82results about How to "Convenient self-locking" patented technology

The invention relates to a single-degree-of-freedom occlusion robot applied to food and dental monitoring. The robot comprises a static platform, a power device and a transmission device; the power device and the transmission device are in transmission connection with each other and are both arranged at the upper end of the static platform, an upper jaw fixed platform and a lower jaw adjustable platform are further up and down oppositely arranged at the upper end of the static platform, an upper jaw mounting platform is rotatably connected with the transmission device, and the lower jaw adjustable platform is slidingly connected with the static platform; the lower jaw adjustable platform includes a sliding flat plate, the upper end of the sliding flat plate is provided with a lower jaw mounting platform, and the lower jaw mounting platform is connected with the sliding flat plate through a platform lifting assembly; the upper jaw fixed platform and the jaw mounting platform are also provided with monitoring systems. The robot can simulate the occlusion process of teeth, the deformation state of food in the occlusion process is observed, the force bearing condition of a tooth modelis monitored through the monitoring systems, and therefore for different kinds of food, the whole force bearing conditions of the teeth in the occlusion process can be detected and analyzed.

The invention relates to a folding type multifunctional drawing table. The folding type multifunctional drawing table comprises an upper table top, a lower table top, an upper table leg, a table top incline mechanism, a lower table leg, a table top lifting and dropping mechanism, a tool box and a tool box self-locking mechanism; the upper table top is connected to the lower table top in a pivoted mode, the front end of the lower table top is hinged to the upper table leg, and the table top incline mechanism is installed on the upper table leg and connected to the bottom of the lower table top in an abutting mode; the upper table leg is inserted into the lower table leg and can lift and drop along the lower table leg; the table top lifting and dropping mechanism is installed on the upper table leg and the lower table leg; the lower end of the tool box is hinged to the lower table leg, and the upper end of the tool box is connected to the lower table leg; the tool box self-locking mechanism is installed on the tool box; a clamping board is arranged on the lower table leg; the tool box self-locking mechanism is connected with the clamping board in a clamping mode. According to the folding type multifunctional drawing table, the height can be lifted and dropped freely, the angel and size of the table top can be adjusted freely, a user can keep the most comfortable posture in use, the fatigue is favorable to relief, the working efficiency of designing and drawing is improved, and the table has good practicability.

The invention discloses an improved art knife guide rail for preventing knife breaking. The improved art knife guide rail comprises a knife shell body with an upward opening, a pushing button, a knifebody and a knife body protecting assembly, wherein a guide rail body is arranged in an inner cavity of the knife shell body, the pushing button is arranged in the guide rail, the knife body is connected with the guide rail body in a sliding manner through the pushing button, and the knife body protecting assembly arranged on the periphery of the knife body in a sleeving manner. The knife body protecting assembly is formed by a first installing plate, a second installing plate and a third installing plate. According to the improved art knife guide rail for preventing knife breaking, on the premise of ensuring the use quality of the knife body, suitability between the guide rail for the art knife body and the knife body is effectively improved, then the situations that in the using process,the knife body is damaged easily, and safety accidents are caused easily can be effectively avoided, and thus the use precision of the guide rail is effectively improved. In addition, by arranging the knife body protecting assembly, the knife body can be protected, the use flexibility of the art knife body is improved conveniently, and therefore the use precision of the knife body of the arc knife is effectively ensured.

A combing element for a combing machine for combing textile fibres comprises a basic body (2) with a centre longitudinal axis (3), a circumferential surface (4) and two end surfaces (5), at least one catch (10) which is arranged on the circumferential surface (4) of the basic body (2), a profiled strip (9) for connecting the at least one catch (10) to the basic body (2), and a torsion rod (16) for locking and unlocking the profiled strip (9) on the basic body (2), wherein the profiled strip (9) is arranged in a receiving groove (14) of the basic body (2) and comprises a pivoting lever (19), by means of which the profiled strip (9) can be pivoted about a pivot axis (20) which is arranged parallel to the centre longitudinal axis (3), the torsion rod (16) is arranged in the receiving groove (14) such that it can be rotated about a rotational axis (17); which is arranged parallel to the centre longitudinal axis (3), the torsion rod (16) is accessible from outside the combing region, in particular from at least one of the end surfaces (5), the torsion rod (16) has a non-round cross section which is oriented perpendicularly with respect to the rotational axis (17), the torsion rod (16) is arranged on the pivoting lever (19) in such a way that, as a result of a rotation about the rotational axis (17), the torsion rod (16) can be displaced between a locked position for locking the profiled strip (9) on the basic body (2) and an unlocked position for unlocking the profiled strip (9) on the basic body (2).

The invention discloses a fixing device of a pipeline joint with a self-locking structure. The pipeline joint comprises a male joint and a female joint which are arranged on a pipeline; the self-locking structure comprises an arc-shaped boss arranged on the cylindrical surface of one end of the male joint; the arc-shaped boss is matched with an annular groove formed in the inner wall of a cavity formed in one end of the female joint; yielding grooves penetrating through the bottom of the annular groove and the end surface of one end of the female joint are symmetrically formed in two sides of the inner wall of the cavity and matched with the arc-shaped boss; a first step surface is formed in the root of the cylindrical surface, aligns the arc-shaped boss on the male joint with the yielding grooves in the inner wall of the cavity of the female joint and is inserted into the yielding grooves, so that the first step surface on the male joint and the end surface of the female joint are fully attached; and the male joint is rotated for 90 degrees, so that the male joint and the female joint are locked, and the sealing effect is good due to the fact that a sealing ring is arranged at the attachment position of the locked joints. The pipeline joint with the self-locking structure is simple in structure, convenient to use and good in sealing effect, and self locking is convenient.

The invention discloses a self-locking type battery lockset comprising a lock box (1), a lock catch (2), a motor (3), a worm (4), a gear train (5), a lock pin drive mechanism (6), a signal feedback device and a magnet induction device. The signal feedback device comprises a trigger switch (7) and a spring pin assembly (8). The magnet induction device comprises a magnet (9) and a hall element (10)used in cooperation with the magnet to conduct magnetic induction. The lock pin drive mechanism comprises a rack (601), a lock pin (602) and a spring piece (603). The motor, the worm, the gear train,the lock pin drive mechanism, the trigger switch, the spring pin assembly and the hall element are all arranged in cavity grooves of the lock box. The lock catch is arranged on one side of the lock box. A lock pin sleeving hole (11) is formed in the lock box. A lock pin hole (201) is formed in the lock catch. The self-locking type battery lockset is reasonable in structural design, redundant energy can be automatically unloaded, duel protection is achieved, and it is ensured that battery cover plate installation and battery installation are both completed after locking.

The invention discloses a quick-connecting and self-locking connector assembly comprising a male end and a female end. The internal side of the female end is provided with an elastic jack which is formed by multiple wire springs through uniform arrangement. The male end can be closely plugged in the elastic jack of the female end. The end part of the male end is provided with a first buckle structure. The internal side wall of the female end is provided with a second buckle structure. The first and second buckle structures can be connected in a buckling way. The external side wall of the female end is also provided with a release switch. The first and second buckle structures can be released by the release switch. At least one of the first and second buckle structures is made of non-conductive material. When the male end is plugged in the female end, the first and second buckle structures automatically buckled to realize self-locking so that the male end can be prevented from being automatically unplugged by the influence of external pulling force in the use process, and the connection stability of the male end and the female end can be effectively guaranteed. The release switch is also arranged on the female end so that the first and second buckle structures are enabled to be quickly released and unplugging of the male end is facilitated. The quick-connecting and self-locking connector assembly is simple in structure and convenient to operate and can realize quick plugging and self-locking.

The invention discloses a wooden door self-locking device with a noise elimination function. The wooden door self-locking device comprises an installation assembly and a self-locking assembly. After a door is closed, a second spring is shortened and returns to the original position, the generated pulling force can drive a second connecting rod to return to the original position along a second fixing piece, and self-locking of the door is facilitated; and in the process that a third magnetic block and a fourth magnetic block rotate along a clamping groove, the third magnetic block gradually gets away from the first magnetic block and gets close to a second magnetic block, the fourth magnetic block gradually gets away from the second magnetic block and gets close to the first magnetic block, the third magnetic block and the first magnetic block extrude each other, and the fourth magnetic block and the second magnetic block extrude each other due to the fact that like poles repel each other, so that after an operator loosens the hand, the third magnetic block is away from the second magnetic block and gets close to the first magnetic block, and the fourth magnetic block is away from the first magnetic block and gets close to the second magnetic block. According to the wooden door self-locking device with the noise elimination function, self-locking is carried out synchronously through pulling force generated by shortening of the springs, attraction force generated by attraction of unlike poles of the magnetic blocks and pushing force generated by repulsion of like poles of the magnetic blocks, the self-locking capacity of the wooden door is improved, and the service life is prolonged conveniently.

The invention discloses an accurate axial centering device for a wire harness. The accurate axial centering device is characterized in that a wire passing hole B is formed in the center of a supporting fixing plate; a clamping jaw seat is fixedly connected to the supporting fixing plate, a wire passing hole A is formed in the axis of the clamping jaw seat, and a plurality of radial sliding groovesA and a plurality of radial sliding grooves B are evenly formed in the upper portion of the clamping jaw seat in the circumferential direction; mechanical clamping jaws are slidably assembled in theradial sliding grooves A, and the middle portion and the left portion of the lower end of the mechanical clamping jaw are respectively connected with a longitudinal stop arm and a cam bearing follower; the longitudinal stop arm is connected with the inner end of the radial sliding groove B through a spring; a rotary sleeve is sleeved outside the clamping jaw seat through an axial cavity, and the inner side of the upper portion of the rotary sleeve is in rolling fit with the roller of a cam follower; a plurality of lift sliding grooves for allowing the roller to roll in and roll out are formedin the rotary sleeve in the circumferential direction; one end of the anticlockwise side of the lift sliding groove is provided with a guide inclined edge, and one end of the clockwise side of the lift sliding groove is provided with a limiting concave edge; and a cover plate is fixedly connected with the upper end of the clamping jaw seat through a connecting bolt. The accurate axial centering device can accurately position the axis of the wire harness, and can effectively reduce the labor cost.

The horizontal and vertical hydraulic adjustment motor adjuster is mainly composed of a frame plate, a motor fixing base, a base plate and a hydraulic rotation adjustment mechanism. The adjusting mechanism includes a hydraulic oil cylinder and an oil quantity control valve. The oil quantity control valve is connected with the hydraulic oil cylinder. The hydraulic oil cylinder is arranged at the bottom of the frame plate. The top end of the piston rod of the hydraulic oil cylinder is connected with the front end of the frame plate. Locking device. The hydraulic rotary adjustment mechanism of the present invention has a reasonable design, is safe and reliable, is convenient and light, and has a unique self-locking device, which enables it to be self-locked after debugging, is safe and stable, and can quickly and conveniently perform motor installation and belt replacement during use. Operation, especially in the belt replacement operation, can greatly save time, reduce labor costs, increase work efficiency, and improve oil well production.

The invention discloses an airtightness test device for a fire-fighting steel cylinder, and relates to the technical field of airtightness tests for fire-fighting steel cylinders. The problem of gas leakage at the top end joint of the fire-fighting steel cylinder is solved. Specifically, the device comprises a main body box, a mounting hole is formed in the outer wall of the front surface of the main body box; the same tempered glass is arranged on the inner walls of the periphery of the mounting hole; a fixed seat is arranged on the bottom inner wall of the main body box; a self-locking mechanism is arranged in the fixed seat; sliding grooves are formed in the outer walls of the two sides of the main body box; L-shaped sliding rods are slidably connected with the inner walls of the two sliding grooves, the same connecting plate is arranged at the opposite ends of the two L-shaped sliding rods, a clamping fixing mechanism is arranged at the bottom of the connecting plate, a limiting groove is formed in the outer wall of the front face of the main body box, a fixing frame is connected with the inner wall of the limiting groove through a sealing strip, and a through hole is formed inthe outer wall of the front face of the fixing frame. The leakage problem possibly occurring at the top end of the fire-fighting steel cylinder is effectively avoided, and the effectiveness of experimental detection is improved.

The invention discloses a lifting working platform with a self-locking mechanism. The lifting working platform comprises a bottom frame, a lifting mechanism and a working platform body. The lifting mechanism comprises a lifting rail, a sliding rail and a lifting device. Clamping holes are formed in the side, close to the sliding rail, of the lifting rail; inserting blocks with one ends being usedfor being inserted into the clamping holes are hinged to the sliding rail; a limiting device is arranged on the sliding rail; and the inserting blocks are matched with the lifting rail under the effect of the limiting device to support the sliding rail. Compared with the prior art, the lifting working platform is advantageous in that the inserting blocks are hinged to the sliding rail and automatically inserted into the clamping holes in the lifting rail in the lifting process of the sliding rail, and the swing ranges of the ends, inserted into the clamping holes, of the inserting blocks are limited by the limiting device so that during height adjustment of the working platform body, the lifting mechanism can be automatically locked in the way that the inserting blocks are inserted into the clamping holes through, the sliding rail is prevented from downwards sliding, the safety of the working platform body is guaranteed, the steps of manual hole calibration and inserting of locking plugs into locking holes and inserting holes are omitted, thus lifting of the lifting mechanism is quicker and more convenient, and using by construction personnel is facilitated.

The invention relates to a folding electric wheelchair, aiming at solving the problems that in the prior art, the structural stability of the product is poor, the operability is poor, and the potential safety hazards are high. The folding electric wheelchair comprises a wheelchair bracket, the wheelchair bracket comprises a backrest frame, the backrest frame comprises a connecting part and a supporting part, and the folding electric wheelchair further comprises a seat frame, front wheel carriers and lower connecting rods; the supporting part, the seat frame, the front wheel carriers and the lower connecting rods are connected end to end in sequence to form parallelogram rod groups on two sides of the wheelchair, middle support rods are horizontally mounted at the nodes of the parallelogramrod groups on two sides, telescopic diagonal rods for maintaining the stability of the quadrilateral structure are further mounted at the positions of the diagonal lines of the parallelogram, and twoends of the telescopic diagonal rods are mounted on the corresponding middle support rods. The folding electric wheelchair has the advantages that the wheelchair realizing relatively independent functions and being convenient to fold is obtained, a series of mechanisms convenient for integral adjustment and self-locking are mounted on the wheelchair, while the stability of the whole machine is not influenced, the integral quality of the product is improved.

The invention discloses a cooking utensil. The cooking utensil comprises a base (200) and a cover (100), wherein the cover is mounted to the base in an openable and closeable manner and also in a pivoting manner, a pivoting connecting part between the base and the cover is provided with a pivoting spring (1), and the far ends, relative to the pivoting connecting part, of the base and the cover areprovided with a magnetic attracting locking assembly used for magnetically opening and closing the cover. Preferably, the magnetic attracting locking assembly comprises a magnet (3) and an electromagnet loop with an iron mandrel (4), one of the magnet and the electromagnet loop is arranged at the far end of the base, the other of the magnet and the electromagnet loop is arranged at the far end ofthe cover, and the magnet locks the cover by magnetically attracting the iron mandrel. The magnetic attracting locking assembly is simple in principle and structure, low in cost, and convenient to operate by a user, and the appearance of the product is nearly not influenced when the assembly is assembled to the product.

The invention relates to a high rope descent control device, which comprises a box body, a brake wheel, an elastic brake mechanism, a rope, and a rope winding and pay-off device for adjusting the rope pay-off speed. The brake wheel is vertically arranged in the box body; a wheel shaft penetrating through the brake wheel is axially arranged in the middle part of the brake wheel; two ends of the wheel shaft are arranged on two side walls of the box body; the wheel shaft can rotate relative to the side walls of the box body, and can move up and down along the side walls of the box body; friction brake parts are symmetrically arranged on inner walls at two sides of the box body; when the brake wheel moves up and down, two side end faces of the brake wheel can press against or separate from the inner sides of the two friction brake parts; the elastic brake mechanism is arranged in the box body, is located under the brake wheel, and is movably connected with the elastic brake wheel; the rope winding and pay-off device is arranged on the box body; and one end of the rope penetrates through an outlet of the rope and then winds in the rope winding and pay-off device. The high rope descent control device has the advantages of simple structure, convenience in use, good slow descent effect, high safety factor, small volume, light weight, and simplicity in operation.

The invention relates to the technical field of nitrogen circulating devices, in particular to a nitrogen-based atmosphere recycling device in a gas quenching process. The device comprises a high-temperature furnace, wherein a control box is arranged on one side of the high-temperature furnace, a sealing mechanism is mounted on the high-temperature furnace, and a nitrogen mechanism, a gas supply mechanism and a medium gas mechanism are connected between the control box and the high-temperature furnace. Through the arrangement of the sealing mechanism, a high-temperature furnace door is conveniently driven to be self-locked, opening is convenient, meanwhile, the gas sealing performance of the high-temperature furnace is improved, and gas leakage is avoided; and through the arrangement of the nitrogen mechanism, the gas supply mechanism and the medium gas mechanism, the corresponding gas can be conveniently recycled by utilizing the density characteristic of the gas, the gas use cost of heat treatment is reduced, and resources are saved.

The invention relates to the technical field of intelligent electric appliances, in particular to an air conditioner and an air outlet structure for the air conditioner. The air conditioner and the air outlet structure for the air conditioner aim at solving the problem that an existing air outlet structure of an air conditioner is not ideal in air guiding effect. In order to achieve the purpose, the air outlet structure for the air conditioner comprises an air outlet frame, an air guiding assembly and a push-pull assembly, and an air outlet is formed in the air outlet frame; the air guiding assembly comprises at least one air guiding panel, the air guiding panels can cover the air outlet when in a closed state, and the total area of the air guiding panels is larger than or equal to the area of the face where the air outlet is located; and the push-pull assembly is arranged on the air outlet frame, connected with the air guiding panels and used for driving the air guiding panels to stretch and retract relative to the air outlet, and therefore opening or closing of the air outlet is achieved, the total area of the air guiding assembly is increased, the air guiding effect is improved, the appearance of an air duct machine is more attractive and simpler, and the visual effect of a user is improved.

The invention discloses an oil collecting device. The oil collecting device comprises an oil cup body with an opening in the top end, and is characterized in that the two ends of the oil cup body in the length direction are open; and the oil collecting device further comprises plug mechanisms detachably arranged at the openings in the two ends of the oil cup body as well as hooks used for being connected with an external installation foundation, wherein the two ends of the oil cup body are sealed through the plug mechanisms, and the plug mechanisms are clamped into the hooks. The invention further discloses a range hood applying the oil collecting device. Compared with the prior art, the oil collecting device and range hood applying the same has the advantages that the two ends of the oilcup body are blocked through the detachable plug mechanisms, the plug mechanisms cooperate with the hooks so that the oil collecting device can be conveniently installed, the installation mode is simple and reliable, and installation failure caused by insertion pieces can be avoided.

The invention discloses a material transportation robot with high bearing capacity. The material transportation robot comprises a base, wherein the middle part of the base is connected with a rotating frame body through a shaft; a rotating motor is arranged in the base, and the rotating motor is connected with the shaft of the rotating frame body through a gear transmission mechanism; the interior of the rotating frame body is connected with a main support arm through a shaft; a connecting shaft at one side of the main support arm is connected with a worm gear through a key; the rotating frame body at the lower side of the worm gear is connected with a worm through a bearing; the rotating frame body at one side of the worm is connected with a main support arm motor; the upper end of the main support arm is connected with an auxiliary support arm through a shaft; and one end of the auxiliary support arm is connected with a rotating block through a shaft. According to the material transportation robot with the high bearing capacity, the bearing capacity of the robot can be conveniently improved under the condition that a motor with low power is used, so that the material transportation robot can transport heavy materials, all movement joint parts can be conveniently self-locked, and the working safety of the material transportation robot is improved.

The invention discloses an energy-saving water knife glass cutter. The energy-saving water knife glass cutter comprises a transverse rod and a cutting operation table, wherein a water knife body is arranged below the transverse rod, a toothed plate is connected above the water knife body, a rotating gear is connected with the outer portion of the toothed plate, a center of the rotating gear is sleeved with a rotating shaft, a rotating motor is connected with the outer portion of the rotating shaft, the rotating motor is installed at the outer portion of the transverse rod, supporting rods arearranged in the transverse rod, the supporting rods are connected with the left and right sides of the toothed plate, a connection base is arranged below the transverse rod, a sliding block is arranged on the bottom of the connection base, a lead screw is sleeved with the sliding block, and a driving motor is connected with the outer portion of the lead screw at the same time. According to the energy-saving water knife glass cutter, through movement of the water knife body, cut glass positions are conveniently free from limitation and fixation, and when the toothed plate moves, through slidingconnection between the toothed plate and the supporting rods, the toothed plate is used as a sliding supporting point in the transverse rod.

The invention discloses an inspection robot for a power transmission line. The inspection robot comprises a robot body, a control device and a detecting device, wherein a signal output end of the detecting device is connected with an input end of the control device; an output end of the control device is connected with a controlled end of each controlled part of the robot body; the robot body comprises a fixed bracket; three sets of motion detecting units are arranged on the fixed bracket in parallel; each set of motion detecting units separately comprises an obstacle-crossing mechanical arm, an up-and-down motion mechanism for driving the obstacle-crossing mechanical arm to move up and down and a rotary mechanism for driving the up-and-down motion mechanism and the obstacle-crossing mechanical arm to horizontally rotate; the rotary mechanism is fixedly arranged on the fixed bracket; the up-and-down motion mechanism is arranged on the rotary mechanism; and the obstacle-crossing mechanical arm is fixedly arranged at the top end of the up-and-down motion mechanism. The inspection robot not only can realize daily inspection of the power transmission line, further can realize obstacle-crossing inspection, improves inspection precision and accuracy of the power transmission line, and provides guarantee for safety operation of the power transmission line.

The invention relates to a fastening method suitable for a part with a hole and a device thereof, which belong to the technical field of machining clamps. The device comprises a tensioning pin and a quick tensioning sleeve; the quick tensioning sleeve comprises a shell, a self-locking unit, a magnet pull rod, an outer spring and an outer end cover; the magnet pull rod is arranged at the bottom of the self-locking unit; the bottom end of the magnet pull rod is connected with the outer end cover via the outer spring; the shell is sleeved outside the self-locking unit, the magnet pull rod, the outer spring and the outer end cover; and the tensioning pin is inserted into the quick tensioning sleeve to lock via the self-locking unit. After the device is utilized, the tensioning pin is fixed by effectively matching a steel ball in the self-locking unit with the tensioning pin so as to quickly fix the part on the clamp; the matching of the steel ball and the tensioning pin can be fully automatically realized through the magnet pull rod and a spring component; and moreover, self-locking and unlocking can be conveniently realized by means of the magnetic control of the magnet pull rod; therefore, the method and the device are suitable for large-scale production and machining requirements.

The invention discloses an airtight test device for fire-fighting steel cylinders, and relates to the technical field of air-tightness tests for fire-fighting steel cylinders; in order to solve the problem of gas leakage at the joints at the top of the fire-fighting steel cylinders; it specifically includes a main body box, and the front outer wall of the main body box is opened with a The installation hole, and the inner wall around the installation hole is provided with the same tempered glass, the bottom inner wall of the main box is provided with a fixing seat, and a self-locking mechanism is arranged inside the fixing seat, and the outer walls of both sides of the main box are provided with chute, two The inner wall of the chute is slidably connected with L-shaped sliding rods, and the opposite ends of the two L-shaped sliding rods are provided with the same connecting plate, and the bottom of the connecting plate is provided with a clamping and fixing mechanism, and the front outer wall of the main box has a limiting slot. And the inner wall of the limiting groove is connected with the fixing frame through the sealing strip, and the front outer wall of the fixing frame is provided with a through hole. The invention effectively avoids the possible leakage problem at the top of the fire cylinder, and improves the effectiveness of experimental detection.

A precise axial centering device for wire harnesses, the center of the supporting fixed plate is provided with a wire passing hole B; the clamping jaw seat is fixedly connected to the supporting fixed plate, and a wire passing hole A is opened at the center of its axis, and the circumferential direction of the upper part is uniform A plurality of radial chute A and a plurality of radial chute B are opened on the ground; the mechanical jaw is slidably assembled in the radial chute A, and the middle and left parts of the lower end are respectively connected with a longitudinal stop arm and a cam bearing follower. The longitudinal stop arm and the inner end of the radial chute B are connected by a spring; the rotating sleeve is sleeved outside the jaw seat through the axial cavity, and the inner side of the upper part of the rotating sleeve is rollingly matched with the roller of the cam follower ;The inner circumference of the rotating sleeve is provided with a plurality of lift chutes for rolling in and out of the roller; one end of the counterclockwise side of the lift chute is provided with a guiding bevel, and one end of the clockwise side is provided with a limiting concave edge ; The cover plate is affixed to the upper end of the jaw base through connecting bolts. The device can accurately locate the axis of the wire harness, which can effectively reduce labor costs.

The invention discloses a bankbook issuing device, and belongs to the technical field of office equipment. The device comprises a rack, a bankbook storage box installed on the rack, a bankbook pressing device, a bankbook limiting mechanism, and a bankbook pull-out mechanism. A bankbook storage cavity is formed in the bankbook storage box, and a bankbook outlet is formed in the bankbook storage box; the bankbook pressing device is installed on the rack and extends into the bankbook storage cavity, and the bankbook pressing device is arranged on the upper side of the bankbook stored in the storage cavity; the bankbook limiting mechanism is installed on the bankbook storage box close to the bankbook outlet, the lower end of the bankbook limiting mechanism extends towards the bankbook outlet to form an extending end, and a bankbook passing groove allowing a single bankbook to pass through is defined and formed between the extending end of the bankbook limiting mechanism and the bottom of the bankbook storage cavity; and the bankbook pull-out mechanism is mounted on the rack and extends into the bankbook storage box, and the bankbook pull-out mechanism cooperates with the bankbook pressing device to pull the bankbook out of the bankbook storage box from the bankbook outlet. According to the bankbook issuing device, the bankbook issuing workload can be reduced, and the bankbook issuing efficiency is improved.

The invention relates to a folding type multifunctional drawing table. The folding type multifunctional drawing table comprises an upper table top, a lower table top, an upper table leg, a table top incline mechanism, a lower table leg, a table top lifting and dropping mechanism, a tool box and a tool box self-locking mechanism; the upper table top is connected to the lower table top in a pivoted mode, the front end of the lower table top is hinged to the upper table leg, and the table top incline mechanism is installed on the upper table leg and connected to the bottom of the lower table top in an abutting mode; the upper table leg is inserted into the lower table leg and can lift and drop along the lower table leg; the table top lifting and dropping mechanism is installed on the upper table leg and the lower table leg; the lower end of the tool box is hinged to the lower table leg, and the upper end of the tool box is connected to the lower table leg; the tool box self-locking mechanism is installed on the tool box; a clamping board is arranged on the lower table leg; the tool box self-locking mechanism is connected with the clamping board in a clamping mode. According to the folding type multifunctional drawing table, the height can be lifted and dropped freely, the angel and size of the table top can be adjusted freely, a user can keep the most comfortable posture in use, the fatigue is favorable to relief, the working efficiency of designing and drawing is improved, and the table has good practicability.

The invention provides a double-swing-door device and a refrigerator. The double-swing-door device comprises a first assembly portion and a second assembly portion. The first assembly portion comprises a first locking portion, a first connecting rod, a first sliding block and a first connecting shaft, wherein the first locking portion, the first connecting rod and the first sliding block are connected in sequence, and the first locking portion is fixed to the refrigerator through the first connecting shaft and rotates around the first connecting shaft in order to open or close doors of the refrigerator. The second assembly portion and the first assembly portion are arranged in a mirror image mode. The second assembly portion comprises a second locking portion, a second connecting rod, a second sliding block and a second connecting shaft, wherein the second locking portion, the second connecting rod and the second sliding block are connected in sequence, and the second locking portion is fixed to the refrigerator through the second connecting shaft and rotates around the second connecting shaft in order to open or close the doors of the refrigerator. The double-swing-door device can be arranged on the doors of the refrigerator, and can also be arranged on a refrigerator body of the refrigerator, thereby achieving a leftwards and rightwards interactive door opening function for the refrigerator.