32results about How to "Reduce the sound" patented technology

The invention provides a horizontally-arranged disc tool magazine, and relates to the technical field of horizontally-arranged disc tool magazines, the horizontally-arranged disc tool magazine comprises a horizontally-arranged disc tool magazine whole body, a disc tool bin is installed on the left side face of the horizontally-arranged disc tool magazine whole body, and the top of the disc tool bin extends to the right side face to be provided with a tool pushing mechanism; a cutter changing rotating mechanism is installed at the bottom of the right side face of the cutter pushing mechanism, the disc cutter bin comprises a horizontally-arranged cutter disc, the periphery of the horizontally-arranged cutter disc is fixedly connected with a cutter claw base assembly in a circular shape, the center of the horizontally-arranged cutter disc is fixedly connected with a switching disc, and a deep groove ball bearing is installed at the position, located on the inner side of the horizontally-arranged cutter disc, of the bottom of the switching disc. The inner side of the deep groove ball bearing extends to the bottom to be provided with an intermediate shaft, and a connecting plate is installed on the periphery of the intermediate shaft and located at the bottom of the horizontally-arranged cutter head. Through the design, the cost of the disc tool magazine can be reduced, the tool changing speed of the disc tool magazine can be increased, meanwhile, the installation process of the disc tool magazine can be simplified, and the convenience of installation work can be improved.

The invention discloses an arc extinction device and method based on an enhanced special linear motor, and belongs to the field of pulse power technology and application, a resistance-inductive element is bridged to the bore openings of two main rails, so that the main rails with the original open bore openings are electrically connected through the resistance-inductive element; before the armature goes out of the chamber, the resistive and inductive element and the main rail at the front end of the armature operate as a parallel branch of the armature in the circuit topology, and after the armature goes out of the chamber, the resistive and inductive element operates as a series branch between the two main rails in the circuit topology; according to the arc extinguishing method, the operation characteristics of the enhanced special linear motor are combined, the pivot rail current at the moment of out-of-chamber can be remarkably reduced or even eliminated, flash, sound and impact caused by chamber opening electric arcs are greatly reduced, and under the same operation working condition, the device concealment, safety, service life and other performance are remarkably improved.

The invention provides display equipment and a control method thereof, the display equipment comprises a display device, a human body detection device and a control device, and the human body detection device comprises a temperature sensor and a distance sensor. The control device is specifically configured to determine whether a human body exists on the display side of the display device according to the object position data from the distance sensor and the temperature data from the temperature sensor, and control the display device to display a picture. The object position data from the distance sensor and the temperature data from the infrared sensor can be combined in the display equipment, and whether the human body exists on the display side of the display device or not is jointly determined in a fusion processing mode, so that the accuracy rate of detecting the human body is increased, and the use experience of the display equipment is improved.

The invention relates to the technical field of elevators, and discloses an elevator car interior protection structure based on multi-dimensional buffering, which comprises four groups of first splicing devices, two groups of second splicing plates and eight groups of third splicing plates, the first splicing devices comprise a plurality of groups of first splicing plates, and connecting grooves are formed in the front and rear sides of the plurality of groups of first splicing plates; a first hinge is arranged in a connecting groove of the first splicing plate, a plurality of sets of first connecting devices are connected between the second splicing plates and the third splicing plates, the first splicing devices, the two sets of second splicing plates, the eight sets of third splicing plates and the first connecting devices are matched with screw blocks, so that the device can be quickly assembled; and meanwhile, field processing is not needed, the upper side of the second splicing plate on the front side is movably connected with a turning plate, the device does not need to be fixed to the inner wall of an elevator car after being installed, therefore, rigid connection with an elevator is not needed, and the installation speed and efficiency of the device are improved through the method.

The utility model relates to the field of microswitches, in particular to a mute type microswitch. The problems that noise is generated due to friction, collision and vibration between mechanical structures when an existing microswitch is switched on and off, and noise disturbance is easily caused in special occasions such as libraries and hospitals are solved. Compared with a traditional microswitch, the microswitch comprises the main body assembly, the sealing assembly and the sound insulation assembly, and the two groups of symmetrically arranged silencers are arranged in the shell, so that the silencing effect can be achieved, the sound generated in the working process of the internal structure can be greatly weakened, and the service life of the microswitch is prolonged. The damping modules are arranged on the normally-closed contact and the normally-open contact, so that the damping effect can be achieved in the vibration process of the normally-closed contact and the normally-open contact, noise is reduced by reducing the amplitude, the sound insulation assembly can conduct sound insulation, and under the multiple sound insulation and silencing effects of the silencer and the sound insulation plate box sound insulation assembly, the sound insulation effect of the normally-closed contact and the normally-open contact is improved. And noise is not easy to generate in the working process.

The invention relates to the technical field of hospital management systems, and particularly discloses a ward round device and system for a hospital, and the system comprises an information display module which is used for storing the inputted basic information of a patient; the data acquisition module is used for acquiring the basic information of the patient from the information display module after entering a preset range, and is also used for receiving the input condition information of the patient; the data processing module is used for receiving the patient basic information and the patient condition information sent by the data acquisition module, analyzing the in-place condition of the patient and generating a ward round result; and the data visualization module is used for generating a patient in-place condition visualization display interface according to the ward round result. By the adoption of the technical scheme, disturbance to the patient in the ward round process can be effectively reduced.

The utility model discloses a high-current-carrying fireproof bus for a computing center, which is characterized in that the high-current-carrying fireproof bus comprises a shell and a conducting bar, the shell is of a split structure and comprises a U-shaped bottom shell and a U-shaped cover plate, the conducting bar is installed in the bottom shell, the upper end face of the cover plate is provided with a first ventilation hole, and the two sides of the first ventilation hole are provided with installation holes; a movable blocking piece is arranged at the first ventilation hole and comprises an upper baffle and a lower baffle, the upper baffle and the lower baffle are connected through two connecting columns, the two connecting columns are movably arranged in the mounting holes in a penetrating mode, the upper baffle is located above the cover plate, and the lower baffle is located below the cover plate; the upper baffle and the lower baffle are provided with threaded holes used for installing the connecting column, the connecting column is sleeved with a spring, one end of the spring abuts against the upper end face of the base plate, the other end of the spring abuts against the lower end face of the cover plate, and the connecting column is sleeved with the base plate which is located above the lower baffle.

The utility model discloses a sound-gathering sound box, and aims to solve the technical problems that the sound box is large in volume propagation range, causes noise pollution to others and is not friendly to the ecological environment. The device comprises a sound production unit and a sound gathering plate group, the sound gathering plate group comprises a plurality of sound gathering plates, the sound production unit comprises a sound production part, the sound gathering plates are arranged around the sound production part in a trumpet-shaped spiral winding mode, and the sound gathering plates are made of hard smooth materials. The sound gathering plate group is formed by permutation and combination of the sound gathering plates and is arranged around the sound production unit, so that a sound source is spread towards a specified direction, the volume of the outer side of the sound gathering plate group is reduced, the purpose of listening to sound entertainment is achieved, and the effect on other people is reduced.

The utility model relates to a percussion mechanism and an anastomat using the percussion mechanism. The percussion mechanism comprises a percussion assembly and a reset assembly, the percussion assembly comprises a driving block, a first elastic piece and a percussion handle, the near end of the driving block is provided with a first inclined structure inclining towards the near end of a shell from top to bottom, and the first elastic piece provides driving force for driving the driving block to move towards the near end of the shell. The percussion handle drives the driving block to move in the direction close to the far end of the shell, the reset assembly comprises a locking block and a second elastic piece, the far end of the locking block is provided with a second inclined structure capable of being matched with the first inclined structure, the locking block can drive the locking block to rotate clockwise, and the second elastic piece can provide driving force for driving the locking block to rotate anticlockwise. When the locking block rotates clockwise, the far end of the locking block slides from bottom to top along the first inclined structure relative to the driving block, and when the locking block rotates anticlockwise, the far end of the locking block slides from top to bottom along the first inclined structure relative to the driving block.

This utility model discloses a polishing mechanism for the production of automotive semi-circular chuck parts, relating to the field of automotive semi-circular chuck part production technology. It includes a placement frame; a buffer base fixed to the lower inner side of the placement frame; a polishing body fixed to the upper end of the buffer base; a lifting mechanism installed and connected to the upper inner side of the placement frame; and a sound-absorbing closing mechanism installed and connected to the lower end of the lifting mechanism, located above the polishing body. When the lifting mechanism extends or retracts, it can change the position of the sound-absorbing closing mechanism to engage and close at the upper end of the polishing body, thereby reducing the noise caused by internal vibrations of the polishing body.

The invention relates to the technical field of doors, in particular to a solid wood door which comprises a door frame and a door leaf rotationally connected to the inner side of the door frame through hinges, an inner side boss for limiting the door leaf is fixedly mounted on the inner wall of the door frame, and mounting frames are fixedly mounted on the two sides of the lower end of the door leaf correspondingly; the mounting frame is a hollow box with the periphery closed, a first pressing handle makes contact with the surface of an inner side boss to generate pushing force, the first pressing handle is driven to drive a driving shaft and two supporting plates to rotate, the angle is adjusted, the positions of the supporting plates are adjusted, and the bottoms of the supporting plates make contact with a floor; the supporting plate is arranged on the bottom of the door leaf, plays a pre-supporting role, seals the connecting portion of the bottom of the door leaf and a floor, can bear and share the overall weight of the door leaf, avoids the problem that the connecting portion of the door frame and the hinge deforms, and can avoid untight closing of the door leaf and the door frame after the door leaf is closed. Air flow causes shaking and vibration of the door leaf to generate noise.

The utility model discloses a wood decoration panel installation guide rail which comprises two sets of longitudinally-arranged sliding rods, the longitudinal section of each sliding rod is in a U shape, and the upper end and the lower end of each sliding rod are fixedly connected with a wall. The device further comprises a transverse rail and a mounting assembly. The two ends of the transverse rail are in sliding connection with the corresponding sliding rods correspondingly. The multiple installation assemblies are slidably connected to the transverse rail. The mounting assembly comprises a base, a damping piece and a mounting piece; and the panel is connected with the mounting piece through a bolt. On the basis that the structural stability is guaranteed, the supporting flexibility of the decoration panel is improved.

The invention provides a WIFI and Bluetooth coexistence method and electronic equipment. The WIFI and Bluetooth coexistence method is used for reducing the isolation degree between a WIFI antenna and a Bluetooth antenna in the electronic equipment. Comprising the following steps: transmitting a first signal to a router connected with the electronic equipment every specified duration; when a second signal sent by the router in response to the first signal is received, detecting an RSSI value and an SNR value of the second signal; the total power of the electronic equipment is obtained through the respective weights of the EIRP value and the RSSI value of the first signal, the EIRP value and the RSSI value, the respective weights of the EIRP value and the RSSI value of the first signal are obtained through the SNR value, and the EIRP value of the first signal is detected when the first signal is transmitted; and if the total power of the electronic equipment is greater than a preset threshold value, reducing the transmitting power of the WIFI antenna based on the total power of the electronic equipment and the preset threshold value.

The utility model relates to a mute bouncing core, the bouncing core is arranged in a drainage hole of a bathroom drainage device and drives a sealing cover to close or open the drainage hole, the bouncing core is composed of a shell, a screw shaft, a rotating shaft, a guide groove piece, a spring and a base, the guide groove piece is attached to the circumferential surface of the screw shaft, a guide sliding groove is formed in the guide groove piece in the length direction, and the spring is arranged in the guide sliding groove. A rotary driving part and a positioning matching part are arranged in the guide chute; a circular groove is formed in the screw shaft, the rotating shaft is rotatably mounted in the circular groove, a positioning part is arranged at the outer end of the rotating shaft, the positioning part is slidably arranged in the guide sliding groove, and the screw shaft is fixed in the shell; the upper end of the spring is inserted into the through hole in the bottom end of the screw shaft and abuts against the inner end of the rotating shaft, the lower end of the spring abuts against the base, and the base is connected to the bottom end of the shell. The bouncing core is simple in structure and convenient to install and replace, and compared with a common bouncing core, the bouncing core has the silence using effect.

The application relates to the technical field of wall heat preservation, in particular to an outer wall composite heat preservation structure, which comprises a heat preservation layer, a connecting mechanism and a wall base layer, the connecting mechanism and the heat preservation layer are connected through a non-continuous contact part, at least one closed or semi-closed air cavity is formed between the connecting mechanism and the heat preservation layer and / or in the heat preservation layer, at least one partition is arranged in the air cavity and used for dividing and supporting the air cavity. The non-continuous contact part directly reduces the physical contact area between the connecting mechanism and the heat preservation layer, weakens the heat conduction and sound vibration conduction paths from the source, and lays a structural foundation for reducing the heat bridge and sound bridge effects. Secondly, the formed air cavity has low thermal conductivity and can effectively block heat flow, thereby achieving the effects of heat insulation and sound insulation; the partition in the air cavity plays a role of supporting the air cavity structure and preventing the air cavity from collapsing in the pressure receiving or installation process, and the stability of the whole structure is enhanced.

The utility model discloses a low-noise electromagnetic valve core iron mechanism, and belongs to the field of electromagnetic valves. The core iron mechanism comprises a fixed core iron and a movable core iron below the fixed core iron. And an upper accommodating groove with an upward opening is formed in the upper end surface of the movable core iron. The upper containing groove is provided with an upper groove upper section and an upper groove lower section. The core iron mechanism further comprises a noise reduction piece made of non-metal materials. The silencing piece is provided with a cylindrical part and a flanging part. And the cylindrical part is accommodated in the lower section of the upper groove. And the flanging part is accommodated in the upper section of the upper groove. And the upper end surface of the flanging part is higher than the upper end surface of the movable core iron. The utility model has the beneficial effect that the silencing piece is configured so as to reduce the sound caused by the attraction of the fixed core iron and the movable core iron.

The utility model discloses a low-temperature protection device for a condensation tank, which belongs to the technical field of low-temperature protection devices and comprises an arc-shaped sleeve, an electric heating device II is arranged inside the arc-shaped sleeve, an anti-collision component is arranged outside the arc-shaped sleeve, a fluorescent strip is arranged on the surface of the anti-collision component, and a fixing frame is arranged below the arc-shaped sleeve. A lifting plate is arranged in the middle of the fixing frame, a first electric heating device is arranged on one side of the lifting plate, an adjusting device is arranged below the lifting plate, and a cleaning assembly is arranged on the surface of the adjusting device. The anti-collision assembly is arranged, the anti-collision plate is arranged outside the arc-shaped sleeve, so that the protection effect of the arc-shaped sleeve can be improved, the air bag is arranged between the arc-shaped sleeve and the anti-collision plate, impact force generated during collision can be processed, the arc-shaped sleeve is prevented from driving the condensation tank to shake after being collided, and the condensation tank is prevented from being damaged. And silencing cotton is arranged in the anti-collision plate, so that sound generated during collision can be reduced.

The utility model discloses a wedge type sound barrier, which relates to the technical field of sound barriers and comprises two mounting seats, four connecting holes are arranged on the upper surfaces of the two mounting seats in a rectangular array, two support frames are fixedly connected to the upper surfaces of the two mounting seats, and mounting plates are arranged on the opposite surfaces of the two support frames. The rubber plate, the connecting plate, the limiting block, the L-shaped clamping groove, the sliding groove, the limiting groove, the inserting groove, the locking block and the buffer plate are matched with one another, the connecting plate and the sliding groove are arranged, so that installation of the installation plate is facilitated, and the position of the installation plate is limited and fixed through the effect of the limiting block, the L-shaped clamping groove and the locking block; according to the wedge type sound barrier, the buffering phenomenon is achieved through the arrangement of the buffering plate, the problems that in an existing wedge type sound barrier, assembling and connecting are conducted through a plurality of bolts, and the assembling steps are tedious and not concise are solved, and the effects that assembling is rapid and convenient, operation is easy, and the assembling efficiency is improved are achieved.

The invention relates to the technical field of slurry pumps, and discloses a slurry pump for oil exploitation, which comprises a device shell, a control shaft is rotatably connected in the device shell, a rotating wheel is fixedly connected to the side surface of the control shaft, a driving motor is arranged on the side surface of the rotating wheel, the rotating wheel is connected with the driving motor through a belt, and a connecting rod is rotatably connected to the side surface of the control shaft. A sliding groove and a movable groove are formed in the device shell, a movable rod is fixedly connected to the side face of the connecting rod, the connecting rod and the movable rod are arranged at the sliding groove, a piston rod head is fixedly connected to the side face of the movable rod, the piston rod head is arranged at the movable groove, and the piston rod head is in sealed connection with the movable groove; the device is provided with the piston rod head, the contact area of the piston rod head and the inner wall is increased, so that the edge contact stress is reduced, the service life of the piston rod is prolonged, meanwhile, the connector is arranged, part of stress can be absorbed during movement, the stress of the piston rod head in the whole process is balanced, and the sealing performance of the device is improved.

The purpose of the present invention is to reduce operating sound and shock in an ophthalmic device for measuring intraocular pressure using a high-pressure gas. An ophthalmic device is provided with: a high-pressure gas cylinder (101) that continuously generates high-pressure gas; a pressure storage tank (104) for storing the high-pressure gas supplied from the high-pressure gas cylinder (101); a pressure regulator (103) that is disposed between the high-pressure cylinder (101) and the pressure storage tank (104) and that supplies the high-pressure air supplied by the high-pressure cylinder (101) to the pressure storage tank (104) in a state in which the high-pressure air is stabilized at a specific pressure; the nozzle 107 is connected with the pressure storage box 104 and is used for spraying high-pressure gas to the examined eye 200; and an electromagnetic valve (105) disposed between the pressure storage tank (104) and the nozzle (107).

The invention discloses a new energy automobile vehicle-mounted voice assistant installation stabilizing structure based on a lightweight framework. Comprising a central control panel, a main driving instrument board fixedly installed at one end of the central control panel, a co-driving box board fixedly installed at the other end of the central control panel, a co-driving sealing cover board installed at the top of the co-driving box board through an adhesive and located at the same height as the central control panel, and a main driving instrument board installed on the co-driving instrument board in a clamped mode. And an instrument cover plate is arranged at the top of the central control panel and the co-driver sealing cover plate. And auxiliary display screens are fixedly mounted on the central control panel, the main driver instrument panel and the co-driver sealing cover plate. A voice assistant recognition electric control assembly is installed in the auxiliary display screen. A center console is fixedly installed on the front face of the center control panel, and a sealing box body is integrally installed at the position, opposite to the center console, of the center control panel. And a radio array assembly is fixedly mounted in the sealed box body. The method has a certain directional sound receiving effect, so that the recognition accuracy of a voice assistant is ensured, and the sound signal conversion accuracy is also ensured.

The utility model discloses an isolation operation mechanism of an environment-friendly cabinet, which is small in product vibration and sound and more sensitive in operation. According to the technical scheme, the machine comprises a machine frame and an operation device arranged on the machine frame, and the machine frame comprises a bottom plate and a panel arranged above the bottom plate through a first stand column; the operating device comprises two operating spindles arranged at intervals, an elastic energy storage mechanism arranged between the operating spindles and an output shaft in linkage fit with the operating spindles through a linkage mechanism, and the elastic energy storage mechanism comprises a spring guide rod and a spring arranged outside the spring guide rod. The two operation main shafts are provided with driving assemblies connected with the two ends of the spring guide rod respectively, the bottom plate is provided with a middle plate through a second stand column, the lower end of the output shaft is supported on the middle plate, the upper end of the output shaft is supported on the panel, the lower end of the output shaft is provided with a positioning plate, and the two ends of the positioning plate are provided with first positioning grooves. The middle plate is provided with a positioning column matched with the first positioning groove in a positioning mode.

The present disclosure relates to a pipeline machine. The pipeline machine comprises a machine body, a heating assembly and a flow limiting assembly. The machine body has a water inlet pipeline, a water tank and a water outlet pipeline. The water inlet pipeline is in communication with a water inlet of the water tank. The flow limiting assembly comprises a multi-stage connecting pipeline and a flow limiting pipeline. A first-stage connecting pipeline in the multi-stage connecting pipeline is in communication with a water outlet of the water tank through the heating assembly. A last-stage connecting pipeline in the multi-stage connecting pipeline is in communication with the water outlet pipeline. Adjacent two-stage connecting pipelines in the multi-stage connecting pipeline are in communication through the flow limiting pipeline. An inner diameter of the flow limiting pipeline is smaller than an inner diameter of each connecting pipeline, and the inner diameter of the flow limiting pipeline decreases or is equal along a water flow direction. The embodiment of the present disclosure can reduce the sound of bubble flow and water flow noise.

This invention discloses a power-assisted gas spring with noise reduction function, comprising a cylinder and a piston rod assembly. The piston rod assembly divides the inner cavity of the cylinder into a rod chamber and a rodless chamber. A spring is disposed in the rodless chamber, and the spring and the cylinder are in clearance fit. A front spacer assembly and a rear spacer assembly are disposed in the rodless chamber. The front spacer assembly is movably disposed in the rodless chamber and is in clearance fit with the cylinder. The rear spacer assembly is fixedly disposed at the rear end of the cylinder. The spring abuts against the front spacer assembly and the rear spacer assembly. The front spacer assembly includes a front spacer body and a sealing ring. The sealing ring is sleeved on the front spacer body and has several first protrusions. Several second protrusions are disposed on the outer side wall of the sealing ring. Several third protrusions are disposed on the upper end surface of the front spacer body along the circumferential direction. The first protrusions protrude beyond the third protrusions. The hardness of the first protrusions is less than that of the third protrusions. The front spacer assembly generates less noise upon impact.

The present invention belongs to the technical field of glass doors and windows, specifically a silent glass door and window walking guide mechanism, including a guide groove, a guide rail slidably connected to the inside of the guide groove, a supporting device arranged at the bottom of the guide rail, and a fixing device rotatably connected to the two ends of the inside of the guide rail, and an anti-collision device arranged in the middle of the two ends of the inner wall of the guide groove. The guide rail can be detachably installed with the door and window through the fixing device, and the bottom end of the guide rail is rotatably connected to the limit rod through a bearing. The upper and lower ends of the outer wall of the limit rod are provided with rubber rings. The present invention reduces friction, thereby reducing the sound generated during movement, and under the action of the ball, reduces sliding friction, thereby reducing the sound generated during sliding, thereby increasing the service life of the guide rail.

The utility model relates to the technical field of ice storage buckets, in particular to an ice storage bucket which comprises a bucket body, a bucket shoulder, a bucket turning cover and a bucket baffle, the bucket body is provided with an ice storage cavity, the ice storage cavity is provided with an ice inlet and an ice taking opening, the bucket shoulder is located between the ice inlet and the ice taking opening, the bucket baffle is installed between the bucket body and the bucket shoulder, and the bucket turning cover is hinged to the bucket shoulder. A flow guide groove is formed in the bottom of the barrel body, and the flow guide groove and the bottom of the barrel body are obliquely arranged. The flow guide groove used for guiding the flowing direction of ice water is formed in the bottom of the barrel body, the flow guide groove inclines towards the direction away from the ice taking opening, meanwhile, the bottom arrangement part of the barrel body also inclines towards the direction of the center of the flow guide groove, and therefore the ice water can be molten at the corner of the bottom of the barrel body and can be concentrated towards the flow guide groove. The ice blocks further flow in the same direction in a concentrated mode in the flow guide grooves, ice water formed by melting the ice blocks is prevented from being accumulated at the bottom corners to form accumulated water, the accumulated water capacity is reduced, peculiar smells generated by accumulated water and bred bacteria are greatly reduced, and the quality of the ice blocks is effectively guaranteed.

The invention discloses a building sound insulation system and a construction method, the building sound insulation system comprises a suspender assembly, the suspender assembly is connected with a sound insulation supporting structure, and the sound insulation supporting structure is connected with a sound insulation structure; the sound insulation supporting structure comprises a first supporting structure, the first supporting structure is connected with a suspender assembly, the first supporting structure is connected with a first plate layer, and the first plate layer is provided with a plurality of porous sound absorption plates; the sound insulation supporting structure further comprises a second supporting structure, the second supporting structure is connected with the suspender assembly, the second supporting structure is connected with a second plate layer, and the second plate layer is provided with a plurality of sealing plates. And the sealing plate is positioned below the porous sound-absorbing plate. According to the description of the scheme, the scheme has the beneficial effects that the structure is simple, the design is reasonable, and the bass noise transmitted from the upper part can be effectively eliminated, so that the impact sound of upstairs floor slabs is isolated.

The utility model relates to a variable air inlet system. The variable air inlet system comprises a mounting part, a driver, a sliding rail, a lengthening pipe and a buffering mechanism, the driver comprises a driving part and a push rod, the driving part is closer to the air inlet of the engine than the push rod when being observed from the side view direction, and the driving part can enable the push rod to generate linear displacement. The sliding rail is arranged on the installation part through a sliding rail support, and the sliding rail support is provided with a lengthening pipe stopping face. The lengthening pipe is provided with a connecting part. And the buffer mechanism is arranged on the connecting part of the lengthening pipe or the lengthening pipe stop surface. Wherein the push rod is actuated by the driving force of the driving piece, so that the lengthening pipe can be selectively combined with or separated from the air inlet pipe, and during separation, the connecting part is propped against the backstop surface of the lengthening pipe, and buffering force is provided by the buffering mechanism, so that the power performance of high and low rotating speeds and the oil consumption level of an engine can be simultaneously improved, and high-rotating-speed vibration can be overcome; the method is an optimal design.

The utility model relates to the technical field of breathing mask equipment, in particular to a breathing mask capable of receiving oxygen and measuring pressure, which comprises a sealing gasket assembly, a frame assembly and a bent pipe assembly which are sequentially and detachably butted and communicated, the bent pipe assembly comprises a bent pipe, an annular silencing part and a buckle cover, a groove part is formed in the bent pipe, a plurality of vent grooves are formed in the inner side of the groove part in the peripheral direction, a hollow cylinder is arranged at the center of the groove part, the annular silencing part is arranged in the groove part, the buckle cover is arranged on the groove part in a buckled mode, and a plurality of exhaust holes are formed in the buckle cover. Exhaled waste gas is exhausted through the vent groove, the annular silencing piece and the exhaust hole in sequence; according to the breathing mask capable of receiving oxygen and measuring pressure, the problems that exhausted waste gas blows a bed accompanying part and noise is generated can be effectively solved, treatment of a patient is facilitated, and meanwhile the comfort of the patient and the bed accompanying part of the patient in the treatment process is improved; and oxygen receiving and pressure measuring functions are added, so that more use requirements are met.

The utility model relates to the technical field of keys, and particularly discloses a key back surface structure, which comprises a bottom plate, a key cap and a component force assembly, the plurality of keycaps are uniformly arranged on the bottom plate through a sliding mechanism; the component force assembly is arranged on the key cap; the component force assembly comprises a dispersion groove and a stress groove; the periphery of the keycap is provided with a dispersion groove. A stress groove is formed in the dispersion groove; according to the utility model, through the arrangement of the component force assembly, when a user presses the keycap, the keycap transmits the pressing force to the dispersion groove, so that the dispersion groove can concentrate the pressing force and transmit the pressing force to the stress groove, and the stress groove can buffer the pressing force; the pressure bearing effect of the stress groove and the durability of the keycap can be improved. The silica gel structure is simple and reasonable in structure and ingenious in design, and the silica gel structure and the elastic piece are directly combined and directly installed by removing the spacer layer.