461 results about "Keyhole" patented technology

The present invention discloses an axial tolerance compensation arrangement 1 for the automatic compensation of tolerances between a first component A and a second component B, which has the following features: a nut element 10, preferably an annular nut element, with a radially outer fastening structure, in particular a bayonet structure, which can be fastened in a component opening 90, in particular a keyhole geometry, of the first component A, and an internal nut thread 22 of a first thread direction, a hollow screw 40 with a head 44 and a hollow cylindrical shank 42, which has on a radial outer side an adjusting thread 52 matching the nut thread 22 and on a radial inner side a fastening thread 56 with a second thread direction opposite to the first, which interacts with a fastening screw 80 of a second thread direction,so that the first component A and the second component B can be fastened to each other via the tolerance compensation arrangement 1, wherein the hollow cylindrical shaft 42 has a disassembly protection 60 at an axial end facing away from the head, which prevents the hollow screw 40 from being unscrewed from the nut element 10 during installation of the tolerance compensation arrangement 1.

A clipping system includes an adapter, a clip and an extending member. The adapter mounted over an insertion device. The clip mounted over the adapter and includes first and second jaws connected to one another such that the jaws are movable between an insertion configuration and an initial deployed configuration. The first jaw includes a keyhole opening. The member coupled to the clip and adapter. The member includes a distal end releasably engaging the opening. The distal end has a width smaller than a width of a first portion of the opening and larger than a second portion of the opening so that, when a portion of the member proximal of the distal end is received within the second portion, the adapter is released from the clip while the member remains coupled to the clip. The member forces the clip open as the clip retracts over the adapter.

The utility model discloses a suspension bead lock cylinder, and relates to the technical field of lock cylinders. The key comprises a lock shell, two lock liners, a key body, a plurality of main marble mechanisms, a group of auxiliary marble mechanisms and two suspension blocks, key holes are formed in the lock liners, a plurality of main through openings communicated with the key holes are linearly formed in the circumferential side faces of the lock liners, the key body comprises a key body and a key handle, and key flower parts are arranged on the upper surface and the lower surface of the key body. A set of auxiliary through openings are formed in the lock cylinder, a Y-shaped structure is formed between the two auxiliary through openings and the main through opening, and the auxiliary through openings face the axis of the lock cylinder. Through the design of the auxiliary marble mechanism and the suspension block on the key, the number of knurling matching points can be increased, meanwhile, the auxiliary marble mechanism and the main marble mechanism are different in direction, so that different angles of the knurling matching points can be increased, the anti-theft capacity of the lock cylinder can be greatly improved, the auxiliary marble mechanism cannot interfere with the lock shell, and the anti-theft effect is good. And processing, production and assembly are facilitated.

A fastening arrangement for connecting a façade panel and a panel holder is provided. The façade panel is a panel with a homogeneous structure; with a front side, a material layer and a rear side. A keyhole-shaped groove is provided on the rear side of the facade panel having a widened insertion opening and a retaining area with an undercut in the material layer. The mechanical connection between the facade panel and the panel holder is a riveted connection using a rivet with a mushroom-shaped head inserted through the insertion opening and into the undercut of the retaining area. The panel holder is pushed onto a free end of the rivet shank that extends out via a through-opening so that the panel holder rests on the cover panel. The rivet shank free end is then formed by a rivet setting tool to create a positive fit between the composite panel and the panel holder.

A U-lock structure comprising a lock body, a U-lock rod, and two end caps, wherein the U-lock rod is inserted into the lock body and the two end caps are fitted onto the left and right ends of the lock body, respectively. The lock body includes a lock seat fitted within a sleeve assembly, a lock core installed at one end of the lock seat and connected to the lock seat via an actuating member, the lock core having a keyhole for inserting a key, whereby rotation of the lock core causes the lock seat to rotate back and forth to form a locked or unlocked state. Wherein the two end caps are used to seal the left and right ends of the sleeve assembly, preventing dust or particles from entering the sleeve assembly or the lock seat, thereby avoiding situations where locking or unlocking cannot be performed.

The application provides a one-time forming electron beam welding method for a titanium alloy component with single-sided incidence and double-layer welds, which comprises the following steps: a closed cavity structure titanium alloy component is formed by a plurality of mutually shielded multi-layer thin plates through single-direction electron beam incidence; the focusing current of the electron beam is adjusted; the converging effect of the electromagnetic coil is changed to change the focus position, and then the electron beam keyhole depth and size are changed; the keyhole is adjusted to be an energy channel through which the electron beam passes; the electron beam energy can pass through the first layer of welds to reach the second layer of welds; the controllable linear energy is provided by combining the acceleration voltage, the welding current and the welding speed to ensure that the remaining energy that penetrates reaches the second layer of welds to complete the welding of the second layer of welds again; the low-frequency scanning is combined with the electron beam movement to drive the first layer of molten pool metal to flow and fill the rear channel, and the front channel is opened, so that the channel is dynamically smooth and stable, and the electron beam keyhole effect behavior is adjusted.

A removable fixture may include a cover assembly, comprising a cover having a top surface which is generally planar and substantially void of any features formed thereon, one or more first alignment features mechanically coupled to a side of the cover, and a wing. The wing may have one or more keyholes configured to mechanically engage with one or more corresponding coupling structures on a physical object and one or more second alignment features configured to mechanically engage with the one or more first alignment features in order to, when the one or more first alignment features are mechanically engaged with the one or more second alignment features, constrain translation of the cover relative to the physical object to a linear translation.

The utility model discloses a manual unlocking device capable of being attached to an electric control lock. A fixing base is composed of a horizontal plate and a vertical downward plate. The cam fixing seat and the lock body are arranged on the rear bottom surface and the front bottom surface of a horizontal plate of the fixing seat respectively, and the cam is structurally characterized in that an arc-shaped raised head used for triggering a manual opening contact of the electric control lock is fixedly connected to a cylinder and forms a key hole matched with a key together with the front part of the cylinder; the rear and front cylinders of the cam are movably erected between the hole of the cam fixing seat and the hole of the rear part of the lock body respectively; a reset spring is arranged at the rear part of the cam; and the electric control lock is mounted on the inner surface of a vertical downward plate of the fixed seat. The manual unlocking device is specially used for manually unlocking the electronic control lock of the dosing door and / or the access door of the unit medicine cabinet, has the characteristics of compact structure, convenience and quickness in unlocking the electronic control lock and the like, and overcomes the defect that the electronic control lock is forced to be unlocked violently due to faults of the electronic control lock.

The invention provides a combined laser welding method and device.The method comprises the following steps that linear structured light is adopted to scan a welding seam area of a welding workpiece in the welding path direction, and morphological characteristics of the welding seam area are obtained; determining welding process parameters of the combined laser welding device according to the morphological characteristics and the material characteristics of the welding workpiece; the combined laser welding assembly is driven to move along the welding path, the welding seam area is welded, characteristic parameters of small laser holes in the welding seam area are monitored in real time, and in the continuous laser welding process, if the characteristic parameters exceed a preset range, pulse laser is switched to conduct welding on the welding seam area; and in the continuous laser welding process, if the characteristic parameters exceed the preset range, continuous laser is switched to conduct welding on the welding seam area. The problem that thermal stress is not uniform when different materials are welded can be effectively solved, the uniformity and strength of a welding area are guaranteed, high-precision welding of structural parts in complex shapes is achieved, and the welding precision and consistency are guaranteed.

The intelligent door lock comprises an intelligent door lock body and a doorbell key panel assembly, the intelligent door lock body is provided with a setting space, a doorbell key and a lock cylinder key hole are arranged in the setting space, and the doorbell key panel assembly is buckled on the setting space. The doorbell button panel assembly can shield the doorbell button and the lock cylinder key hole. According to the intelligent door lock, the doorbell key and the lock cylinder key hole can be integrated in one setting space, and under normal conditions, the doorbell key panel assembly can hide the lock cylinder key hole; when mechanical unlocking is needed, the doorbell key panel assembly can be detached to expose the lock cylinder key hole, and mechanical unlocking can be achieved by inserting a key into the lock cylinder key hole. Compared with the prior art, the intelligent door lock disclosed by the utility model has the advantages that the space of the intelligent door lock panel can be effectively saved, so that the tidiness and rationality of the layout of the intelligent door lock panel are further improved.

The utility model relates to a flip type dustproof cover of a lock, which aims at solving the technical problems that the dustproof cover of the existing similar product is poor in structural design, poor in positioning effect and easy to break after being opened, poor in buckling and fixing effect and waterproof after being closed, and poor in applied handle plane lock structure. A main body of the dustproof cover is a cover body, and the dustproof cover is characterized in that a shaft edge at one end of the cover body is hinged and fixed to bosses symmetrically arranged at the two ends of a base at a lock body through pins, the bosses are hinged seats of the lock body, the bosses are square, and when the cover body is opened to be slightly larger than 90 degrees, the cover body abuts against the tops of the bosses of the base in a limited mode; a clamp spring is arranged at the bottom of the other symmetrical end of the cover body on one side of the base, a raised fixing buckle is arranged on the base corresponding to the clamp spring, and a waterproof gasket is arranged in a groove in the middle of the bottom of the cover body on one side of the base; and when the snap spring of the cover body and the fixing buckle of the base are covered and buckled and fixed, the groove of the cover body and the waterproof gasket in the groove are aligned and sealed with the lock cylinder and the key hole which are bulged on the plane of the base.

The utility model discloses an access door lock for rail transit, which comprises a lock body, a cab side panel and a passenger room side panel, the lock body comprises a lock box with a groove, a lock body panel is arranged on the right side end face of the lock box, an inclined spring bolt and a dead spring bolt are arranged in the groove, an inclined spring bolt shifting shaft sleeved with an inclined spring bolt shifting fork is in contact connection with the lower portion of the inclined spring bolt, and the dead spring bolt shifting fork is sleeved with a dead spring bolt shifting fork. The other end of the inclined spring bolt shifting shaft is connected with the push rod, the other end of the push rod is in contact connection with the dead spring bolt shifting shaft, the other end of the dead spring bolt shifting shaft is in contact connection with the dead spring bolt, the cab side panel and the passenger room side panel are arranged on the two sides of the lock body, and the cab side panel, the passenger room side panel and the lock body are fixed together through bolts. A handle and a knob are arranged on the cab side panel, and a key hole is formed in the passenger room side panel. The door lock is compact in overall structure, reasonable in structural design and capable of being well matched with a door lock of an access door in the traffic rail industry.

This product is a key material used to lock and unlock a cylinder lock. As shown in the reference diagram, this product has an insertion part that is inserted into the keyhole of the cylinder lock and a grip part that is held by the user. This product is used to lock and unlock a cylinder lock with a predetermined number of recesses formed on the surface of the insertion part.

A method for joining metallic workpieces (12, 14, 150), the method comprising: a workpiece stack (10) is provided having three metal workpieces (12, 14, 150) overlapping to define a welding area (16), wherein the welding area (16) of the workpiece stack (10) has a top surface (20) and a bottom surface (22) and further establishes a butt interface (34) between each pair of adjacent metal workpieces (12, 14, 150) included in the workpiece stack (10), and wherein all of the metal workpieces in the workpiece stack (10) are magnesium workpieces; an optical scanning laser head (42) of a remote laser welding device (18) is operated to direct a first laser beam (24') onto the upper surface (20) of the workpiece stack (10) and additionally to move a beam spot (44) of the first laser beam (24') relative to the upper surface (20) of the workpiece stack (10) within the welding area (16) and along a linear beam path pattern (80) to form a keyhole (70) and to displace a surrounding molten metal weld pool (68) along a corresponding path within the workpiece stack (10), wherein a single translation of the keyhole (70) and the surrounding molten metal weld pool (68) creates a linear laser seam weld joint (66) extending into the workpiece stack (10) and intersecting each butt interface (34) formed between the top and bottom surfaces (22) of the workpiece stack (10) to weld the three metallic workpieces (12, 14, 150) together, the laser seam weld joint (66) having an initial top surface (76) adjacent the top surface (20) of the workpiece stack (10); the scanning optical laser head (42) of the remote laser welding device (18) is operated to impinge on the initial upper surface (76) of the laser seam weld joint (66) with a second laser beam (24") and additionally to move the second laser beam (24") sinusoidally along the initial upper surface (76) of the linear laser seam weld joint (66) to melt an upper portion of the laser seam weld joint (66) including the initial upper surface (76) of the laser seam weld joint (66), wherein the upper portion melted by the second laser beam (24") constitutes between 10 vol.% and 30 vol.% of the laser seam weld joint (66); and the second laser beam (24") is removed from the laser seam weld joint (66) to allow the upper portion of the laser seam weld joint (66) to resolidify and to provide the laser seam weld joint (66) with a modified upper surface (84) that is smoother than the initial upper surface (76) of the laser seam weld joint (66) wherein the first laser beam (24') is a solid-state laser beam, wherein the first laser beam (24') is moved relative to the upper surface (20) of the workpiece stack (10) along the beam travel pattern (80) at a travel speed ranging from 2 m / min to 50 m / min, while a power level of the first laser beam (24') ranges from 2 kW to 6 kW and a focus position of the first laser beam (24') ranges from +10 mm above the upper surface (20) of the workpiece stack (10) to -10 mm below the upper surface (20) of the workpiece stack (10); and wherein the second laser beam (24") is a solid-state laser beam, wherein the second laser beam (24") is moved along the initial upper surface (76) of the laser seam weld joint (66) at a travel speed ranging from 50 m / min to 130 m / min, while a power level of the second laser beam (24") ranges from 1 kW to 3 kW and a focus position of the second laser beam (24") ranges from 0 mm to -50 mm below the upper surface (20) of the workpiece stack (10).

The utility model provides a locking mechanism which is characterized in that a key body is embedded in a protective sleeve, and a plurality of first ejector rods are arranged in the protective sleeve; the locking assembly comprises a lock body with a key hole and a protective cover arranged on the key hole in a sleeving mode, the protective cover comprises a cover plate with a through groove, a plurality of second ejector rods and a limiting ring, and a plurality of limiting grooves are evenly distributed in the cover plate along the circumferential side of the cover plate; each second ejector rod in the plurality of second ejector rods is configured to extend into each limiting groove in the plurality of limiting grooves in a one-to-one correspondence manner, and the lower end of each second ejector rod is connected with the limiting ring; and each first ejector rod in the plurality of first ejector rods can downwards eject each second ejector rod in a one-to-one correspondence manner, so that the angle of the through groove is adjusted, and the key body can extend into the key hole. According to the locking mechanism, the problem that an existing locking mechanism is not favorable for being used in a severe environment due to the fact that long-time protection on the key body and the key hole is difficult to guarantee can be solved.

The invention provides an electronic lock, which relates to the technical field of electronic locksets and comprises a lock body, a flexible lock beam, a spring bolt, a jacking device and a wireless controller, one end of the flexible lock beam is fixed to the lock body, and the other end is provided with a lock head assembly capable of being inserted into a lock body lock hole. The jacking device comprises a jacking rod and a pinch bar; the pinch bar can drive the jacking rod to extend out of the lock body and is positioned between the fixed end of the flexible lock beam and the lock hole; the spring bolt is movably arranged in the lock body and can be selectively connected with the lock head assembly and the ejector rod in a clamped mode, and double locking is achieved. The wireless controller drives the lock tongue after receiving the wireless signal, so that the lock tongue is separated from the lock head assembly and the ejector rod at the same time, and unlocking is achieved. The flexible lock beam, the lock tongue and the jacking device are combined, so that the locking process is firmer, the device can adapt to canvas bag openings with different calibers, wireless remote control unlocking is combined, the problems that a traditional mode is tedious in operation and low in efficiency are solved, the device is particularly suitable for automatic locking and unlocking of flexible packages such as canvas bags, and the logistics efficiency and reliability are effectively improved.

The utility model discloses a lock hole structure, the lock hole structure is applied to an intelligent door lock, the intelligent door lock comprises a panel module, a locking mechanism and an emergency power supply module, and the lock hole structure comprises a base and a cover plate assembly; wherein the base is installed in an installation groove of the panel module, a storage groove is formed in the side, facing a groove opening of the installation groove, of the base, the locking mechanism and the emergency power supply module are both installed on the side, away from the groove opening of the installation groove, of the base and are partially exposed out of the storage groove, and the cover plate assembly is connected with the base so as to cover the installation groove while covering the storage groove. The lockhole structure is also provided with a placing part which is used for movably placing a power supply interface of the emergency power supply module. According to the technical scheme, the locking mechanism and the emergency power supply module can be installed in a hidden mode at the same time through the lock hole structure, then the overall structure of the panel module is simplified, the assembling difficulty of the intelligent door lock is reduced, and the assembling efficiency of the intelligent door lock is improved.

The utility model discloses a rail transit platform door isolation device, including and the mechanical isolation lock of lintel connection, and the isolation support of door leaf connection, mechanical isolation lock includes lock core, lock tongue, lock core front end connection lock tongue, and the keyhole that is equipped with for professional key access is equipped in the back, and lock core and lintel rotation is connected, forms mechanical isolation, and lock core drives lock tongue to rotate, and the clearance between door leaf is reduced, and the isolation support is prevented to cross lock tongue. Through setting lock core structure, prevent misoperation, and lock core drive lock tongue movement, prevent sliding door to slide, and sliding door can not open, on the basis of electric isolation, increase a safeguard, guarantee security.

This utility model discloses a car door lock structure and a car, including: an outer door panel with a lock hole; a door lock disposed inside the outer door panel; a lock cylinder assembly including a lock cylinder mounting base and a lock cylinder, the lock cylinder mounting base being disposed on the inner side of the outer door panel, the lock cylinder corresponding to the lock hole being disposed on the lock cylinder mounting base, the lock cylinder including a lock cylinder shell and a core body, the core body having a keyhole, the lock cylinder shell being pressably disposed on the lock cylinder mounting base, the lock cylinder mounting base having an unlocking switch that directly or indirectly cooperates with the lock cylinder shell, the unlocking switch being connected to the door lock for electronic unlocking; and a lock rod, one end of the lock rod being connected to the core body, the other end of the lock rod being connected to the door lock, the lock rod being able to rotate with the core body for mechanical unlocking. This utility model can be used for car door locks without door handles, and it is equipped with a double door opening switch, which can be used for both electronic unlocking and mechanical lock cylinder emergency unlocking. This utility model solves the problem that car door locks without door handles cannot be unlocked after a power failure, effectively improving system stability.

The anti-jamming lock cylinder comprises a lock shell, a lock container installed in the lock shell and a tail ruler assembly connected into the lock shell, a clutch assembly enabling the lock container to be separated from or combined with the tail ruler assembly is arranged between the lock container and the tail ruler assembly, and a key hole is formed in the lock container; when the key is not inserted into the key hole, the tail ruler assembly is separated from the clutch assembly and the lock cylinder; after the key is inserted into the key hole and gradually pushes the clutch assembly to enter the tail ruler assembly, the key is rotated, the lock container, the clutch assembly and the tail ruler assembly can coaxially and synchronously rotate, and the clutch assembly is in circumferential limiting fit with the lock container and the tail ruler assembly through a circumferential limiting structure. Due to the effect of the clutch assembly, the tail ruler assembly and the lock cylinder are in a separated state, even if foreign matter invades the key hole and blocks the key hole, the tail ruler assembly can still idle, motor burning or part damage caused by the foreign matter of a traditional lock cylinder is effectively avoided, and meanwhile the problem that indoor unlocking cannot be achieved due to the fact that a user forgets to pull out a key is solved.

The invention discloses a Ta-10W alloy hybrid welding method for optical fiber laser focus rotation along with welding laser shock, and belongs to the technical field of welding. In the Ta-10W laser welding process, the laser focus rotation and laser shock composite technology is adopted, and the comprehensive beneficial effects of pore inhibition and penetration depth increase are achieved through the synergistic effect of the laser focus rotation and laser shock composite technology. According to the specific design, a focus rotating fiber laser and nanosecond high-energy pulse laser paraxial composite method is adopted, the distance between an impact laser spot and a welding spot is adjusted, the vibration regulation and control effect of impact waves generated by pulse laser on a keyhole and a molten pool is utilized, collapse of the rear wall of the keyhole is restrained, bubble escape is promoted, the pore size is reduced, and the porosity is reduced; and the influence effect of laser focus spin welding on welding seam depth reduction is reduced.

The invention provides a rotating shaft balance structure based on topological optimization, the rotating shaft balance structure comprises an inner ring, measuring beams and an outer ring, the inner ring is provided with a key hole, and the inner ring and the outer ring are connected through a plurality of groups of measuring beams; a strain gauge is attached to the measuring beam and can sense deformation of the measuring beam, and six-component aerodynamic force borne by a measured object is converted into an electric signal to be output. The outer ring is of a hollow structure composed of beams with irregular surfaces and holes, and a plurality of mounting holes used for being connected with a tested device are formed in the outer ring in the circumferential direction. A topological optimization design is adopted for the outer ring of the rotating shaft balance to form a hollow structure consisting of beams and holes with irregular surfaces, so that the rotating shaft balance greatly reduces the mass of the outer ring while ensuring the design rigidity, and solves the problem that the resistance measurement error is relatively large due to rigidity hardening of a measurement beam caused by centrifugal force during high-speed rotation.

The utility model relates to the technical field of energy storage, in particular to a simple lock, a bottom support, a battery box and a battery changing system. The simple lock comprises a lock hole assembly and a lock body assembly. The lock body assembly comprises a supporting unit, a driving unit and two spring bolt units. The driving unit comprises a driving rod, a first left connecting rod, a second left connecting rod and a spring bolt unit which are hinged in sequence; and the driving rod, the first right connecting rod, the second right connecting rod and the other spring bolt unit are hinged in sequence. The driving rod drives the spring bolt unit to rotate through the connecting rod structure. When the simple lock is in a locking state, the spring bolt unit penetrates through the lock hole assembly, and the spring bolt unit abuts against the lock hole assembly to limit the lock hole assembly to move away from the spring bolt unit. The bottom support comprises a lock body assembly or a lock hole assembly. The battery box comprises a lock body assembly or a lock hole assembly. The battery replacing system comprises a bottom support and a battery box. Therefore, the problems of complex structure and high energy consumption of the traditional battery replacement locking device are solved.

This utility model provides an anti-side-knock lock and a lock kit. The anti-side-knock lock includes a lock body, a bolt, a lock cylinder assembly, a first reset member, a pin, and a second reset member. The lock cylinder assembly includes a rotor with an eccentric portion. The bolt has a locking position, and the first reset member cooperates with the bolt. Under the restoring force of the first reset member, the bolt tends to move towards a first position. The eccentric portion cooperates with the locking position, and the rotor rotation forces the bolt to move towards a second position. The bolt has a pin hole, and the second reset member and the pin are located in the pin hole. The pin restricts the movement of the bolt. The pusher includes a central post and a pusher. The lock cylinder assembly has a sliding hole along a first direction and located at the first axis, which connects to the keyhole. The central post is located in the sliding hole. The pusher, the pin, and the second reset member abut against the bolt in sequence. When the central post is pushed, the pin disengages from the lock body. The lock kit includes a lock and a key. This utility model reduces manufacturing difficulty and is applicable to lock types with a central keyhole.

The invention discloses a lock for a multi-panel door. The lock includes a keyhole portion configured to be mounted to the first panel, and the keyhole portion having a receiving portion. The latch portion is configured to be mounted to the second panel, and the latch portion has a bolt selectively movable between an unlocked position away from the receiving portion and a locked position positioned in the receiving portion. A hinge pivotally connects the keyhole portion and the latch portion. The keyhole portion and the latch portion are selectively movable about the hinge to enable relative pivotal movement between the first panel and the second panel.

A lock (10) suitable for different slots for electronic devices, which is used to lock an electronic device (20) and is unlocked with a key (30), characterized in that the lock (10) for electronic devices has a housing (11) which is composed of two housing units (111), wherein the housing (11) is externally connected to a safety cable (12) to fix the lock (10) in a location, wherein a first receiving chamber (13) and a second receiving chamber (14) are arranged inside the housing (11), wherein a first separating part (131) projects from the bottom of the first receiving chamber (13) and a second separating part (141) projects from the upper part of the second receiving chamber (14), wherein a keyhole (142) is arranged on the second receiving chamber (14) which passes through the bottom of the second receiving chamber (14).wherein a third receiving chamber (15) is arranged between the first separating part (13) and the second separating part (14), in which a slide (151) is arranged through which a through-opening (1511) passes, wherein a first spring (152) is arranged between the slide (151) and the housing (11), wherein a locking element (16) is rotatably mounted next to the first receiving chamber (13), on which at least one sawtooth-shaped first locking edge (152) is projecting, wherein a second spring (162) is arranged between the locking element (16) and the housing (11), wherein a locking cylinder (17) is attached in the second receiving chamber (14), in the center of which a cylinder shaft (171) is rotatably mounted, wherein a flange (711) is arranged in the middle section of the cylinder shaft (171) such that it projects outwards, wherein the middle section of the cylinder shaft (171) passes through the through-opening (1511) is inserted through it,that the flange (1711) is located in the through-opening (1511), wherein a locking element (18) is arranged in the first receiving chamber (13) and is fitted over the locking cylinder (17), wherein a plurality of sawtooth-shaped second locking edges (181) are arranged projecting on the surface of the locking element (18), wherein a third spring (182) is arranged between the locking element (18) and the first separating element (131), wherein in the state in which the first locking edge (161) and the second locking edge (181) are engaged, the locking element (18) can only move downwards relative to each other, wherein by moving the locking element (18) downwards the first locking edge (161) and the second locking edge (181) temporarily disengage, wherein by moving the locking element (18) upwards the engagement structure of the first locking edge (161) and the second locking edge (181) causes a blocking action,wherein a locking head housing (19) is placed on top of the locking part (18) and connected to it, wherein two locking units (191) are rotatably mounted in the locking head housing (19), wherein by moving the locking part (18) downwards the cylinder shaft (171) is pressed in between the two locking units (191) so that the two locking units (191) are pushed apart, wherein a clamping jaw (1911) is arranged at the front end of each locking unit (191) and is designed such that it projects outwards; that the electronic device (20) is provided with a slot (21), wherein by inserting the locking units (191) into the slot (21) the locking units (191) push down the locking part (18) so that the first locking edge (161) and the second locking edges (181) slide relative to each other and engage each other, thereby bringing the locking part (18) into a lower position,thereby increasing the distance between the two locking units (19) so that the two locking units (19) engage in the slot (21), the clamping jaws (1911) now supporting themselves on the inside of the slot (21) so that the lock (10) for electronic devices cannot be pulled out, wherein, by causing the first locking edge (161) and the second locking edge (181) to slide and engage further, the locking part (18) is moved further into a lower position to increase the distance between the two locking units (191); and that the key (30) can be inserted into the keyhole (142) and then rotate the cylinder shaft (171), whereby the flange (151), when the cylinder shaft (171) is rotated 90 degrees, is caused to push the slide (151) to push the locking element (16), thereby disengaging the first locking edge (161) and the second locking edge (181),wherein the locking part (18) rebounds under the influence of the third spring (182), so that the cylindrical shaft (171) located between the two locking units (191) is pulled out, thereby reducing the distance between the two locking units (191) and the two locking units (191) disengage from the slot (21).

The utility model discloses an epaulet convenient to take off and wear quickly. Comprising an epaulet body, and a bottom loop is sewn at one end of the length direction of the back of the epaulet body; a female buckle is installed at the other end of the epaulet body in the length direction of the epaulet, and a male buckle corresponding to the female buckle is installed on the bottom loop. The utility model has the advantages of simple manufacture, easy opening and closing, convenient and fast wearing, time and labor saving, no need of keyhole and the like.

The application discloses an electronic door lock, which comprises a shell assembly, a protection piece, an alarm module, a sensing module and a control module, the shell assembly is provided with a charging hole and a key hole, the protection piece is movably arranged on the shell assembly, and the protection piece is used for opening and closing the charging hole and the key hole; the alarm module is arranged on the shell assembly; the sensing module is arranged on the shell assembly and can generate a sensing signal when the protection piece opens the charging hole or the key hole; and the control module is arranged on the shell assembly and electrically connected with the alarm module and the sensing module respectively, so that the control module can control the alarm module to work according to the sensing signal, the alarm module can work when the protection piece opens the charging hole and the key hole, an alarm signal is sent to prompt a user, the user can determine that the charging hole or the key hole is opened according to the alarm signal, and the use safety of the electronic door lock is improved.

The utility model provides a hidden breathable shell and an electronic device with the same, the breathable shell comprises a shell body, and a shell body inner cavity is formed in the shell body; the key hole is formed in the appearance surface of the shell, the key hole is used for arranging a key assembly, and a ventilation gap for introducing air is defined between the key assembly and the inner wall of the key hole; and one end of the ventilation channel is communicated with the inner cavity of the shell, and the other end is communicated with the ventilation gap of the key hole. According to the hidden breathable shell, air pressure inside and outside an electronic product can be balanced through the structure arranged in the inner cavity of the hidden breathable shell, and the situation that the air pressure inside the product is too large or too small due to temperature difference or extrusion of the product is prevented.

In one example, the disclosure relates to adjustable flip up sight assembly that can be adjusted vertically and laterally in particular, for an automatic firearm, comprising a front sight support element that is supported by an axle on a mount, in particular such that they can pivot thereon, wherein the front sight support element has an adjustment element supported on a spring element and releasably connected to a front sight, which contains a keyhole type opening through which the axle is inserted, wherein the adjustment element can be moved in relation to the axle against the spring force between two positions inside the front sight support element such that the keyhole opening prevents a lateral movement of the front sight support element along the axle when engaged with the axle, and allows the lateral adjustment of the front sight support element in a released position.