines a scope of a display area on the basis of positioning mark information, and calculates a transformation matrix from pixel coordinates representing the scope of virtual content to be inserted to physical coordinates representing the scope of the display area. The processing unit performs three-dimensional transformation on the virtual content to be inserted by use of the transformation matrix and then transforms the virtual content subjected to the three-dimensional transformation again by use of the projection matrix so as to insert the transformed virtual content into the display area displayed by the image. The invention further correspondingly discloses a virtual content insertion method. According to the invention, the virtual content to be inserted can be displayed in real time in the scope of the display area of the corresponding physical area in the image in a mode of augmented reality such that non-invasive personalized live-broadcast advertisement insertion is realized.
Owner:ZHONGAN INFORMATION TECH SERVICES CO LTD

Advertisement insertion method, apparatus and system, server and client

The invention provides an advertisement insertion method, apparatus and system, a server and a client. The method comprises the steps of judging whether a first page request contains an advertisement request or not when the first page request from the client is received; intercepting the first page request when it is judged that the first page request does not contain the advertisement request; sending return data in a predetermined format to the client, wherein the return data comprises a to-be-requested advertisement address and a page address in the first page request; judging whether a second page request contains the advertisement request or not when the second page request from the client is received; and sending a page request and the advertisement request in the second page request when it is judged that the second page request contains the advertisement request. According to the scheme, the insertion of advertisements is realized under the condition of keeping address information of an original page accessed by a user unchanged, so that the phenomenon of advertisement interception caused by illegal address information of the original page is avoided and the advertisement release efficiency is improved.
Owner:BEIJING SAFESOFT GREATMAKER CO LTD

Fast drilling type pulse retracting hand drill

InactiveCN104923826ARetraction realizedRealize reverse retractionEdge grinding machinesPortable grinding machinesHand shakesGear wheel
The invention relates to a processing tool, in particular to a fast drilling type pulse retracting hand drill. The fast drilling type pulse retracting hand drill comprises a support; a main shaft is rotatably connected to the support; a driving bevel gear is arranged on the main shaft in a sleeving manner; a driving disc is arranged on the support; the driving disc is rotatably connected with the support through a rotating shaft; the edge of the driving disc is provided with driving teeth which are meshed with the bevel gear; a clutch mechanism is arranged at the rotating shaft; a reverse rotating mechanism is arranged between the rotating shaft and the driving bevel gear; the end face, close to the driving bevel gear, of the support is provided with a section of pulse bulge; and the end face, close to the support, of the driving bevel gear is provided with a pulse lug. The fast drilling type pulse retracting hand drill has the beneficial effects that reverse rotating retracting with pulse frequency can be realized, hand shaking direction does not need to be changed, the hand shaking speed is stable, and the like.
Owner:ZHEJIANG SCI-TECH UNIV

Method, IPTV system and user equipment for realizing advertisement insertion

The invention provides a method, a system and user equipment for realizing advertisement insertion in an IPTV system. If advertisement needs to be inserted during the period of playing the current program on the user equipment, the method comprises the following steps: (a) during the period of playing the current program, a user terminal acquires and stores the insertion information of the relatedadvertisement of the current program from a system side, wherein the insertion information of the related advertisement comprises the time point information when the related advertisement is insertedinto the current program; (b) the user terminal stops playing the current program at the time point and simultaneously plays the related advertisement; and (c) after the related advertisement is played, the user terminal continues to play the current program from the time point. The invention provides an effective solution of advertisement insertion.
Owner:ZTE CORP

Multifrequency area array ultrasonic endoscopic system

The invention a multifrequency area array ultrasonic endoscopic system. An ultrasonic probe portion includes a high frequency ultrasonic probe portion for ultrasonically scanning an affected part in the body under test, and a low frequency ultrasonic probe portion for ultrasonically treating the affected part in the body under test. An insert portion is guided into the body under test; the ultrasonic probe portion is in ultrasonic fit with a treating instrument during ultrasonic scanning; the high frequency ultrasonic probe portion scans and images the affected part in the body under test; after a predetermined treatment region is attained, the low frequency ultrasonic probe portion provides ultrasonic treatment for the affected part; after the affected part in the body under test is scanned by high frequency ultrasonic scanning, ultrasonic treatment can be carried out directly through low frequency ultrasound; the ultrasonic endoscopic system can be inserted into the body under test once, ultrasonic imaging and ultrasonic treatment are carried out at the same time, and burden is relieved for the patient.
Owner:SHENZHEN INST OF ADVANCED TECH

Impulse type portable drill

InactiveCN104923822ARealize reverse retractionRealize retractionPortable drilling machinesImpulse frequencyGear wheel
The invention relates to machining tools, in particular to an impulse type portable drill. The impulse type portable drill comprises a support, and a spindle is rotatably connected to the support; the spindle is sleeved with a driving bevel gear, and a driving disc is arranged on the support; the driving disc is rotatably connected with the support through a rotating shaft, and driving teeth are arranged on the edge of the driving disc; and the driving teeth are meshed with the bevel gear. A clutch mechanism is arranged on the rotating shaft, and a reverse mechanism is arranged between the rotating shaft and the driving bevel gear; a segment of impulse protrusions is arranged on the end face, close to the driving bevel gear, of the support, and an impulse protruding block is arranged on the end face, close to the support, of the driving bevel gear. The impulse type portable drill has the beneficial effects that reverse tool retracting of the impulse frequency can be achieved, the hand cranking direction is not required to be changed, and the stable hand cranking speed is ensured.
Owner:ZHEJIANG SCI-TECH UNIV

Embedded anchoring type concrete crack repairing process

The invention discloses an embedded anchoring type concrete crack repairing process, and belongs to the technical field of concrete repairing. A repairing rod is inserted into a repairing groove cavity, a plurality of transverse anchoring rods with the inner ends bonded with inner embedded rods are distributed on the end wall of an outer inserting rod from bottom to top, after a heated crack repairing agent is injected into the repairing groove cavity through the inner embedded rods, the inner embedded rods are heated to enable the inner ends of the transverse anchoring rods to be separated from the inner embedded rods and the outer inserting rod in sequence, a plurality of transverse anchoring rods are embedded into the crack repairing agent, the outer tip ends of the transverse anchoringrods are inserted into the repairing groove cavity to achieve the anchoring effect, then the outer inserting rod is pulled out upwards, secondary material injection is carried out, a concrete supplementing layer is formed in the crack repairing cavity, the inner embedded rods, a conical material guide part and the plurality of transverse anchoring rods are embedded into the repairing groove cavity, and the multiple transverse anchoring rods are distributed up and down, so that the transverse bonding degree between the concrete supplementing layer and the repairing groove cavity and the overall mechanical strength are effectively enhanced to a certain extent.
Owner:高洋

Multifunctional impulse retracting hand drill

The invention relates to a processing tool, in particular to a multifunctional impulse retracting hand drill. The multifunctional impulse retracting hand drill comprises a support, wherein the support is rotationally connected with a main shaft; the main shaft is sleeved with a driving bevel gear; a driving disk is arranged on the support, and is rotationally connected with the support by a rotating shaft; driving teeth are arranged at the edge of the driving disk, and are engaged with the driving bevel gear; a clutch mechanism is arranged at the rotating shaft; a reverse rotating mechanism is arranged between the rotating shaft and the driving bevel gear; an impulse bulge is arranged on the end face, close to the driving bevel gear, of the support; an impulse convex block is arranged on the end face, close to the support, of the driving bevel gear; a driven shaft is fixedly connected with a burr polishing wheel; a containing cavity containing a polishing wheel is arranged at one end, close to the support, of a shoulder sustaining rod; and the shoulder sustaining rod is in threaded connection with the support. The multifunctional impulse retracting hand drill has the benefits that the multifunctional impulse retracting hand drill can realize reverse retracting at an impulse frequency without changing the hand-operated direction, and ensures that a hand-operated velocity is stable.
Owner:ZHEJIANG SCI-TECH UNIV

Foldable hanger

The invention discloses a foldable hanger. The hanger comprises a bracket, suspension arms mounted on two sides of the bracket and a hook mounted on the upper end of the bracket, the bracket comprisesa base and a cover, the base is provided with a sliding block, a guide rail penetrates through the base and the cover plate from front to back, the lower end of the hook is threadedly connected to the upper end of the sliding block and movably penetrates through the base, the end portion of the end, facing the sliding block, of suspension arm is provided with a circular portion, the circular portion is rotatably connected with a rotating shaft, the outer side wall of the circular portion is provided with a plurality of tooth heads, the outer walls of the two sides of the sliding block are provided with rack portions, the front side of the sliding block is provided with a limiting block, the bottoms of grooves in both sides of a long groove are provided with first sawtooth strips, two sides of the rear end face of the limiting block are provided with second sawtooth strips, the outer portion of the guide rail between the limiting block and the cover plate is sleeved with a first spring, and one end, located at the limiting block, of a push rod is in threaded connection with the limiting block; the two suspension arms inside the hanger can be gathered to facilitate the drying of clothes.
Owner:诸暨绿康生物科技有限公司

Reconstruction method and device for data storage failure

ActiveCN106502579AInsert implementationReduce throughput pressureInput/output to record carriersReconstruction methodDATA STORAGE FAILURE
The embodiment of the invention discloses a reconstruction method for a data storage failure. The reconstruction method comprises the following steps that data failed in insertion is registered in a cache region; the data registered in the cache region is aggregated according to service identification information carried by the data; the aggregated data is reinserted in batches. According to the method, by registering the data failed in insertion in the cache region and aggregating the data in the cache region, the total amount of the data failed in insertion is decreased, and the information throughput pressure on storage equipment is decreased; by reinserting the aggregated data in batches, reinserting can be sequentially conducted, the pressure on courses is reduced, and data reinsertion is achieved on the condition that normal operation of services is not affected.
Owner:GUANGZHOU HUADUO NETWORK TECH

Method for inserting filling graphs in map

The invention discloses a method for inserting filling graphs in a map. The method comprises the steps of virtually inserting standard filling graphs in a structure allowing the insertion of the filling graphs in every local area; calculating the graph density of the local area after virtual insertion of the filling graphs, and judging whether the graph density of the local area is larger than equal to the lowest requirement of the graph density of the local area; if the graph density of the local area is larger than equal to the lowest requirements of the graph density of the local area, practically inserting the filling graphs in the structure allowing the insertion of the filling graphs in the local area; if the graph density of the local area is small than the lowest requirement of the graph density of the local area, virtually inserting new filling graphs larger than the filling graphs virtually inserted last time; and continuously repeating the operation until the graph density of the local area after the insertion of the new filling graphs are larger than or equal to the lowest requirements of the graph density of the local area. According to the method, the insertion of the filling graphs in the map can be achieved rapidly, and all the local areas can meet the lowest graph density requirements.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP

Video play list processing method, video playing method and related device

The embodiment of the invention relates to the field of electronic technologies, and in particular relates to a video play list processing method, a video playing method, a related device, electronic equipment and a nonvolatile computer storage medium. The video play list processing method comprises the steps of acquiring a first video play list and a second video play list; and inserting the first video play list into the second video play list to form a spliced video play list, and arranging a splicing label at the joint part of the first video play list and the second video play list. By using the method provided by the embodiment of the invention, dynamic insertion and removal of a first video can be achieved, and only a player is needed; the blocking problem can be avoided, and user experience can be improved.
Owner:LETV HLDG BEIJING CO LTD +1

Self-circulating evaporating cooling distribution transformer

The invention discloses a self-circulating evaporating cooling distribution transformer, relating to the technical field of transformers. The self-circulating evaporating cooling distribution transformer comprises a transformer body, a base and a grounded rod lifting device, wherein the transformer body is fixed on the base, the grounded rod lifting device comprises a first chute, a first contactroller, a first connection rod, a first electric push rod, a second chute, a second contact roller, a second connection rod, a second electric push rod and a grounded rod, a rotary shaft penetrates the upper end of the grounded rod, a round hole penetrates the middle of the base, and the upper part of the round hole is opposite to the lower end of the grounded rod. The two electric push rods are adopted as a power source so as to drive the middles of the two connection rods to move up and down, so that one end of each connection rod can move in the chute through the contact rollers, the otherend of each connection rod and the grounded rod that are coaxially connected move up and down as a whole, therefore, the grounded rod can insert into and pull out from ground automatically, manual operation intensity is relieved, and the grounded rod is replaced more efficiently.
Owner:江西亿晟电气有限责任公司

Pixel circuit, driving method thereof, display panel and display device

PendingCN112037714AReduce motion picture response timeInsert implementationStatic indicating devicesDisplay deviceData signal
The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. A reset module resets a driving module and a light emitting device under the signal control ofa reset signal end; a data writing module writes the signal of the data signal end and the threshold voltage of a driving transistor in the driving module into the grid electrode of the driving transistor under the signal control of a first scanning signal end; a light-emitting control module drives the light-emitting device to emit light under the signal control of a light-emitting control signalend; by arranging a black picture insertion module, after a light-emitting stage in a display frame time period, under the signal control of the second scanning signal end, the driving transistor iscontrolled to be cut off so as to drive the light-emitting device not to emit light, and black pictures can be inserted in the display frame time period; therefore, the purpose of inserting the blackpicture is achieved under the condition that the charging time is ensured, the moving image response time of the display panel is shortened, and the display effect is improved.
Owner:BOE TECH GRP CO LTD +1

Motorized joint for programmable moving machine

The invention relates to a motorized joint (1) for connecting two supports (2, 3), which can be moved relative to each other, of a programmable moving machine having a drive motor (4); a transmission(6) which is drivingly connected downstream of the drive motor (4); and a securing device (16). The motorized joint (1) is characterized in that the securing device (16) is designed and arranged to directly lock an output shaft (5) of the drive motor (4) or a blocking means (20) which is rotationally fixed to the output shaft (5) of the drive motor (4), and the output shaft (5) is rotationally fixed to a driveshaft (27) of the transmission (6) by means of a connection coupling (26). The connection coupling (26) allows a movement of the output shaft (5) relative to the driveshaft (27) when a torque over a specified or specifiable value occurs between the output shaft (5) of the drive motor (4) and the driveshaft (27) of the transmission (6).
Owner:OVALO

Code warehouse system based on labels

The invention discloses a code warehouse system based on labels. The code warehouse system comprises a front-end user module, a search engine and a code warehouse, the front-end user module is used for monitoring an operation instruction of the integrated development environment; the search engine is used for searching a code warehouse according to the operation instruction so as to obtain a target code fragment and a target code label corresponding to the operation instruction, and sending the target code fragment and the target code label to the front-end user module for the integrated development environment to display; and the front-end user module is used for inserting the target code snippet into the code file according to a further operation instruction after display. The system hasthe technical effects that the code warehouse is retrieved by monitoring the user operation, and the corresponding code snippets and code tags are obtained and inserted into the code files, so that on one hand, the computer resources are saved, the computing power requirement of compiling is reduced, and on the other hand, resource waste caused by function addressing is avoided, and on the otherhand, code insertion of the logic content is realized.
Owner:上海睿成软件有限公司

Power supply socket

The invention discloses a power supply socket which comprises a shell installed in a wall, a cover plate groove is formed in the left end face of the shell, a power supply hole is formed in the middleof the right end wall of the cover plate groove, an elastic metal contact is arranged in the middle of the right end wall of the power supply hole, an inserting groove is formed in the top of the right end wall of the cover plate groove, a cover plate is rotatably arranged in the cover plate with through a rotating pin, and the rotating pin is rotationally matched with the bottom of the cover plate. The locking and unlocking operation of the inserting block and the electrifying and power-off operation of the elastic metal contact can be completed at the same time through one motor, the operation is simple and convenient, the investment cost is reduced, and the locking of the inserting block is safe and stable, so that the occurrence of electric shock accidents in the real life is effectively reduced, the people's life safety is guaranteed, and the device is suitable for popularization and use.
Owner:陈涛

Pulse hand drill

InactiveCN104942597ARealize reverse retractionRealize retractionOther manufacturing equipments/toolsDriving apparatusEngineeringMachine tool
The invention relates to a machining tool, in particular to a pulse hand drill which comprises a support. A spindle is rotatably connected on the support, a driving bevel gear is arranged on the spindle in a sleeved manner, a driving disc is arranged on the support and rotatably connected with the same through a rotating shaft, axis of the driving disc is perpendicular to that of the spindle, driving teeth are arranged at the edge of the driving disc and meshed with the bevel gear, a clutch mechanism is arranged at the position of the rotating shaft, a reversing mechanism is arranged between the rotating shaft and the driving bevel gear, the spindle and the support are axially connected slidably, a pulse protrusion section is arranged on an end face, close to the driving bevel gear, of the support, a pulse convex block is arranged on an end face, close to the support, of the driving bevel gear, and the pulse convex block and the driving bevel gear are arranged eccentrically. The pulse hand drill has the advantages that reverse tool retreating at pulse frequency can be realized without changing hand-rocking direction, hand-rocking speed can be ensured to be stable basically, and drilling quality and efficiency can be improved.
Owner:ZHEJIANG SCI-TECH UNIV

Webpage toolbar insertion method and apparatus

The invention discloses a webpage toolbar insertion method. The method comprises: receiving a page browsing request of a user to obtain functional item original data of the request; determining the type of the request according to the content of the request, and matching a to-be-inserted toolbar template in a pre-stored toolbar template; dynamically combining functional buttons of the toolbar template according to the determined request type and the matched toolbar template, and adding a combined functional button to the matched toolbar template; and obtaining toolbar template data corresponding to the toolbar template, and inserting the obtained toolbar template data and the functional item original data of the request into user access data. The invention furthermore discloses a webpage toolbar insertion apparatus.
Owner:ZTE CORP

Method and apparatus for inserting script into Web application

The embodiment of the present invention discloses a method for inserting a script into a Web application. The method comprises: when receiving a web request sent by a client, determining whether the web request carries a static file identifier; if the web request does not carry the static file identifier, determining flow data returned for the web request; searching for a preset keyword in the flow data, and positioning a script inserting position in the flow data by means of the keyword; and finally, inserting the script into the script inserting position in the flow data, and returning the flow data inserted with the script to the client. Compared with the prior art, the method and the apparatus for inserting the script into the Web application implement the insertion of the script into the Web application that completes the deployment in a manner of the flow data.
Owner:BEIJING ONEAPM COMM TECH CO LTD

Pulse percussion drill

InactiveCN104923825BRealize reverse retractionRealize retractionPortable drilling machinesBoring/drilling componentsGear wheelEngineering
The invention relates to a machining tool, in particular to a pulse impact drilling tool. The pulse impact drilling tool comprises a support. The support is rotatably connected with a main shaft. The main shaft is sleeved with a drive bevel gear. A drive disc is arranged on the support and rotatably connected with the support through a rotary shaft. The axis of the drive disc is perpendicular to the axis of the main shaft. Drive teeth are arranged on the edge of the drive disc and engaged with the bevel gear. An engaging and disengaging gear is arranged on the rotary shaft. A reverse rotation mechanism is arranged between the rotary shaft and the drive bevel gear. A segment of pulse protrusion is arranged on the end, close to the drive bevel gear, of the support. A pulse protruding block is arranged on the end face, close to the support, of the drive bevel gear. An oil storage cavity is arranged in a shoulder abutting rod. An oil dripping hole is formed in the end face, close to the support, of the shoulder abutting rod. An oil seal protrusion for plugging the oil dripping hole is arranged at the end, close to the shoulder abutting rod, of the support. The pulse impact drilling tool has the beneficial effects that reversal retraction of pulse frequency can be achieved, the -rocking direction does not need to be changed, and it is guaranteed that the hand-rocking speed is stable.
Owner:ZHEJIANG SCI-TECH UNIV

Improved electric power supply socket

The invention discloses an improved electric power supply socket. The improved electric power supply socket comprises a shell body installed in a wall, a cover plate groove is arranged in the left endface of the shell body, a power supply hole is arranged in the middle of the right end wall of the cover plate groove, an elastic metal contact is arranged in the middle of the right end wall of thepower supply hole, an insertion groove is arranged in the top part of the right end wall of the cover plate groove, the cover plate groove is internally provided with a cover plate capable of rotatingthrough a rotating pin, and the rotating pin is rotatably connected with the bottom part of the cover plate in a matching way. The operations of locking and unlocking an insertion block and the operations of powering on and off of the elastic metal contact are completed at the same time through one motor, the operations are simple and convenient, the investment cost is lowered, the insertion block is safely and stably locked, the electric shock accident in the existing life is effectively reduced, the life safety of people is guaranteed, and the improved electric power supply socket is suitable for popularization and application.
Owner:黄俊凯

Novel power supply socket

The invention discloses a novel power supply socket which comprises a shell, wherein the shell is mounted in a wall; a cover plate groove is formed in the left end surface of the shell; a power supplyhole is formed in the right end wall of the cover plate groove; an elastic metal contact is arranged in the middle of the right end wall of the power supply hole; an insertion groove is formed in thetop of the right end wall of the cover plate groove; a cover plate is rotationally arranged in the cover plate groove through a rotating pin; the rotating pin is rotationally connected with the bottom of the cover plate in match. Locking and unlocking of the insertion block and power on and power off of the elastic metal contact can be completed simultaneously through one motor, the operation issimple and convenient, the investment cost can be reduced, the insertion block can be safe and stably locked, electric shock accidents in the conventional living can be effectively reduced, the life security of people can be ensured, and the novel power supply socket is applicable to popularization and application.
Owner:黄俊凯

A kind of idling anti-pry lock cylinder structure

The present invention provides a idling and tamper-resistant lock core structure, which includes a fixed bracket, and the fixed bracket includes a front circular column and a rear circular column fixed to each other, the front circular column and the rear circular column are coaxially arranged, and the front circular column A circular cylindrical outer ring is arranged inside the ring column, an annular groove is arranged on the inner peripheral surface of the outer ring, and an annular cylindrical inner ring is arranged inside the outer ring. The outer peripheral surface is provided with an annular protrusion surrounding the outer peripheral surface, the annular protrusion is placed in the annular groove, the inner peripheral surface of the inner ring member is provided with a locking tooth, and the front end of the outer ring member is provided with a square groove in the middle, The front end of the inner ring is located on the bottom of the square groove, and the rear end of the inner ring is closed and provided with a slider groove. The grooves of different keys in the present invention will make the angle of rotation between the inner ring and the outer ring different. , Only when the correct key is inserted, can the lock be unlocked. And when the wrong key is inserted, it can be turned but not unlocked.
Owner:NINGDE NORMAL UNIV
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