32results about How to "Not easy to make noise" patented technology

The invention discloses a structure of a novel high-precision eccentric shaft. An eccentric shaft mechanism is provided with two keys; the two keys are respectively arranged in the key slots at the two ends of an eccentric shaft; two eccentric sleeves are symmetrically arranged in the middle of the eccentric shaft from the two ends of the eccentric shaft respectively; the left eccentric sleeve and the right eccentric sleeve are connected together by a bolt; when the eccentric distance needs to be adjusted, the bolt is loosened, so that the left eccentric sleeve and the right eccentric sleeve are separated from the keys, and the left eccentric sleeve and the right eccentric sleeve are rotated at the same angle relative to the eccentric shaft at the same time; and because the eccentric distance O1-O3 is related to the included angles O1, O2 and O3, the eccentric distance can be adjusted by only adjusting the included angles O1, O2 and O3.

The invention provides a protective sleeve for a folding screen mobile terminal, which is used for protecting the folding screen mobile terminal, and is characterized in that the protective sleeve comprises a hard rubber part and a soft rubber part, and the soft rubber part is arranged corresponding to the position of a bending part of the folding screen mobile terminal. Beneficial effects of thedevice are that: the device is convenient to use. The mobile terminal protection sleeve is designed to comprise the hard rubber part and the soft rubber part which are integrally formed. The soft rubber part is arranged corresponding to the position of the bending part of the folding screen mobile terminal, after the mobile terminal is installed in the protective sleeve, when the screen is folded,the soft rubber part of the protective sleeve is bent, and the hard rubber part is correspondingly combined and overlapped to complete folding of the protective sleeve.

The invention provides a lifting device of an automobile cup holder supporting cover, and belongs to the technical field of automobile cup holders. The lifting device comprises a supporting cover, and further comprises a linkage mechanism, the linkage mechanism comprises a synchronous transmission shaft, the synchronous transmission shaft is rotatably connected with the supporting cover, and first bevel gears are arranged at the two ends of the synchronous transmission shaft; the driving mechanism comprises two lifting rotating shafts, the two lifting rotating shafts are rotatably connected with the supporting cover, the two lifting rotating shafts are provided with second bevel gears, the two ends of the two lifting rotating shafts are provided with driving gears, and the two second bevel gears are meshed with the two first bevel gears respectively; the utility model further provides an automobile cup holder which comprises the lifting device and further comprises: a cup base which is provided with a cup cavity, wherein the supporting cover is arranged in the cup cavity in a lifting mode; and racks which are connected with the cup base, wherein the number of the racks is four, and the four driving gears are engaged with the four racks correspondingly. The lifting device has the beneficial effects that: the lifting device is ingenious in structure, no abnormal sound is generated, and the use experience of the automobile cup holder is good.

The invention provides a fan oscillating mechanism and a fan with the fan oscillating mechanism, and belongs to the field of electrical appliances. The fan oscillating mechanism comprises a gear box, a motor, a crank wheel and a connecting rod, wherein a worm, a force overcoming structure and an output shaft are arranged in the gear box; the force overcoming structure comprises a force overcoming cylinder and a force overcoming shaft; the force overcoming shaft extends into the force overcoming cylinder; the force overcoming cylinder is connected with the force overcoming shaft through a force overcoming bulge and a force overcoming recess; the force overcoming structure is matched with the output shaft; the output shaft is connected with the crank wheel; a motor supporting shaft is arranged on the motor and connected with a motor supporting shaft sleeve; the crank wheel is connected with the motor supporting shaft sleeve through the connecting rod. When the fan oscillating mechanism works, the power of the motor is driven by the gear box to drive the crank wheel to rotate, so that the motor supporting shaft rotates, and oscillation of the fan can be driven thereby. When the oscillation of the fan is blocked, the worm can be driven accurately by the adoption of the novel force overcoming structure, so that the problem of noise is well solved.

The invention discloses a folding door applied to a slope, which comprises a door frame, a door leaf, a transmission mechanism and a track groove placed on the slope. The bottom of the door leaf is set at a corresponding angle according to the height of the slope. The door leaf, the side door leaf is connected to the middle door leaf through a hinge, and the other side is connected to the door frame through a rotating shaft. The transmission mechanism includes a guide wheel, a bearing seat and a counterweight. The optical axis moves up and down and rotates. The guide wheel is placed in the track groove and connected to the optical axis through bolts. The other end of the optical axis is connected to the counterweight. The upward tension of the optical axis is applied by the counterweight to drive the guide wheel Keep fit and slide on the upper end of the track groove; through the transmission mechanism, the folding door can move on the slope, and the center of gravity of the door body acts on the upper end of the track groove evenly, so that the folding of the door leaf is very smooth, and it is not easy to generate noise.

The invention provides a lifting device for a cup holder cover of an automobile, belonging to the technical field of the automobile cup holder, including the cover, and further comprising: a linkage mechanism includes a synchronous transmission shaft, the synchronous transmission shaft is rotatably connected to the cover, and the synchronous transmission shaft Both ends are provided with a first bevel gear; the driving mechanism includes two lifting shafts, both of which are rotatably connected to the support cover, both are provided with a second bevel gear, and the two lifting shafts are Both ends are provided with driving gears, and the two second bevel gears are meshed with the two first bevel gears respectively; an automobile cup holder is also provided, including a lifting device, and further comprising: the cup holder is provided with a cup cavity, and the cover can be The lifting device is arranged in the cup cavity; the rack is connected with the cup seat, the number of racks is set to four, and the four driving gears are respectively meshed with the four racks. The beneficial effects of the invention are as follows: the lifting device has an ingenious structure, does not produce abnormal noise, and has a better use experience of the car cup holder.

The invention discloses a simple buffer garbage can. The simple buffer garbage can comprises a can body and a can cover; the can cover is connected to the top of the can body through a hinge shaft; a control cavity is formed in the bottom wall of the can body; an ejector rod channel is formed in the side wall of the can body; a pedal is arranged in the control cavity; an ejector rod is arranged in the ejector rod channel; the bottom end of the ejector rod is connected with the pedal; a rotating shaft is arranged in the control cavity, and is provided with three convex rods; the middle part of the pedal is connected into the control cavity through a pin shaft; the inner side end of the pedal is connected with one cam rod through a shaft rod; the bottom of the ejector rod is connected to another convex rod through a shaft pin; a U-shaped buffer tank is formed in the bottom wall of the control cavity; a buffer ejector rod is arranged in the U-shaped buffer tank; a buffer spring is arranged between the end part of the buffer ejector rod and the end wall of the control cavity; and the outer side end of the buffer ejector rod is butted against the third convex rod. The simple buffer garbage can is reasonable in structural setting, solves the technical defect of generating noise in covering of the garbage can in the prior art, and is excellent in use stability and high in adaptability.

The invention discloses a fan. The fan comprises a hub and a plurality of blades arranged around the hub at intervals and extended outwards. Each of the blades comprises a first section provided with a first side and a second side extended outwards from the hub, and a second section provided with a third side and a fourth side extended outwards from the hub, wherein the second side and the third side are jointed together so that the first section and the second section form an included angle on a circumferential cross section. In the way, the wind amount and the wind pressure of the fan are in optimum balance and the comprehensive performances of the fan are improved.

The invention provides a heavy-load conical hinge. The heavy-load conical hinge comprises two hinged blades, a conical hinge pin, nylon pin sleeves and pin caps. Connecting pieces of the two blades are oppositely and coaxially arranged and internally provided with the nylon pin sleeves respectively, and skirt parts of the nylon pin sleeves are oppositely arranged; a conical part of the conical hinge pin is inserted into pin holes of the two oppositely-arranged nylon pin sleeves, and the inner walls of the pin holes are tightly attached to the surface of the conical hinge pin; the upper end face and the lower end face of an annular part of the conical hinge pin abut against the skirt parts of the two nylon pin sleeves respectively; the pin caps are packaged at the two ends of the conical hinge pin. By means of the heavy-load conical hinge, heavy-load hinged connection can be achieved, and no noise exists during movement.

The invention discloses a fan. The fan comprises a hub and a plurality of blades arranged around the hub at intervals and extended outwards. Each of the blades comprises a first section provided with a first side and a second side extended outwards from the hub, and a second section provided with a third side and a fourth side extended outwards from the hub, wherein the second side and the third side are jointed together so that the first section and the second section form an included angle on a circumferential cross section. In the way, the wind amount and the wind pressure of the fan are in optimum balance and the comprehensive performances of the fan are improved.