JP2021097859A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat for effectively achieving both of a massage function and a lumber support function.SOLUTION: A vehicle seat 1 includes: a frame 4 for forming a seat shape; a pad 5 mounted on the frame 4; a seat cover 6 for covering a front surface of the pad 5; a lumber support mechanism 7 stored in the pad 5 and including expansible first bladders 7a-7d; a massage mechanism 8 stored in the pad 5 and including expansible second bladders 8a-8h; and an air supply/exhaust device 10 for supplying compressed air to expand the first bladders 7a-7d and the second bladders 8a-8h, exhausting compressed air, and contracting the first bladders 7a-7d and the second bladders 8a-8h.SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle seat, and more particularly to a vehicle seat having a massage function and a lumbar support function.

Conventionally, there has been known a vehicle seat provided with an airbag for massage and an airbag for lumbar support that supports the posture of the seated person inside a seat cover corresponding to the lumbar spine of the seated person.

For example, Patent Document 1 discloses a vehicle seat 1 including a first airbag 50 for massage and a second airbag 60 for lumbar support. The first airbag 50 and the second airbag 60 are in contact with each other in an overlapping state through the through hole 31 of the pad member 30, and the second airbag 60 is configured to support the first airbag 50. .. The reference numeral is the reference numeral in Patent Document 1.

Japanese Unexamined Patent Publication No. 2005-87604

However, in the vehicle seat 1 described in Patent Document 1 as described above, the second airbag 60 provides lumbar support via the first airbag 50, and the first airbag 50 is unstable. Since the massage is performed by expanding and contracting on the bag 60, there is a risk that the massage function and the lumbar support function cannot be effectively compatible with each other.

Therefore, a technical problem to be solved in order to effectively balance the massage function and the lumbar support function arises, and an object of the present invention is to solve this problem.

In order to achieve the above object, the vehicle seat according to the present invention is for a pad vehicle including a frame forming a seat shape, a pad attached to the frame, and a seat cover covering the pad surface. A lumbar support mechanism that is a seat and has a first bladder that is held by the pad and can be expanded and contracted, and a massage mechanism that is held by the pad and has a second bladder that can be expanded and contracted. It is provided with a supply / discharge device that supplies a fluid that expands the first bladder and the second bladder, discharges the fluid, and contracts the first bladder and the second bladder.

According to this configuration, the seated person can maintain a posture in which the lumbar region is stable by expanding and contracting the first bladder and deforming the pad so as to be in close contact with the seated person's body. In addition, by expanding and contracting the second bladder, it is possible to apply acupressure to the shoulder, back, waist, etc. of the seated person. Further, it is possible to receive acupressure while the lumbar region is maintained in a stable posture, and it is possible to effectively balance the lumbar support function and the massage function.

Further, it is preferable that the vehicle seat according to the present invention further includes a temperature control device for controlling the temperature of the fluid supplied to the first bladder and the second bladder.

According to this configuration, the lumbar support function and the massage function can be comfortably performed by heating or cooling the fluid supplied to the first bladder and the second bladder.

Further, in the vehicle seat according to the present invention, it is preferable that a plurality of the first bladder is provided along the height direction of the backrest portion.

According to this configuration, a plurality of first bladder provided on the backrest can perform the lumbar support function.

Further, in the vehicle seat according to the present invention, it is preferable that a plurality of the first bladder is provided along the depth direction of the seat portion.

According to this configuration, a plurality of first bladder provided on the seat can perform the lumbar support function.

Further, in the vehicle seat according to the present invention, it is preferable that the plurality of first bladder is individually expandable and contractible.

According to this configuration, the lumbar support function can be appropriately implemented by individually expanding and contracting the plurality of first bladder according to the body shape of the seated person and the like.

Further, in the vehicle seat according to the present invention, it is preferable that the supply / discharge device periodically supplies or discharges the fluid to the second bladder according to a preset program.

According to this configuration, the seated person can receive comfortable acupressure by periodically expanding and contracting the second bladder.

According to the present invention, acupressure can be received while the lumbar region is maintained in a stable posture, and the lumbar support function and the massage function can be effectively compatible with each other.

The perspective view which shows the vehicle seat which concerns on one Embodiment of this invention. Exploded view of vehicle seat assembly. The schematic diagram which shows the structure of the 2nd bladder. FIG. 4A is a schematic view showing how the first bladder is inflated, and FIG. 4B is a schematic view showing how the second bladder is inflated. A time chart showing the air supply pattern of the bag body.

An embodiment of the present invention will be described with reference to the drawings. In the following, when referring to the number, numerical value, quantity, range, etc. of components, it is limited to the specific number unless it is clearly stated or in principle it is clearly limited to the specific number. It is not a thing, and it may be more than or less than a specific number.

In addition, when referring to the shape and positional relationship of components, etc., unless otherwise specified or when it is considered that this is not the case in principle, those that are substantially similar to or similar to the shape, etc. shall be used. Including.

In addition, the drawings may be exaggerated by enlarging the characteristic parts in order to make the features easy to understand, and the dimensional ratios and the like of the components are not always the same as the actual ones. Further, in the cross-sectional view, hatching of some components may be omitted in order to make the cross-sectional structure of the components easy to understand.

FIG. 1 is a perspective view showing a vehicle seat 1 according to an embodiment of the present invention. FIG. 2 is an assembled exploded view of the main configuration of the vehicle seat 1. FIG. 3 is a partially vertically exploded view of the vehicle seat 1.

In the vehicle seat 1, the backrest portion 2 and the seat portion 3 are connected via a reclining mechanism (not shown), and the backrest portion 2 is configured to be capable of reclining operation.

The backrest portion 2 includes a frame 4, a pad 5, and a seat cover 6. The frame 4, the pad 5, and the seat cover 6 are provided in this order from the rear to the front in the front-rear direction L.

The frame 4 forms the shape of the backrest portion 2. The frame 4 is configured by mounting a spring member 4b inside the skeleton 4a.

The pad 5 is mounted on the frame 4 and elastically supports the seated person. The material of the pad 5 is, for example, urethane. The thickness of the pad 5 is set to, for example, 4 mm.

The seat cover 6 covers the surface of the backrest portion 2 to form a seat surface on which the seated person sits.

The backrest portion 2 is provided with a lumbar support mechanism 7 and a massage mechanism 8.

The lumbar support mechanism 7 supports the waist and back of the seated person, who tends to concentrate stress when seated. The lumbar support mechanism 7 includes four first bladder 7a to 7d provided at intervals in the vertical direction H, and a back plate 7e for supporting the first bladder 7a to 7d.

The first bladder 7a to 7d are provided between the frame 4 and the pad 5 and at a position corresponding to the lower part of the backrest portion 2, specifically, the waist and back of the seated person. Further, the first bladder 7a to 7d are each housed in the first storage hole 5a penetrating the pad 5 in the front-rear direction L. The first bladder 7a to 7d are formed to be wide in the width direction W. The first bladder 7a to 7d are so-called airbags, for example, made of resin. The first bladder 7a to 7d are formed to have a flat cross section in the contracted state.

The massage mechanism 8 massages the shoulders, back, waist, etc. of the seated person. The massage mechanism 8 includes eight second bladder 8a to 8h provided with a gap in the vertical direction H. The second bladder 8a to 8h are each accommodated in the second accommodating hole 5b penetrating the pad 5 in the front-rear direction L. As shown in FIG. 3, the second bladder 8a to 8h are arranged so that two sets are arranged in the width direction W and four sets are arranged in the vertical direction H. The second bladder 8a to 8h are so-called airbags, for example, made of resin. The second bladder 8a to 8h are supported by the back plate 7e, and are provided on the same plane as the first bladder 7a to 7d along the vertical direction H. The second bladder 8a to 8h are not limited to those integrally configured with the first bladder 7a to 7d via the back plate 7e.

A set of second bladder 8a to 8h arranged in the width direction W is provided so as to be arranged alternately with the first bladder 7a to 7d in the vertical direction H. The first bladder 7a to 7d and the second bladder 8a to 8h are formed so as not to protrude from the surface of the pad 5 in the contracted state and to protrude from the surface of the pad 5 in the expanded state.

The seat portion 3 has a known configuration including a frame, a pad, a seat cover, and the like, and detailed description thereof will be omitted.

The operation of the vehicle seat 1 is controlled by the controller 9. The controller 9 controls each of the components constituting the vehicle seat 1 according to an instruction input by the seated person via an input device (not shown) or the like. The controller 9 is composed of, for example, a CPU, a memory, and the like.

The vehicle seat 1 further includes an air supply / exhaust device 10. The air supply / exhaust device 10 includes a pump 10a and an air tube 10b.

The pump 10a is connected to the air supply / exhaust device 10 and supplies compressed air to the air supply / exhaust device 10.

The air tube 10b connects the air supply / exhaust device 10 to the first bladder 7a to 7d and the second bladder 8a to 8h, and supplies the first bladder 7a to 7d and the second bladder 8a to 8h. The compressed air that is exhausted flows inside.

The air supply / exhaust device 10 includes solenoid valves (not shown) corresponding to the first bladder 7a to 7d and the second bladder 8a to 8h, respectively. The opening / closing control of the solenoid valve is executed by the controller 9. By opening and closing the solenoid valve, air is supplied by the pump 10a, the expanded state of the first bladder 7a to 7d and the second bladder 8a to 8h is maintained, or the inside of the first bladder 7a to 7d and the second bladder 8a to 8h. The exhaust of compressed air can be switched.

The fluid that expands the first bladder 7a to 7d and the second bladder 8a to 8h is not limited to the above-mentioned compressed air, and may be a fluid such as another gas or a liquid such as water.

Further, the seat 1 for a seat vehicle may be provided with a temperature control device for preliminarily controlling the temperature of the fluid supplied to the first bladder 7a to 7d and the second bladder 8a to 8h. For example, it is conceivable to control the temperature of the fluid supplied by the pump 10a with a chiller or the like. By heating or cooling the fluid, the seated person can sit comfortably.

Next, the operation of the vehicle seat 1 will be described with reference to the drawings. First, the vehicle seat 1 has a lumbar support function for supporting the waist of the seated person and a massage function for massaging the shoulders, back, waist, etc. of the seated person with acupressure.

[Lumber support function]
First, when the controller 9 receives an activation command of the lumbar support function via an input device (not shown) of the seated person, the lumbar support operation is started.

For example, the input device includes a button linked to the expansion of all the first bladder 7a-7d, and the controller 9 corresponds to the first bladder 7a-7d while the seated person presses this button. The solenoid valve is opened, and the compressed air is uniformly supplied from the pump 10a to the first bladder 7a to 7d, while the expanding first pladas 7a to 7d are pushed back by the seater's body pressure and the seated person. It deforms along the waist and back of the body. Then, when the seated person stops pressing the button, it is conceivable to close the solenoid valve to stop the expansion of the first bladder 7a to 7d. In this way, the seated person can uniformly inflate the first bladder 7a to 7c forward in the front-rear direction L. FIG. 4A schematically shows a state in which all the first bladder 7a to 7d provided side by side in the vertical direction H are expanded.

Further, the input device includes four buttons linked to the expansion of any one of the first bladder 7a to 7d, and the controller 9 is pressed while the seated person presses any button. The solenoid valve corresponding to the button is opened, and the compressed air is supplied from the pump 10a to the first bladder 7a to 7d corresponding to the solenoid valve in the open state, and the expanding first platters 7a to 7d are seated. When it is pushed back by body pressure and deformed along the waist and back of the seated person, and the seated person stops pressing the button, the solenoid valve is closed to maintain the expansion amount of the first bladder 7a to 7d. It is conceivable to configure in. In this way, the first bladder 7a to 7d can be individually bulged forward in the front-rear direction L.

In this way, by inflating the first bladder 7a to 7d provided side by side in the vertical direction H to an arbitrary size according to the body shape of the seated person, the seated person has the backrest portion 2 with the body. The seat cover 6 can be deformed so as to be in close contact with the seat cover 6.

Then, when the controller 9 receives a command to stop the lumbar support operation via an input device (not shown) of the seated person, the controller 9 opens the solenoid valve and contracts the expanded first bladder 7a to 7d by the body pressure of the seated person. As a result, the lumbar support operation is terminated.

The controller 9 has a function of storing the degree of expansion / contraction of the first bladder 7a to 7d once set by the seated person, and it is preferable that the input device includes a button or the like for calling the shape of the desired pad 5. .. As a result, when the button for calling the shape of the pad 5 that the seater likes is pressed, the first bladder 7a to 7d expands to a pre-stored state without requiring fine adjustment, so that the lumbar support setting work is performed. Can be simplified.

[Massage function]
First, when the controller 9 receives a command to activate the massage function via an input device (not shown) of the seated person, the controller 9 starts the massage operation.

The controller 9 opens and closes the solenoid valve according to a program stored in advance, and expands and contracts the second bladder 8a to 8h.

Specifically, when the solenoid valve is opened, the compressed air supplied from the pump 10a is supplied to the second bladder 8a to 8h corresponding to the solenoid valve in the open state, and the second bladder 8a to 8h expands. To do. Further, if the solenoid valve is closed while the second bladder 8a to 8h are inflated, the second bladder 8a to 8h is maintained in the inflated state. Further, when the solenoid valve is opened in a state where the second bladder 8a to 8h is expanded, the second bladder 8a to 8h contracts due to the pressure of the seated person. In this way, the second bladder 8a-8h are individually expanded and contracted.

FIG. 4B schematically shows a state in which the second bladder 8a to 8h are inflated. In this case, the second bladder 8a to 8h bulge from the surface of the pad 5 to the front side in the front-rear direction L and make point contact with the shoulder, back, etc. of the seated person to perform acupressure.

In this way, by inflating the second bladder 8a to 8h so as to bulge from the surface of the pad 5, the shoulder, back, waist, etc. of the seated person can be effectively acupressured.

The controller 9 may periodically expand and contract the second bladder 8a to 8h at a preset timing.

For example, FIG. 5A is a time chart showing an air supply pattern when the second bladder 8a to 8h are expanded one by one on the left and right. With such an air supply pattern, acupressure can be applied in order from above to below in the vertical direction H of the backrest portion 2.

Further, FIG. 5B is a time chart showing an air supply pattern when the second bladder 8a to 8h are contracted in pairs on the left and right. With such an air supply pattern, it is possible to apply acupressure over a wide range in the vertical direction H for a relatively long time.

Further, the controller 9 may change the intensity of the massage by controlling the amount of expansion of the second bladder 8a to 8h.

Then, when the controller 9 receives a command to stop the massage operation via the seater's input device or the like, the controller 9 opens the solenoid valve and contracts the expanded second bladder 8a to 8h by the seater's body pressure. End the massage operation.

The vehicle seat 1 is not limited to one in which only one of them is performed, and the lumbar support function and the massage function may be performed at the same time. By performing both functions at the same time, the seated person can receive acupressure while the lumbar region is maintained in a stable posture, and both functions can be effectively linked.

Further, when the lumbar support function and the massage function are performed "simultaneously", it means that one of the lumbar support function and the massage function is performed in advance and the other is performed.

Further, in the present embodiment, the case where the lumbar support mechanism 7 and the massage mechanism 8 are provided on the backrest portion 2 has been described as an example, but the lumbar support mechanism 7 and the massage mechanism 8 may be provided on the seat portion 3.

When the lumbar support mechanism 7 is provided on the seat portion 3, for example, a configuration in which the first lumbar is expanded so as to sandwich a wide range from the lumbar region to the thigh portion of the seated person from both sides in the width direction W can be considered.

Further, when the massage mechanism 8 is provided on the seat portion 3, for example, a configuration in which the second lumbar is expanded so as to press the rear surface of the thigh portion of the seated person can be considered.

In this way, the vehicle seat 1 according to the present embodiment maintains a posture in which the lumbar region is stable by expanding and contracting the first bladder 7a to 7d and bringing the seat cover 6 into close contact with the body of the seated person. be able to. Further, by expanding and contracting the second bladder 8a to 8h, it is possible to apply acupressure to the shoulder, back or waist of the seated person. Further, it is possible to receive acupressure while the lumbar region is maintained in a stable posture, and it is possible to effectively balance the lumbar support function and the massage function.

It should be noted that the present invention can be modified in various ways as long as it does not deviate from the spirit of the present invention, and it is natural that the present invention extends to the modified ones.

1: Vehicle seat 2: Backrest part 3: Seat part 4: Frame 4a: Skeleton 4b: Spring member 5: Pad 5a: First accommodating hole 5b: Second accommodating hole 6: Seat cover 7: Lumber support mechanism 7a ~ 7d: First bladder 7e: Back plate 8: Massage mechanism 8a ~ 8h: Second bladder 9: Controller 10: Air supply / exhaust device (supply / exhaust device)
10a: Pump 10b: Air tube H: Vertical direction L: Front-back direction W: Width direction

In order to achieve the above object, the vehicle seat according to the present invention is for a pad vehicle including a frame forming a seat shape, a pad attached to the frame, and a seat cover covering the pad surface. A seat, which is housed in a lumbar support mechanism provided with a first bladder that is accommodated in a first accommodating hole penetrating the pad and is expandable, and is accommodated in a second accommodating hole penetrating the pad. and massage mechanism comprises a deflated freely second bladder is to supply fluid for inflating said first bladder and second bladder, the first bladder to drain the fluid and second It is equipped with a supply / discharge device that contracts the bladder.

Claims (6)

A pad vehicle seat comprising a frame forming a seat shape, a pad attached to the frame, and a seat cover covering the pad surface.
A lumbar support mechanism with a first bladder that is held by the pad and can be expanded and contracted.
A massage mechanism with a second bladder that is held by the pad and can expand and contract.
A supply / discharge device that supplies a fluid that expands the first bladder and the second bladder, discharges the fluid, and contracts the first bladder and the second bladder.
A vehicle seat characterized by being equipped with. The vehicle seat according to claim 1, further comprising a temperature control device for controlling the temperature of the fluid supplied to the first bladder and the second bladder. The vehicle seat according to claim 1 or 2, wherein a plurality of the first bladder are provided along the height direction of the backrest portion. The vehicle seat according to any one of claims 1 to 3, wherein a plurality of the first bladder are provided along the depth direction of the seat portion. The vehicle seat according to claim 3 or 4, wherein the plurality of first bladder is individually configured to be expandable and contractible. The vehicle seat according to any one of claims 1 to 5, wherein the supply / discharge device periodically supplies or discharges fluid to the second bladder according to a preset program. ..

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