This application claims the benefit of Japanese Patent Application No. 2017-101724 filed on May 23, 2017 and No. 2018-47797 filed on Mar. 15, 2018 with the Japan Patent Office, the entire disclosures of which are incorporated herein by reference.
The present disclosure relates to a vehicle seat to be mounted on a vehicle.
For example, a relaxing pillow for driver disclosed in Japanese Unexamined Patent Application Publication No. 2003-144266 requires an inside of the pillow to be filled with an air compressed to a pressure equal to or higher than an atmospheric pressure.
In order to use the relaxing pillow for driver disclosed in the above-mentioned publication, it becomes necessary for a vehicle to be provided with an air pump for filling an inside of the pillow with the air compressed (hereinafter, compressed air) to a pressure equal to or higher than the atmospheric pressure. However, it is highly probable that a common vehicle such as an automobile is not equipped with the air pump.
Thus, it is difficult to use an equipment which requires compressed air (hereinafter, pneumatic equipment) such as the relaxing pillow for driver. The present disclosure discloses an example of a vehicle seat which allows easy use of a pneumatic equipment.
One aspect of the present disclosure provides a vehicle seat to be mounted on a vehicle. The vehicle seat includes an output portion configured to output an air having a pressure equal to or higher than an atmospheric pressure to an outside of the vehicle seat. Thereby, an occupant who uses the vehicle seat can easily use the pneumatic equipment.
The vehicle seat may be configured as follows.
The vehicle seat may include an air pump that supplies compressed air, and an air bag that expands in receipt of the compressed air supplied from the air pump. The air pump may supply the compressed air to the output portion. In this way, it is no longer necessary to include a component for receiving the compressed air from an equipment other than the vehicle seat.
The vehicle seat may include a retaining mechanism for retaining a coupling member coupled to the output portion. The retaining mechanism may be configured to detach the coupling member from the output portion, when a force beyond a specified magnitude is applied.
In this way, when a force beyond the specified magnitude is applied to the pneumatic equipment, the coupling member can be detached from the output portion.
The coupling member may include a fitting portion. The output portion may be provided at least at an upper end of a seatback, and the fitting portion of the coupling member may be detachably fitted to the output portion. The fitting portion may be configured to be detachable from the output portion, when a force including a component toward a seat front side is applied to the fitting portion.
In this way, when the force including the component toward the seat front side is applied to the pneumatic equipment, the coupling member can be detached from the output portion.
The output portion may be provided at an end in a seat-width axis of the upper end of the seatback.
An example embodiment of the present disclosure will be described hereinafter with reference to the accompanying drawings, in which:
An “embodiment” described below shows an example embodiment within the technical scope of the present disclosure. In other word, matters specifying the invention described in the claims are not limited to the specific configuration, structure, etc. shown in the embodiment below.
Arrows and the like indicating directions attached to respective figures are provided to make it easy to understand the relationship between the respective figures. Arrows and the like (directions) attached to the respective figures do not limit the scope of the present disclosure.
At least one member or portion is provided for a member or portion at least described with a reference numeral, except when that member or portion is explicitly described as “one member” or the like. In other words, two or more such members may be provided if there is no mention of “one member” or the like. The “occupant” in the present application refers to a vehicle occupant or a user of a vehicle seat.
The present embodiment provides a vehicle seat. A vehicle seat 1, as shown in
In at least one of the seat cushion 3 and the seatback 5, at least one air bag (bladder) 7 (multiple air bags 7, in the present embodiment) is buried for locally applying pressure to the body of the occupant. The term “air bag” in this specification does not specifically refer to conventional “safety air bags” designed to inflate by chemical reaction (a chemical explosion) for safety purposes, such as an air bag in the steering wheel. However, the “air bag” of this specification may be inflated for safety, for example during a collision, or a roll over, or activation of automatic braking, or detection of skidding, or detection of locked brakes, etc. Further, the air bag of this specification may be combined with a chemical reaction for extremely rapid inflation, or with a very high pressure tank for extremely rapid inflation. In other words, safety is not the primary purpose in some embodiments, but may be the primary purpose in other embodiments.
The multiple air bags 7 expand toward the skin (the body of the occupant) when an air compressed (hereinafter, compressed air) to a pressure equal to or higher than an atmospheric pressure is filled in. The air bags 7 implement a massage (acupressure) function for applying pressure to the body of the occupant.
Supply control of the compressed air to each air bag 7 and discharge control of the compressed air from each air bag 7 are performed by the air pump 11 and at least one valve 12, as shown in
Each valve 12 according to the present embodiment is preferably an electromagnetic three-way valve. Each valve 12 selectively switches a state of the air bag 7 to one of a state in which the air pump 11 is in communication with the air bag 7 (a charging state), a state in which the air bag 7 is in communication with the atmosphere (a venting state), and a state in which the inlet and the outlet are closed (a closed state).
The air pump 11 generates compressed air. Operation of the air pump 11 and each valve 12 is controlled by a controller 10. That is, when expanding the air bag 7, the controller 10, operates the air pump 11 and brings the air bag 7 into communication with the air pump 11 (charging state). When contracting the air bag 7, the controller 10 brings the air bag 7 into communication with the atmosphere (venting state).
The controller 10 is configured by a microcomputer including a CPU, a ROM and a RAM. A program for controlling the operation of the air pump 11 and each valve 12 is prestored in a nonvolatile storage such as a ROM.
The vehicle seat 1, as shown in
The output portion 20 is provided in any part of the vehicle seat 1 (including an inside of the vehicle seat 1). The output portion 20 according to the present embodiment is provided at an end 51 in a seat-width axis of an upper end of the seatback 5 (at a so-called shoulder of the seatback).
The end 51 may be a portion where a buckle (not shown) of a seat belt (not shown) is provided. The portion where a buckle is provided is, for example, a right side portion in the seat-width axis, in a vehicle seat mounted on a vehicle left side.
The controller 10 operates the air pump 11 when an external output switch 21 is turned on. As a result, compressed air is output from the output portion 20 to the outside. The external output switch 21 according to the present embodiment is buried in the vehicle seat 1 and is not exposed to the outside.
In the present embodiment, when the output portion 20 is coupled to a pneumatic equipment (for example, an air pillow) via a coupling member 30 (see
The coupling member 30, as shown in
The switch hole 33 is provided at a position near an outlet of the compressed air which forms the output portion 20. Inside the switch hole 33, that is, inside the vehicle seat 1, the external output switch 21 is arranged as shown in
Thus, when the switch pressing portion 32 is inserted to the switch hole, the switch pressing portion 32 is brought into contact with a movable part 21A of the external output switch 21. As a result, the external output switch 21 is turned on.
In the present embodiment, a permanent magnet (not shown) is buried in at least one of: (i) a plate 34 (see
A packing made of rubber (for example, an O-ring made of nitrile rubber) 35 is attached to an inner peripheral surface of the output portion 20 (outlet) or an outer surface of the male joint 31. The packing 35 is an example of a sealing member for sealing leakage of compressed air.
In the present embodiment, a retaining mechanism includes the permanent magnet, the magnetic member, and the packing 35. The retaining mechanism maintains a state in which the coupling member 30 is coupled to the output portion 20. That is, an attraction force generated between the permanent magnet and the magnetic member, and a friction force generated at a contact portion between the packing 35 and the male joint 31, become a retaining force for retaining the coupling state. Mechanical mating/retaining mechanisms may also be used.
The retaining mechanism is configured such that the coupling member 30 can be detached from the output portion 20 when a force beyond a specified magnitude that causes the coupling member 30 to be detached from the output portion 20 (hereinafter, a detachment force) is applied. That is, the retaining mechanism has a specified magnitude of retaining force.
The vehicle seat 1 includes the output portion 20 that can output compressed air. As a result, the occupant who uses the vehicle seat 1 can easily use a pneumatic equipment such as an air pillow.
The vehicle seat 1 includes the air pump 11 that can supply compressed air to the output portion 20. As a result, no component is necessary for receiving supply of compressed air from an equipment other than the vehicle seat 1.
The retaining mechanism is configured such that the coupling member 30 can be detached from the output portion 20 when the detachment force is applied. As a result, when a force beyond the specified magnitude is applied to the pneumatic equipment, the coupling member 30 can be detached from the output portion 20.
Therefore, when, for example, a relaxing pillow (not shown) for driver is used as the external pneumatic equipment, and when an inertia force toward a seat front side is applied to the vehicle seat 1 and a force beyond the detachment force is applied to the coupling member 30, the relaxing pillow for driver is detached from the output portion 20.
In
In
In other words, the plate 34 faces the seat front side so that a central axis of the fitting hole which forms the output portion 20 is tilted slightly forward with respect to the up-down direction. That is, the occupant can view the fitting hole forming the output portion 20 from the seat front side.
The male joint 31 is detachable from the output portion 20 when a force containing a component toward the seat front side is applied to the male joint 31.
As a result, when the force containing the component toward the seat front side is applied to the pneumatic equipment such as the relaxing pillow for driver, the coupling member 30 can be reliably detached from the output portion 20.
In
In
For example, the external output switch 21 may be eliminated, and an accumulator tank which stores compressed air and a check valve which opens when the coupling member 30 is coupled to the output portion 20 may be provided. As a result, when the coupling member 30 is coupled to the output portion 20, the check valve opens and compressed air is supplied from the accumulator tank to a pneumatic equipment.
It is preferable that the above-described accumulator tank is maintained by the controller 10 such that compressed air equal to or higher than a specified pressure is accumulated at all time. The accumulator tank and the air pump 11 may be provided either inside the vehicle seat 1 or outside the vehicle seat 1.
Also, for example, the vehicle seat 1 may be configured such that (a) the air pump 11 starts to operate when the coupling member 30 is coupled to the output portion 20 and stops when a specified time elapses after the start of the air pump 11, or (b) the air pump 11 stops when a discharge pressure of the air pump 11 is beyond a specified discharge pressure.
For example, the air bag 7 may implement a support function for retaining a seated posture of the occupant.
For example, the retaining mechanism may be configured by an elastic locking structure such as snap fit.
The vehicle seat 1 can be also applied to a seat for use in a vehicle such as railway vehicles, ships, and aircrafts, as well as to a stationary type seat for use such as in theatres and at home.
Furthermore, the present disclosure is not limited to the above-described embodiments as long as the present disclosure meets the gist of the invention recited in the claims. Thus, the particular configuration of the coupling member 30, the position of the output portion 20 and the like are not limited to those of the above-described embodiments. It is a matter of course that at least two embodiments among the plurality of embodiments described above may be combined.
Number | Date | Country | Kind |
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2017-101724 | May 2017 | JP | national |
2018-047797 | Mar 2018 | JP | national |
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Entry |
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Chinese Office Action in the counterpart Chinese patent application No. 201810494726.3, dated May 20, 2020 (and a machine-generated English translation thereof). |
Chinese Office Action in the counterpart Chinese patent application No. 201810494726.3, dated Nov. 10, 2020 (and a machine-generated English translation thereof). |
Number | Date | Country | |
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20180339625 A1 | Nov 2018 | US |