1197 results about "Back support" patented technology

An actuating mechanism for a powered furniture piece comprises a base, a seat rail operatively connected to the base, a back support bracket, a footrest mounting bracket, an ottoman drive link, a linear actuator, and a control link, such that when the linear actuator is extended to a first predetermined position, the footrest mounting bracket will be moved from a retracted position to an open position, the back support bracket will be maintained at an upright position, whereby the actuating mechanism will be disposed at a TV position, and when the linear actuator is extended to a second predetermined position, the back support bracket will be moved from the upright position to a reclined position whereby the actuating mechanism will be disposed at a fully RECLINED position.

Support system for supporting equipment comprising: a back support; shelves spaced from one another and extending from the back support and arranged to support the equipment, each shelf comprising: a connecting mechanism for providing a connected position in which the equipment is connected to the given shelf such that separation of the given shelf and the equipment along a first axis is blocked but relative movement along a second axis is possible; a locking mechanism for providing a locked position in which relative movement of the equipment and the given shelf along the second axis is blocked; and a release mechanism for releasing the locked position to permit the relative movement along the second axis, the release mechanism including an actuator on the given shelf or the equipment which can be actuated by a user.

The invention provides a turnable helicopter air inlet channel structure, and belongs to the technical field of helicopter structural design, the structure comprises a front support frame, a rear support frame, a left fixed cover, a right fixed cover, a movable cover, a lower air inlet channel, an air inlet channel support assembly and an air inlet net assembly, the air inlet channel is divided into an upper part and a lower part, wherein the upper air inlet channel is integrated on the movable cover, the upper section and the lower section are pressed and sealed through the P-type sealing ring, the air inlet net assembly is connected to the movable cover in a screwed mode, and the left side of the movable cover is connected with the left fixed cover; the right side of the movable cover is connected with the right fixed cover through a front hinge assembly and a rear hinge assembly. The front and the back of the movable cover are connected with the front support frame and the back support frame; the interior of the front side of the movable cover is connected with the front supporting frame; the air inlet channel supporting assembly, the lower air inlet channel, the front supporting frame, the rear supporting frame, the left fixing cover and the right fixing cover are riveted to form a stable frame structure. The device is simple in structure, convenient to mount and maintain, reasonable in stress form, safe, reliable and capable of solving the problems of maintainability and safety of the rear cabin engine of the power cabin.

The invention discloses an automatic bag feeding packaging production line, and relates to the field of bag feeding packaging machines, the automatic bag feeding packaging production line comprises a rack, a rotary table and a machine clamping assembly, and further comprises an auxiliary exhaust mechanism which is arranged at a heat sealing station and located on a bag moving path, and the auxiliary exhaust mechanism comprises a back supporting plate, an extrusion rod piece and a force application assembly; the extrusion rod piece comprises a cross rod and an inclined rod, the inclined rod and the cross rod are arranged at an included angle, the cross rod is located at a first height position above the height of materials in the bag, and through the synergistic effect of the cross rod and the inclined rod in the auxiliary exhaust mechanism, the extrusion rod piece acts on the area above the height of the materials in the bag, redundant gas in the bag is extruded, and the residual air amount is reduced; the sealing performance and the packaging appearance flatness after heat sealing are remarkably improved, the inclination angle design of the inclined rod and the extrusion rod piece with the adjustable height can adapt to the coexistence scene of solid floating objects and liquid, the liquid is prevented from overflowing to a bag opening, meanwhile, the floating objects are pushed and pressed to the position below the liquid level, and it is ensured that the exhaust process is stable and reliable.

The utility model provides a seat-back linkage seat, which comprises a support serving as a main body support of the seat, a back support piece for supporting the back of a human body and a seat part for supporting the buttocks of the human body, the support serving as the main body support removes and replaces a base plate in a traditional seat, and the support is rotatably connected with the back support piece. The seat part is also movably connected to the support through the rotary connecting part and the connecting rod, the seat part, the rotary connecting part, the connecting rod and the support form a four-connecting-rod mechanism, the seat part is driven to move through rotation of the back supporting piece on the support, the seat-back linkage function is achieved, and the seat-back linkage enables the seat to have the effect of preventing back rubbing and waist running; after the chassis is omitted, the cost of the seat is greatly reduced, the production and assembly time is saved, the production efficiency is improved, and the production benefit is increased while the comfort is ensured; in order to avoid tipping, when the back supporting piece tilts backwards, the seat part moves forwards and upwards, a balance point is kept, and the self-adaptive effect is always kept in the optimal state.

The invention relates to a master-slave multi-edge staggered tooth milling cutter structure with a reinforced shearing and cutting function. The milling cutter structure comprises a left-handed main cutting edge, a right-handed main cutting edge, a left-handed main chip groove, a right-handed main chip groove, left-handed micro teeth, a left-handed micro tooth slave edge, right-handed micro teeth, a right-handed micro tooth slave edge and other micro teeth. A micro-tooth slave edge is formed in a cutting edge strip of a traditional staggered-tooth cutter, and the micro-tooth slave edge and a main cutting edge alternately cut materials. When the cutter rotates, materials on the upper edge and the lower edge of a workpiece are sheared and cut in the strong constraint direction through the left rotating main cutting edge and the right rotating main cutting edge, a thermoplastic composite material with high toughness is extruded and deformed under the cutting action, and at the moment, a surface fiber back support is strengthened due to extrusion deformation. And the left-handed micro-tooth slave blade and the right-handed micro-tooth slave blade shear and remove the material which is not removed in the strong constraint direction again in a reciprocating and alternating manner, so that multiple times of reinforced shearing and cutting of the material are realized. The design is beneficial for removing materials in a surface layer weak constraint state, surface layer damage is inhibited, and low-damage milling of the thermoplastic composite material is realized.

The invention relates to a folding chair for camping, which comprises a chair seat bracket and a chair back bracket, the tail ends of the chair seat bracket and the chair back bracket are hinged with each other, and extension parts are arranged at the tail ends of the chair seat bracket and the chair back bracket; the first supporting leg is hinged to the extension part at the tail end of the chair seat bracket; the second supporting leg is installed at the front end of the chair seat support in a hinged mode, the second supporting leg comprises a first rod piece and a second rod piece, the first rod piece is installed at the front end of the chair seat support in a hinged mode, and the second rod piece is connected with the first supporting leg and the second rod piece in a hinged mode so that the first supporting leg, the first rod piece and the second rod piece can be located on the same plane after being folded. The two first supporting legs and the two second supporting legs are symmetrically arranged in the horizontal direction. According to the folding chair, the first supporting leg, the first rod piece and the second rod piece are located on the same plane after being folded and do not exceed the folded positions of the chair seat support and the chair back support, the occupied space is reduced, a plurality of chairs can be stacked and stored in a box, and the folding chair is convenient to carry.

An exercise bench includes a base frame having a left side rail with a channel and a right side rail with a channel, and a support system having a front bar and a rear bar extending substantially parallel to one another; rear angled support bars extending from the rear bar to the left side rail and the right side rail; and front angled support bars extending from the front bar to the left side rail and the right side rail; a mid-frame having wheels for engaging with the channels; a seat frame coupled to the mid-frame; a seat support and a back support each coupled to the seat frame; and receivers extending from one or more of the left side rail, the right side rail, the front bar, and the rear bar; the seat support and the back support are independently adjustable; and the receivers are to receive attachments.

A convertible seat for a marine vessel includes a seat base having a seat bottom and a seat back which extends transversely upwardly relative to the seat bottom, a back supporting cushion for an occupant seated on the seat bottom, a table coupled to the back supporting cushion, and a pivot mechanism which couples the table to the seat back, the pivot mechanism being configured such that the back supporting cushion and the table are movable into a storage position in which the table is sandwiched between the seat back and the back supporting cushion and a deployed position in which the table provides a supporting surface over the seat bottom.

The chair of the present invention includes a seat, a backrest, and a support structure supporting the seat and the backrest. The backrest includes an arm portion and a back support portion. The support structure includes a first shaft portion, a second shaft portion, a third shaft portion, a fourth shaft portion, a support base, an arm support portion, and a support link.

Child's seat and harness, the seat having an open front and a rear back support and sides which meet a base, the harness including a pair of shoulder straps and a pair of waist straps connected together at forward ends by a buckle and at rearward ends by a bracket, the bracket including a front side and a rear side, and an anchoring element in the form of a slot through which the strap passes and in which the strap includes an secured end which cannot pass through the slot for anchoring the rearward ends of the straps to the bracket, the straps extending from the front side of the bracket, and a cover plate is provided which is secured to the rear side of the bracket and covers the secured ends of the anchoring element. The straps may combine to form a single strap or remain separate.

The utility model discloses a waist supporting device and a seat, the waist supporting device comprises a back support, a waist rest and a telescopic assembly, and the waist rest is connected with the back support through the telescopic assembly; the adjusting assembly comprises a telescopic sleeve, a telescopic piece, a locking piece and an elastic piece, the telescopic sleeve, the telescopic piece, the locking piece and the elastic piece of the telescopic assembly are matched, the position of the waist rest can be adjusted forwards or backwards, so that the waist rest can well support the waist of a user, and the use requirements of customers are met.

An apparatus includes a seat cushion, a seat back supported relative to the seat cushion, wherein at least one of the seat back and the seat cushion includes at least two side bolster regions spaced apart laterally from each other, and a plurality of fluid bladders associated with each of the at least two side bolster regions. At least a subset of fluid bladders in each side bolster region are aligned with each other. Pressure in each fluid bladder is selectively adjustable in a plurality of directions.

The utility model provides a positive pressure type air respirator wearing device. The positive pressure type air respirator wearing device comprises a back plate, an annular paw, a back supporting cushion and a waistband rotating assembly. Wherein the annular paw and the back supporting pad are fixed to the front side and the rear side of the back plate respectively, and the waistband rotating assemblies are installed on the left side and the right side of the back plate through hinges respectively and connected with the second buckle through the waistband. Gas cylinders of different sizes are fixed through cooperation of the first adjusting positioning holes, the annular paws, the limiting belts and the first buckles, and the problem that stability is poor due to shaking of the gas cylinders is solved. Meanwhile, by adopting a structure installation mode of combining double-side back supporting cushions conforming to the curve shape of the waist and back of the human body with flexible damping balls and second adjusting positioning holes, the extrusion and impact of a positive pressure type air respirator on the back of the human body are avoided, meanwhile, the use of people with different heights is met, the physical output of rescue workers is effectively reduced, and the rescue efficiency is improved. And the use requirements of rescue workers are met.

The invention discloses a large fixed-wing unmanned aerial vehicle fire extinguishing performance evaluation test method, and relates to the field of aviation equipment. The method solves the problem that quantitative evaluation of fire extinguishing agent throwing precision and effective coverage range of a large fixed-wing unmanned aerial vehicle in a complex wind field environment is difficult, scale test parameter design is carried out based on similarity criteria and reference wind tunnel size, and then test model (unmanned aerial vehicle and fire extinguishing agent water tank) and adjustable cabin door structure design are carried out. The unmanned aerial vehicle model is installed on the upper tunnel wall of a wind tunnel through a lifting supporting rod in a back supporting mode, the fire extinguishing agent measuring system is installed on the central axis of a wind tunnel test section and is vertically aligned with a water tank, finally a large fixed-wing unmanned aerial vehicle fire extinguishing performance evaluation wind tunnel test is carried out, the effective range of a fire extinguishing agent is quantitatively treated, and the fire extinguishing performance is evaluated. The test method can effectively research the fire extinguishing performance of the large unmanned aerial vehicle under the influence of the flight speed, the launching angle, the height and the like of the unmanned aerial vehicle.

The invention discloses an electric power inspection exoskeleton modular structure, and belongs to the technical field of human body exoskeleton machine assistance, the electric power inspection exoskeleton modular structure comprises a supporting system, the supporting system comprises a back supporting plate, a waist supporting frame and thigh supporting rods, and a main body supporting frame is formed; the modular interface system comprises at least one group of mechanical interfaces, electrical interfaces and data interfaces which are uniformly distributed on a force transmission path of the support system; the functional module comprises a plurality of interchangeable power assisting modules, operation modules and protection modules, and the functional module is detachably connected with the supporting system through the modular interface system; a hybrid drive system includes a rigid driver and a flexible driver for providing position control and compliance force control, respectively. By means of the modular interface system, plug-and-play of functional modules such as power assisting, operation and protection is achieved, needed exoskeleton configuration can be rapidly assembled, multiple sets of exoskeleton equipment do not need to be arranged, and the equipment utilization rate and task adaptability are greatly improved.

The invention provides equipment and a method for automatically and vertically assembling a rocket storage tank cylinder section wall plate. The equipment comprises a working machine head integrated with a friction stir welding machine head and a laser scanning locator, a back supporting assembly, a pressing claw clamping system, a workbench provided with an arc sliding groove and a driving roller, and an auxiliary sliding groove. An arc sliding groove, a driving rolling wheel, an auxiliary sliding groove and a pressing claw system are matched with one another, automatic assembly of the long-cylinder-section wall plate on the workbench can be efficiently completed, and the long-cylinder-section wall plates with different diameters and lengths are compatible; in the assembling process of the long cylinder section wall plate and in the two stages after assembling is completed, the laser scanning positioning instrument detects and discriminates assembling process parameters, and the assembling precision is improved. According to the longitudinal seam welding machine, the long cylinder section wall plates can be automatically assembled quickly and accurately, the assembling precision after assembling is detected, and longitudinal seam welding of the four long cylinder section wall plates is completed with high quality and high efficiency.

A stadium seat includes a mounting base configured to be connected to a support structure, a vertical support extending upwardly from the mounting base, a seat support movably coupled to the mounting base, and a back support coupled to the vertical support. The seat support is movable relative to the mounting base between a first position, in which the seat support is at a first horizontal distance from the vertical support, and a second position, in which the seat support is at a second horizontal distance from the vertical support, the first distance being different than the second distance.

The invention discloses a photovoltaic module frame dismounting machine and a frame dismounting method, and relates to the technical field of photovoltaic module recovery, the frame dismounting machine comprises a rack, a front pressing mechanism, a back supporting mechanism and a frame dismounting mechanism; frame disassembling positions are arranged in the machine frame, a rectangular frame body is fixed on the peripheral side, the front face downward pressing mechanism is fixed to the top of the machine frame, comprises a pressing plate and a first driving mechanism and is used for getting close to or getting away from a photovoltaic module, and the back face supporting mechanism is located below the module and comprises a supporting table and a second driving mechanism. The clamping mechanism comprises a manipulator and a third driving mechanism and is used for clamping a photovoltaic module frame; when in use, the front pressing mechanism and the back supporting mechanism are clamped and fixed from the top and bottom of the assembly, and the frame disassembling mechanism is used for disassembling the frame from the periphery. By adopting the frame dismounting machine and the frame dismounting method, the frame dismounting efficiency and the frame dismounting quality of the photovoltaic module can be improved, the problem of fragmentation of photovoltaic glass is reduced, meanwhile, the junction box can be dismounted, and the recycling value of recycled materials is improved.

The invention relates to the field of seats, and particularly discloses a zero-gravity seat linkage framework which comprises a driving assembly, a linkage structure, a cushion structure, a leg supporting structure and a back supporting frame, the cushion structure comprises a movable base and a fixed base, and the driving assembly drives the movable base to slide on the fixed base in a limited mode; the back supporting frame is rotationally connected with the movable base through a back mounting rod, and the linkage structure can achieve overturning of the leg supporting structure and rotation of the back supporting frame in the moving process of the movable base. By arranging the linkage structure, the single driving assembly can drive the leg supporting structure to be unfolded or folded and drive the back supporting piece to be turned over, so that switching between a normal sitting posture and a zero-gravity sitting posture is achieved, the comfort is better, and due to the fact that the leg supporting structure and the back supporting piece act separately, the sitting posture is more comfortable. Therefore, the stretched leg support structure can be matched with backrests with various angles, a more flexible and personalized lying posture is further obtained, the manufacturing cost and the assembling difficulty are remarkably reduced through the overall structure, and the adaptability is high.

The utility model provides a back support and a seat, the back support comprises a chair back connecting part and a transverse part used for being connected with a seat frame in a front-back sliding mode, the transverse part is connected with supporting arms which are symmetrical left and right on the chair back connecting part through screws, and due to the split type structural design, the transverse part can be connected with the seat frame in a sliding mode in advance; therefore, when the back support is applied to the seat, the chair back connecting part of the back support can be independently packaged and transported, and the transverse part can be slidably connected with the seat frame into a whole in advance and then packaged and transported, so that the volume and the cost for packaging and transporting the seat are saved; a user can mount the chair back connecting part on the transverse part only through simple screw assembly, so that the assembly of the chair is completed; the assembly difficulty of the seat is reduced, and the use experience of the seat is improved.

The invention belongs to the technical field of armor protection, and particularly relates to an anti-penetration bionic spiral laminated backboard packaging ceramic composite structure. According to the composite structure, the metal frame strongly restrains ceramic, so that the erosion efficiency of a ceramic material to a projectile is improved, meanwhile, the damage range under single impact is reduced through packaging, and therefore the multiple-impact-resistant capacity of the protective structure is improved. And the spiral laminated backboard on the lower surface of the ceramic is mainly used for providing back support for the ceramic material, so that the crushing of the ceramic material is delayed, and the penetration resistance of the ceramic is improved. The high-molecular polymer material back plate of the composite protection structure absorbs energy of shots and broken ceramic fragments through large deformation by means of the high tensile strength of the high-molecular polymer material back plate, and therefore the protection structure is prevented from being subjected to aftereffect damage after penetration of the shots. In addition, the overall thickness and the surface density of the composite protection structure are low.

A magazine holder for use with a firearm. The magazine holder is configured to enable quick, one-hand magazine swaps. To accomplish this task, the user simply guides the firearm handle down along the front side of the back support. An integrated wedge body pushes the magazine slightly outward and away from the back support, thereby providing a clear path for guiding the magazine into the magazine well of the firearm. Once the firearm handle makes contact with the top of the pair of arms, the user pops the magazine out of the pair of arms by rotating the firearm handle outward. Next, while using the back support as a backstop, the user presses down on the firearm handle to slide the magazine fully into the firearm. Upon full insertion, the firearm is loaded and now ready to use.

The utility model, which relates to the technical field of the photovoltaic assembly recovery, discloses a photovoltaic assembly frame dismounting machine comprising a frame, a front pressing mechanism, a back supporting mechanism and a frame dismounting mechanism. Frame disassembling positions are arranged in the machine frame, a rectangular frame body is fixed on the peripheral side, the front face downward pressing mechanism is fixed to the top of the machine frame, comprises a pressing plate and a first driving mechanism and is used for getting close to or getting away from a photovoltaic module, and the back face supporting mechanism is located below the module and comprises a supporting table and a second driving mechanism. The clamping mechanism comprises a manipulator and a third driving mechanism and is used for clamping a photovoltaic module frame; when in use, the front pressing mechanism and the back supporting mechanism are clamped and fixed from the top and bottom of the assembly, and the frame disassembling mechanism is used for disassembling the frame from the periphery. By adopting the frame dismounting machine, the frame dismounting efficiency and the frame dismounting quality of the photovoltaic module can be improved, the problem of fragmentation of photovoltaic glass can be reduced, the junction box can be dismounted, and the recycling value of recycled objects can be improved.

A foldable electric bed includes pivotally connected front and rear frames, first buttock and back supporting units linked together and slide on the front frame, a first actuator disposed with the first buttock and back supporting units, a bottom frame slidably disposed with the rear frame, second buttock, thigh and lower leg supporting units linked together and disposed with the bottom frame, a quick release connected with the first and second buttock supporting units, and a second actuator disposed with the thigh supporting unit and the bottom frame. When the back supporting unit is driven by the first actuator to swing upwardly, the first and second buttock supporting units, the bottom frame, and the thigh and lower leg supporting units are driven to slide forwards.

The invention relates to a motorized functional fitting for a base of a box spring bed or of a platform bed, or for a slatted bed base, having the features of the preamble of claim 1. The invention also relates to a head-and back-supporting unit for a box spring bed or for a platform bed, and to a box spring bed, a platform bed or a slatted bed base.

A self-damping carrier basket pivot connection for a carrier basket transporter system having cars configured to travel along a pathway, at least some of which have a carrier basket pivotally connected thereto. The pivot connection includes a support connection configured for attachment a car. The support connection has at least three connection rollers that define a circular envelope and a mating connection configured to be attached to a back support of the carrier basket. The mating connection includes a housing with a part circular track that generally corresponds to or is larger than the circular envelope such that the rollers can be located within the part circular track. The part circular track includes at least one inwardly directed protrusion. The connection rollers engage in the part circular track such that the carrier basket is adapted to be pivotable by gravity so a product support surface of the carrier basket is maintained generally horizontal during movement of the carrier basket along the pathway, and the at least one inwardly directed protrusion provides an increased resistance to relative movement between the housing and a roller that contacts the protrusion.

The invention provides a wearable exoskeleton mechanism capable of supporting a lead garment, the wearable exoskeleton mechanism comprises a lead garment supporting frame and left and right leg supporting frames located below the lead garment supporting frame, the lead garment supporting frame comprises a shoulder supporting structure, a back supporting structure and a waist supporting structure, and a waist supporting part comprises a rear waist supporting plate and two side waist supporting rods; the left leg supporting frame and the right leg supporting frame support the lead clothes supporting frame through the left lead clothes hanger supporting rod and the right lead clothes hanger supporting rod, the lower ends of the lead clothes hanger supporting rods are fixed to the leg supporting frames on the corresponding sides, and the upper ends of the lead clothes hanger supporting rods are detachably connected with the front ends of the side waist supporting rods on the corresponding sides. During wearing, after the lead clothes supporting frame and the left and right leg supporting frames are independently worn, the upper ends of the left and right lead clothes supporting rods are correspondingly connected with the left and right side waist supporting rods; when the lead clothes hanger is taken off, the upper ends of the left and right lead clothes hanger supporting rods and the left and right side waist supporting rods are detached, and then the lead clothes supporting frame and the left and right leg supporting frames are taken off independently.

The invention discloses a movable formwork for pouring construction of a pollution intercepting main pipe protection layer and a construction method. The movable formwork comprises two sets of formwork assemblies arranged oppositely and a connecting structure connected between the two sets of formwork assemblies. The formwork assembly comprises a formwork body, a plurality of walking wheels arranged at the bottom of the formwork body in a controlled lifting mode and a plurality of telescopic supporting rods hinged to the back face of the formwork body, and the telescopic supporting rods are used for supporting the back face of the formwork body when the formwork assembly is used. According to the movable formwork for pouring construction of the pollution intercepting main pipe protection layer and the construction method of the movable formwork, the formwork is moved through the walking wheels, formwork supporting is completed through the telescopic supporting rods, frequent formwork dismounting and mounting and calling of large hoisting equipment are not needed, the construction efficiency is remarkably improved, the construction cost is reduced, and the construction period is shortened. Meanwhile, the construction precision and adaptability are guaranteed, and the influence on traffic around a construction area is reduced.

The invention relates to the field of road construction and maintenance, and particularly discloses a displacement type construction operation area buffer road fence and method.The road fence comprises rear base bottom plates arranged front and back, and rubber pads are attached to the bottoms of the rear base bottom plates; the two rear base bottom plates are connected together through the multiple rear base supporting plates, the side plates are installed in the middles of the two rear base supporting plates close to the outer side, the back supporting clamping plate is installed in the middles of the two rear base supporting plates close to the inner side, the back supporting connecting plate is located on the rear portion of the back supporting clamping plate, and the two sets of side plates are installed at the ends of the back supporting connecting plate respectively; the front ends of the side plates are connected with inclined struts through bolts; when a vehicle collides with the buffering road fence, a vehicle chassis climbs on the buffering road fence through the inclined struts, the inclined struts can rotate on the side plates with the bolts as shafts, the angle suitable for the vehicle chassis is formed, the vehicle chassis is dragged away from the ground, and the back supporting clamping plate rotates backwards and collides with the back supporting connecting plate to be limited. According to the invention, the impact injury of collision to passengers can be reduced to the greatest extent.