31results about How to "Unfold stable" patented technology

The invention relates to the technical field of composite material manufacturing, in particular to a continuous fiber reinforced thermoplastic composite material mold pressing feeding device which comprises a supporting frame, a plurality of rollers are rotationally connected into the supporting frame, and one end of each roller extends out of the supporting frame and is coaxially and fixedly connected with a chain wheel. A driving assembly for driving the rollers to rotate is arranged at one end of the supporting frame, and the chain wheels are in chain transmission with the driving assembly; a plurality of L-shaped transverse plates transversely arranged between every two adjacent rollers are arranged on the lower portion of the supporting frame, first motors are installed on the long edges of the L-shaped transverse plates, output shafts of the first motors are coaxially and fixedly connected with a plurality of eccentric wheels, and the ends, away from the first motors, of the output shafts are rotationally connected with the short edges of the L-shaped transverse plates; the sieve plates are located in the motion trail of the eccentric wheel. Vibration dust removal of the fiber material is synchronously completed in the feeding process, so that the fiber surface cleanliness and the resin impregnation uniformity are remarkably improved, and the mechanical property and the surface quality of the finished composite material are improved.

The utility model discloses an auxiliary device for folding and storing protective clothing, and belongs to the technical field of medical instruments. The protective clothing folding and storing auxiliary device comprises a bearing plate, sleeve placing plates are hinged to the two sides of the bearing plate respectively, a clothing and trouser placing plate is hinged to the side, located between the two sleeve placing plates, of the bearing plate, and the clothing and trouser placing plate comprises thigh plate pieces and shank plate pieces; one side of the thigh plate is connected with a hinge, the thigh plate is hinged to one side of the shank plate through the hinge, supporting legs are installed at the corners of the thigh plate and the shank plate respectively, the bottom faces of the supporting legs are flush with the bottom face of the bearing plate, and the thigh plate is hinged to one side of the shank plate through the hinge. A clothes and hat placing plate is hinged to the side, away from the clothes and trousers placing plate, of the bearing plate, a groove is formed in the top face of the bearing plate, a folding plate is arranged in the groove and comprises a plate body, and the plate body is hinged to one side of the inner wall of the groove.

The application relates to the aluminum alloy processing technical field and discloses a new energy truck aluminum alloy box body, which comprises a detachable truck box frame, the truck box frame comprises aluminum alloy side plates spliced through supports, triangular irons are arranged at the corner positions of the supports, rotatable inner frames are arranged on the aluminum alloy side plates, a traction assembly for driving the inner frames to rotate is further arranged in the truck box frame, the traction assembly comprises matched extension plates and rollers, and a sliding cylinder is slidably arranged on a vertical column; the truck box frame further comprises a bottom plate, a limiting assembly for fixing the inner frames is arranged on the periphery of the bottom plate, the limiting assembly comprises a limiting pin sleeved in a limiting cylinder, a limiting spring and a limiting rope are connected to the bottom end of the limiting pin, the other end of the limiting rope penetrates through the limiting cylinder and is connected to a cylinder, a suspension spring is arranged on the sliding cylinder, and the roller is not in contact with the extension plate when the inner frame is in a vertical state. Compared with the prior art, the application solves the problems such as low truck box unloading efficiency.

The utility model relates to technical field of rain shelter, disclose a telescopic rain shelter including: rain shelter frame, the rain shelter frame is provided with two slide rails, two rhombus telescopic frames, the rhombus telescopic frame includes spring and multiple first and last connected rhombic frame, the rhombic frame slidingly arranged on the slide rail, the end of adjacent two edges of the rhombic frame all articulates, two diagonal lines of the rhombic frame are respectively vertical direction setting and horizontal direction setting, the both ends of spring are connected with the top end diagonal articulation point of rhombic frame and the bottom end diagonal articulation point of rhombic frame respectively, and the spring is in the tensile state, tarpaulin, the two sides of tarpaulin bottom are set up on two the rhombus telescopic frame respectively, the utility model discloses through setting up tensile state spring along diagonal line direction in the top end diagonal articulation point and the bottom end diagonal articulation point of rhombic frame, lets the rhombus telescopic frame equidistant extension formed by multiple series connection rhombic frame, makes the rain shelter even stretch, avoids the rain shelter concave waterlogging situation to occur.

The utility model belongs to the technical field of drawing tables, and particularly relates to a drawing table capable of being stored and folded, which comprises an outer shell, an unfolding assembly comprises a two-way screw rod, connecting seats are fixedly arranged on two sides of a fixing seat, and the two-way screw rod is rotatably arranged in a sliding groove formed in the top surface of each connecting seat. The outer sides of the two ends of the bidirectional lead screw are sleeved with a first sliding block and a second sliding block in a threaded connection mode respectively, connecting bases are fixedly arranged on the top faces of the first sliding block and the second sliding block and rotationally connected with one end of a movable rod, and the other end of the movable rod is rotationally connected with the bottom face of a movable plate. A placement plate is rotatably arranged between the two sets of limiting plates and connected with an angle adjusting assembly arranged on one side of one set of limiting plates, the angle adjusting assembly comprises a first worm gear, a shaft rod of the first worm gear is connected with one end of the placement plate in a penetrating mode, and one side of the first worm gear is connected with a first worm in an engaged mode; the problems that a traditional drawing table is rigid and fixed in overall structure, large in occupied area and inconvenient to carry are solved.

The utility model belongs to deck chair technical field, especially relates to a support foot linkage of folding deck chair and support mechanism, including bed body and be used for supporting the support frame of bed body, the bed body includes the seat frame and backrest that can be relatively folded, and the support frame is arranged on the seat frame, and the support foot is rotationally arranged on the backrest, and the transmission connecting rod is between the support foot and the seat frame, and the transmission connecting rod is rotationally connected with the support foot and the seat frame respectively, the backrest is controlled and is unfolded with the seat frame, and the transmission connecting rod can drive the support foot and the backrest to unfold oppositely, thereby making the support foot can support the backrest, the backrest is controlled and is folded with the seat frame, and the transmission connecting rod can drive the support foot and the backrest to fold oppositely and draw together, the transmission connecting rod is telescopic link, or, a plurality of installation sites are set up on the transmission connecting rod and are connected with the support foot and the seat frame, the utility model's purpose lies in providing a support foot linkage of folding deck chair and support mechanism that is stable in structure and is convenient to store and transport.

The utility model relates to the technical field of massage sofas, and discloses a multifunctional massage intelligent sofa which comprises a sofa body, a plurality of sofa cushions are installed at the top end of the sofa body, a first fixing plate is fixedly connected to the inner wall of the bottom end of the sofa body, and a driving motor is fixedly connected to the left end of the first fixing plate. The driving end of the driving motor is connected with a sliding groove pipe through a massage set, the inner wall of the sliding groove pipe is slidably connected with a massage head, the front side and the rear side of the left end and the right end of the sofa body are fixedly connected with first extension frames, the opposite ends of the first extension frames are connected with table plates through functional sets, and the opposite ends of the table plates are fixedly connected with fixing rings. According to the utility model, the lifting of the massage head is controlled through the adapter plate and the adapter ring, the composite massage of rotation and pressing is realized, the massage effect is improved, and through the unfolded extension frame and the torsion spring locking mechanism, the table plate is ensured to be stable and reliable after being unfolded, can bear a larger load, and has improved functionality.

A box girder segmented foldable shrink core mold, which comprises segmented core molds, stacked rod longitudinal connecting steel wires and core mold longitudinal connecting bolts; the adjacent edges of the segmented core molds are connected by the core mold longitudinal connecting bolts to form a whole; a stacked rod longitudinal connecting steel wire is connected between the adjacent segmented core molds. The box girder segmented foldable shrink core mold has the following beneficial effects: the box girder folding inner mold can be stably folded and unfolded, and can be stably separated from the concrete, and the operation is convenient, so that the dismounting efficiency and construction safety of the box girder core mold can be improved.

The utility model discloses a telescopic awning, which belongs to the technical field of sunshade equipment, and comprises a fixed seat, the fixed seat is provided with a corresponding accommodating chamber, the lower part of the front side of the accommodating chamber is movably provided with a clamping plate through an extension arm, and when a sunshade cloth is released, the clamping plate is clamped by the extension arm. The clamping plate moves to a preset position along with the free end of the sunshade cloth through natural stretching of the unfolding arm, when the sunshade cloth is rolled up, the clamping plate is pulled back to the original position, the unfolding arm is stressed to be retracted into the containing cavity, the sunshade cloth is always in a straight state when being unfolded and folded, and the device is compact in structure, easy and convenient to operate and high in practicability. In addition, it can be ensured that the sunshade cloth is always in a straightened state when unfolded and folded, meanwhile, the lighting function is added, and practicability is improved.

The application discloses a double-single-hook anti-bottom-hanging structure combined fish hook and bait, and relates to the technical field of fishing gear, comprising: a hanging ring, a first fish hook, a second fish hook and a detachable connecting sleeve; wherein the hook handle ends of the first fish hook and the second fish hook are movably connected in the hanging ring, the detachable connecting sleeve is movably sleeved between the hook handles of the first fish hook and the second fish hook, and is used for folding the hook heads of the first fish hook and the second fish hook to the outside of the middle part of the bait body. The application has low manufacturing cost, the combined fish hook can be connected with soft glue and hard plastic simulation baits of different styles, has strong universality, is easy to mass produce and popularize and apply, and comprehensively improves the use defects of the traditional simulation bait fish hook structure, and greatly improves the overall experience and fishing effect of the lure fishing.

The invention relates to the technical field of cutters, in particular to a high-precision replaceable side milling cutter which comprises a cutter shell body, a cutter shell bearing seat is mounted in the cutter shell body, a cutter handle is arranged on the inner side of the cutter shell bearing seat, a connecting shaft is fixedly connected to the bottom end of the cutter handle, and a mounting seat is fixedly mounted at the bottom end of the cutter shell body through a plurality of first bolts. The tool holder is arranged in the mounting base in a penetrating and rotating connection mode, the fixing frame is fixedly connected to the outer wall of the mounting base, the tool protection assembly is arranged on one side of the fixing frame, and the automatic retracting and releasing mechanism is arranged on one side of the tool protection assembly in a rotating connection mode. According to the milling head, the mounting seat provided with a cutter can be quickly disassembled, the characteristics of high precision, small size and high rigidity are realized through precise mechanical interface modularized quick-change interface connection, the milling head is compact in size and can go deep into a narrow space, and the precision of a machined surface is guaranteed.

This application relates to the field of building construction technology and discloses a vertical precast component positioning and installation system and method. The system includes a moving load-bearing mechanism, a component clamping and flipping mechanism, and a rebar correction and positioning mechanism. The component clamping and flipping mechanism clamps the vertical precast component and drives it from a horizontal transport state to an upright installation state. The rebar correction and positioning mechanism is used to position and correct the upper end of the exposed section of the pre-embedded rebar at the installation location. The rebar correction and positioning mechanism includes a correction bracket and multiple correction claws. In the retracted state, the correction bracket can be inserted into the installation area through the gap between adjacent pre-embedded rebars from one side. In the open state, the multiple correction claws respectively clamp the upper end of the corresponding exposed section of the pre-embedded rebar. After correction is completed, the component clamping and flipping mechanism drives the vertical precast component to descend, aligning the bottom precast hole with the pre-embedded rebar and fitting it in place for installation. This application can improve the hole alignment accuracy and construction efficiency of precast component installation.

The utility model relates to the technical field of picture frame, specifically disclose a telescopic comprehensive picture frame, include: mounting seat, support frame, support frame installation in the bottom of mounting seat, support mechanism, support mechanism fixedly connected at the top of mounting seat, the utility model discloses the installation pole, support rod and support frame that set up, make the picture board mechanism adopt the design of unfoldable, through the rotary connection of support rod and rotating sleeve base and the rotary cooperation of hinged link and telescopic cover, realize the flexible unfolding of support rod, the support rod after unfolding can stable support picture board mechanism, make it horizontal spread in support rod top, the map display and use conveniently, the picture board surface covers PVC material waterproof membrane, and this film layer has the light transmission and waterproof nature, can guarantee the clear visible of map, can effectively prevent rain in the field environment, the film surface of special processing supports ball pen or neutral pen directly carries out the mark on the picture, satisfies the real -time mark demand of field operating personnel.

The utility model discloses a performance mobile vehicle. The performance moving vehicle comprises a vehicle body, a large display screen is arranged on the front side of the vehicle body, performance content can be conveniently propagandized through the large display screen, passers-by can conveniently watch the performance content, a loudspeaker box is arranged on one side of the large display screen, an extension plate is arranged below the large display screen, a plurality of handles are arranged on the front side of the extension plate, and the handles are arranged on the front side of the extension plate. A plurality of pulleys are arranged at the bottom of the extension plate, T-shaped grooves are formed in the positions, close to the outer sides of the pulleys, of the interior of the vehicle body, threaded rings are fixed to the front sides of the pulleys, a plurality of bolts are arranged on the extension plate, and the bottoms of the bolts penetrate through the extension plate and are in threaded connection with the vehicle body, so that the extension plate and the vehicle body are fixed; the area of a performance stage is increased, and performance is facilitated. The performance mobile vehicle provided by the utility model is not only suitable for performance propaganda, but also can be used for other occasions needing temporary stages or display screens, and has higher application value.

The invention discloses a convenient folding scooter for old people. The convenient folding scooter comprises a bogie, a front frame and a rear frame, by means of the collaborative folding structure, synchronous folding of the frame, the steering handlebar and the cushion frame is achieved, step-by-step operation is not needed, integral folding can be triggered only by pulling the control handle, the operation steps are reduced to one, the front frame and the cushion frame of the convenient and fast folding old people mobility scooter get close synchronously during folding, the whole frame is folded downwards along the hinged position, and the operation is convenient and fast. The size is obviously reduced after folding compared with an unfolded state, home storage and automobile transportation are facilitated, the application scenes cover home riding instead of walk, short-distance travel and the like, and the high practical value is achieved.

The invention relates to the technical field of unmanned aerial vehicles, in particular to a wing folding and unfolding device and an unmanned aerial vehicle, the wing folding and unfolding device comprises two wings, an elastic part and a locking part, the two wings are arranged in a staggered mode, the wings are configured to be connected with corresponding target mounting parts, the wings can rotate relative to the target mounting parts, and the locking part is connected with the elastic part. The folding mechanism is used for switching between a folding position and an unfolding position; the elastic piece is respectively connected with the two wings and is used for providing elastic acting force for the two wings, so that the wings have the tendency of rotating from the folding position to the unfolding position; the locking pieces are respectively connected with the corresponding wings and the target mounting piece, and the locking pieces are used for locking the wings rotating to the unfolding position. The wing folding and unfolding device and the unmanned aerial vehicle are simple in structure, high in space utilization rate, small in size, light in weight and high in wing synchronism and reliability.

The utility model relates to a windproof iron wedge technical field, concretely is a kind of wharf portal crane windproof iron wedge, including iron wedge body, the inside of iron wedge body is equipped with through-hole, the left and right sides of iron wedge body side are all clamped with clamping plate, the top of clamping plate is fixedly connected with fixed frame, the inside of clamping plate is equipped with insertion hole, the inside of insertion hole is inserted with plug shaft, the one end of plug shaft is equipped with slot, the side of clamping plate close to slot is equipped with sliding slot.The utility model has the advantages of: when using, after pulling plate is pulled to right, again, plug shaft is penetrated clamping plate and iron wedge body, when plug shaft is penetrated clamping plate, spring after hand release can be pushed to left with plug plate and complete reset, and the plug plate after reset is inserted into the slot of plug shaft, the fixation of plug shaft can be quickly completed, reach the purpose of being convenient for installation and disassembly plug shaft;The setting of positioning rod can avoid bending when spring compression, can assist spring more stable contraction and unfolding.

The utility model relates to the technical field of plastic packaging film processing, in particular to a cooling forming device for plastic packaging film processing, which comprises a support plate, a cooling component and a rolling component are respectively arranged at the top of the support plate, and the rolling component is positioned on the side surface of the cooling component. Through cooperative use of a guide plate, a mounting hole, a heat dissipation fan, a first cleaning roller, an electric telescopic rod, a mounting frame and a second cleaning roller, comprehensive cooling and cleaning of a plastic packaging film before winding are achieved, through cooperation of a guide roller and a winding roller, the packaging film can be stably unfolded before winding, forced air cooling is conducted on the packaging film through the heat dissipation fan, and the packaging film can be conveniently cleaned. Heat dissipation is greatly accelerated, an ideal cooling effect can be achieved before a packaging film is wound, meanwhile, a second cleaning roller is driven by an electric telescopic rod to be close to a first cleaning roller, double-face cleaning can be conducted on the packaging film when the packaging film passes through the second cleaning roller, chippings and dust on the surface of the film are effectively removed, and the service life of the packaging film is prolonged. And the cleanliness and the overall quality of the packaging film are improved.

This utility model relates to the field of engineering construction technology, specifically to an isolation device for engineering construction. It includes a support assembly and a disassembly assembly. The support assembly consists of a fixed block, a support plate, a connecting block, a limiting block, and a connecting rod. A connecting block is installed on one side of the fixed block, and the support plate is rotatably connected below the connecting block. A limiting block is fixedly connected to the top of the support plate. In use, this isolation device, through the arrangement of the fixed block, support plate, connecting block, limiting block, and connecting rod, unfolds the support plate outwards towards the fixed block, bringing it horizontally against the ground. Then, the connecting rod is manually rotated to engage one side of the connecting rod with the side of the connecting block. The limiting block limits the connection of the connecting rod. After the connecting rod engages with the connecting block, the support plate is stably attached to the ground without displacement, and the extended support area of ​​the device provides better support and ensures its stability.

The utility model discloses an intelligent safety tent capable of being folded quickly, which belongs to the technical field of tents and comprises a tent body, the tent body comprises tent cloth and a framework, the tent cloth is arranged on the outer side of the framework, an air filter and an air detector are arranged on the inner wall of one side of the tent cloth, and the framework comprises a top plate, four groups of supporting frames and four groups of second supporting rods. The two ends of the four second supporting rods are hinged to the bottom of the top plate and the tops of the corresponding supporting frames correspondingly, a screw is rotationally installed at the bottom of the top plate, a rotating handle is fixedly installed at the bottom of the screw, a threaded sleeve is in threaded connection with the outer side of the screw, and first supporting rods are hinged between one sides of the four second supporting rods and one side of the threaded sleeve. And first connecting rods are hinged to the two sides of the four sets of supporting frames, so that the time and energy for building the tent are greatly saved, the stability of the overall structure of the tent in the unfolded and folded state is greatly improved, a user can conveniently and rapidly arrange the tent in different scenes, and the use flexibility of the tent is improved.

This utility model relates to the field of motor vehicle sunshades and discloses an electric curtain system, including a curtain assembly, a pull cord mechanism, a drive assembly, and a guide mechanism. The pull cord mechanism is connected to the drive assembly and the guide mechanism, and the guide mechanism is connected to the curtain assembly. The pull cord mechanism can drive the guide mechanism to reciprocate under the action of the drive assembly, and the reciprocating motion of the guide mechanism realizes the unfolding and retraction of the curtain assembly. This utility model achieves smooth unfolding and retraction of the curtain through the cooperation of the curtain assembly, the pull cord mechanism, the drive assembly, and the guide mechanism, and has the characteristics of simple product structure, small space occupation, and low operating noise.

The invention belongs to the technical field of medical equipment, and particularly relates to a tumor in-vitro sample pretreatment device which comprises a mounting shell, and a cleaning part, a rotating part and a dewatering part are sequentially arranged in the mounting shell from top to bottom; the cleaning part can be used for performing low-temperature washing on the sample, removing substances on the surface of the sample and automatically discharging the sample into the dewatering part after the sample is washed; the upper end of the dewatering part is matched with a discharge port of the cleaning part, and the dewatering part can drive the sample to rotate to adsorb residual moisture on the outer edge of the sample after the sample is discharged by the cleaning part; after the sample is dehydrated, the rotating part drives the dehydrating part to rotate to discharge the sample. According to the invention, the anti-overflow groove of the cleaning part is matched with the liquid supply groove to accurately control liquid and discharge impurities, the worm and gear transmission of the rotating part and the arc-shaped track guarantee stable unfolding, and the elastic structure of the dewatering part efficiently absorbs water and dynamically adaptively discharges water, so that the whole process of sample pretreatment is efficient and reliable.

The utility model discloses a cart locking structure and a cart. The cart locking structure comprises a rotating joint, a push handle, a supporting leg, a first locking assembly and a second locking assembly. The push handle is provided with an operating handle, and the operating handle can move relative to the push handle; the locking assembly can relatively fix or unfix the rotating joint and the outer side of the supporting leg; and the locking assembly can relatively fix the rotating joint and the inner side of the supporting leg or unfix the rotating joint and the inner side of the supporting leg. The inner sides and the outer sides of the supporting legs are synchronously locked through the first locking assemblies and the second locking assemblies, the situation that the supporting legs are loosened or unfolded accidentally due to factors such as shaking of a baby and uneven ground in the running process of the stroller can be effectively prevented, and therefore it is guaranteed that the stroller can be stably unfolded in various scenes; and therefore, the infant is prevented from being injured due to the toppling of the stroller, and the safety of the stroller is remarkably improved.

The utility model belongs to the technical field of power amplifiers, and particularly relates to a power amplifier structure which comprises a machine body middle frame, an upper panel and a lower panel are fixedly mounted at the top and the bottom of the machine body middle frame respectively, clamping grooves are formed in the left side and the right side of the upper panel and the left side and the right side of the lower panel respectively, and ventilation plates are arranged on the clamping grooves. According to the utility model, the left and right sides of the upper panel and the lower panel are respectively provided with the ventilation plates which can be rapidly disassembled and assembled, and the structure design of the rapid disassembly assembly is adopted, so that a user can conveniently disassemble the ventilation plates and the matched dustproof nets, dust and impurities accumulated in long-time use are effectively removed, heat on the circuit board is rapidly conducted out through the heat conduction assembly, and the service life of the circuit board is prolonged. Compared with a traditional single air cooling mode, the liquid cooling technology can absorb heat of a high heating element more efficiently, the temperature of a core component is reduced, and the service life of equipment is prolonged.

The utility model relates to the technical field of slope protection construction, in particular to a slope protection excavation folding main beam directional extension driving device which comprises a double-foot support, the double-foot support comprises a pair of supporting legs rotationally connected to adjacent main beams, the other ends of the pair of supporting legs obliquely extend towards one side and are hinged to each other, and the hinged position is rotationally connected with a driving telescopic rod. The folding beam assembly has the advantages that the double-foot support is matched with the driving telescopic rod, the purposes of fixed-point supporting and driving rotation are achieved, the folding beam assembly is supported by the double-foot support through rotating connection between the double-foot support and the folding beam assembly, and therefore the folding beam assembly is convenient to use. According to the invention, a pair of adjacent beams are pulled and limited and are prevented from falling off, and angle deflection is realized by utilizing the telescopic driving of the driving telescopic rod, so that stable folding and unfolding are realized, a rotary connecting piece between the main beams is prevented from bearing relatively large rotary supporting torsion, and the driving safety and stability are improved.

This utility model relates to the field of cardboard box production technology and discloses an automatic folding and forming machine for cardboard box production. It includes a processing base, a processing table installed at the bottom of the processing base, a support base installed at the top of the processing table, a door hinged to the rear end of a dust collection box, a collection mesh frame installed inside the dust collection box, and a negative pressure fan installed at the bottom of the dust collection box. This utility model, by incorporating a suction pipe, a moving frame, a fourth telescopic cylinder, and a collection mesh frame at the top of a second adsorption mechanism, allows the fourth telescopic cylinder to move above the cardboard box and adsorb dust from its surface when the cardboard box is placed above the second adsorption mechanism for folding. This achieves a dust removal function, keeping the cardboard box clean and facilitating better folding.

The utility model discloses a folding assembly and folding window, wherein the folding assembly comprises a connecting rod arranged between a window frame and a window sash, one end of the connecting rod is rotatably connected with a sliding member moving in a track of the window frame, and the other end is rotatably connected with a connecting block fixed on the window sash. The folding window of the utility model breaks through the opening limitation of traditional windows through the connection of the hinge of the rotating shaft of the window sash and the window frame and the folding assembly, the window sash can be completely folded to one side of the window frame to achieve the purpose of maximum opening, can satisfy the user's demand for extreme ventilation and field of view, and enhances the space connectivity of indoor and outdoor.

This utility model discloses a side curtain airbag for preventing rear seat passengers from lifting off the roof. It includes a side curtain airbag installed inside the car roof and a gas generator installed inside the side curtain airbag. The side curtain airbag is generally rectangular, with an air intake chamber connected to the gas generator formed in its upper central part. A front head protection chamber and a front window covering chamber are formed in the front part of the side curtain airbag; a rear head protection chamber and a rear window covering chamber are formed in the rear part of the side curtain airbag; and an upper ventilation channel and a lower ventilation channel are formed in the middle of the side curtain airbag. This utility model, by changing the inflation path of the side curtain airbag, makes the side curtain airbag deployment more stable, preventing rear seat passengers from lifting off the roof.