Vehicular vibration transmission system

Abstract

To provide a vehicular vibration transmission system which suppresses unwanted vibration noise while transmitting necessary information to an occupant.SOLUTION: A vehicular vibration transmission system comprises a vibration transmission device 112 and a vibration noise suppression device 113. The vibration transmission device is provided at a seat 102 of a vehicle. The vibration transmission device transmits vibrations to an occupant. The vibration noise suppression device is provided at the vehicle. The vibration noise suppression device suppresses noise of vibrations caused by the vibration transmission device. By having this configuration, the vehicular vibration transmission system suppresses unwanted vibration noise while transmitting necessary information to the occupant through the vibrations.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vibration transmission system for a vehicle. [Background technology]

[0002] Patent Document 1 discloses an information providing device for an autonomous vehicle. This information providing device can provide information by vibration. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-082354 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the information providing device described in Patent Document 1, unnecessary vibration noise is transmitted to the occupants, which may cause discomfort to the occupants.

[0005] In view of the above background, an object of the present invention is to suppress unnecessary vibration noise while transmitting necessary information to an occupant. [Means for solving the problem]

[0006] In order to solve the above problems, one aspect of the present invention is a vibration transmission system for a vehicle, comprising a vibration transmission device (112) provided on a seat (102) of the vehicle for transmitting vibrations to an occupant, and a vibration noise suppression device (113) provided on the vehicle for suppressing the sound of vibrations caused by the vibration transmission device.

[0007] According to this aspect, it is possible to suppress unnecessary vibration noise while transmitting necessary information to the occupant.

[0008] In the above aspect, the vibration noise suppression device may output a vibration waveform having an opposite phase to a vibration waveform of the vibration transmission device.

[0009] According to this aspect, unnecessary vibration noise can be more reliably suppressed.

[0010] In the above aspect, the vibration transmission device may transmit vibrations to a part of the body of the occupant, and the vibration noise suppression device may transmit vibrations to another part of the body of the occupant.

[0011] According to this aspect, it is possible to more reliably transmit necessary information to the occupant while more reliably suppressing unnecessary vibration noise.

[0012] In the above aspect, the vibration noise suppression device may be attached to a frame (117) of the seat.

[0013] According to this aspect, vibration noise of the frame can be suppressed.

[0014] In the above aspect, the vibration transmission device and the vibration noise suppression device do not need to operate when the seat belt is not fastened in the seat.

[0015] According to this embodiment, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0016] In the above aspect, the vibration transmission device and the vibration noise suppression device do not need to operate when a child seat is attached to the seat.

[0017] According to this embodiment, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0018] In the above aspect, the vibration transmission device and the vibration noise suppression device may be controlled in operation based on the state of an occupant when the state of the occupant is detected by a biosensor.

[0019] According to this embodiment, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0020] In the above aspect, the vibration noise suppression device may absorb the vibration noise of the vibration transmission device.

[0021] According to this aspect, it is possible to suppress unnecessary vibration noise with a simple configuration.

[0022] In the above aspect, the vibration noise suppression device may be attached to a frame.

[0023] According to this aspect, vibration of the frame can be suppressed.

[0024] In order to solve the above problems, one aspect of the present invention is a vibration transmission system for a vehicle, comprising a plurality of vibration transmission devices (120A, 120B) provided on a seat of the vehicle for transmitting vibrations to an occupant, and a vibration noise suppression device (113) provided on the vehicle for suppressing the noise of vibrations caused by the plurality of vibration transmission devices.

[0025] According to this aspect, it is possible to suppress unnecessary vibration noise while transmitting necessary information to the occupant.

[0026] In the above aspect, at least one of the plurality of vibration transmission devices may change a frequency of vibration.

[0027] According to these aspects, it is possible to make the passenger feel as if the vibration is moving. Effect of the Invention

[0028] One aspect of the present invention is a vibration transmission system for a vehicle, comprising a vibration transmission device (112) provided in a seat (102) of the vehicle for transmitting vibrations to an occupant, and a vibration noise suppression device (113) provided in the vehicle for suppressing the sound of vibrations caused by the vibration transmission device.

[0029] According to this aspect, it is possible to suppress unnecessary vibration noise while transmitting necessary information to the occupant.

[0030] In the above aspect, the vibration noise suppression device may output a vibration waveform having an opposite phase to a vibration waveform of the vibration transmission device.

[0031] According to this aspect, unnecessary vibration noise can be more reliably suppressed.

[0032] In the above aspect, the vibration transmission device may transmit vibrations to a part of the body of the occupant, and the vibration noise suppression device may transmit vibrations to another part of the body of the occupant.

[0033] According to this aspect, it is possible to more reliably suppress unnecessary vibration noise while more reliably transmitting necessary information to the occupant.

[0034] In the above aspect, the vibration noise suppression device may be attached to a frame (117) of the seat.

[0035] According to this aspect, vibration noise of the frame can be suppressed.

[0036] In the above aspect, the vibration transmission device and the vibration noise suppression device do not need to operate when the seat belt is not fastened in the seat.

[0037] According to this embodiment, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0038] In the above aspect, the vibration transmission device and the vibration noise suppression device do not need to operate when a child seat is attached to the seat.

[0039] According to this embodiment, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0040] In the above aspect, the vibration transmission device and the vibration noise suppression device may be controlled in operation based on the state of an occupant when the state of the occupant is detected by a biosensor.

[0041] According to this embodiment, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0042] In the above aspect, the vibration noise suppression device may absorb the vibration noise of the vibration transmission device.

[0043] According to this aspect, it is possible to suppress unnecessary vibration noise with a simple configuration.

[0044] In the above aspect, the vibration noise suppression device may be attached to a frame.

[0045] According to this aspect, vibration of the frame can be suppressed.

[0046] In order to solve the above problems, one aspect of the present invention is a vibration transmission system for a vehicle, comprising a plurality of vibration transmission devices (120A, 120B) provided on a seat of the vehicle for transmitting vibrations to an occupant, and a vibration noise suppression device (113) provided on the vehicle for suppressing the noise of vibrations caused by the plurality of vibration transmission devices.

[0047] According to this aspect, it is possible to suppress unnecessary vibration noise while transmitting necessary information to the occupant.

[0048] In the above aspect, at least one of the plurality of vibration transmission devices may change a frequency of vibration.

[0049] According to these aspects, it is possible to make the passenger feel as if the vibration is moving. [Brief description of the drawings]

[0050] [Figure 1] FIG. 1 is a perspective view of a seat according to a first embodiment; [Diagram 2] Schematic diagram of vibration transmission system [Diagram 3] Schematic diagram of the first example of a vibration transmission device [Figure 4] Schematic diagram of the second example of a vibration transmission device [Diagram 5] Diagram of vibration in vibration transmission system [Figure 6] Diagram of heat dissipation by vibration transmission system [Figure 7] Schematic diagram of a vibration transmission system according to a second embodiment. [Figure 8] Schematic diagram of a vibration transmission system according to a third embodiment. [Figure 9] 13 is a schematic diagram of a vibration transmission system according to a fourth embodiment. [Figure 10] 13 is a schematic diagram of a vibration transmission system according to a fifth embodiment. [Figure 11] FIG. 13 is a perspective view of a seat according to a sixth embodiment; [Figure 12] Front view of the pad [Figure 13] 13 is a front view of the pad according to the seventh embodiment. [Figure 14] FIG. 13 is a perspective view of a seat according to an eighth embodiment. [Figure 15] Schematic diagram of the main parts of the sheet bank [Figure 16] FIG. 13 is a perspective view of a seat according to a ninth embodiment. [Figure 17] Cross-sectional view of the child seat attachment section with the child seat connector mated to the anchor [Figure 18] Cross-sectional view of the child seat mounting area when the lid is in the closed position [Figure 19] Lid front view [Figure 20] Lid rear view [Figure 21] Cross-sectional view of the child seat mounting area when the lid is in the operating position DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0051] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which a vibration transmission device for a vehicle according to the present invention is applied to an automobile seat will be described below with reference to the drawings.

[0052] (First embodiment) 1, a floor 101 forms the floor surface of a vehicle. A seat 102 is provided on the floor 101. The seat 102 includes a seat body 103, a rotation device 104, a sliding device 105, and a reclining device 106.

[0053] The seat body 103 includes a seat cushion 107, a seat back 108, and a headrest 109. The seat back 108 is provided at the rear end of the seat cushion 107. The headrest 109 is provided at the upper end of the seat back 108.

[0054] The slide device 105 includes a pair of lower rails 110 and a pair of upper rails 111. The pair of lower rails 110 are provided on the floor 101 with their longitudinal direction extending in the front-rear direction. The pair of upper rails 111 are provided on the underside of the seat cushion 107 with their longitudinal direction extending in the front-rear direction. The pair of upper rails 111 are guided in the front-rear direction by the pair of lower rails 110, respectively.

[0055] The rotating device 104 is provided between an upper rail 111 of the slide device 105 and the seat cushion 107. The rotating device 104 supports the seat cushion 107 relative to the upper rail 111 so as to be rotatable about a vertical axis.

[0056] The reclining device 106 connects the rear end of the seat cushion 107 and the lower end of the seat back 108. The reclining device 106 supports the seat back 108 relative to the seat cushion 107 so as to be rotatable about a horizontal axis. The reclining device 106 supports the seat back 108 relative to the seat cushion 107 at any angle.

[0057] As shown in FIG. 2, the vibration transmission system includes a vibration transmission device 112, a vibration noise suppression device 113, and a control device 114. The vibration transmission device 112 is embedded in one side of the seat surface of the seat cushion 107. For example, the vibration transmission device 112 has a function of vibrating by a piezoelectric element. The vibration noise suppression device 113 is embedded in the other side of the seat surface of the seat cushion 107. For example, the vibration noise suppression device 113 has a function of vibrating by a piezoelectric element. For example, the control device 114 is an engine control unit. The control device 114 controls the vibration transmission device 112 and the vibration noise suppression device 113. For example, the control device 114 controls the vibration transmission device 112 and the vibration noise suppression device 113 to transmit necessary information to the occupant by vibration.

[0058] The vibration transmission device 112 generates a first vibration under the control of the control device 114. The first vibration is transmitted to the occupant. Specifically, the first vibration is transmitted to a part of the occupant's body. More specifically, the first vibration is transmitted to the right thigh of the occupant.

[0059] The vibration noise suppression device 113 generates a second vibration under the control of the control device 114. The second vibration is transmitted to the occupant. Specifically, the second vibration is transmitted to another part of the occupant's body. More specifically, the second vibration is transmitted to the left thigh of the occupant.

[0060] The first vibration and the second vibration are combined in the upper body of the occupant. As a result, a third vibration is generated. At this time, the amplitude of the third vibration is smaller than the amplitude of the first vibration and the amplitude of the second vibration. As a result, the suppressed sound of the third vibration is transmitted to the occupant.

[0061] Next, a first example of the vibration transmission device 112 will be described with reference to FIG. 3. As shown in FIG. 3, the seat cushion 107 includes a pad 115 and a lid 116. The pad 115 is made of a cushioning material having elasticity, such as polyurethane foam. The pad 115 includes a recess 115A and a harness hole 115B. The recess 115A is formed in a part of the surface of the pad 115. The harness hole 115B is formed in the pad 115 so as to be connected to the back side of the recess 115A. The lid 116 is made of the same material as the pad 115. The lid 116 is formed so as to fit into the recess 115A of the pad 115.

[0062] The vibration transmission device 112 includes a main body 112A and a harness 112B. The main body 112A is provided so as to generate a first vibration. The main body 112A is stored in a recess 115A of the pad 115 while being covered by a cover 116. One end of the harness 112B is connected to the rear surface of the main body 112A. The harness 112B is stored on the inner side of the pad 115 along the harness hole 115B. Although not shown in detail, the other end of the harness 112B is electrically connected to the control device 114. The harness 112B shares a path with the harnesses of other electrical components.

[0063] The vibration noise suppression device 113 has a similar configuration to the vibration transmission device 112 .

[0064] Next, a second example of the vibration transmission device 112 will be described with reference to FIG. 4. The same or corresponding parts as those in FIG. 3 are given the same reference numerals. The duplicated description of the parts will be appropriately simplified or omitted. As shown in FIG. 4, the harness groove 115C is formed on the surface side of the pad 115. The harness groove 115C is formed so as to be connected to one side of the recess 115A. The cover 116 is formed so as to fit into the recess 115A of the pad 115 and the harness groove 115C. One end of the harness 112B is connected to one side of the main body 112A. The harness 112B is stored on the surface side of the pad 115 along the harness groove 115C while being shielded by the cover 116. The vibration noise suppression device 113 has the same configuration as the vibration transmission device 112.

[0065] 5, A is a waveform of the first vibration generated by the vibration transmission device 112. B is a waveform of the second vibration generated by the vibration noise suppression device 113. C is a waveform of the third vibration obtained by combining the first vibration and the second vibration.

[0066] The first vibration is set to have a preset waveform. For example, the first vibration is set to have a sine wave shape. The second vibration is set to have a preset waveform. For example, the second vibration is set to have a sine wave shape. In this case, the second vibration is set to have a waveform that is in opposite phase to the waveform of the first vibration. Therefore, the amplitude of the third vibration is almost zero. As a result, almost no vibration sound corresponding to the third vibration is generated.

[0067] As shown in FIG. 6, the frame 117 supports the seat cushion 107. The pad 115 includes an air passage 118. The air passage 118 includes a first passage 118A, a second passage 118B, and a third passage 118C. The first passage 118A is formed along the surface of the pad 115 with the longitudinal direction being horizontal. Although not shown in detail, one end of the first passage 118A is connected to the external space of the seat cushion 107. The second passage 118B is formed with the longitudinal direction being vertical. One end of the second passage 118B is connected to the other end of the first passage 118A. The third passage 118C is formed along the back surface of the pad 115 with the longitudinal direction being horizontal. One end of the third passage 118C is connected to the other end of the second passage 118B.

[0068] The pump 119 is attached to the frame 117. The exhaust port of the pump 119 is connected to the other end of the third passage 118C. The intake port of the pump 119 is connected to the external space below the seat cushion 107.

[0069] The pump 119 draws in air from an intake port by receiving vibrations while the vehicle is running. The pump 119 discharges the air from an exhaust port. In the air passage 118, the air passes through the third passage 118C, the second passage 118B, and the first passage 118A, and is discharged to the outside of the seat cushion 107. Therefore, the air is replaced in the air passage 118. As a result, the buildup of heat in the seat cushion 107 is suppressed.

[0070] According to the first embodiment described above, the vibration noise suppression device 113 suppresses the noise of vibrations caused by the vibration transmission device 112. Therefore, it is possible to suppress unnecessary vibration noise while transmitting necessary information to the occupant by vibration.

[0071] Furthermore, the vibration noise suppressing device 113 outputs a vibration waveform that is in the opposite phase to the vibration waveform of the vibration transmitting device 112. This makes it possible to more reliably suppress unnecessary vibration noise.

[0072] Furthermore, the vibration transmission device 112 transmits vibrations to a part of the occupant's body, while the vibration noise suppression device 113 transmits vibrations to another part of the occupant's body. This makes it possible to more reliably transmit necessary information to the occupant through vibrations while more reliably suppressing unnecessary vibration noise.

[0073] When the seat belt is not fastened in the seat 102, the vibration transmission device 112 and the vibration noise suppression device 113 do not need to be operated. In this case, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0074] Furthermore, when a child seat is attached to the seat 102, it is not necessary to operate the vibration transmission device 112 and the vibration noise suppression device 113. In this case, it is possible to suppress the generation of unnecessary vibrations and vibration noise.

[0075] Also, the state of the occupant may be detected by a biosensor. In this case, the operation of the vibration transmission device 112 and the vibration noise suppression device 113 may be controlled depending on the state of the occupant. For example, if it is determined that the occupant is ignoring vibrations, it may be determined whether or not the vibration transmission device 112 and the vibration noise suppression device 113 need to operate based on a preset mode. For example, if it is determined that the occupant has lost consciousness, the operation of the vibration transmission device 112 and the vibration noise suppression device 113 may be stopped. In these cases, the generation of unnecessary vibrations and vibration noise can be suppressed.

[0076] Furthermore, at least one of the vibration transmission device 112 and the vibration noise suppression device 113 may determine whether or not it is functioning normally based on the current flowing through the device.

[0077] Also, an acceleration sensor may be attached to the seat 102, and based on the detection result of the acceleration sensor, it may be determined whether or not at least one of the vibration transmission device 112 and the vibration noise suppression device 113 is functioning normally.

[0078] Also, a PTC heater may be attached to the underside or the like of the vibration transmission device 112. In this case, the operation of the vibration transmission device 112 and the vibration noise suppression device 113 may be stopped when the temperature of the PTC heater becomes high. In this case, an excessive temperature rise due to the vibration of the vibration transmission device 112 and the vibration noise suppression device 113 can be suppressed.

[0079] Moreover, as the vibration noise suppression device 113, a door speaker of the vehicle may be used.

[0080] Second embodiment In the second embodiment, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and the duplicated description of the parts is appropriately simplified or omitted.

[0081] 7, the vibration transmission device 112 is provided so as to be disposed in the vicinity immediately below the seat bones of an occupant when the occupant is seated in the seat 102. The vibration noise suppression device 113 is attached to a frame 117 below the vibration transmission device 112.

[0082] According to the second embodiment described above, the vibration noise suppression device 113 is attached to the frame 117. Therefore, the vibration noise of the frame 117 can be suppressed.

[0083] Furthermore, the vibration transmission device 112 is provided so as to be disposed immediately below the seat bones of the occupant. Therefore, the seat bones of the occupant receive a relatively high pressure from the vibration transmission device 112. As a result, even if the vibration of the vibration transmission device 112 is relatively small, the vibration can be transmitted to the seat bones of the occupant.

[0084] It is advisable to avoid placing hard objects below the vibration transmission device 112 as much as possible. For example, it is advisable not to place springs below the vibration transmission device 112. For example, it is advisable to open holes in a resin pan below the vibration transmission device 112. In these cases, the comfort of the occupant when seated in the seat 102 can be improved.

[0085] Third embodiment In the third embodiment, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and the duplicated description of the parts will be appropriately simplified or omitted.

[0086] 8, the vibration sound suppressing device 113 includes a plurality of sound absorbing materials 113A. For example, the plurality of sound absorbing materials 113A are formed of the same material as the pad 115. For example, the plurality of sound absorbing materials 113A are integrally formed so that the surface is wavy. The vibration sound suppressing device 113 is disposed so as to cover all faces except the front surface of the vibration transmitting device 112. The vibration sound suppressing device 113 absorbs the vibration sound of the vibration transmitting device 112.

[0087] According to the third embodiment described above, the vibration noise suppression device 113 absorbs the vibration noise of the vibration transmission device 112. Therefore, it is possible to suppress unnecessary vibration noise with a simple configuration.

[0088] In this case, it is only necessary to reduce as much as possible the contact area between the vibration noise suppressing device 113 and the vibration transmitting device 112. In this case, it is possible to more reliably suppress unnecessary vibration noise.

[0089] Furthermore, it is sufficient to vibrate at a relatively low frequency in the vibration transmission device 112. In this case, it is possible to make the vibration sound less audible to passengers.

[0090] (Fourth embodiment) In the fourth embodiment, the same or corresponding parts as those in the third embodiment are denoted by the same reference numerals, and the duplicated description of the parts will be appropriately simplified or omitted.

[0091] 9, the vibration noise suppressing device 113 is a sound absorbing material 113A. The vibration noise suppressing device 113 is attached to a frame 117. For example, the vibration noise suppressing device 113 covers the upper surface side of the frame 117 below the vibration transmitting device 112.

[0092] According to the fourth embodiment described above, the vibration noise suppression device 113 is attached to the frame 117. Therefore, the vibration of the frame 117 can be suppressed.

[0093] It is also possible to reduce the contact area between pad 115 and frame 117 without using vibration noise suppression device 113. For example, pad 115 and frame 117 may be in almost point contact with each other. In this case as well, vibration of frame 117 can be suppressed.

[0094] Fifth embodiment In the fifth embodiment, the same or corresponding parts as those in the second embodiment are denoted by the same reference numerals, and the duplicated description of the parts will be appropriately simplified or omitted.

[0095] 10, the first vibration transmission device 120A is provided so as to be disposed at a position shifted to one side from directly below the seat bones of the occupant when the occupant sits on the seat 102. The second vibration transmission device 120B is provided so as to be disposed at a position shifted to the other side from directly below the seat bones of the occupant when the occupant sits on the seat 102. At least one of the first vibration transmission device 120A and the second vibration transmission device 120B is provided so as to be capable of changing the frequency of vibration.

[0096] For example, the first vibration transmission device 120A and the second vibration transmission device 120B vibrate at the same frequency. For example, when the first vibration transmission device 120A vibrates at 100 Hz, the second vibration transmission device 120B also vibrates at 100 Hz. For example, the first vibration transmission device 120A and the second vibration transmission device 120B vibrate at different frequencies. For example, when the first vibration transmission device 120A vibrates at 100 Hz, the second vibration transmission device 120B vibrates at 50 Hz.

[0097] The vibration sound suppressing device 113 suppresses the vibration sound of the first vibration transmission device 120A and the vibration sound of the second vibration transmission device 120B. For example, the vibration sound suppressing device 113 alternately outputs a vibration waveform in opposite phase to the vibration waveform of the first vibration transmission device 120A and a vibration waveform in opposite phase to the vibration waveform of the second vibration transmission device 120B at a preset time interval.

[0098] According to the fifth embodiment described above, the vibration noise suppression device 113 suppresses the vibration noise of the first vibration transmission device 120A and the vibration noise of the second vibration transmission device 120B. Therefore, it is possible to suppress unnecessary vibration noise while transmitting necessary information to the occupant by vibration.

[0099] Furthermore, the first vibration transmission device 120A and the second vibration transmission device 120B vibrate at the same frequency. Therefore, even if it is not possible to place the vibration transmission device at the desired position, the vibration can be transmitted to the passengers by making the desired position between the first vibration transmission device 120A and the second vibration transmission device 120B.

[0100] At least one of the first vibration transmission device 120A and the second vibration transmission device 120B is provided so as to be able to change the frequency of vibration. Therefore, the frequency of vibration of the first vibration transmission device 120A and the frequency of vibration of the second vibration transmission device 120B are combined, so that a new vibration of the combined frequency can be transmitted. In this case, by making the position where vibration is desired to be applied between the first vibration transmission device 120A and the second vibration transmission device 120B, it is possible to make the passenger feel as if the vibration is moving. For example, the first vibration transmission device 120A and the second vibration transmission device 120B may be arranged in the front-rear direction to make the passenger feel as if the vibration is moving in the traveling direction of the vehicle.

[0101] In the vibration transmission systems according to the first to fifth embodiments, the vibration of the vibration transmission device 112 etc. may be strengthened. In this case, the seat 102 can be provided with both a massage function and a heater function.

[0102] Moreover, the vibration transmission system of the first to fifth embodiments may be applied to an electric vehicle. In this case, various information may be transmitted to the electric vehicle by vibration. For example, when the vehicle is traveling with poor fuel efficiency, the fact may be transmitted by vibration. For example, vibrations simulating engine vibrations may be generated to convey the joy of driving to the passengers. For example, a sense of acceleration may be created by changing the frequency of the vibrations according to the speed. For example, a sense of realism may be created by combining sound and vibration. For example, vibrations simulating manual gear shifting may be transmitted.

[0103] In the vibration transmission systems according to the first to fifth embodiments, a game may be played in which the player guesses the location of vibration caused by the vibration transmission device 112 or the like, or the vibration may be synchronized with the game.

[0104] In the vibration transmission systems of the first to fifth embodiments, vibrations may be transmitted in conjunction with a situation in which it is desired to appeal to the emotions of the occupants. For example, when it is desired to surprise the occupants with an image or the like, vibrations may be transmitted in response to the image or the like.

[0105] For example, information on the timing of vibration may be added to information such as a video, and vibration may be transmitted based on the timing information. For example, vibration may be transmitted so that the occupant can relax. For example, vibration may be transmitted with different types, sizes, etc. depending on the type of music, movie, etc. For example, vibration sound may be intentionally generated to stimulate the occupant's senses. For example, vibration sound may be resonated so that the occupant can relax.

[0106] For example, when music is being played, vibrations at a different frequency may be transmitted only when a specific frequency is reached. For example, if a passenger is visually impaired, vibrations corresponding to the music may be generated in real time, or text information may be transmitted using vibrations as Morse code.

[0107] In the vibration transmission systems of the first to fifth embodiments, lighting that indicates with light that vibration is occurring may be added to the vibration transmission device 112, etc. For example, lighting that indicates with light that vibration is occurring may be added to the rear of the seat back 108 to notify the passengers in the rear seats of the vibration.

[0108] Moreover, the vibration transmission system of the first to fifth embodiments may be applied to an autonomous vehicle. In this case, various situations during autonomous driving may be transmitted by vibration. For example, when an autonomous taxi is used as a shared car, the location where the vehicle should be dropped off may be transmitted to each passenger by vibration. For example, in an autonomous bus, sudden braking, sudden steering, etc. may be transmitted by vibration in the seat 102, hanging straps, etc.

[0109] In the vibration transmission systems of the first to fifth embodiments, the strength of the vibration may be changed according to the physique of the passenger. In this case, the physique of the passenger may be determined by a pressure sensor of the seat 102. For example, when the passenger is not in contact with the seat back 108, the vibration may be automatically switched to a sound to notify the passenger by voice or the like that the passenger's back is no longer in contact with the seat back 108.

[0110] Also, a plurality of vibration transmission devices 112 may be provided, and the vibration transmission device 112 to be vibrated may be determined according to the seating posture of the occupant. For example, if the occupant is seated biased toward the right side of the seat 102, only the vibration transmission device 112 on the right side may be vibrated. For example, if the occupant is seated biased toward the left side of the seat 102, only the vibration transmission device 112 on the left side may be vibrated.

[0111] Sixth embodiment Patent Document 2 (JP 2013-220322 A) discloses a vehicle seat that is capable of detecting biological information of an occupant.

[0112] However, there are various physical builds of occupants in the vehicle seat described in Patent Document 2. For this reason, depending on the occupant's physical build, it may not be possible to detect biological information with high accuracy.

[0113] In view of the above background, an object of the present invention is to detect biological information of an occupant with high accuracy regardless of the physique of the occupant.

[0114] In order to solve the above problems, the present invention provides a vehicle seat (202) comprising a plurality of capacitance sensors (212) arranged horizontally on the surface side of a seat cushion (207) or the surface side of a seat back (208) of the vehicle seat (202).

[0115] According to this aspect, the biological information of the occupant is detected with high accuracy regardless of the physique of the occupant.

[0116] In the above aspect, the device may further include a conductive skin (213) that covers the plurality of capacitance sensors.

[0117] According to this aspect, static electricity can be removed from the periphery of the multiple capacitance sensors.

[0118] In the above aspect, a pad (214) is provided on the seat cushion or the seat back, and has a plurality of slits (214A) formed in a flexibility-improving area, and the plurality of capacitance sensors may be provided on the surface of the flexibility-improving area of ​​the pad.

[0119] According to this aspect, it is possible to improve the degree of intimacy between the capacitance sensors and the occupant.

[0120] In the above aspect, the plurality of capacitive sensors may be disposed along each of the plurality of slits.

[0121] According to this aspect, the multiple slits can be used as marks when arranging the multiple capacitance sensors.

[0122] In the above aspect, the seat cushion or the seat back may include a pad (214) having a plurality of recesses (214B) in which the plurality of capacitance sensors are respectively housed, and a plurality of lid bodies (215) fitted into each of the plurality of recesses while covering each of the plurality of capacitance sensors.

[0123] According to this aspect, the plurality of capacitance sensors can be reliably held in the seat back.

[0124] In the above aspect, the plurality of lids may be formed of the same material as the pad.

[0125] According to this aspect, the pressure when the capacitance sensor comes into contact with the occupant can be appropriately maintained.

[0126] In the above aspect, at least one of the plurality of capacitance sensors may be provided on the inner surface side of the bank portion of the seat cushion or the bank portion (208B) of the seat back.

[0127] According to this aspect, the capacitance sensor can be brought into contact with the occupant more reliably.

[0128] In the above aspect, the inner portion of the bank portion may be provided so as to be movable in the width direction of the sheet.

[0129] According to this embodiment, the capacitance sensor 212 can be brought into contact with the occupant with more certainty and with more appropriate pressure.

[0130] In the above aspect, the device may include a pad provided on the bank portion and an air cell (216) provided on a surface of the pad, and at least one of the plurality of capacitance sensors may be attached to the air cell.

[0131] According to this aspect, the capacitance sensor can be brought into contact with the occupant more reliably and with more appropriate pressure using a simple configuration.

[0132] In the sixth embodiment, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and the duplicated description of the parts will be appropriately simplified or omitted.

[0133] 11, a floor 201 forms the floor surface of the vehicle. A seat 202 is provided on the floor 201. The seat 202 includes a seat body 203, a rotation device 204, a sliding device 205, and a reclining device 206.

[0134] The seat body 203 includes a seat cushion 207, a seat back 208, and a headrest 209. The seat back 208 is provided at the rear end of the seat cushion 207. The headrest 209 is provided at the upper end of the seat back 208.

[0135] The slide device 205 includes a pair of lower rails 210 and a pair of upper rails 211. The pair of lower rails 210 are provided on the floor 201 with their longitudinal direction extending in the front-rear direction. The pair of upper rails 211 are provided on the underside of the seat cushion 207 with their longitudinal direction extending in the front-rear direction. The pair of upper rails 211 are guided in the front-rear direction by the pair of lower rails 210, respectively.

[0136] The rotating device 204 is provided between the upper rail 211 of the sliding device 205 and the seat cushion 207. The rotating device 204 supports the seat cushion 207 relative to the upper rail 211 so as to be rotatable about a vertical axis.

[0137] The reclining device 206 connects the rear end of the seat cushion 207 and the lower end of the seat back 208. The reclining device 206 supports the seat back 208 relative to the seat cushion 207 so as to be rotatable about a horizontal axis. The reclining device 206 supports the seat back 208 relative to the seat cushion 207 at any angle.

[0138] The multiple capacitance sensors 212 are aligned horizontally on the front surface side of the seat back 208. The multiple capacitance sensors 212 are arranged with their longitudinal direction aligned vertically.

[0139] The skin 213 is conductive. Specifically, the skin 213 is formed by weaving conductive threads. The skin 213 entirely covers the seat back 208 including the multiple capacitance sensors 212. The skin 213 is maintained in contact with the multiple capacitance sensors 212.

[0140] In Fig. 12, the seat back 208 includes a pad 214. The pad 214 includes a flexibility improvement area. In Fig. 12, the area surrounded by a dotted line is the flexibility improvement area. A plurality of slits 214A are formed in a lattice pattern in the flexibility improvement area. Although not shown in detail, in the pad 214, a plurality of capacitance sensors 212 are attached to the flexibility improvement area.

[0141] According to the sixth embodiment described above, the multiple capacitance sensors 212 are arranged in the horizontal direction in the seat back 208. Therefore, the biological information of the occupant can be detected with high accuracy regardless of the physique of the occupant.

[0142] In addition, two appropriate capacitance sensors 212 may be selected to detect the biological information depending on the physique of the occupant. For example, if the occupant is large, the leftmost capacitance sensor 212 and the rightmost capacitance sensor 212 in Fig. 1 may be selected to detect the biological information. For example, if the occupant is small, the second capacitance sensor 212 from the left and the second capacitance sensor 212 from the right in Fig. 1 may be selected to detect the biological information.

[0143] Furthermore, two capacitance sensors 212 may be selected to detect the biological information depending on the seating position of the occupant. For example, if the occupant is seated biased to the right side of the seat 202, the rightmost capacitance sensor 212 and the second capacitance sensor 212 from the left in Fig. 1 may be selected to detect the biological information. For example, if the occupant is seated biased to the left side of the seat 202, the leftmost capacitance sensor 212 and the second capacitance sensor 212 from the right may be selected to detect the biological information.

[0144] Furthermore, the length of the capacitance sensor 212 in the longitudinal direction may be set appropriately. For example, the capacitance sensor 212 may be disposed so as to extend from the upper end to the lower end of the pad 214. For example, the length of the capacitance sensor 212 in the longitudinal direction may be made as short as possible.

[0145] Furthermore, the number of capacitance sensors 212 may be set appropriately. By increasing the number of capacitance sensors 212, differences in physiques of passengers can be dealt with more precisely.

[0146] In addition, the surface layer 213 is conductive, which makes it possible to remove static electricity around the capacitance sensors 212. As a result, it is possible to detect the biological information of the occupant with higher accuracy.

[0147] The seat belt may be made conductive. For example, conductive thread may be woven into the seat belt. This can remove static electricity from the occupant. As a result, the biological information of the occupant can be detected more accurately.

[0148] Furthermore, the multiple capacitance sensors 212 are provided on the surface of the flexibility-improving region of the pad 214. This improves the degree of contact between the multiple capacitance sensors 212 and the occupant. As a result, the biological information of the occupant can be detected with higher accuracy.

[0149] In this case, the spacing of the slits 214A may be optimized to achieve a balance with the durability of the pad 214. The shape of the slits 214A may be other shapes, such as only vertical, only horizontal, or diagonal.

[0150] Furthermore, the multiple capacitance sensors 212 may be arranged along the multiple vertically elongated slits 214A. In this case, the multiple slits 214A may be formed at intervals equivalent to the intervals required when arranging the multiple capacitance sensors 212. In this case, the multiple slits 214A can be used as marks for arranging the multiple capacitance sensors 212.

[0151] In addition, the seating surface of the seat back 208 itself may be moved to bring the sensor into close contact with the occupant. In this case, the method of moving the seating surface may be set appropriately. In this case, the biological information of the occupant can be detected more accurately.

[0152] Seventh embodiment In the seventh embodiment, the same or corresponding parts as those in the sixth embodiment are denoted by the same reference numerals, and the duplicated description of the parts will be appropriately simplified or omitted.

[0153] FIG. 13 shows a main part of the pad 214. As shown in FIG. 13, the pad 214 has a recess 214B. Although details are not shown, a plurality of recesses 214B are formed. The plurality of recesses 214B are arranged in the horizontal direction. The plurality of recesses 214B respectively house the plurality of capacitance sensors 212. The lid body 215 is formed of the same material as the pad 214. Although details are not shown, a plurality of lid bodies 215 are provided. The plurality of lid bodies 215 are fitted into the plurality of recesses 214B while covering the plurality of capacitance sensors 212, respectively.

[0154] According to the seventh embodiment described above, the multiple lids 215 are fitted into the multiple recesses 214B, respectively, in a state in which the multiple lids 215 cover the multiple capacitance sensors 212. Therefore, the multiple capacitance sensors 212 can be reliably held in the seat back 208.

[0155] Moreover, the cover 215 is made of the same material as the pad 214. Therefore, the pressure when the capacitance sensor 212 comes into contact with the occupant can be appropriately maintained. As a result, the biological information of the occupant can be detected with higher accuracy.

[0156] The number of recesses 214B of the pad 214 may be greater than the number of capacitance sensors 212. In this case, the recesses 214B for accommodating the capacitance sensors 212 may be appropriately determined in consideration of the physique of the passenger. In this case, the biological information of the occupant can be detected with higher accuracy regardless of the physique of the occupant.

[0157] Eighth embodiment In the eighth embodiment, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and the duplicated description of the parts will be appropriately simplified or omitted.

[0158] 14, in the seat back 208, one of a pair of bank portions 208A protrudes forward from one side of the seating portion. One of the pair of bank portions 208A protrudes forward from the other side of the seating portion. In the pair of bank portions 208A, the surface of the inner portion is provided to be movable in the width direction of the seat 202.

[0159] At least one of the multiple capacitance sensors 212 is provided on a bank portion 208A of the seat back 208. In Fig. 14, the rightmost capacitance sensor 212 is stored in an inner portion of one of the pair of bank portions 208A. The leftmost capacitance sensor 212 is stored in an inner portion of the other of the pair of bank portions 208A.

[0160] 15 shows a main part of the inner side of the bank portion 208A. The pad 214 forms a main part of the bank portion 208A of the seat back 208. The air cell 216 is provided on the surface of the pad 214. The air cell 216 contains air. The capacitance sensor 212 is attached to the surface of the air cell 216.

[0161] Air cells 216 expand and contract as air flows in and out. As a result, the inner portion of bank portion 208B moves in the width direction of sheet 202. At this time, capacitance sensor 212 moves in the width direction of sheet 202 following the expansion and contraction of air cells 216.

[0162] According to the eighth embodiment described above, at least one of the multiple capacitance sensors 212 is provided on the bank portion 208A of the seat back 208. This makes it possible for the capacitance sensor 212 to more reliably come into contact with the occupant.

[0163] Furthermore, the inner portion of the bank portion 208A is provided so as to be freely movable in the width direction of the seat 202. This allows the capacitance sensor 212 to come into contact with the occupant more reliably and with more appropriate pressure.

[0164] Specifically, the bank portion 208A is moved in the width direction of the seat 202 by the air cell 216. Therefore, with a simple configuration, the capacitance sensor 212 can be brought into contact with the occupant more reliably and with more appropriate pressure.

[0165] In the sixth to eighth embodiments, water may be sprayed on the vehicle occupant or the occupant may be made to sweat in order to remove static electricity.

[0166] In the sixth to eighth embodiments, the surrounding environment such as humidity, vibration, and body movement may be detected by a thermometer, a camera, a radio wave sensor, etc., and the reliability of the detection result of the bioinformation by the capacitance sensor 212 may be determined based on the detection result. At this time, information indicating the reliability may be notified to the occupant. For example, when it is determined that the humidity is too low and the bioinformation cannot be accurately detected, information indicating that the reliability of the detection result of the bioinformation is low may be notified to the occupant. For example, when it is determined that the vibration of the vehicle is too large and the bioinformation cannot be accurately detected, information indicating that the reliability of the detection result of the bioinformation is low may be notified to the occupant. For example, when it is determined that the body movement of the occupant is too large and the bioinformation cannot be accurately detected, information indicating that the reliability of the detection result of the bioinformation is low may be notified to the occupant.

[0167] In the sixth to eighth embodiments, a plurality of capacitance sensors 212 may be provided on the seat cushion 207.

[0168] Ninth embodiment Patent Document 3 (JP 2019-1280 A) discloses a vehicle seat having an anchor to which a connector of a child seat can be coupled. A recess is formed in the seat cushion, and a bezel having an opening is disposed in the recess. The anchor is disposed within the bezel. A lid is removably attached to the opening of the bezel. A plurality of locking claws provided on the lid are engaged with a plurality of locking holes provided on the bezel, whereby the lid is attached to the bezel.

[0169] It is preferable that the lid be stably fixed to the bezel, but it is also preferable that the lid be easily removable from the bezel.

[0170] In view of the above background, an object of the present invention is to provide a vehicle seat that allows a lid to be easily removed.

[0171] In order to solve the above problems, the present invention provides a vehicle seat (301) comprising a seat cushion (303), a seat back (304) extending upward from a rear portion of the seat cushion, and a child seat mounting portion (310) for mounting a child seat, the child seat mounting portion comprising a recess (313) formed in the seat cushion or the seat back, an anchor (314) disposed in the recess to be coupled with a connector (311) of the child seat, and a receiving recess (317) for receiving the connector, and a bezel inserted in the recess. The bezel has a bezel (315) and a lid (318) closing the receiving recess, the anchor passes through the bezel and protrudes into the receiving recess, the lid has a plate portion (331) closing the open end of the receiving recess, a locking portion (332) provided on the back surface of the plate portion and removably and rotatably hooked to the anchor, and an abutment portion (333) provided on the back surface of the plate portion, and the bezel has a stopper (335) provided inside the receiving recess, and when the lid is in a predetermined rotational position relative to the anchor, the abutment portion abuts against the stopper.

[0172] According to this aspect, in a vehicle seat, the lid can be easily removed by utilizing the principle of leverage. When the lid is rotated, the abutment portion of the lid abuts against the stopper and becomes a fulcrum, and the locking portion can be released from the anchor with a small operating force.

[0173] In the above aspect, the lid may rotate between a first rotation position in which an edge of the plate portion is positioned along the opening end of the receiving recess, and a second rotation position in which the abutment portion abuts against the stopper.

[0174] According to this embodiment, when the lid is in the first rotation position, the lid can properly close the open end of the bezel.

[0175] In the above aspect, when the lid is in the second rotation position, a part of an edge of the plate portion may protrude outwardly from the receiving recess.

[0176] According to this embodiment, a user can hook his / her fingers on the edge of the plate and pull the lid outward from the bezel.

[0177] In the above aspect, the abutment portion may protrude from the back surface of the plate portion toward the inside of the receiving recess, and an operating portion (337) recessed toward the back surface side may be formed on the surface of the plate portion corresponding to the abutment portion.

[0178] According to this aspect, a user can rotate the lid by inserting a finger into the operating portion and pushing it in. As a result, the abutment portion of the plate abuts against the stopper and a part of the plate protrudes outward from the receiving recess.

[0179] In the above aspect, the abutment portion and the operating portion may be provided on an edge portion of the plate portion in a direction perpendicular to a rotation axis centered on the anchor.

[0180] According to this aspect, the user can easily rotate the lid.

[0181] In the above aspect, the operating portion may have an inclined wall (338) that is inclined toward the back surface side in a direction away from the locking portion.

[0182] According to this aspect, it is possible to guide the user's finger in the pressing direction of the operation portion.

[0183] In the above aspect, a protrusion (341) that abuts against the lid and holds the lid in the first rotation position may be provided on an inner surface of the receiving recess. The protrusion may abut against the abutment portion.

[0184] According to this aspect, the protrusion can hold the lid in the first position.

[0185] In the above aspect, the bezel may have a box-shaped main body portion (321) that forms the receiving recess, and a flange portion (324) that is provided on the periphery of the main body portion and that fits along the edge of the recess.

[0186] According to this aspect, the gap between the bezel and the recess can be closed by the flange portion.

[0187] In the above aspect, the main body portion may be formed with an anchor receiving groove (323) for receiving the anchor.

[0188] This aspect facilitates attachment of the bezel to the recess and the anchor.

[0189] As shown in FIG. 16, the seat 301 is provided on a floor 302 of an automobile and has a seat cushion 303 that supports the buttocks of a user, and a seat back 304 that extends upward from the rear of the seat cushion 303 and supports the back of the user. The seat 301 is for three people and includes a left seat 301A, a center seat 301B, and a right seat 301C. As shown in FIG. 17, the seat cushion 303 and the seat back 304 have a frame 306 that forms a skeleton, a pad 307 supported by the frame 306, and a cover material 308 that covers the pad 307. The frame 306 of the seat cushion 303 and the frame 306 of the seat back 304 are connected to each other. The frame 306 of the seat cushion 303 and the frame 306 of the seat back 304 may be connected to each other so as to be rotatable.

[0190] 16, a raised portion 303A is provided on the rear portion of the upper surface of the seat cushion 303. The raised portion 303A extends in the left and right directions. The raised portion 303A is disposed below the lower end of the seat back 304.

[0191] The seat 301 has a plurality of child seat attachment parts 310 for attaching child seats. A pair of left and right child seat attachment parts 310 is provided on a left seat 301A of the seat 301, and a pair of left and right child seat attachment parts 310 is provided on a right seat 301C of the seat 301.

[0192] As shown in FIG. 17, the child car seat has a pair of left and right connectors 311 that are detachably coupled to the child car seat attachment portion 310. Each connector 311 extends rearward from the lower part of the rear part of the child car seat. Each connector 311 has a receiving groove 311A ​​provided at its rear end, and a latch 311B that protrudes into the receiving groove 311A. Each receiving groove 311A ​​is recessed toward the front and penetrates from left to right. It is preferable that the connectors 311 comply with ISO-FIX, an international standard for a method of fixing a child car seat.

[0193] 17 and 18, each child seat attachment portion 310 has a recess 313 formed in the seat cushion 303 or the seat back 304, an anchor 314 disposed in the recess 313, a bezel 315 inserted into the recess 313, and a lid 318 that closes a receiving recess 317 formed in the bezel 315. The bezel 315 and the lid 318 are preferably made of resin.

[0194] In this embodiment, the recess 313 is provided in the raised portion 303A of the seat cushion 303. The recess 313 extends rearward from the front surface of the raised portion 303A. The recess 313 may penetrate the pad 307 constituting the raised portion 303A from front to rear. The cross section of the recess 313 is formed in a substantially rectangular shape.

[0195] The anchor 314 is joined to the frame 306 of the seat cushion 303. The anchor 314 is formed by bending a metal rod with a circular cross section. The anchor 314 has an anchor central portion 314A extending left and right within the recess 313, and left and right anchor end portions 314B extending rearward from both left and right ends of the anchor central portion 314A. The left and right anchor end portions 314B are joined to the frame 306 of the seat cushion 303.

[0196] The bezel 315 has a box-shaped bezel main body 321 that opens forward. The bezel 315 has a receiving recess 317 that opens forward inside the bezel main body 321. The bezel main body 321 has left and right side wall portions 321A whose faces face left and right, an upper wall portion 321B whose faces face up and down and connected to the upper edges of the left and right side wall portions 321A, a lower wall portion 321C whose faces face up and down and connected to the lower edges of the left and right side wall portions 321A, and a rear wall portion 321D whose faces face front and rear and connected to the rear edges of the left and right side wall portions 321A, the upper wall portion 321B, and the lower wall portion 321C. The receiving recess 317 is formed by the left and right side wall portions 321A, the upper wall portion 321B, the rear wall portion 321D, and the rear wall portion 321D.

[0197] An anchor receiving groove 323 is formed in the rear of the bezel main body 321. The anchor receiving groove 323 opens rearward and penetrates left and right through the bezel main body 321. Specifically, the anchor receiving groove 323 penetrates the rear wall 321D from front to rear and extends to both left and right ends of the rear wall 321D, and extends forward from the rear ends of the left and right side walls 321A.

[0198] Bezel 315 has a flange portion 324 provided on the periphery of bezel main body 321 and along the edge of recess 313. Flange portion 324 has a surface facing forward and backward, and extends from the front edge of bezel main body 321 outward from bezel main body 321. Flange portion 324 is provided in an annular shape along the front edge of bezel main body 321.

[0199] The bezel body 321 is inserted into the recess 313 from the front, and the anchor central portion 314A protrudes into the anchor receiving groove 323. The bezel 315 is attached to the recess 313 by the anchor receiving groove 323 being engaged with the anchor central portion 314A. The anchor receiving groove 323 may be provided with a locking protrusion for locking the anchor central portion 314A. When the bezel 315 is attached to the recess 313, the flange portion 324 covers the edge of the front end of the recess 313. The end of the skin material 308 may be disposed on the back side of the flange portion 324 or within the recess 313. When the bezel 315 is attached to the recess 313, the anchor 314 passes through the bezel 315 and protrudes into the receiving recess 317. Most of the anchor central portion 314A is disposed within the receiving recess 317. The receiving recess 317 receives the connector 311 of the child seat, and the connector 311 mates with the anchor central portion 314A within the receiving recess 317.

[0200] 18 to 20, the lid 318 has a plate portion 331 that closes the open end of the receiving recess 317, a locking portion 332 that is provided on the back surface of the plate portion 331 and is detachably and rotatably hooked onto the anchor 314, and a contact portion 333 that is provided on the back surface of the plate portion 331. The plate portion 331 is formed in a flat plate shape and is disposed at the open end of the receiving recess 317 so that its surface faces forward and backward.

[0201] The locking portion 332 has an upper locking portion 332A and a lower locking portion 332B. The upper locking portion 332A and the lower locking portion 332B each protrude backward from the back surface, i.e., the rear surface, of the plate portion 331 and extend left and right. The upper locking portion 332A and the lower locking portion 332B are arranged vertically apart from each other. Between the upper locking portion 332A and the lower locking portion 332B, a locking groove 332C that rotatably receives the anchor central portion 314A is formed. The locking groove 332C extends left and right. The locking groove 332C detachably receives the anchor central portion 314A. When a load of a predetermined value or more is applied in a direction to pull the anchor central portion 314A out of the locking groove 332C, the anchor central portion 314A can come out of the locking groove 332C. The distance between the upper locking portion 332A and the lower locking portion 332B, which form the open end of the locking groove 332C, is set to be smaller than the diameter of the anchor center portion 314A. The upper locking portion 332A and the lower locking portion 332B may have a claw portion or a protrusion at their rear ends for locking the anchor center portion 314A.

[0202] The locking portion 332 is locked to the anchor central portion 314A, whereby the lid 318 is disposed in the receiving recess 317. The lid 318 is supported by the anchor central portion 314A so as to be rotatable within a predetermined rotation range around the anchor central portion 314A. In a state in which the lid 318 is supported by the anchor central portion 314A, the plate portion 331 is disposed at the opening end of the receiving recess 317. As a result, the opening end of the receiving recess 317 is closed by the plate portion 331. When the lid 318 is in a first rotation position relative to the anchor 314, the plate portion 331 is disposed along the opening end of the receiving recess 317.

[0203] The bezel 315 has a stopper 335 provided on the inside of the receiving recess 317. The back surface of the plate portion 331 is provided with an abutment portion 333 that can abut against the stopper 335. When the lid 318 is in the second rotation position with respect to the anchor 314, the abutment portion 333 abuts against the stopper 335. In this embodiment, the stopper 335 is provided on the upper wall portion 321B, and the abutment portion 333 is provided on the upper end of the plate portion 331. In another embodiment, the stopper 335 may be provided on the lower wall portion 321C, and the abutment portion 333 may be provided on the lower end of the plate portion 331. The stopper 335 protrudes downward from the lower surface of the upper wall portion 321B. The stopper 335 may also be coupled to the rear wall portion 321D.

[0204] The abutment portion 333 protrudes from the back surface of the plate portion 331 toward the inside of the receiving recess 317. An operation portion 337 recessed toward the back surface side is formed on the front surface of the plate portion 331 corresponding to the abutment portion 333. The abutment portion 333 and the operation portion 337 are provided on the edge portion of the plate portion 331 in the direction perpendicular to the rotation axis centered on the anchor central portion 314A. In this embodiment, the abutment portion 333 and the operation portion 337 are provided on the upper edge portion of the plate portion 331.

[0205] The operating portion 337 has an inclined wall 338 that is inclined toward the rear surface side in a direction away from the locking portion 332. When the lid 318 is in the first rotation position, the inclined wall 338 is inclined upward and toward the rear.

[0206] The inner surface of the receiving recess 317 is provided with a protrusion 341 that abuts against the lid 318 and holds the lid 318 in the first rotation position. The protrusion 341 may abut against the abutment portion 333. The protrusion 341 may be a detent that protrudes downward from the lower surface of the upper wall portion 321B. The protrusion 341 is disposed closer to the opening end of the receiving recess 317 than the stopper 335, that is, on the front side. When the lid 318 is in the first rotation position, the protrusion 341 abuts against the upper edge of the abutment portion 333 from behind. This prevents the abutment portion 333 from moving backward by the protrusion 341. When the rearward load applied to the abutment portion 333 reaches or exceeds a predetermined value, the lid 318 bends, and the abutment portion 333 can move backward over the protrusion 341.

[0207] The operation of the seat 301 will be described. When the child seat is removed from the seat 301, as shown in FIG. 18, the lid 318 is attached to the anchor central portion 314A in order to close the receiving recess 317 of the bezel 315. At this time, the lid 318 is supported by the anchor central portion 314A at the locking portion 332 and is disposed in the first rotation position. The protrusion 341 abuts against the abutment portion 333, thereby restricting the rotation of the lid 318 and maintaining the lid 318 in the first rotation position. The lid 318 closes the receiving recess 317 of the bezel 315, thereby hiding the anchor 314 and the receiving recess 317.

[0208] When attaching the child seat to the seat 301, the user needs to remove the lid 318 from the anchor central portion 314A in order to expose the anchor central portion 314A to the outside. The user first inserts a finger into the operating portion 337 and pushes the operating portion 337 backward. Since the operating portion 337 is formed by the recess 313 recessed backward, the position of the finger can be easily determined. Moreover, since the operating portion 337 has the inclined wall 338, the insertion direction of the finger can be even more easily determined.

[0209] When a user pushes his / her finger backward with a load equal to or greater than a predetermined value, the lid 318 bends, and the abutment portion 333 moves backward over the protrusion 341. This causes the lid 318 to rotate about the anchor central portion 314A. As shown in Fig. 21, the lid 318 rotates until the abutment portion 333 abuts against the stopper 335. When the abutment portion 333 abuts against the stopper 335, the lid 318 is in the second rotation position.

[0210] When the lid 318 is in the second rotation position, a part of the edge of the plate portion 331 protrudes outward from the receiving recess 317. In detail, an edge of the plate portion 331 on the side opposite the abutment portion 333 in a direction perpendicular to the rotation axis centered on the anchor 314 protrudes outward from the receiving recess 317. In this embodiment, a lower edge of the plate portion 331 protrudes forward from the receiving recess 317. This allows a user to hook a finger from behind on the edge (lower edge) of the plate portion 331 protruding outward from the receiving recess 317 and pull it forward.

[0211] When the lid 318 is in the second rotation position, the user can pull the lower edge of the plate portion 331 forward to disengage the anchor central portion 314A from the locking portion 332. At this time, based on the principle of leverage, the lower edge of the lid 318 becomes the point of force, the contact portion between the abutment portion 333 and the stopper 335 becomes the fulcrum, and the locking portion 332 becomes the point of action. This allows the locking portion 332 to be disengaged from the anchor central portion 314A with a relatively small force.

[0212] By removing the lid 318 from the anchor central portion 314A, the receiving recess 317 opens and the anchor central portion 314A is exposed to the outside. As a result, as shown in Fig. 17, the connector 311 of the child seat can be inserted into the receiving recess 317 and connected to the anchor central portion 314A.

[0213] The sheet 301 according to the embodiment utilizes the principle of leverage to facilitate removal of the lid 318. When the lid 318 is rotated, the abutment portion 333 of the lid 318 abuts against the stopper 335 and serves as a fulcrum, allowing the locking portion 332 to be released from the anchor 314 with a relatively small operating force.

[0214] When the lid 318 is in the first rotation position, the lid 318 can properly close the open end of the bezel 315. The protrusion 341 can hold the lid 318 in the first position.

[0215] Since the operating portion 337 is recessed from the front surface to the rear surface of the plate portion 331, the user can insert his / her finger into the operating portion 337 and push it in to rotate the lid 318. This causes the abutting portion 333 of the plate to abut against the stopper 335, and a part of the plate to protrude outward from the receiving recess 317. In addition, the inclined wall 338 of the operating portion 337 can guide the user's finger in the pressing direction of the operating portion 337.

[0216] Although the specific embodiment has been described above, the present invention is not limited to the above embodiment and can be modified in a wide range of ways.

[0217] For example, the vibration transmission system according to the first to fifth embodiments may be applied to public vehicles such as bullet trains, trains, and buses. In this case, sleeping passengers may be woken up by vibration. The timing of the vibration may be set by the passengers themselves using application software on a smartphone or the like.

[0218] For example, in the sixth to eighth embodiments, if it is determined that the capacitance sensor 212 is not in proper contact with the occupant, the occupant may be notified of this by sound, light, vibration, or the like.

[0219] For example, in the ninth embodiment, the shapes of the bezel 315 and the lid 318 may be inverted upside down. Also, the child seat attachment portion 310 may be provided at the lower end of the seat back 304. Also, the child seat attachment portion 310 may be provided on the front seat (passenger seat). [Explanation of symbols]

[0220] 102:Sheet 112: Vibration transmission device 113: Vibration sound suppression device 117: Frame 120A: First vibration transmission device 120B: Second vibration transmission device 202:Sheet 207: Seat cushion 208: Seat back 208A: Bank 212: Capacitive sensor 213: Epidermis 214: Pad 214A: Slit 214B: Recess 215: Lid 216: Air Cell 303: Seat cushion 304: Seat back 310: Child seat attachment point 311: Connector 313: Recess 314: Anchor 314A: Center of anchor 315: Bezel 317: Receiving recess 318: Lid 321: Bezel body 323: Anchor receiving groove 324: Flange part 331: Plate section 332: Locking part 333: Contact part 335: Stopper 337 :Operation unit 338: Inclined wall 341: Convex

Claims

[Claim 1] A vibration transmission system for a vehicle, comprising: A vibration transmission device provided in a vehicle seat for transmitting vibrations to an occupant; a vibration noise suppression device provided in the vehicle and suppressing the noise of the vibration caused by the vibration transmission device; Equipped with The vibration noise suppression device is a vibration transmission system for a vehicle that outputs a vibration waveform in opposite phase to a vibration waveform of the vibration transmission device.

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