50results about How to "Pop up automatically" patented technology

The invention discloses a material receiving robot for stamping equipment. The robot comprises a base, and one side of the top of the base is fixedly connected with a box body. The top of the inner wall of the box body is fixedly connected with a stabilizing block. A sliding rod is fixedly connected between the bottom of the stabilizing block and the bottom of the inner wall of the box body. The surface of the sliding rod is connected with a sliding block in a sliding mode. A first spring is fixedly connected with the surface of the sliding rod, and is positioned between the bottom of the stabilizing block and the top of the sliding block. The right side of the sliding block is fixedly connected with a material receiving plate. The invention relates to the technical field of stamping equipment. Through the cooperation arrangement of a supporting rod, a tooth plate, a gear, a second motor, a material pushing rod, a material pushing block and a second spring, the material receiving robotfor the stamping equipment realizes the purpose of pushing and taking a workpiece by a stamping die after stamping, avoids the dangerous operation that an operator needs to take the workpiece out from the stamping die, lowers the probability of stamping equipment accident, and increases the production efficiency.

The invention discloses a quick clamping mechanism. The quick clamping mechanism comprises an output shaft which is used for mounting a tool accessory and forms a locking slotted hole which passes through the internal wall of the output shaft, a locking component arranged in the locking slotted hole, a bushing block sleeved on the output shaft, and a first energy storing component acted on the bushing block; the quick clamping mechanism further comprises a moving component arranged in the locking slotted hole; and the moving component is in contact with the bushing block, and can exert radial component force and axial component force to the bushing block when the tool accessory is inserted. The quick clamping mechanism has the advantages of ingenuity in structure, convenience in achievement, and capability of effectively achieving the operation of clamping or unlocking a working accessory through one hand; and the quick clamping mechanism brings great convenience to a user for use.

The invention relates to a full-automatic riveting station. The full-automatic riveting station comprises a rotating platform, and a material supply mechanism and a clamping table which are respectively connected through a plurality of riveting heads arranged on the rotating platform. The full-automatic riveting station further comprises two pressurizing devices, wherein the two pressurizing devices are arranged at positions respectively corresponding to the riveting heads at the position of the clamping table and the material supply mechanism, the pressurizing devices can drive the riveting heads to press towards the clamping table or the material supply mechanism, and the clamping table is driven to move through an X-axis moving module and a Y-axis moving module which are perpendicular to each other. The arrangement of the plurality of riveting heads on the rotating platform can realize the effect of sucking for feeding nuts through the riveting heads on one side and riveting the nuts into a case through the riveting heads on the other side, the riveting heads on one side suck the nuts and the riveting heads on the other side rivet the nuts when the rotating platform pauses, and then the rotating platform is rotated for an angle to perform sucking and riveting at a next time; since columns with springs are installed between top plates and a bottom plate, after a multiple-output-force cylinder or an air cylinder downwards press the riveting heads, the riveting heads can automatically spring up to facilitate downward pressing at a next time.

The invention discloses a tissue retractor used in an oral surgery, and relates to the technical field of medical instruments. The tissue retractor comprises a rectangular cylinder, wherein a fixing block is fixedly connected in the rectangular cylinder, and first small electric push rods are fixedly connected to the left side and the right side of the fixing block. According to the tissue retractor used in the oral surgery, two lower-layer protection pads are in contact with lower-row teeth of a patient, supporting rods, L-shaped rods and upper U-shaped supporting plates automatically move upwards by the aid of elastic force of springs, two upper-layer protection pads are automatically in contact with upper-row teeth of the patient, rotating screw rods are forwardly rotated to be abuttedto the supporting rods, so that the supporting rods are fixed, the supporting rods, the L-shaped rods and the upper U-shaped supporting plates do not descend, the oral cavity of the patient is opened,the tissue retractor is simple to operate and convenient to use, use requirements of a user are met, and the device can be adjusted according to the sizes of different oral cavities and has universalapplicability.

The invention discloses an automobile LED lamp assembly detection and identification machine, a detection and identification system and a detection and identification method. The detection and identification machine is designed for an automobile LED lamp semi-finished product; an LED lamp is clamped and fixed, so that power issupplied to the LED lamp. Whether the appearance, the display state, theuniformity degree, the light emitting color and the light guide silk screen of the LED lamp are qualified or not is detected and observed through the turn-on condition of the LED lamp. And through aperformance detection confirmation mechanism, a detection result of a worker is obtained, a final detection index is obtained, a final bar code or label is obtained through a printer set, and the final bar code or label is adhered to the corresponding detected LED lamp. The label is high in signal content, not easy to fall off and good in reliability.

The invention discloses an environment-friendly dustbin with a classification function. The environment-friendly dustbin with the classification function comprises a dustbin body. A transmission mechanism is arranged on the dustbin body. A pressurizing device provides moving resistance for kitchen waste to improve the squeezing force applied to the kitchen waste, so that the degree of separation of the solid kitchen waste from oil and water is improved, the content of oil and water contained in the solid kitchen waste is further decreased, it is ensured that an extremely small quantity of oiland water left in the solid kitchen waste adheres to the surface of the solid kitchen waste instead of being converged in a plastic bag, and the problems that when the plastic bag is lifted out to betransferred, the plastic bag is likely to be punctured by hard objects in the kitchen waste and leaks, and consequentially, the oil and water in the kitchen waste drop on a road, severely pollutes theenvironment and cause slipping of pedestrians, and dangers are caused are effectively avoided; and the environmental friendliness and practicability of the environment-friendly dustbin with the classification function are improved.

The invention discloses a license shooting unit of an intelligent ATM (automatic teller machine). The license shooting unit comprises a box body, a camera, a camera support, a drawer, an illumination device, a drawer locking device, an in-place switch and an automatic pop-up device; the top of the box body is provided with a shooting window; the camera is fixed to the box body through the camera support, and located over the shooting window in the top of the box body; the drawer is in sliding connection with the inner wall of the box body; the illumination device is installed in the box body; the drawer locking device, the in-place switch and the automatic pop-up device are disposed at the rear end in the box body, the rear part of the drawer is provided with a pin shaft capable of matching the drawer locking device; the in-place switch is in a linkage with the drawer locking device, and is electrically connected with the camera; and the automatic pop-up device provides a force for the drawer to pop out of the box body. The drawer can automatically pop out when a license needs to be shot, automatic shooting can be achieved when the drawer is pushed in place, and the license shooting unit is simple in structure and convenient to operate.

The invention discloses a height-adjustable LED illuminating street lamp which comprises an installation base and a hollow cylindrical street lamp post. The street lamp post is sleeved with an installation sleeve, two installation grooves are symmetrically formed in the outer side wall of the installation sleeve, LED street lamp panels are arranged in the installation grooves, tempered glass plates of the LED street lamp panels are arc plates, the bending radian of the arc plates is matched with the outer side wall of the installation sleeve, a motor is arranged in the installation base, the output end of the motor is arranged to an adjusting screw rod, one axial end of the adjusting screw rod is connected with the motor, the other axial end of the adjusting screw rod stretches into the street lamp post and is fixed to a limiting plate through a bearing, the adjusting screw rod is sleeved with an adjusting ring, the inner wall of the adjusting ring is in threaded connection with the adjusting screw rod, the outer wall of the adjusting ring is symmetrically and convexly provided with limiting rods, the side wall of the street lamp post is provided with two limiting grooves matched with the limiting rods, and the axial ends of the limiting rods penetrate through the corresponding limiting grooves and then are connected with the inner wall of the installation sleeve. By the adoption of a lifting structure, a worker can carry out overhaul conveniently, and operation is convenient.

The invention relates to a loading-riveting integrated rotary mechanism comprising a rotary platform with an axis connected with a rotary shaft, and two pressurization devices fixed on a same side of the rotary platform; the periphery of the rotary platform is provided with a plurality of rivet heads; the rivet head comprises a top plate and a bottom plate arranged on two sides of the rotary platform; the top plate and the bottom plate are connected through at least one cylinder sleeved with a spring; the cylinder penetrates the rotary platform; two ends of the spring respectively abuts against the bottom plate and the top plate; the bottom plate is provided with a rivet nozzle. The rotary platform is provided with the rivet heads so as to suck nuts for loading on one hand, and the nuts can be pressed in a housing on the other hand; when the rotary platform stops, the rivet head on one side sucks the nuts, and the rivet head on the other side rivets the nut in the same time; then a preset angle is rotated for the following suction and riveting.

The invention discloses a punching tool of an asbestos washer for an ignition electric nozzle. The punching tool comprises an outer ring cutter, an inner ring cutter, a spring and a bush. The outer ring cutter sleeves the outer side of the punching end of the inner ring cutter, one end of the outer ring cutter is fixedly connected with the inner ring cutter, a punching cavity is formed between theouter ring cutter and the inner ring cutter, and the width of the punching end of the punching cavity is the same as the thickness of the asbestos washer. The bush is slidably arranged in the punching cavity, the bush is connected with the top end of the punching cavity through the spring, a limiting device corresponding to the bush is arranged on the inner side of the outer ring cutter so as toprevent the bush from sliding out of the punching cavity, and the sliding stroke of the bush is larger than or equal to the height of the asbestos washer. The punching tool of the asbestos washer forthe ignition electric nozzle is reasonable in design structure and convenient to use and operate, when the asbestos washer is machined, an asbestos washer plate can be punched into an annular washer at a time, after the spring is punched and formed, the asbestos washer can be automatically ejected out of a combined die, and the machining efficiency is improved.

The invention discloses an over-point automatic starting rotating shaft including a fixed plate, a movable plate, a rotating shaft, a cam wheel, a recessed wheel, an elastic element and a resistance providing device. A first shaft sleeve is arranged on the fixed plate, a second shaft sleeve is arranged on the movable plate, and each of the first shaft sleeve, the second shaft sleeve, the cam wheeland the recessed wheel axially and slidably sleeves the outer side of the rotating shaft. Stop members at two ends of the rotating shaft abut against two axial ends of an integral stacked structure formed by the first shaft sleeve, the second shaft sleeve, the cam wheel and the recessed wheel, the second shaft sleeve is capable of rotating relative to the rotating shaft, one of the cam wheel andthe recessed wheel is stopped and positioned in a circumferential direction of the second shaft sleeve, and the cam wheel and the recessed wheel are in tight contact through an axial concave-convex curved surface. The resistance providing device is capable of providing resistance for rotation of the second shaft sleeve. The elastic element is capable of providing an elastic torsion force for the second shaft sleeve within a set angle range, wherein the elastic torsion force enables the movable plate to rotate in a direction away from an opening direction of the fixed plate. By using the over-point automatic starting rotating shaft, a display screen can be stably closed, and the display screen of a notebook computer can automatically bounce when being opened so as to be convenient to use.

The invention discloses a material receiving robot for stamping equipment. The robot comprises a base, and one side of the top of the base is fixedly connected with a box body. The top of the inner wall of the box body is fixedly connected with a stabilizing block. A sliding rod is fixedly connected between the bottom of the stabilizing block and the bottom of the inner wall of the box body. The surface of the sliding rod is connected with a sliding block in a sliding mode. A first spring is fixedly connected with the surface of the sliding rod, and is positioned between the bottom of the stabilizing block and the top of the sliding block. The right side of the sliding block is fixedly connected with a material receiving plate. The invention relates to the technical field of stamping equipment. Through the cooperation arrangement of a supporting rod, a tooth plate, a gear, a second motor, a material pushing rod, a material pushing block and a second spring, the material receiving robotfor the stamping equipment realizes the purpose of pushing and taking a workpiece by a stamping die after stamping, avoids the dangerous operation that an operator needs to take the workpiece out from the stamping die, lowers the probability of stamping equipment accident, and increases the production efficiency.

The invention relates to a high-precision, easily-assembled and easily-disassembled steering surface connection structure which is arranged on an electric steering engine. The connection structure comprises a steering shaft and a steering fork. One end of the steering shaft is connected with a steering engine rocker arm, and the other end of the steering shaft is provided with a steering shaft flange surface; one end of the steering fork is of a fork-shaped structure and is connected with a steering surface, the other end of the steering fork is provided with a steering fork flange surface; and the steering fork flange surface and the steering shaft flange surface are connected through a clamping groove and are firmly mounted through a fixing assembly, so that the steering engine rocker arm, the steering shaft, the steering fork and the steering surface are connected to be a whole. When the electric steering engine receives an instruction to drive the steering engine rocker arm to rotate, the steering shaft and the steering fork drive the steering surface to achieve deflection to complete predetermined actions. According to the steering surface connection structure, the disassembling and assembling process is easy to operate, the assembly manufacturability is good, the size is small, positioning precision is high, connection reliability is high, and the steering surface connection structure is suitable for connection between the electric steering engine which is small in size and large in load and the steering surface.

The invention discloses a corrugated paper cutting device with a fixed cutting distance, convenience in adjustment and a protection function. The corrugated paper cutting device comprises a pushing plate and a supporting table, the pushing plate is slidably mounted on the upper portion of one end of the supporting table, a placing clamping groove is formed in the pushing plate, a movable clampinggroove is formed in the middle of the end, close to the pushing plate, of the supporting table in a penetrating manner, a cutting knife groove is formed in the side, away from the pushing plate, of the movable clamping groove and located in the supporting table in a penetrating manner, a connecting plate is fixedly connected to the middle of the outer end of the pushing plate, an adjusting deviceis installed below the supporting table, a cutting protection device is installed above the adjusting device, and a limiting plate is installed in the adjusting device. According to the corrugated paper cutting device, corrugated paper can be rapidly cut in the using process, the cutting distances of the cut corrugated paper are the same, it is guaranteed that the specifications of the cut corrugated paper are the same, an operator can be protected in the using process, and using and adjusting are convenient and rapid.

The invention relates to the technical field of data storage, and discloses a storage device for artificial intelligence data. The storage device comprises a mounting base, two first sliding grooves and an inclined opening are formed in the inner wall of the bottom of the mounting base, a base is movably connected into the first sliding grooves, and a shell is fixedly connected to the upper surface of the base. One side of the shell is fixedly connected with a panel, one side of the panel is fixedly connected with a silica gel button, the upper surface of the base is fixedly connected with a plurality of positioning columns, the tops of the positioning columns are movably connected with a circuit board, and one side of the base is provided with a wedge-shaped groove. According to the storage device, the base and the mounting base can be tightly connected, poor contact of the storage device is prevented, the wedge-shaped block can avoid the wedge-shaped groove, so that the base is pulled out of the mounting groove, the base can automatically pop out of the mounting base, the moving-out convenience is improved, meanwhile, heat dissipation can be conducted on the circuit board, the circuit board is prevented from being damaged due to overheating, and the service life of the circuit board is prolonged.

The invention provides a bark peeling machine. The bark peeling machine comprises a frame, upper and lower two peeling mechanisms in synchronous transmission, a first motor, a second motor, funnels and discharge racks, wherein the two peeling mechanisms are the same in structure, and each peeling mechanism comprises a hob, an inclined feeding wheel, a pressing wheel, a first shaft and a second shaft; the hob, the inclined feeding wheel and the pressing wheel are distributed in a delta form and used for clamping wood located between the three components; the first shaft is parallel to the axial direction of the hob and located on one side of the inclined feeding wheel; the first shaft is engaged and linked with the inclined feeding wheel by use of a toothed surface; the second shaft is located on the outer side of the pressing wheel; a guide wheel for assisting the pressing wheel to roll slantwise is arranged on the second shaft; the hobs of the two peeling mechanisms are linked by use of a belt; the first motor is used for driving the hob in the lower side peeling mechanism; the second motor is used for driving a main power transmission shaft; the funnel for collecting sawdust is arranged on the inner side of the rolling direction of each hob; the discharge racks for discharging wood out of the machine are arranged on the side surfaces of the peeling mechanisms.

The invention relates to the technical field of washing machines and discloses a transmission mechanism and a washing machine. The transmission mechanism comprises a rotary damper, a rotating wheel and a spring assembly, wherein the rotating wheel is arranged on an output shaft of the rotary damper; the rotating wheel is in transmission connection with a feeding box of the washing machine; the spring assembly is arranged on the output shaft of the rotary damper or is arranged at the periphery of the rotary damper; when the feeding box is pushed into the washing machine, the feeding box drivesthe rotating wheel to rotate; the spring assembly is used for accumulating energy; when the feeding box is pressed again, the spring assembly can drive the rotating wheel to eject out the feeding box.By adopting the transmission mechanism and the washing machine, the problems in the prior art that structures of the spring assembly and the rotary damper are arranged separately and the volume of the occupied space is large are solved; meanwhile, the problem that the stability of a pushing-in and ejecting-out process of the feeding box is poor is also solved.

The invention discloses a filter capable of achieving popping through self inspection and a use method thereof. The filter comprises a fixed block and a movable block, a left-right through first flow channel is formed in the movable block, the left end of the first flow channel is connected with a first air inlet pipeline, and two upward through first spring grooves are formed in the left side face of the movable block; and the two first spring grooves are located at the front side and the rear side of the first flow channel correspondingly, abutting blocks are connected into the first spring grooves in an up-down sliding manner, and the abutting blocks are connected to the lower side faces of the first spring grooves through first springs. According to the filter, a filter element can be applied to filter air entering a vehicle, and a standby filter element is arranged; a detection device is arranged, when the detection device detects that the filtering effect of the filter element is too poor, the filter element can be automatically popped out, and the standby filter element is used; and a data transmission module is arranged, so that when the standby filter element is used, a vehicle owner can be notified.

The invention discloses an outdoor observation elevator car which comprises an observation elevator car body, a second supporting plate and a third supporting rod. A first handrail is fixed to the inner side of the bottom of the observation elevator car body, a second handrail is installed on the first handrail, one end of a weighing rod is fixed to the outer wall of a weighing plate, the bottom of the weighing plate is provided with a hydraulic machine, an antiskid pad is installed on the inner side of the bottom of the observation elevator car body, the observation elevator car body is provided with a first groove, the outer wall of a fragrance box is mutually connected with one side of the first groove through a first spring, a first supporting rod is fixed to the edge side of the second supporting plate, one end of a third supporting rod is fixed to the edge end of the second supporting plate, and the other end of the third supporting rod is provided with a control rod. According to the outdoor observation elevator car, the heights of the handrails arranged in the outdoor observation elevator car can be adjusted, children can be effectively protected, and meanwhile comfortablesmell can be produced in the observation elevator car.

The invention discloses a flexion and extension device based on directional wheel strip meshing transmission and a using method. A gantry support is fixed to a base, a groove penetrating to the two ends of each flexion and extension body is formed in the bottom of each flexion and extension body, and a first rack is fixed to the bottom of one side of each flexion and extension body in the groove extending direction. A plurality of positioning holes are formed in the side wall of the other side of each flexion and extension body along the extension direction of the grooves. The first flexion and extension body is connected to the gantry support in a sliding mode, the first flexion and extension body is connected into a groove of the first flexion and extension body in a sliding mode, and soon, the nth flexion and extension body is connected into a groove of the n-1th flexion and extension body in a sliding mode. Driving devices are arranged on the base in a sliding mode, first gears are connected to output shafts of the driving devices, and the first gears can be meshed with first racks on any flexion and extension body. Fastener containing boxes and screwing devices are fixed to the base, the screwing devices are located on the sides, provided with positioning holes, of the flexion and extension bodies, the fastener containing boxes are located between the screwing devices andthe flexion and extension bodies. The flexion and extension transmission effect of the flexion and extension device based on the directional wheel strip meshing transmission and the using method is better.

The invention discloses an unmanned high-altitude strapping machine with rack and pinion meshing transmission and its use method. The strapping execution structure includes a U-shaped first strapping hook, a U-shaped second strapping hook, a winding turntable and a pull rope. The first strapping The U-shaped mouth of the hook and the second binding hook is set oppositely, and one end of the first binding hook is connected with one end of the second binding hook through the first elastic member, and the first binding hook is fixed on the protruding end of the nth flexion and extension body The winding turntable is set on the gantry bracket for rotation, one end of the pull rope is wound and set on the winding turntable, and the other end is connected to the second binding hook near the first elastic member, the first binding hook and the second binding hook are provided with Groove, binding strap is installed in the groove. The binding machine of the invention has good reliability.

The invention relates to the technical field of computers, in particular to an integrated multifunctional computer network transmitter structure which comprises a mounting bottom plate frame, an arc-shaped mounting frame, a transmitter body, a mounting cover plate and the like. An arc-shaped mounting frame is connected to the top of the mounting bottom plate frame through bolts, a conveyor body is fixedly connected to the inner side of the arc-shaped mounting frame and located at the top of the mounting bottom plate frame, and a mounting cover plate is fixedly connected to the upper portion of the arc-shaped mounting frame. Through the cooperation of the slotted sliding frame and the devices on the slotted sliding frame, an operator only needs to insert a plug into the jack on the transmitter body and then loosen the plug, and the slotted sliding frame drives the plug to reciprocate so as to realize the reciprocating plugging action of the plug. Therefore, oxides possibly existing in the socket on the transmitter body due to long-term non-use can be removed, and the condition of poor contact after a plug is plugged is avoided.

The invention discloses an environment-friendly dustbin with a classification function. The environment-friendly dustbin with the classification function comprises a dustbin body. A transmission mechanism is arranged on the dustbin body. A pressurizing device provides moving resistance for kitchen waste to improve the squeezing force applied to the kitchen waste, so that the degree of separation of the solid kitchen waste from oil and water is improved, the content of oil and water contained in the solid kitchen waste is further decreased, it is ensured that an extremely small quantity of oiland water left in the solid kitchen waste adheres to the surface of the solid kitchen waste instead of being converged in a plastic bag, and the problems that when the plastic bag is lifted out to betransferred, the plastic bag is likely to be punctured by hard objects in the kitchen waste and leaks, and consequentially, the oil and water in the kitchen waste drop on a road, severely pollutes theenvironment and cause slipping of pedestrians, and dangers are caused are effectively avoided; and the environmental friendliness and practicability of the environment-friendly dustbin with the classification function are improved.

The invention discloses a tissue retracting device used in oral surgery, which relates to the technical field of medical devices, and comprises a rectangular cylinder, a fixed block is fixedly connected inside the rectangular cylinder, and both left and right sides of the fixed block are fixedly connected with A small electric push rod one. The tissue retraction device used in oral surgery, through the two lower protective pads in contact with the patient's lower teeth, relying on the elastic force of the spring to automatically move the support rod, L-shaped rod and upper U-shaped supporting plate, and make the upper layer The two protective pads are automatically in contact with the patient's upper row of teeth. By turning the rotating screw in the forward direction, the rotating screw is pressed against the support rod to fix the support rod, so that the support rod, the L-shaped rod and the upper U-shaped support plate are no longer lowered. Furthermore, the patient's oral cavity is stretched, the operation is simple, the use is convenient, and the use requirement of the user is met, and the device can be adjusted according to the size of different oral cavity, and has universal applicability.

A sterilizing keyboard, comprising a UV disinfection box and a touch keyboard; the UV disinfection box includes a shell, a control module, an ultraviolet emitting device, a sensing module, a self-blasting device, a power cable and a USB connection wire; the self-blasting The device is mainly composed of a self-bounce guide rail and a synchronous motor. The touch keyboard is fixed on the self-bounce guide rail and is connected to the control module of the ultraviolet disinfection box through a data line. The touch keyboard A switch device is arranged on the top, and the switch device controls the ejection and contraction of the self-elastic device through the control module.

The invention discloses an unmanned aerial vehicle with safe performance. The unmanned aerial vehicle comprises a rack 1, a parachute cabin 3, a flight control cabin 4, a propeller 5, a protective bracket 6 and an inductance coil 13. The unmanned aerial vehicle has safety and reliability and prevents entry into a high-voltage discharge region and is protected from damaging electric power facilities; meanwhile, the parachute can be automatically popped up in an uncontrolled state when accidents such as an air crash accident occurs, and the unmanned aerial vehicle can be widely applied to agriculture and forestry plant protection, power line patrol, petroleum pipeline patrol, territorial surveying and mapping, artificial rainfall, aerial remote sensing, rescue and relief work, geological survey, safety patrol, logistics express, medical aid, ocean remote sensing, news reports and the like.

The invention relates to an easily replaceable head brush structure comprising a head, a handle and a button. The button comprises a push portion, a connection portion and an elastic portion; one end of the elastic portion is integrally connected with the connection portion; the other end of the elastic portion is provided with an upper spring plate and a lower spring plate in a V-shaped distribution form; a joint of the push portion and the connection portion is provided with an arc bend; the upper surface of the head and the inner surface of the handle are provided with grooves respectively; the bottom of the connection portion of the button is fitted to the groove arranged in the upper surface of the head; the upper spring plate of the button is fitted to the groove arranged in the inner surface of the handle; the lower spring plate is abutted to the tail end of the groove arranged in the upper surface of the head; a fixing device is arranged inside the handle; one end of the fixing device is connected to the handle; a spring is fixed to the other end of the fixing device; the other end of the spring is abutted to the tail end of the head. The easily replaceable head brush structure is simple in structure, the button can be manufactured at very low cost, the head is convenient to replace, and combination methods are diversified.

The invention discloses a flexion and extension device based on directional wheel bar meshing transmission and a use method. The gantry bracket is fixed on the base, and the bottom of each flexion and extension body is provided with grooves extending to both ends of itself. The bottom of each flexion and extension body is along the The first rack is fixed in the extending direction of the groove, and several positioning holes are opened on the other side wall of each flexing and extending body along the extending direction of the groove; the first flexing and extending body is slidably connected to the gantry bracket, and the first flexing and extending body The sliding connection is in the groove of the first flexor-extension body, and so on, the n-th flexor-extension body is slidingly connected in the groove of the n-1 flexor-extension body; The first gear, the first gear can be meshed with the first rack on any flexion and extension body; the fastener receiving box and the screwing device are fixed on the base, and the screwing device is located on the side where the positioning hole is opened on the flexion and extension body, The fastener accommodating box is located between the screwing device and the flexion and extension body, and the flexion and extension transmission effect of the present invention is better.