45results about How to "Quick snap-on" patented technology

The utility model discloses a suspension type grinding machine electric leakage protection device which comprises a clamping structure, an installation structure and an electric leakage protector body, the electric leakage protector body is arranged on the installation structure, the installation structure comprises a movable plate, the electric leakage protector body is matched with a clamping rail on the movable plate in a clamping mode, and the movable plate is provided with a clamping groove. A fixed plate is arranged on one side of the movable plate, the fixed plate is connected with the clamping structure, the clamping structure comprises a connecting strip, the connecting strip is connected with the fixed plate, two clamping blocks are arranged in a sliding groove formed in the connecting strip in a sliding mode, a positive and negative tooth screw rod is arranged in the sliding groove, and the two clamping blocks are connected with the movable plate. One end of the positive and negative tooth screw rod is connected with the connecting strip through a rotating shaft, the other end, penetrating through the connecting strip, of the positive and negative tooth screw rod is provided with a rotating handle, and the insertion ends of the two clamping blocks are in threaded connection with the two threaded sections of the positive and negative tooth screw rod respectively. According to the utility model, the leakage protector body can be rapidly clamped at the switch, and the leakage protector body can be rapidly installed.

The application provides a door and window with a guard grid, comprising: a door and window body; a connecting frame is fixedly installed on the top and bottom of the door and window body; a trapezoidal groove is formed on the top and bottom of the rear side of the door and window body; a plurality of guard grid bodies are slidably connected to the inner cavity of the door and window body; a trapezoidal block is fixedly installed on the top and bottom of the front side of the guard grid body; the trapezoidal block is slidably connected to the door and window body through the guard grid body; and a protective shell is fixedly installed on the front side of the door and window body. Through the design of the assembly, the worm and the worm gear are driven by rotating the rotating disc, the toothed plate moves the limiting rod, the single set of guard grid bodies can be quickly clamped or loosened, the efficiency is improved compared with the traditional mode, the trapezoidal block and the trapezoidal groove are slidably matched, the guard grid body can be quickly plugged in and pulled out along the door and window body, one person can operate, the guard grid body can be freely increased or decreased along the vertical direction of the door and window body, and different protection requirements, such as child protection and theft prevention, can be met.

The utility model provides a hollow glass door body and a refrigerator. The hollow glass door body comprises a door frame and hollow glass, the hollow glass comprises inner glass and outer glass, and the door frame comprises a door body frame arranged on the periphery of the hollow glass and arranged in an L shape; the door body inner frame is connected between the door body frame and the hollow glass, the two ends of the door body inner frame are connected with the two ends of the door body frame in a clamped mode to form a containing space filled with a foaming agent, and the door body outer frame is connected with the door body inner frame in a buckled mode to define a mounting groove used for mounting the hollow glass. In the utility model, the door body inner frame and the door body outer frame simultaneously buckle and press the hollow glass to achieve a stable state. The foaming agent is filled between the door body frame and the door body inner frame, so that condensation of the door body frame is effectively reduced. Meanwhile, the foaming agent is not in contact with the hollow glass, different types of hollow glass can be replaced according to different use environments so as to meet specific use requirements, and higher compatibility is achieved.

The utility model discloses a kind of metal vertical pole assembling frame, it is related to bookshelf technical field, including plank and metal vertical pole, the plank and metal vertical pole are all provided with several, several The plank is equidistantly arranged distribution in vertical direction.This utility model inserts the multiple metal vertical pole below clamping post into the multiple upper clamping barrel inside of the lowermost plank respectively in assembling process, completes the positioning of multiple metal vertical pole, then the lower clamping barrel on another plank is aimed at the clamping post above metal vertical pole, another plank is clamped in the upper of multiple metal vertical pole, and then the placement of another plank is completed, and so on, the assembling of multiple planks is quickly completed, and then the assembling of entire metal vertical pole bookshelf is quickly completed, solve the connection structure between metal vertical pole and plank in the assembling process of existing metal vertical pole bookshelf, and the dismounting operation between metal vertical pole and plank is not convenient, and the problem of lower flexibility.

The utility model relates to the technical field of liquid cooling transmission, and discloses a corrugated hose special for liquid cooling. Comprising a first corrugated pipe and a second corrugated pipe, the top end of the first corrugated pipe is connected with the surface of the second corrugated pipe in a clamped mode, a connecting mechanism is arranged at the contact end of the first corrugated pipe and the second corrugated pipe, and the connecting mechanism comprises a connecting block fixedly connected to the surface of the first corrugated pipe. A clamping and pressing structure is designed on the inner conical surface of the first corrugated pipe, a conical surface connector is designed to have the taper of 5 degrees and is matched with a butt joint rod, radial shrinkage is generated during pressing, and metal-rubber dual sealing is achieved in cooperation with a shrinkage clamping ring. When the poke rod is pressed, the spring lock catch below the conical surface connector is connected with a clamping hole formed in the second corrugated pipe in a clamping mode, and rapid clamping is achieved. And when disassembly is needed, clamping between the spring lock catch and the clamping hole can be canceled only by pressing the poke rod again, so that quick disassembly is achieved, and meanwhile, the spring lock catch supports the IP protection level and can be suitable for more use scenes.

According to the multi-layer screening device convenient to clean, a box body is communicated with a plurality of discharging boxes, a filtering assembly and a mounting frame are arranged on one side of the box body, the filtering assembly conducts grading screening through a plurality of filtering plates with filtering holes from large to small, and the plate body and a connecting frame can be rapidly connected in a clamped mode. And the disassembly and assembly efficiency is obviously improved. The material flowability is enhanced by arranging the vibration motor, meanwhile, the detachable connection structural design is combined, overall extraction and synchronous cleaning of the filtering assembly are achieved, the tedious step that sieve plates are detached one by one in a traditional device is avoided, and the labor cost is saved.

This utility model discloses a self-adhesive material that reduces scratches, comprising a self-adhesive body. The self-adhesive body includes a face material layer, a first adhesive, and a first release paper. The first adhesive is disposed below the face material layer and adhered to the first release paper. A transparent film is adhered to the face material layer, and a second adhesive is disposed on both sides of the bottom of the transparent film. By using the second adhesive, this utility model can fix the transparent film, so that the transparent film can fully cover the face material layer of the self-adhesive body, effectively preventing external forces from directly contacting the self-adhesive body, thereby effectively reducing the generation of scratches, greatly improving the aesthetics of the self-adhesive body, avoiding damage to the patterns or text on the surface of the face material layer of the self-adhesive body, and the transparent film is directly adhered to the adhesive surface, making it convenient to quickly remove the transparent film if it is damaged in the future, without damaging the self-adhesive body.

This utility model discloses a support frame assembly for orthopedic joint surgery, including a base, a hook connected to one side of the base, a support column above the base, a support platform above the support column, support baffles on both sides of the support platform, a fixed bracket fixedly mounted on one side of the upper part of the support platform, a fixed plate connected to the fixed bracket, a rotating shaft on the other side of the upper part of the support platform, both ends of the rotating shaft connected to the support baffles, a flipping bracket rotatably mounted on the rotating shaft, a flipping plate connected to the flipping bracket, and a rotation drive component on the support platform to drive the flipping bracket to flip. This design, with its fixed plate and flipping plate, works together to adapt to different limb shapes and positioning needs of patients, facilitating intraoperative positioning and adjustment of the limbs.

The utility model discloses a range finder for building engineering supervision relates to building engineering surveying technical field, including support pole, adjusting lever and organism, adjusting lever sets up in the inside of support pole, and upper end extends out support pole, and with support pole swing joint, organism sets up in adjusting lever upper end. The utility model discloses through setting up support pole, adjusting lever, organism, quick fixing device, butt -joint cylinder, baffle ring, self -locking assembly, controlling piece, butt -joint piece, rubber antiskid pad, spacing sliding slot and spacing slide's cooperation and use, have improved or solved the RTK measuring instrument of existing to a certain extent when installing and connecting with its adjusting lever is more troublesome, needs repeatedly rotating, installs and connects through the cooperation of screw thread, this not only time -consuming, influences its installation and subsequent disassembly and storage's work efficiency, and long -term screwing or screwing skewing over force, also easy to cause the problem of silk damage equipment.

The utility model relates to the technical field of instrument shells, and discloses an electric vehicle instrument shell which comprises a transparent instrument shell body, a fixing frame and an instrument mainboard, an adjusting mechanism is arranged on the transparent instrument shell body, an auxiliary mechanism is arranged on the transparent instrument shell body, and the adjusting mechanism comprises a control data line. The control data line is fixedly connected to the inner wall of the rear side of the instrument mainboard, a bidirectional motor is fixedly connected to the inner wall of the left side of the fixing frame, a threaded rod is fixedly connected to the output end of the bidirectional motor through a coupler, a threaded sleeve is in threaded connection to the outer wall of the side face of the threaded rod, and a sliding plate is fixedly connected to the outer wall of the side face of the threaded sleeve. An L-shaped groove is formed in the inner wall of the top of the sliding plate, and a brush frame is connected to the inner wall of the top of the L-shaped groove in a clamped mode. According to the utility model, through the arrangement of the adjusting mechanism, the surface of the transparent shell of the instrument can be automatically cleaned, dust and stains can be effectively removed, the definition of a data display screen is ensured, and the riding safety is improved.

The application discloses a hydraulic separation type detachable centralizer for oil sucker rod and relates to the technical field of centralizers, which comprises a fastening concave frame, a mounting mechanism is arranged in the fastening concave frame, and a stabilizing mechanism is arranged on one side of the mounting mechanism; the mounting mechanism comprises a transmission screw rod, a transmission rod is connected to one end of the transmission screw rod, a servo motor is mounted at one end of the transmission rod, a first threaded ring is arranged outside the transmission screw rod, and a first connecting branch plate is connected to one side of the bottom end of the first threaded ring. The mounting mechanism and the stabilizing mechanism are arranged to quickly extrude and centralize the oil sucker rod, the extrusion fixing does not need bolts, labor is saved, the upper and lower parts are installed together, installation efficiency is higher, installation is faster, operation is simple and easy to use, time and labor are saved, practicality is better, the stability of the bottom of the centralizer is effectively improved, stability is maintained, the centralizing effect is better, and the bottom stability is maintained.

The utility model discloses a countering unmanned aerial vehicle convenient to replace laser interception equipment, which comprises a connecting plate mounted at the bottom of the unmanned aerial vehicle, and the bottom of the connecting plate is fixedly connected with a fixing frame. Through the arrangement of the connecting plate, the fixing frame, the stepping motor, the rotating disc, the hinge frame and the mounting frame, the stepping motor can drive the rotating disc to rotate, so that the mounting frame and the laser intercepting equipment main body can horizontally rotate, and the mounting frame can rotate within a certain angle range by utilizing the hinge frame, so that a target unmanned aerial vehicle can be better aligned; the laser interception equipment body is installed conveniently through the installation opening, the equipment body and the installation frame are rapidly clamped through the installation connector, then the laser interception equipment body can be firmly fixed in the installation frame through cooperation of a positioning groove, a limiting cavity, a positioning bolt and a limiting ring, and the laser interception equipment body is prevented from shaking or falling off in the flying process; and meanwhile, the laser interception equipment main body is convenient to replace.

The invention discloses an auxiliary smoke exhaust device for fire fighting, belongs to the technical field of fire fighting instruments, and solves the problems that an existing device is poor in mounting adaptability, not firm in fixation, single in function and inconvenient in angle adjusting.The auxiliary smoke exhaust device comprises a fixing frame used for being fixed to a door frame or a window, and a sliding seat is slidably mounted on one side of the interior of the fixing frame; according to the auxiliary smoke exhaust device for fire fighting, through the combined structure of the first fixing plate and the second fixing plate, in cooperation with adjustment of the fixing columns and the fixing nuts, the auxiliary smoke exhaust device for fire fighting can be matched with door frames and windows of different sizes, and the auxiliary smoke exhaust device for fire fighting is convenient to use and high in practicability. The conical convex block can increase the friction force in contact with a door frame and a window, the device is prevented from sliding in the operation process, and the fixing effect is better; and meanwhile, a handle is arranged, so that a fixing nut is conveniently and rapidly screwed, rapid disassembly and assembly of the device are achieved, and the fire-fighting operation efficiency is improved.

This invention relates to a portable pipeline valve speed-changing opener / closer, belonging to the technical field of valves. It includes a working box and a fixing device. The working box contains a speed-changing mechanism capable of changing speeds, and the lower end of the working box has a quick-installation mechanism connected to the speed-changing mechanism. This invention can change the rotational speed of the valve switch by changing the speed of the device, thereby improving the efficiency of valve opening and closing. Furthermore, this invention enables quick engagement of the valve switch, ensuring that the valve switch can rotate with the rotating steering wheel at the top of the working box. Simultaneously, this invention can quickly engage steering wheels of different valve sizes, improving the applicability of the device.

The utility model discloses an eccentric fixed galvanized plate cable joint, including the whole is the cylindrical joint casing and the outer ring of the outer joint end of casing, the joint casing adopts high strength galvanized sheet integrated stamping, including the outer joint end for connecting with the terminal box, the inner joint end for fixed cable and the intermediate annular protruding of connecting outer joint end and inner joint end, the outer joint end outer sleeve sets the outer ring, and the inner joint end realizes the eccentric fixed cable of fastening bolt. The utility model discloses through the outer ring buckle and realizes quick clamping with terminal box, replaces traditional screw tightening mode, and can complete installation without special tool, and the inner joint end adopts eccentric fixed design, and realizes the close clamping of cable through unilateral extrusion, and the joint casing adopts high strength galvanized sheet integrated stamping, has excellent corrosion resistance and structural strength.

The utility model belongs to the technical field of integrated suspended ceiling installation, and relates to an assembly type integrated suspended ceiling rapid installation assembly which comprises a main hanging adjusting support, a bearing plate is detachably installed below the main hanging adjusting support, the two ends of the bearing plate are connected with the main hanging adjusting support through auxiliary balance inclined struts, and a main keel is fixedly installed on the bearing plate through a pressing block. The integrated suspended ceiling is provided with a plurality of suspended ceiling keels, and the suspended ceiling keels are fixedly installed on the main keels through suspended ceiling locking pieces. The height is adjusted at any time through the main hanging adjusting support according to the actual condition of the top face of a building, horizontal installation of a suspended ceiling system is ensured, the attractiveness and the using effect of a suspended ceiling are improved, the stability of the bearing plate is effectively enhanced through the auxiliary balance inclined struts, and inclination or falling caused by uneven weight distribution or external force is prevented; the main keel can be rapidly fixed or disassembled by screwing the pressing block, the ceiling keel can be conveniently assembled and disassembled through the ceiling locking piece, complex operation or tools are not needed, and the repeated utilization rate of materials is increased.

The application discloses a kind of high-strength composite pipe manufacturing method, it is related to composite pipe production technical field, including the following steps: S1, inner ring welding: through front end winding welding seat to inner ring reinforcing warp is arranged guidance, and through spark to inner ring spiral weft is welded to inner ring reinforcing warp outside, to complete the preliminary forming of the structure of composite pipe inner ring, and through center guide horizontal axis to the structure after preliminary forming is guided, S2, mesh belt winding: through middle layer mesh belt winding welding seat with middle layer steel wire mesh belt is covered to inner ring spiral weft outside, and through spark to middle layer steel wire mesh belt is welded to inner ring spiral weft outside, the stability of production equipment operation is improved, and effectively improve the convenience of mesh belt storage roller replacement adjustment, and the tubular product that is formed by warp steel wire and inner and outer weft steel wire is continuously welded into net-like framework, and is once co-extrusion composite with polyethylene plastic, steel-plastic three-dimensional interpenetration, each other inlay and jointly bear work load.

This utility model relates to the field of modular door technology and discloses an assembled door, including a side door frame, a horizontal door frame, and a door panel. The side door frame is snapped onto one corner of the horizontal door frame, and the door panel is movably disposed between the side door frame and the horizontal door frame. Two sets of braking installation components are symmetrically arranged inside the door panel. Each braking installation component includes a connecting column, a connecting rod, a gear, a rack, and a brake block. A brake block is fixedly connected to each end of the connecting rod, and a rack is fixedly connected to one side of the connecting rod. Two connecting columns are symmetrically arranged vertically, and two connecting rods are symmetrically arranged around the connecting columns. The rack is rotatably disposed inside the door panel. The connecting columns at the four corners of the door panel can be extended as needed. By changing the shape of the door, the number and placement of the horizontal and side door frames can be adjusted, so that the door panel and the two side door frames and the two horizontal door frames form a hinged door or a sliding door. This eliminates the need to replace a large number of parts and greatly improves the environmental adaptability and usage flexibility of the door.

The utility model discloses a semiconductor test probe contact mechanism, which belongs to the semiconductor test field and comprises a mounting seat and two fixing seats, the two fixing seats are internally provided with mounting grooves, the mounting grooves are internally and fixedly connected with first springs, the end parts of the first springs are fixedly connected with limiting blocks, and the limiting blocks are arranged in the mounting grooves. According to the scheme, a second spring and a pressing rod with a chamfer are arranged, so that pressing operation is easy and smooth, an inclined block can be pushed by pressing the pressing rod downwards, the limiting block is driven to move, the clamping block is clamped to the upper portion of the clamping block, and the clamping block is clamped to one side of the limiting block; the clamping block is separated from the limiting block, the fixing base is convenient to disassemble and adjust, the second spring automatically resets after pressing, and manual operation is simplified; the handle below the clamping block further optimizes operation, the clamping block can slide conveniently, clamping connection and separation can be completed rapidly, and operation efficiency is improved.

The utility model relates to the technical field of conveying belt structures, and discloses a conveying belt structure for a plate turnover machine, which comprises a conveying belt group and a bottom plate, the conveying belt group is assembled at the top of the bottom plate, corrugated grooves are uniformly formed in the outer part of the conveying belt, supports are uniformly distributed at the top of the bottom plate, and the corrugated grooves are formed in the bottom plate. Clamping mechanisms are welded to the two sides of the top of the support, each clamping mechanism comprises a clamping block, the clamping blocks are connected with the support, and vertical blocks are slidably connected into the clamping blocks. According to the conveying belt structure for the plate turnover machine, through cooperation of the clamping grooves, the sliding grooves, the clamping blocks, the vertical blocks, the springs, the connecting rods and the clamping arms which are additionally arranged, the supporting arms and the supports can be rapidly connected in a clamped mode, the clamping stability of the clamping mechanisms and the clamping grooves is improved through pressure borne by the tops of the supporting arms, and then the situation that the supports and the supporting arms are disconnected is avoided; under the condition that the bracket and the supporting arm are convenient to disassemble, the overall stability of the device is greatly improved.

The utility model belongs to the technical field of reaction kettles, and particularly relates to a chemical production reaction kettle convenient to clean, which comprises a reaction kettle body, an upper cover plate is movably mounted at the top of the reaction kettle body, a connecting assembly is arranged on the surface of the upper cover plate, a butt joint assembly is arranged on the surface of the upper cover plate, a clamping assembly is arranged on the surface of the upper cover plate, a fixing assembly is arranged on the surface of the upper cover plate, and a driving mechanism is arranged at the top of the upper cover plate. A cleaning mechanism is arranged on the inner wall of the reaction kettle body; through the arrangement of the first butt-joint plate and the second butt-joint plate, the upper cover plate can be quickly and accurately aligned with the reaction kettle body through the cooperative use of the first butt-joint plate and the second butt-joint plate, and meanwhile, the upper cover plate and the reaction kettle body can be reinforced.

The utility model relates to the technical field of protection tools, and discloses a protection tool for thermal spraying, which comprises a spraying muzzle, the inner wall of the spraying muzzle is provided with a guide groove, the outer wall of the spraying muzzle is provided with a protection sleeve, the outer wall of the protection sleeve is fixedly provided with a sliding block, the top of the sliding block is provided with a connecting assembly, and the connecting assembly is connected with the guide groove. A first sliding groove and a straight opening groove are formed in the outer wall of the protective sleeve, a connecting column and a rotating disc are arranged on the outer wall of the protective sleeve, a first arc-shaped groove is formed in the outer wall of the rotating disc, and a protective shell is fixedly installed at the top of the connecting column. The adjustable protection device is formed by six straight opening grooves distributed in a circular array, a connecting column, an arc-shaped groove I and a fan-shaped protection shell, so that an operator can drive the protection shell to synchronously expand or contract outwards through sliding fit of the arc-shaped groove I and the connecting column only by rotating a turntable, and then the size and the shape of a protection area are adjusted; therefore, different coverage isolation non-spraying areas can be better adapted.

This utility model belongs to the field of circulation valve technology, specifically relating to an exhaust gas circulation valve, comprising: a valve body, a base plate at the bottom of the valve body, a side pipe on the top periphery of the valve body, and a docking plate at the end of the side pipe; a snap-fit ​​structure, comprising multiple snap-fit ​​structures, all disposed on the base plate, for connecting the base plate to the vehicle body; and a latching structure, disposed on the side pipe near the docking plate, for connecting the end of the side pipe to the end of the external pipe, thereby solving the problem that existing exhaust gas circulation valves mostly use bolts to connect to the external pipe and the vehicle body, which results in slow connection speed and low efficiency.

The utility model relates to the technical field of suspended ceiling structures, and discloses a light profile decorative suspended ceiling structure which comprises a hanging piece assembly, a keel assembly, a galvanized angle steel conversion layer and a decorative assembly. According to the light profile decorative suspended ceiling structure, through the synergistic effect of the hanging piece body of the hanging piece assembly, the first limiting rod and the first spring, after the hanging piece body is inserted into the first limiting groove of the main keel, the first spring automatically rebounds and is locked, rapid clamping connection of the hanging piece assembly and the keel assembly is achieved, traditional bolt fixing is replaced, and the mounting efficiency is improved; a convex block at the bottom of the main keel is matched with a second limiting rod and a second spring of the auxiliary keel, transverse limiting is completed through a second limiting groove, the rapid installation effect between the main keel and the auxiliary keel is achieved, an elastic buffering node can be formed, and the deformation risk caused by thermal expansion and cold contraction or floor vibration is reduced; one-key unlocking and limiting can be achieved by pulling the first pull piece or the second pull piece, and rapid disassembly between the hanging piece assembly and the inner assembly of the keel assembly is achieved.

The utility model discloses a kind of frame steering structure, it is related to motorcycle technical field, including frame, the top of frame is fixedly connected with sleeve, the downside of sleeve is connected with support frame in frame, detachably connected with steering rod between support frame and sleeve, steering rod is connected with handle in sleeve one end close to, steering rod is connected with limit structure in support frame one end close to;The utility model steering rod is arranged in the multi-tube structure cavity of frame, frame is formed to steering rod circumferential encircling type protection, significantly reduce the risk of deformation or fracture of steering rod due to collision or jolt in the process of riding. Sleeve is formed triangular stable structure with frame by double connecting rod, and welding fixation further enhances torsional strength;Sleeve and support frame are respectively arranged at the axial two ends of steering rod, forming "double fulcrum" support system. The stepped diameter-reducing design of link rod realizes the quick clamping with link ring, and the disassembly and assembly of steering rod can be completed without additional fasteners.

The utility model discloses a detachable maintenance platform for photovoltaic panel relates to the technical field of maintenance, including base, the upper end surface of base is provided with maintenance subassembly and adjusting assembly, and maintenance subassembly includes recess, boss, maintenance board and support block, and the side surface of support block is connected with the lower end surface of maintenance board, and the side surface of boss is connected with the inner wall of recess, and the side surface of boss is connected with the side surface of maintenance board, and recess is set up in the side surface of maintenance board, and two maintenance boards are connected with recess through boss, the utility model has the advantages of: maintenance board realizes quick joint or split through the boss and recess of side surface, can according to the size of photovoltaic panel, arrangement mode flexible adjustment platform length, adapts to the photovoltaic array maintenance demand of different scale, simultaneously, the volume reduces after splitting, is convenient for transportation and storage, especially suitable for the scene such as outdoor photovoltaic power station needing mobile operation.

The utility model provides a photovoltaic module heat dissipation frame relates to photovoltaic equipment technical field, include: photovoltaic board, the edge position of photovoltaic board is provided with the outer frame subassembly, directly with the inner strip frame of outer frame subassembly of photovoltaic board outer end place first sleeve connection, with heat dissipation subassembly and outer frame strip contrast fixed, the fixed component is connected between heat dissipation subassembly and outer frame subassembly, make outer frame subassembly form protection to photovoltaic board outer end, the outer frame subassembly has the installation of convenient heat dissipation subassembly simultaneously, let heat dissipation subassembly close photovoltaic board and contact heat transfer, the back of photovoltaic board installs conducting component simultaneously, let conducting component better heat import heat dissipation subassembly and radiate, and auxiliary component is assisted and let conducting component more closely use, solved the simple heat dissipation structure of current, the heat dissipation structure in the frame position, can not steadily export heat, lead to equipment to photovoltaic board and cause the problem of poor heat dissipation efficiency.

This utility model relates to the field of rafting boat technology and discloses an inflatable plastic rafting boat. It achieves rapid fixation and engagement of the backrest by setting up side locking lugs, bottom locking lugs, limiting and fixing straps, hook A, and hook B. First, the backrest is placed on the bottom wall of the rafting boat. Then, hook A is inserted into the side locking lugs to initially define the position of the backrest. The user then enters the rafting boat, sits on the surface of the backrest, and leans back. Once the user finds a comfortable position, hook B is then hooked into the bottom locking lugs to completely fix the backrest position. The back straps are then pulled out from the back of the backrest and hung on the user's shoulders. The locking tongue is inserted into the buckle to fix the user's position, achieving the effect of rapid installation of the backrest and fixing straps.

This utility model discloses a snap-fit ​​structure for an instrument circuit board, belonging to the field of instrument technology. It includes a mounting bracket and an additional circuit board movably connected to the mounting bracket. A fixing post is fixed inside the mounting bracket. Two snap-fits for fixing the additional circuit board are movably connected to the outside of the fixing post. Two fixing springs for supporting the snap-fits are sleeved on the outside of the fixing post. A connecting bracket is fixed to one outer wall of each snap-fit. A through hole is formed on the surface of the mounting bracket, and a fixing sleeve is inserted into the through hole. A movable hole is formed on the fixing sleeve, and a connecting post is movably connected into the movable hole. A push block for pushing the connecting bracket is fixed to the bottom of the connecting post. This snap-fit ​​structure for the instrument circuit board allows for quick assembly and disassembly of the additional circuit board and also has a protective function to prevent accidental opening of the snap-fits.