CN214648279U

CN214648279U - Freely-bendable active noise reduction back cushion, passenger car seat and railway vehicle cockpit

Info

Publication number: CN214648279U
Application number: CN202120591389.7U
Authority: CN
Inventors: 刘玉梅; 盛佳香; 熊明烨; 郝子绪; 胡婷; 王红人; 王梦雨; 刘鹏程; 周彦轩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-11-09
Anticipated expiration: 2031-03-23

Abstract

The utility model belongs to the technical field of passenger cars and rail vehicles, and provides a freely bendable active noise reduction pillow, a passenger car seat with a freely bendable active noise reduction pillow, and an active noise reduction using such a method cockpit of rail vehicle. The passenger car seat and the cockpit of the rail vehicle include a seat, a freely bendable headrest and an active noise reduction system; the freely bendable headrest adopts an aluminum alloy as the headrest support frame, so that the headrest has a certain supporting strength and freedom at the same time. It is flexible, and is filled and wrapped with memory foam to ensure the comfort of the driver and passengers. The active noise reduction system includes a reference sensor, a comparison sensor, a sound wave generator and a signal controller. The signal controller receives the environmental noise signal and feedback correction signal input by the sensor, and controls the sound wave generator to emit the same frequency and amplitude, but Noise waves in opposite phases, thereby suppressing the noise entering the occupant's ears.

Description

Freely-bendable active noise reduction back cushion, passenger car seat and railway vehicle cockpit

Technical Field

The utility model belongs to the technical field of rail vehicle, a but the backing pillow of making an uproar, a passenger train seat that has the backing pillow of making an uproar and the rail vehicle cockpit that adopts such mode initiative to fall of making an uproar are initiatively fallen to the bending formula of freedom is provided.

Background

Along with the continuous improvement of the living standard of people, the requirement of people on daily traveling riding comfort is higher and higher. When a passenger car or other transportation means is taken, tinnitus, vexation and other conditions are often caused by various noises, so that the riding comfort of passengers is affected, and physical fatigue is caused. In addition, rail vehicles such as subways are high in speed and high in noise, so that riding comfort of drivers and passengers is seriously influenced, especially when the drivers work in a high-noise environment for a long time, hearing is damaged to different degrees, and more serious people influence normal physiological functions such as heart and brain and nerves, so that driving safety is influenced.

At present, no more perfect mode exists for solving the problem of noise of the passenger car, the subway and other railway vehicle cabs, and based on the current situation, how to effectively reduce the noise of the passenger car, the subway and other railway vehicle cabs becomes a problem to be solved urgently in the field. In view of this, the present invention is especially provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, promptly for solve the problem of making an uproar falls in passenger train and rail vehicle cockpit, the utility model provides a but the free bending formula initiative that is used for rail vehicle cockpit falls the headrest of making an uproar, a passenger train seat that has the headrest of making an uproar falls in free bending formula initiative and a rail vehicle cockpit that adopts such mode initiative to fall the noise falls. The passenger car seat and the railway vehicle cockpit comprise a freely bendable back cushion (1), a seat (2) and an active noise reduction system (3), and are characterized in that the active noise reduction system comprises a reference sensor, a comparison sensor (3-1), a sound wave generator (3-2) and a signal controller (3-3).

The reference sensor is used for collecting mixed noise of the riding environment and transmitting the mixed noise to the signal controller (3-3); the comparison sensor (3-1) is used for monitoring the running condition of the active noise reduction system and transmitting the running condition to the signal controller (3-3) for feedback correction; the signal controller (3-3) is used for receiving the mixed noise signal and the feedback correction signal and updating an output phase sound wave output signal in real time; the sound wave generator (3-2) is used for receiving the sound wave signals output by the signal controller (3-3) in real time updating and sending out noise sound waves with the same frequency and amplitude but opposite phases, so that noise transmitted into ears of passengers is suppressed.

In the above preferred technical solution of the freely bendable active noise reduction headrest for passenger car seats and railway vehicle cabs, the active noise reduction system (3) comprises 4 reference sensors, 2 comparison sensors (3-1) and 2 sound wave generators (3-2), the reference sensors are respectively disposed near the top of the passenger car/cab, the floor of the passenger car/cab, and the left and right windows; the comparison sensor (3-1) and the sound wave generator (3-2) are arranged in grooves on two sides of the headrest (1) capable of being bent freely, and the signal controller (3-3) is arranged below the seat (2). In particular, a protective cover is installed outside the comparison sensor (3-1) and the sound generator (3-2) to prevent the reference sensor, the comparison sensor (3-1) and the sound generator (3-2) from being damaged.

In the preferable technical scheme of the freely-bendable active noise reduction back cushion for the passenger car seat and the railway vehicle cockpit, the back of the freely-bendable back cushion (1) is provided with a hook structure which is matched with the groove on the inner side of the seat (2), so that the freely-bendable back cushion (1) can be taken, placed and fixed freely. In addition, the freely-bendable active noise reduction headrest can be fixed on the inner side of the backrest of the seat (2) by selecting a bolt connection mode and the like according to actual requirements.

In the above preferred scheme of the active noise reduction headrest capable of freely bending for passenger car seats and railway vehicle cabs, the inner side of the backrest of the seat (2) can be designed differently according to the actually selected thickness of the headrest, if the headrest is thicker, the backrest of the seat (2) can be arranged in a ladder shape and matched with the headrest (1) capable of freely bending, and the riding comfort of a driver and passengers is improved.

In the preferred technical scheme of the freely bendable back cushion (1), the freely bendable back cushion (1) is mainly divided into two parts, namely a metal support frame and a non-metal filler, wherein the metal support frame is made of an aluminum alloy material, and the aluminum alloy has certain strength and flexibility and can play a role in freely bending, folding and supporting; the nonmetal filler is made of memory cotton, is also called slow rebound, embodies remarkable viscoelastic property and soft material property, has strong impact energy absorption capacity, and can improve the riding comfort of drivers and passengers and protect the neck of the drivers and the passengers to a certain extent.

Furthermore, the utility model also provides a passenger train seat, passenger train seat be any one of above-mentioned technical scheme passenger train seat, and passenger train seat includes any one of above-mentioned technical scheme active noise reduction system.

Finally, the utility model also provides a rail vehicle cockpit, rail vehicle cockpit is any one in above-mentioned technical scheme rail vehicle cockpit, and rail vehicle cockpit includes any one in above-mentioned technical scheme active noise reduction system.

The utility model provides a but backing pillow of making an uproar falls in free bending type initiative, its advantage: the headrest support frame of the freely bendable headrest (1) is made of an aluminum alloy material, and the aluminum alloy material is a metal material with ductility and plasticity and certain support strength and rigidity, so that the headrest has certain support strength and free bending property to meet the requirements of different drivers and passengers; in addition, the memory cotton is used for filling and wrapping, so that the riding comfort of a driver and passengers is ensured; the reference sensor is arranged at the top of the passenger car/the top of the cockpit, the floor of the passenger car/the floor of the cockpit, and one of the positions near the left window and the right window; and a comparison sensor (3-1) and a sound wave generator (3-2) are arranged on two sides of the headrest (1) which can be freely bent, so that active noise reduction is conveniently carried out near the heads of drivers and passengers, good working and rest environments are provided for the drivers and the passengers, and the riding comfort is improved.

Drawings

The present invention is described below with reference to the accompanying drawings for a free-bending headrest for a railway vehicle cockpit, in which:

FIG. 1 is a schematic structural view of the freely bendable active noise reduction headrest of the present invention

FIG. 2 is an enlarged view of the portion A in FIG. 1

FIG. 3 is a schematic view of a back structure of a freely bendable headrest

FIG. 4 is a schematic view of a seat structure

FIG. 5 is a cross-sectional view of the inner locking structure of the seat groove

List of reference numerals:

1. the headrest can be freely bent, 2, a seat, 3, an active noise reduction system, 3-1, a comparison sensor, 3-2, a sound wave generator, 3-3, a signal controller and 4, a protective cover.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the following detailed description is only used for explaining the basic technical principle of the present invention, and does not limit the protection scope of the present invention, and those skilled in the art can make corresponding adjustments according to the actual situation.

Further, it should be noted that, in the description of the present invention, terms indicating relative positional relationships such as "inside", "back", "upper", "lower", and the like are based on the relative positional relationships in the drawings, and are merely for convenience of description.

As shown in fig. 1 and fig. 2, in order to solve the noise reduction problem of passenger car and railway vehicle cockpit that is proposed in the background art, the utility model provides a passenger car seat and railway vehicle cockpit with active noise reduction function, including freely bendable back cushion (1), seat (2) and active noise reduction system (3), active noise reduction system (3) include reference sensor, comparison sensor (3-1), acoustic wave generator (3-2) and signal controller (3-3). The active noise reduction system (3) comprises 4 reference sensors, 2 comparison sensors (3-1) and 2 sound wave generators (3-2): the reference sensors are respectively arranged at the top of the passenger car/the top of the cockpit, at the floor of the passenger car/the floor of the cockpit and near the left window and the right window, and are mainly used for collecting mixed noise around the ears of passengers and transmitting the mixed noise to the signal controller (3-3); the comparison sensor (3-1) and the sound wave generator (3-2) are arranged in grooves on two sides of the headrest capable of being bent freely, wherein the comparison sensor (3-1) is used for monitoring the operation condition of the active noise reduction system and transmitting the operation condition to the signal controller (3-3) for feedback correction in time; the signal controller (3-3) is used for receiving the mixed noise signal and the feedback correction signal and updating an output phase sound wave output signal in real time; the sound wave generator (3-2) is mainly used for receiving the sound wave signal output by the signal controller (3-3) in real time updating and sending out noise sound waves with the same frequency and amplitude but opposite phases, so that noise transmitted into ears of passengers is suppressed. In addition, in order to prevent the sound wave generator (3-2) and the comparison sensor (3-1) from being damaged, a protective cover (4) is arranged outside the groove of the freely bendable headrest (1); the signal controller (3-3) is arranged below the seat and is mainly used for receiving and processing signals of the reference sensor and the comparison sensor (3-1), updating the output phase sound wave signals in real time and outputting noise opposite waves through the sound wave generator (3-2), so that noise reduction of the railway vehicle cockpit is realized.

Referring to fig. 3, 4 and 5, the freely bendable headrest is mainly divided into two parts: the non-metal support frame adopts an aluminum alloy material, plays the roles of freely bending, folding and supporting, adopts a memory cotton material as the non-metal filler, and improves the riding comfort of a driver. In addition, the back of the freely bendable back cushion (1) is provided with a hook structure which is matched with the groove structure of the backrest of the seat (2), so that the freely bendable back cushion (1) can be taken, put and fixed freely. An irregular hollow is arranged on the surface of the hook, and the irregular hollow can be matched with a structure in a groove of the seat (2) to finish the taking, placing and locking of the headrest (1) which can be bent freely.

Referring to fig. 1 and 4, the inner side of the seat back can be designed differently according to the actually selected thickness of the headrest, and if the headrest is thicker, the seat back can be arranged in a step shape to be matched with the headrest (1) which can be bent freely, so that the riding comfort of a driver and passengers is improved.

It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can adjust the above-mentioned structure without deviating from the principle of the present invention, so that the present invention can be applied to more specific application scenarios.

For example, in an alternative embodiment, the number of reference sensors need not be four, and may be more or less, as long as the noise signal in the cockpit/cabin environment can be reliably tested, without departing from the principles of the present invention, and thus all will fall within the scope of the present invention.

For example, in another alternative embodiment, the reference sensor does not have to be disposed near the top of the passenger/cabin, the floor of the passenger/cabin, the windows and doors on the left and right sides of the passenger/cabin, as long as the noise signal in the environment of the cabin/cabin can be reliably detected, which does not deviate from the principles of the present invention and thus all fall within the scope of the present invention.

For example, in another alternative embodiment, the freely bendable headrest may be connected to the backrest of the seat by bolts as long as the effect of fixing the freely bendable headrest and the backrest of the seat can be achieved, which do not depart from the principle of the present invention and thus all fall within the protection scope of the present invention.

For example, in another alternative embodiment, the material of the freely bendable headrest supporting frame may be selected from low-carbon steel in an annealed state, as long as the metal material has ductility and plasticity and has certain supporting strength and rigidity, which do not depart from the principles of the present invention, and thus all fall within the protection scope of the present invention.

For example, in another alternative embodiment, the material of the freely bendable headrest filling may be selected from foam, etc., as long as it is a material capable of providing a soft support for the neck, without departing from the principles of the present invention, and therefore all fall within the scope of the present invention.

Furthermore, the utility model also provides a passenger train seat, this passenger train seat be the passenger train seat of any embodiment of the aforesaid to this passenger train seat has the initiative noise reduction system in any embodiment of the aforesaid.

Finally, the utility model also provides a rail vehicle cockpit, this rail vehicle cockpit is the rail vehicle cockpit of any embodiment of the aforesaid to this cockpit has the initiative noise reduction system in any embodiment of the aforesaid.

So far, the technical solution of the present invention has been described in connection with the preferred embodiments in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without deviating from the invention, a person skilled in the art may make equivalent changes or substitutions to the related technical features, and the technical solutions after such changes or substitutions will fall within the scope of the invention.

Claims

1. A freely bendable active noise reduction headrest, characterized in that the freely bendable active noise reduction headrest is used in a passenger car seat and a rail vehicle cockpit; the passenger car seat and the rail vehicle cockpit include a Freely curved headrest (1), seat (2) and active noise reduction system (3), said active noise reduction system comprising a reference sensor, a comparison sensor (3-1), a sound wave generator (3-2) and a signal A controller (3-3); the reference sensors are respectively arranged on the top of the passenger car/cockpit top, the passenger car floor/cockpit floor, and one near the left and right windows; the comparison sensor (3-1) is generated with the sound wave The sensors (3-2) are arranged in the grooves on both sides of the freely bendable headrest, and the signal controller (3-3) is arranged under the seat; 3-2) A transparent cover is installed on the outside to prevent the comparison sensor (3-1) and the sound wave generator (3-2) from being damaged; the reference sensor is used to collect the mixed noise of the riding environment and transmit it to the signal controller (3-3); the comparison sensor (3-1) is used to monitor the operation of the active noise reduction system, and transmit it to the signal controller (3-3) for feedback correction; the signal controller (3- 3) be used for receiving described mixed noise signal and described feedback correction signal, and the phase acoustic wave output signal of real-time update output; Described acoustic wave generator (3-2) is used for receiving real-time update output from described signal controller; The sound wave signals and emits noise sound waves with the same frequency and amplitude, but opposite phases, thereby suppressing the noise entering the occupant's ears.

2. A freely bendable active noise reduction headrest according to claim 1, characterized in that, the freely bendable headrest (1) is mainly divided into two parts: a metal support frame and a non-metallic filler, and a metal support The frame adopts aluminum alloy and other metal materials with certain ductility, plasticity and certain supporting rigidity, which play the role of free bending, folding and support. The back of the freely bendable headrest (1) is provided with a hook structure, which is adapted to the groove of the backrest of the seat (2), so as to realize the free pick-and-place and fixation of the freely bendable headrest (1); the seat ( 2) The inner side of the backrest can be designed differently according to the thickness of the actually selected headrest; if the headrest is thicker, the seat (2) backrest can be arranged in a stepped shape to cooperate with the freely bendable headrest (1) to improve driving. passenger and passenger comfort.

3. A passenger car seat, wherein the passenger car seat is the passenger car seat according to any one of claims 1 and 2, and the passenger car seat comprises any one of claims 1 and 2 The described active noise reduction system for passenger car seats.

4. A rail vehicle cockpit, characterized in that the rail vehicle cockpit is the rail vehicle cockpit described in any one of claims 1 and 2, and the rail vehicle cockpit comprises the Any one of the active noise reduction systems for rail vehicle cockpits.