29results about How to "High locking strength" patented technology

The present invention discloses a locking hinge for a large armrest of a rear seat of a car, comprising a fixed axis component and a movable bracket rotatably sleeved with the fixed axis component, the fixed axis component is provided with a folding limit portion and a use support portion protruding outward, the movable bracket is provided with a positioning shaft, the positioning shaft limits the rotation stroke of the movable bracket between the folding limit portion and the use support portion; a main locking block is rotatably mounted on the movable bracket, a first elastic element is assembled between the main locking block and the movable bracket, when the positioning shaft moves to the inner side position of the folding limit portion, the first elastic element causes the main locking block to apply a thrust to the folding limit portion, so as to force the positioning shaft to keep close contact with the folding limit portion. The beneficial effect of the present invention is that the large armrest can be locked on the backrest of the rear row in a zero-shaking clearance manner.

The utility model discloses training equipment, and belongs to the technical field of training equipment. The training equipment comprises a first machine body, a second machine body and a locking mechanism, a first locking seat is arranged at the rear end of the first machine body, a rotary connecting part is arranged between the front end and the rear end of the first machine body, and a second locking seat is arranged at the front end of the second machine body; the second machine body is rotatably mounted on the rotary connecting part; when the second machine body is in the opening state and the locking mechanism is in the locking state, the first locking base abuts against the second locking base, and the locking mechanism abuts against the first locking base and / or the second locking base so as to limit the first machine body and the second machine body to rotate close to each other. According to the training equipment, the locking mechanism is arranged between the two machine bodies capable of rotating relatively, a certain interval is formed between the rotating connection position and the locking matching position between the two machine bodies, the locking strength of the locking mechanism can be improved, and the stability of the equipment is improved.

A clasp lock suitable for a padlock comprises a lock shell, and the lock shell is provided with an operation space and a driving space which are communicated with each other; a first lock hole is formed in the padlock fixing plate; a second lock hole is formed in the padlock movable plate; the padlock movable plate can move relative to the lock shell so that the second lock hole and the first lock hole can be aligned or staggered. When the second lock hole and the first lock hole are mutually aligned, a padlock can be connected into the second lock hole and the first lock hole; the spring bolt can extend forwards or retract backwards, a linkage block is arranged on the spring bolt, a linkage groove is formed in the padlock movable plate, and the linkage block is inserted into the linkage groove; the buckle is in running fit with the lock shell and abuts against the spring bolt to form transmission fit with the spring bolt. When the buckle lock is repeatedly used, the safety is higher, and when the previous user leaves, the padlock and the user label are detached; and the next user can carry a new padlock and a user label, and the buckle lock is matched and used again.

The utility model provides a battery box body and battery pack, the battery box body specifically comprises a box body frame and at least one battery cell tray, the box body frame comprises a plurality of frame beams and at least one first middle beam, the plurality of frame beams are connected end to end to form an enclosure frame; the space in the enclosure frame is divided into a battery cell placement area and an electrical control area by the first middle beam; at least one battery cell tray is located in the battery cell placing area, the edge of the battery cell tray is fixedly connected with the box body frame through a plurality of fixing pieces, and a circle of sealant is further arranged between the edge of the battery cell tray and the box body frame.

The present invention relates to a seat tilt adjustment mechanism (400) and a vehicle seat including the seat tilt adjustment mechanism (400). The seat tilt adjustment mechanism (400) comprises: a left and a right base link (410a, 410b); a left and a right tilt adjustment link (420a, 420b), wherein lower ends of the left and the right tilt adjustment link (420a, 420b) are hinged to front ends of the left and the right base link (410a, 410b); a left and a right front link (440a, 440b), wherein upper ends of the left and the right front link (440a, 440b) are hinged to front ends of a left and a right link (210a, 210b) of a seat cushion skeleton assembly (200); a transverse link (450), wherein a left end of the transverse link forms a rotary connection with an upper end of the left tilt adjustment link (420a) and a lower end of the left front link (440a) respectively, and a right end of the transverse link (450) forms a rotary connection with an upper end of the right tilt adjustment link (420b) and a lower end of the right front link (440b) respectively; and a driving electric motor mechanism which, by means of a gear-rack structure, can drive the left (420a) and the right tilt adjustment link (420b) to rotate synchronously, so as to adjust a cushion tilt angle.

The invention belongs to the technical field of fluid metering, and discloses a fluid pipe end connection structure of a magnetic resonance flowmeter, which comprises a conversion joint, a connection joint and a locking assembly, the conversion joint comprises a plurality of conversion bodies, the conversion bodies are provided with fitting grooves, the inner walls of the fitting grooves are provided with clamping raised lines, the plurality of conversion bodies are sequentially connected along a ring shape, and the locking assembly is connected with the connection joint. A penetrating hole is defined by the multiple attaching grooves, the multiple clamping protruding strips are spliced to form a clamping protruding ring, the clamping protruding ring is arranged to be clamped in a clamping annular groove in the outer wall of the fluid pipe, the connecting joint is arranged to be fixedly arranged at one end of the metal pipe, the end, away from the metal pipe, of the connecting joint is an abutting end face, and a limiting groove is formed in the abutting end face. A circulation hole communicating with the metal pipe is formed in the groove bottom of the limiting groove, and the locking assembly is connected to the conversion connector and the connecting connector. In the invention, the conversion joint is fixed relative to the axial position of the fluid pipe, so that the acting force during end connection of the fluid pipe can be transmitted, the high-pressure-resistant requirement is met, and the disassembly, assembly and maintenance are simpler and more convenient.

The utility model discloses a reinforced concrete pavement reinforcing positioning device, including a plurality of support mechanism for spacing arrangement along the length direction of reinforcing bar, the support mechanism includes support seat, antiskid sleeve and hoop assembly, install the hole on the support seat, the antiskid sleeve is detachably worn in install the hole and part section is along the axial extension and goes out install the hole, the inner hole of antiskid sleeve is used for wearing reinforcing bar, the hoop assembly is worn on the position of antiskid sleeve and goes out install the hole and is used for the hoop tight antiskid sleeve to pass through antiskid sleeve clamping fixed reinforcing bar. The utility model provides reinforced concrete pavement reinforcing positioning device can adjust the support position flexibly, satisfies the positioning support demand of different reinforcing bar to ensure the positioning accuracy, the convenient quick wearing reinforcing bar, effectively promotes the reinforcing efficiency, and can be adapted to the reinforcing bar of different diameter, and the applicability is strong.

The utility model relates to a hydraulic furnace door locking device. The locking seat and the mounting seat are respectively arranged on the furnace body or the furnace door; a pressed plate is arranged on the locking seat; an upper hinge seat is arranged on one side of the mounting seat, a driven rotating arm is hinged to the tail end of the upper hinge seat, an adjusting seat is arranged at the tail end of the driven rotating arm, a pressing rod is arranged on the adjusting seat, a driving rotating arm is hinged to the middle of the upper hinge seat, a connecting rotating arm and the stroke end of a driving cylinder are hinged to the driving rotating arm, and the tail end of the connecting rotating arm is hinged to the middle of the driven rotating arm. And a lower hinge seat is arranged on the other side of the mounting seat and is hinged with the front end cover of the driving cylinder. The hydraulic furnace door locking device disclosed by the utility model has the advantages of automatic locking and long service life; the locking process is fast, and quick-wear parts do not need to be replaced.

The utility model relates to the technical field of anti-falling devices, in particular to an anti-falling triangular fixing mechanism which comprises a connecting body, one end of the connecting body is provided with an installation portion, the other end of the connecting body is provided with a connecting portion, the connecting portion is connected with a fixing structure, and the fixing structure gradually extends in the direction away from the installation portion. The fixing structure at least comprises two locking rods, one end of each locking rod is connected to the connecting part, the other end of each locking rod is provided with an adjustable locking structure, the two locking rods are oppositely arranged, and the included angle between the two locking rods is 90 degrees. The utility model aims to improve the structural stability of the fixing mechanism and ensure the connection strength.

The utility model provides a kind of operating mechanism for switch cabinet, comprising: rack;Output, rotation is equipped in rack and is linked with linkage piece;Several operating members, limit rotation is equipped in rack and is respectively linked with output position setting, first elastic member is connected between several operating members, first elastic member is used to in one operating member rotation switching station when first compression energy storage release top push operating member rotation;Locking assembly, including rotation is equipped in rack and is locked and is arranged in the linkage piece both sides of several locking members, with several operating members linkage setting and for driving several locking members rotation of several unlocking members, several locking members side recess is equipped with the unlocking slot of the circumferential corresponding linkage piece.Can be through the locking of locking member and be realized when operating mechanism resets to isolation station, immediately through several locking members locking linkage piece, and then locking output, to avoid the situation of operating member continues to drive output swing due to the rebound of first elastic member.

This utility model discloses an inflatable wind turbine transport anti-collision airbag structure, including a transfer frame, a clamping airbag mechanism, a position fixing mechanism, and a stabilizing mechanism. The clamping airbag mechanism includes a longitudinal plate and a mounting plate. The position fixing mechanism includes a clamping tube and a clamping rod. The stabilizing mechanism includes a threaded ring and a clamping ring. Through the cooperation of the longitudinal plate, the mounting plate, and the guide rod, the airbag assembly can slide laterally and adjust its position, achieving flexible clamping and buffering of the wind turbine equipment. It can adapt to equipment of different sizes and shapes, effectively reduce the impact force during transportation, and protect the equipment. Through the meshing and limiting structures such as the clamping tube, clamping rod, internal toothed ring, embedded teeth, and connecting teeth, combined with the cooperation of the rotating plate, positioning spring, and positioning hole, the position of the airbag assembly is accurately locked, preventing loosening and displacement during transportation and improving reliability.

The application discloses a door cover lock module and a washing machine. The door cover lock module comprises a shell with a containing cavity, a bottom with a first opening; a locking piece rotatably installed in the containing cavity, the locking piece comprising a lock hook, the locking piece having a sliding groove; an elastic pressing piece, one end of which is arranged in the containing cavity, the other end of which is slidably arranged in the sliding groove, used for receiving the downward force of the top of the shell to press the locking piece, the sliding in the sliding groove being converted into the driving force for rotating the locking piece, the rotation of the locking piece locking the locking piece in the rotating direction after the lock hook extends out of the first opening to the outside of the shell; a pressing piece, one end of which is fixed to the top of the shell, the other end of which is extended and arranged in the shell to press the upper part of the elastic pressing piece, so that the other end of the elastic pressing piece is located in the sliding groove. The pressing piece of the application presses the elastic pressing piece to rotate in the sliding groove, thereby locking the door cover, and preventing the other end of the elastic pressing piece from being separated from the sliding groove, so as to guarantee the normal use of the door cover lock module.

The invention discloses a universal movement locking mechanism and a surgical instrument, and relates to the field of medical instruments. The universal movement locking mechanism comprises an assembling frame, a movable shell, an outer ball structure and a locking assembly. The locking assembly comprises a plurality of locking pins and first elastic pieces which are arranged in a combined mode. The multiple locking pins are assembled through the multiple assembling holes in the movable shell correspondingly, the first elastic piece acts on the locking pins connected with the first elastic piece to move towards the outer ball structure, and therefore the rotating posture of the outer ball structure and the rotating posture of the first ball sleeve are locked; when the posture of the outer ball structure needs to be adjusted, a user or an external driving device pulls the movable shell through the operation column so as to drive the locking pin to move and recover to compress the first elastic piece so as to unlock the outer ball structure. The combination of the multiple first elastic pieces and the multiple locking pins is used for providing locking acting force of a surrounding area for the outer ball structure, so that the purposes that the locking strength of the locking mechanism is enhanced, and the locking precision and the locking reliability of the ball pair structure are improved are achieved.

The embodiment of the application provides a charging cover locking mechanism and an electric equipment, and relates to the technical field of vehicle accessories. The charging cover locking mechanism comprises: a plate body, which is used for being hingedly connected to a charging bin base body of the electric equipment; a first locking piece, which is movably arranged on the plate body; a second locking piece, which is used for being connected with a charging bin cover plate of the electric equipment, and the first locking piece is used for being moved on the plate body to be clamped with or separated from the second locking piece; and an anti-disengagement piece, which is connected with the first locking piece and is used for preventing the first locking piece from moving when the first locking piece is clamped with the second locking piece. The charging cover locking mechanism and the electric equipment can improve the locking strength between the charging bin cover plate and the charging bin base body, and prevent the charging bin cover plate from being accidentally opened when the vehicle is running.

The utility model relates to the field of door and window lock, especially invisible screen door special lock, including lock installation crossbeam, the both ends of lock installation crossbeam symmetry are inserted into the cavity and are inserted with the buckle mounting seat, the buckle mounting seat is slidably matched with the limit buckle, the lock installation crossbeam front and back surface symmetry is set up and has the lock operation mouth, the lock operation mouth of both sides is provided with first lock mechanism, second lock mechanism respectively, first lock mechanism and second lock mechanism connection and installation are set up in the inside of lock installation crossbeam, the utility model through setting first lock mechanism and second lock mechanism realize the indoor and outdoor double operating system of invisible screen door, support indoor and outdoor flexible unlocking, and the lock tight device that sets up can prevent external forced opening, effectively improve security, the elastic traction rope synchronous traction both sides limit buckle that setting adds the lock catch head of bottom, effectively improve the horizontal locking of screen door bottom, improve locking strength.

The utility model provides a self-locking pneumatic connector, and belongs to the technical field of pneumatic connectors. A self-locking pneumatic connector comprises a pneumatic connector body, the pneumatic connector body is divided into a short section and a long section, and a self-locking assembly is detachably installed at the long section. The self-locking assembly comprises a connecting outer shell, an inner sleeve and a hose connecting opening, the connecting outer shell, the inner sleeve and the hose connecting opening are fixed together, the section of the self-locking assembly is in a Z shape, a hose is arranged on the hose connecting opening in a sleeved mode, and a self-locking ball is movably installed between the inner sleeve and the hose connecting opening. According to the self-locking device for the hose connector, the hose can be automatically locked after being sleeved with the hose connector, and when the flow speed of gas is higher, the impact force is larger, the force of the extrusion ring abutting against and pushing the self-locking ball is larger, so that the locking strength is higher, and the problem that the hose falls off due to the large impact force of the gas is effectively solved.

The utility model relates to GU10 lamp holder technical field discloses a kind of buckle wire insertion type GU10 lamp holder structure, including first installation shell and second installation shell, first installation shell is provided with plastic base, and plastic base is provided with conducting part, first installation shell is provided with buckle, and second installation shell is provided with clamping groove;When first installation shell and second installation shell merge, buckle and clamping groove form clamping cooperation, realize the locking state of first installation shell and second installation shell;Through the clamping cooperation of buckle and clamping groove, the inclined surface cooperation of insertion inclined block and insertion hole, form double mechanical locking structure, effectively enhance the locking strength of first installation shell and second installation shell, avoid the problem of loosening due to external force impact or long-term use;Meanwhile, the elastic deformation characteristics of elastic strip provide pre-tightening force buffer for dismounting operation, so that it can be quickly clamped by elastic deformation during installation, and the locking can be released by pressing elastic strip during disassembly.

The utility model relates to a cabinet machine technical field especially with safe locking cabinet machine. Including top plate, top plate and bottom plate all are provided with the protective cover, and top plate and bottom plate all are provided with a set of interval layout's mounting plate, and the mounting plate is located inside corresponding protective cover, and one mounting plate of two groups is respectively equipped with motor, and the eccentric shaft of rotation is provided between two mounting plates of same group, and the shaft end of eccentric shaft is connected with the output end of same side motor, and one movable plate is respectively set on eccentric shaft. Through setting by motor drive's eccentric shaft, drive movable plate and clamping plate coordinated action, realize the accurate plug -in type clamping of the upper and lower end of the opening and closing door, not only significantly improved the locking strength of cabinet machine whole, also effectively overcame the problem that the traditional mechanical lock only relied on single -point locking caused structure loose and the problem of insufficient pick -resisting performance, thereby greatly improved the security and stability of cabinet machine.

The application discloses a kind of ultra-high voltage busbar flexible butt joint device and method without support insulator, it is related to high voltage cable connection technical field, including insulator and two busbars, further including connecting assembly;The connecting assembly includes the butt block fixedly connected with insulator, fixedly installed with fixed frame and two arc metal rods on the butt block;Two the same end of the arc metal rod is commonly installed with a locking mechanism, and the two ends of the fixed frame are fixedly installed with two limiting mechanisms.Occupational advantages are as follows: first, arc metal rod is equipped with double elastic buffer of buffer spring, energy absorption adaptability is strong, and buffer compensation is more stable;Second, locking and bilateral limiting mechanism cooperate, realize flexible compensation and accurate location, guarantee busbar trajectory controllable;Third, abandon traditional insulator mechanical coupling design, and the anti-shock performance is greatly improved;Fourth, spring plate deformation linkage locking structure, can automatically improve busbar locking strength, more stable operation.

The invention provides a wheel corner zero-locking device suitable for rescue of an electronic guide rubber wheel vehicle, and relates to the technical field of vehicle steering, the wheel corner zero-locking device comprises a zero-locking device body installed between an axle main pin and a steering knuckle, the zero-locking device body comprises a spline pair and an actuator, the actuator comprises a shell, an actuating pressing plate, a rigid spring and a base, the actuating pressing plate is connected with a lower spline of the spline pair, the shell and the base are connected through threads, and the actuating pressing plate and the spline pair can move along the shell and the base. And closed spaces are formed between the shell and the actuating pressing plate, and a rigid spring is arranged in one of the closed spaces. According to the zero locking device, under the condition that a steering control system or a power-assisted steering system of the electronic guide rubber wheel vehicle fails, zero rigid locking which is easy to operate and high in reliability can be provided for the vehicle, it is guaranteed that the vehicle can normally run under the large turning radius, and the work of clearing passengers, returning to a garage and the like is completed.

The utility model provides a headrest overturning structure and an automobile seat, and relates to the technical field of automobile seat equipment. The headrest overturning structure comprises a mounting base, an angle adjuster, a headrest driving piece, a rotating synchronizing shaft and a headrest connecting piece; the headrest driving part is fixedly arranged on the mounting base, the mounting base can be mounted on a seat backrest framework, angle adjusters are arranged at the two ends of the mounting base, and the headrest driving part is in transmission connection with the angle adjusters through a rotating synchronizing shaft; and the headrest connecting piece is arranged on the angle adjuster. The automobile seat comprises the headrest overturning structure. The technical effect of reducing the shaking gap of the headrest is achieved.

The invention relates to a self-locking sliding shoe device which comprises a sliding rail, a sliding shoe body and a hydraulic pushing device. A plurality of clamping grooves are formed in the two sides of the top surface of the sliding rail; the sliding shoe body comprises a sliding support and a jacking supporting frame. The bottom of the sliding support makes sliding contact with the bottom of the sliding groove. The jacking supporting frame is fixed to the top of the sliding support. The hydraulic pushing device comprises a pushing bracket, a driving cylinder, two mounting brackets and four buckles; the bottom of the pushing bracket is in sliding contact with the bottom of the chute; the driving cylinder is fixed in the pushing bracket; an output shaft of the driving cylinder is fixedly connected with the sliding bracket; the two installation supports are fixed to the tops of the two outer side faces of the pushing support. And the four buckles are rotationally mounted in the two mounting brackets through rotating shafts. Self-locking of the hydraulic pushing device is achieved through the buckles and the clamping grooves, the locking strength is high, the slipping phenomenon occurring in the furnace shell pushing process can be avoided, the synchronism of a pushing system is guaranteed, and high-precision pushing is achieved.

The application relates to the technical field of muzzle technology, and particularly discloses a muzzle which can be released by ejection, which comprises a muzzle fixing part, and a muzzle movable part is further installed on the muzzle fixing part; the muzzle movable part is detachably connected to the muzzle fixing part through an ejection mechanism, and the muzzle movable part is an inner recess structure matched with the head of a dog; wherein the ejection mechanism is arranged to facilitate the quick disassembly and assembly between the muzzle fixing part and the muzzle movable part; a binding mechanism is arranged on one side of the muzzle fixing part and used for wearing the muzzle fixing part on the head of the dog; and a surrounding steel sheet is arranged on the outer side of the outer wall of the muzzle movable part and used for increasing the strength of the muzzle movable part. The device provides a quick-response unlocking mechanism, adapts to the use demand of the violent dog in a complex environment, improves the efficiency and safety of task execution, and adopts a voice recognition and button unlocking mode to improve the flexibility of use.

This utility model discloses a foot-operated outdoor plastic trash can, relating to the field of trash can technology. It includes a collection bin with casters equipped with brake locks at the bottom. An opening and closing assembly is installed on the side of the collection bin, and a limiting component is installed along the vertical side of the opening and closing assembly. The limiting component includes a bin lid, and a locking component for engaging the inner bin is located directly opposite the opening and closing assembly. By incorporating the opening and closing assembly and the limiting component, this utility model provides double-sided guidance and locking, ensuring the bin lid falls smoothly when closed without swaying. This ensures a tighter fit between the lid and the bin body, helping to reduce odor leakage and effectively preventing excessive rainwater infiltration. The symmetrical double-sided locking firmly secures both edges of the bin lid, distributing the locking force evenly, improving overall locking strength, and preventing strong outdoor winds and animals such as cats and dogs from prying open the lid from either side.

The invention discloses a lock pin assembly for excavating tooth connection. The lock pin assembly comprises a lock pin, a lock lug and a lock cap. The lock cap comprises a cap head located at the first end and a threaded part located at the second end. A lock hole with an axial opening is formed in the second end of the lock cap; an elastic lock catch is arranged on one side of the junction of the cap head and the thread part; the locking lug comprises a base part on the outer side and a U-shaped bulge on the inner side, the locking lug is provided with a threaded hole, the threaded hole comprises an external threaded section and an internal threaded section, the external threaded section is positioned on the base part, and the internal threaded section is positioned on the inner wall of the inner end of the U-shaped bulge; a locking clamping groove is formed in the hole wall, close to the outer side face, of the threaded hole. A guide limiting groove extending from the outer end face of the locking lug to the threaded hole is formed between two opposite convex edges at the outer end of the U-shaped bulge; in the connecting state, the end of the lock pin slides into the threaded hole along the guide limiting groove, the lock cap is screwed into the threaded hole from the outer side of the lock lug, the end of the lock pin extends into the lock hole and abuts against the bottom of the lock hole, and the elastic lock catch and the locking clamping groove are clamped in a matched mode.

The utility model relates to the technical field of pipeline connection, in particular to a subsea pipeline connecting structure based on a single-point oil discharge berth, which comprises a fixed cylinder, connecting cylinders are symmetrically and slidably mounted on two sides in the fixed cylinder, the end of each connecting cylinder is fixedly connected with a conical sleeve through a pushing disc, and a locking sleeve is arranged on one side, located on the conical sleeve, of the pushing disc. A plurality of two-way screw rods for driving the pushing disc and the locking sleeve to move are arranged on the outer side of the fixed cylinder, and are distributed in an annular array relative to the fixed cylinder; the two sets of pushing discs are pushed to move through rotation of the two-way screw rod, the conical sleeve is pushed to be plugged into the corresponding pipeline, tight initial sealing is formed by means of the contact face between the conical sleeve and the conical sleeve, the pipeline is prevented from being separated from the conical sleeve through movement of the locking sleeve, and meanwhile the sealing performance of connection is further enhanced. Crude oil leakage is effectively prevented, and safety and high efficiency of single-point oil unloading operation are ensured.

The utility model discloses a hot air-based ABS (acrylonitrile butadiene styrene) resin pellet efficient drying device which comprises a treatment bin, a drying device is arranged in the treatment bin, a control device is arranged on one side of the treatment bin and comprises a fixed pipe, a control sleeve, a connecting pipe, a control panel, a control shaft, a control groove and a rotating shaft, and one end of the control panel is rotatably connected with the control sleeve through the rotating shaft; a control shaft arranged on the other side of the control panel is slidably located in a control groove, the control groove is formed in the connecting pipe, a reinforcing mechanism is arranged on the outer side of the fixing pipe and comprises a clamping rail, a clamping spring, a clamping block, a clamping groove, a clamping sleeve and a fixing block, the clamping rail is installed on one side of the control sleeve, the clamping spring is connected with the clamping block, and the clamping groove is connected with the clamping sleeve. The clamping block is arranged on the outer side of the clamping rail in a sliding mode through the clamping groove, the clamping sleeve is connected with the fixing pipe through threads, and the fixing block is installed on the outer side of the fixing pipe, and the three technical problems that natural drying efficiency is low, the hot air speed adjusting capacity is insufficient, and the stability of an air speed adjusting structure is poor are solved.

A metal center plate and a USB socket with positive and negative insertion, the metal center plate comprises a plate body extending in the front-rear direction, a buckle part protruding from the lateral side of the front end of the plate body, and a reinforcing arm connected to the rear end of the plate body and extending in the lateral direction, the reinforcing arm exceeds the outer edge of the buckle part towards the lateral side. The metal center plate of the application can effectively simplify the manufacturing process and reduce the cost.