41results about How to "Avoid abnormal noise" patented technology

A nonwoven fabric laminate for foam molding according to the present invention is characterized in that: a reinforcement layer is provided on at least one surface of a dense layer; the dense layer is a nonwoven fabric having a bulk density of greater than or equal to 0.1g / cm3 and comprising polyester-based long fibers that have a fiber diameter of 10 - 30[mu]m and that are fused to each other by means of melt blowing; the reinforcement layer is a nonwoven fabric comprising polyester-based short fibers that have a fiber diameter of 10 - 30[mu]m; and the laminate is obtained by a needle punch interlacing the dense layer and the reinforcement layer. The nonwoven fabric laminate for foam molding according to the present invention is capable of maintaining the density inside a seat even after heating, expansion, and shrinkage. The nonwoven fabric has superior mold-following properties during heating, expansion, and shrinkage. The nonwoven fabric laminate can be processed into complex shapes. The nonwoven fabric laminate can be processed well into shapes suitable to molds for foam-molded bodies, and the like, without cutting, and a sufficient density can be maintained on all surfaces of the nonwoven fabric laminate.

The invention discloses an automobile glass guide rail. The automobile glass guide rail comprises an upper guide rail and a lower guide rail. The lower guide rail is provided with U-shaped columns in the length direction, and the U-shaped columns are provided with U-shaped grooves. The upper guide rail is provided with insertion plates matched with the U-shaped grooves, a plurality of insertion blocks are arranged in the length direction of the insertion plates, and insertion holes matched with the insertion blocks are formed in the U-shaped grooves. When the insertion plates are inserted into the U-shaped grooves, the insertion blocks are inserted into the insertion holes. According to the invention, the insertion plates of the upper guide rail are inserted into the U-shaped grooves of the lower guide rail, the insertion blocks of the upper guide rail are inserted into the insertion holes of the lower guide rail, the upper guide rail and the lower guide rail are easily matched, and installation is convenient and fast. Through fastening of the insertion blocks and the insertion holes and matching of the insertion plates and the U-shaped grooves, the upper guide rail and the lower guide rail can be matched more closely, and abnormal sounds caused when automobiles vibrate after installation are avoided.

The invention discloses a method for controlling P-gear parking used for a vehicle. The method comprises the following steps: when a vehicle is on a ramp, obtaining current gradient of the ramp where the vehicle is on; according to the current gradient of the ramp where the vehicle is on, calculating delayable locking time when the vehicle is shifted in a P-gear; in the delayable locking time, controlling an electronic parking brake (EPB) system of the vehicle to operate, and after the EPB system operates, controlling the vehicle to execute P-gear locking operation. The method for controlling P-gear parking can reduce acting force between a P-gear lock cylinder and a P-gear lock slot when a vehicle parks on a ramp, so as to prevent abnormal sound caused by P-gear unlocking when the vehicle parks on the ramp. The invention also discloses a system for controlling P-gear parking used for a vehicle, and the vehicle with the P-gear parking control system.

The invention relates to the technical field of hydraulic equipment and discloses a hydraulic cylinder, a hydraulic driving system and an engineering machine. The hydraulic cylinder comprises a cylinder body, a piston slidably arranged inside the cylinder body, a piston rod fixedly connected to the piston, a first guiding sleeve, a second guiding sleeve and a cap. A first circumferential gap is formed between the piston rod and the inner wall of the cylinder body; the first guiding sleeve is at least partially arranged in the first circumferential gap, and a second circumferential gap is formed between the first guiding sleeve and the piston rod; the second guiding sleeve is arranged on the piston rod in a sleeving mode and at least partially located in the second circumferential gap, andmeanwhile, the second guiding sleeve is attached to the piston rod in a sealed mode and can radially float along with the piston rod relative to the first guiding sleeve; and the cap is arranged at the open end of the cylinder body in a covering mode and enables the cylinder body, the first guiding sleeve and the second guiding sleeve to be fixed to one another in the axial direction. According tothe hydraulic cylinder, the follow-up property of sealing of the guiding sleeves and the piston rod is improved, the sealing property of piston rod sealing is improved, and the side-loading resistingcapability and the low-speed dynamic property of the hydraulic cylinder are improved.

The invention discloses a door check, and relates to the technical field of automobile parts. The door check comprises a limiting support, a limiting pull plate and a limiting assembly, wherein the limiting assembly is fixedly connected to a vehicle door, one end of the limiting support is connected to a vehicle body, the other end of the limiting pull plate penetrates through the limiting assembly and then extends into the space inside the vehicle door, the limiting assembly is used for limiting the limiting pull plate, and the opening-closing angle of the vehicle door is fixed. According to the door check, the movement noise of the limiting pull plate can be eliminated when the vehicle door is opened and closed, the influence of rainwater corrosion and the influence of bad effects caused by internal abrasion of the door check are avoided, and the service life of a door check assembly is prolonged.

The invention discloses a mounting support of an automotive rear bumper and a rear collision beam. The mounting support comprises a vertical stamping part and a horizontal stamping part. The horizontal stamping part is arranged at the lower end of the vertical stamping part and integrated with the vertical stamping part. A bumper mounting nut is arranged on the horizontal stamping part, and a rear collision beam mounting bolt is welded on the vertical stamping part. The mounting support can be used for mounting the automotive rear bumper and the rear collision beam, the strength of the mounting support is improved, and mounting efficiency of the rear collision beam is improved.

The invention discloses a shock-absorbing pedal of a motorcycle. In the shock-absorbing pedal, a rear connecting tube consists of an upper connecting tube and a lower connecting tube, wherein, the rear part of the lower connecting tube turns up to form an inclined section, and the lower end of the upper connecting tube is sheathed into the inclined section; a first spring is arranged in the inclined section of the lower connecting tube, the lower end of the first spring is abutted with a first locating plate fixed in the inclined section, and the upper end of the first spring is abutted with a second locating plate on the bottom end of the upper connecting tube; and a second spring is sheathed on the upper connecting tube, the lower end of the second spring is abutted with the second locating plate, and the upper end of the second spring is abutted with an inner flange at an upper port of the inclined section of the lower connecting tube. In the invention, shock of the foot pedal is lowered during the running process of the motorcycle by virtue of elasticity of the springs, which effectively improves riding comfortability; and the shock-absorbing pedal has the characteristics of artful design, simple structure, easy reconstruction, low reconstruction cost and the like, and can be widely applied to various two-wheeled motorcycles.

The invention discloses a vehicle door limiter, which relates to the technical field of automobile parts. The limiter includes a limit bracket, a limit pull plate and a limit assembly, the limit assembly is fixedly connected with the door, one end of the limit bracket is connected with the vehicle body, and the other end of the limit pull plate One end extends into the space inside the car door after passing through the limit assembly, and the limit assembly is used to limit the limit pull plate so that the opening and closing angle of the car door is fixed. The door stopper can eliminate the movement noise of the limiter pull plate when opening and closing the car door, avoid the influence of rainwater corrosion and adverse effects caused by internal wear of the stopper, and prolong the service life of the door stopper assembly.