KR101934703B1 - Back seat for vehicles - Google Patents

Abstract

Disclosed is a vehicle back seat having a passenger customized deformation function. According to one embodiment of the present invention, the vehicle back seat comprises: a plurality of moving cushions arranged in the front of a back seat to move back and forth; at least one pressure sensor provided on a surface of the moving cushions to sense pressure applied by a passenger; a moving unit provided in the back seat to move the moving cushions; and a control unit receiving pressure data from the pressure sensor to control the moving unit.

Description

BACK SEAT FOR VEHICLES BACKGROUND OF THE INVENTION [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a back sheet for a vehicle, and more particularly, to a back sheet for a vehicle having a passenger-customized deformation function for changing the shape of a back sheet in accordance with an upper body posture of a passenger.

The vehicle seat has a function of safely and comfortably supporting the passenger within a limited space and weight range. The vehicle seat is largely composed of a back sheet (so-called backrest) for supporting the driver or passengers, a headrest for correcting the driving posture and reducing the impact transmitted to the passenger's head when an accident occurs, and a cushion for placing the lower body It is common. Usually, a seat cover or a trim cover that covers the surface of the sheet and functions as a package, a surface, and an outer shape is provided.

Such a vehicle seat is an object to which the driver or the passenger contacts the body most directly and for a long time in the vehicle. This is why it is ergonomically designed to make it feel as comfortable as possible when the body is mounted on a car seat. However, the details of the body are slightly different for each person, and because the attitude of each person is different from each other due to lifestyle or other reasons, the design of the vehicle seat will not satisfy all passengers in terms of convenience.

Therefore, there is a technical need to adapt not only the design of the seat itself, but also the shape of the human body of the passenger or the posture of the passenger.

Patent Document 1: Japanese Laid-Open Patent Application No. 2007-196814 (Published on August, 2007)

The present invention provides a vehicle backsheet and a vehicle seat including the backsheet, which can change the shape of the backsheet according to an upper body posture of a passenger.

According to an aspect of the present invention, there is provided a cushioning apparatus comprising: a plurality of moving cushions arranged in front of a back sheet and moving forward and backward; At least one pressure sensor provided on the surface of the moving cushion to sense the pressure applied by the occupant; A moving unit provided inside the back sheet to move the moving cushion; And a control section for receiving the pressure data from the pressure sensor and controlling the moving section based thereon.

At this time, the moving cushion includes a first moving cushion disposed at the back of the chest region of the occupant, a second moving cushion disposed at the rear of the upper part of the occupant's abdomen, a third moving cushion disposed behind the lower portion of the occupant's lower back, And a fourth moving cushion disposed at a rear portion of the region.

Further, the moving section includes: a rack member coupled to the moving cushion in the vertical direction and having teeth formed on the side portions; A pinion gear disposed in mesh with the teeth of the rack member and moving the rack member forward and backward; And a driving unit for driving the pinion gear.

The control unit includes a communication module for receiving pressure data from the pressure sensor, a storage module for storing a range of reference pressure data according to the mounting position of the pressure sensor, and a controller for comparing the pressure data received from the pressure sensor with a reference pressure data range A calculation module for calculating a moving direction and a moving distance of the moving part such that the received pressure data falls within the reference pressure data range when the received pressure data is out of the reference pressure data range and a control part for controlling the moving part according to the moving direction and moving distance calculated by the calculating module And a control module for controlling the display device.

The back sheet for a vehicle according to embodiments of the present invention is provided with a plurality of moving cushions divided in front of the back sheet and detects a pressure applied from a passenger through a pressure sensor provided on the surface of the moving cushion, It is possible to change the shape of the back sheet to give a more comfortable seating feeling to the occupant.

1 is a perspective view of a vehicle back sheet according to one embodiment of the present invention.
2 is a conceptual view schematically showing a moving cushion and a moving part in the back sheet for a vehicle of FIG.
3 is a view showing one specific example of the operation of the vehicle back sheet of Fig.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the following description is illustrative of the present invention, and the technical spirit of the present invention is not limited to the following description. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification. The thickness, size, etc. of each member in the drawings may be exaggerated, omitted, or schematically shown for convenience of explanation.

In the description of the structure of the present invention described herein, the positional relationship or direction is based on the drawings attached hereto unless otherwise stated.

In the description of the structure of the present invention described in the present specification, the description of the space and the description of the positional relationship mean the relative positions among the constituent elements of the present invention. Also, unless otherwise stated, there may be other components in the space between one component and another. For example, where reference is made herein to the "top" or "above" of one element, it is to be understood that not only where one element is positioned directly on top of another, To the time when another component is located between the component and the other components.

1 is a perspective view of a vehicle back sheet 100 according to an embodiment of the present invention. 1, a vehicle back sheet 100 (hereinafter referred to as a "back sheet") includes a plurality of moving cushions 110 disposed in front of a back sheet, at least one pressure sensor provided on a surface of the moving cushion 110, A moving unit 130 for moving the moving cushion 110, and a controller (not shown) for controlling the moving unit 130.

The backsheet 100 is a constituent element of the sheet, and the sheet may include a headrest (not shown) and a seat cushion (not shown) in addition to the backsheet 100. The headrest is positioned at the top of the back sheet to support the head of the driver or passenger (hereinafter referred to as the occupant). The seat cushion is connected to the lower portion of the back sheet. Further, although not shown in FIG. 1, the seat may be provided with a seat adjuster device for manually or automatically adjusting the back sheet in the forward, backward, left and right directions in accordance with the body shape of the driver or passenger. The present invention can additionally provide a vehicle seat including the back sheet (100). In this regard, the term "seat" is not limited to a specific vehicle application, but may be understood as a concept that can be applied to any means of transportation or means on which a seat such as an SUV, a truck,

The back sheet 100 may include a seat frame (not shown) and a seat cover that surrounds the seat frame. The plurality of the moving cushions 110 may be embedded in front of the back sheet 100 . In one embodiment, a groove (not shown) is formed in front of the back sheet 100 to receive the moving cushions 110, and the moving cushions 110 may be embedded in the groove.

The number of the moving cushions 110 is not specified. Although the present specification and the accompanying drawings illustrate and illustrate the case where there are four mobile cushions 110, the number of the mobile cushions 110 may be more or less. As the number of the moving cushions 110 increases, the body of the occupant can be more finely and resilient. For convenience of explanation, the description will be made mainly on the case where four mobile cushions 110 are used.

In one embodiment, the movable cushion 110 may be arranged in the height direction in front of the back sheet 100 by four pieces. 1, the moving cushion 110 may include a first moving cushion 111, a second moving cushion 112, a third moving cushion 113, and a fourth moving cushion 114 . The first moving cushion 111 may be located at the uppermost position and the fourth moving cushion 114 may be located at the lowest position. For example, the first moving cushion 111 may be disposed behind the occupant's chest region. The second moving cushion 112 may be disposed behind the occupant's upper abdomen portion. The third moving cushion 113 may be disposed behind the underbelly portion of the occupant. The fourth moving cushion 114 may be disposed behind the buttock portion of the occupant. However, this position of the moving cushions 110 is not limited, and may be located anywhere within the range of covering the upper body of the occupant. In addition, although the moving cushions 110 are arranged in the horizontal direction in the drawings attached hereto, it is needless to say that the moving cushions 1110 may be arranged in the vertical direction.

The moving cushions 110 may be formed of a common cushion material (e.g., leather or various fabric materials), and may be formed of the same material as the seat cover of the vehicle seat in one embodiment. The front portion of the movable cushions 110 may be formed to have a curved surface.

The moving cushions 110 can be disposed in front of the back sheet 100 and can be moved forward and backward. The moving cushions 110 are moved forward and backward according to the posture of the occupant, so that the occupant can be transformed into a back sheet shape in which the occupant can take a more comfortable posture. The components for the movement of the mobile cushion 110 for this and the movement operations will be described with reference to other drawings.

The pressure sensor 120 is provided on the surface of the movable cushion 110. One or more pressure sensors 120 may be provided for the respective moving cushions 111, 112, 113, For example, although the pressure sensors 120 are provided on the left and right sides of the respective movable cushions 111, 112, 113 and 114 in FIG. 1, the number of the pressure sensors 120 may be more or less than that of the pressure sensors 120, The placement can also vary. The pressure sensor 120 may be a conventional one, for example, a piezoelectric, a piezoresistance, a linear variable differential transformer, or the like.

The pressure sensor 120 senses the pressure applied from the upper body (or the like) to the occupant. There will be no pressure applied to the pressure sensors 120 if the occupant is not touching the back sheet 100, for example. Also, if the occupant is sitting with his butt removed, the pressure applied to the first moving cushion 111 will be high while the pressure applied to the fourth moving cushion 114 will be low or not. On the contrary, if the occupant is sitting with his butt behind alone, the pressure applied to the fourth moving cushion 114 is high while the pressure applied to the first moving cushion 111 is low or not. That is, the magnitude of the pressure sensed by the pressure sensor 120 provided on the moving cushions 110 of the back sheet 100 may be varied according to the upper body posture of the occupant. In this specification, data on the pressure magnitude that the pressure sensors 120 sense is referred to as "pressure data ". The pressure sensors 120 transmit pressure data to a control unit (not shown). At this time, the pressure sensors 120 can transmit pressure data to the control unit in a specific time period (for example, every 10 minutes). When the pressure sensors 120 transmit pressure data in real time, the shape of the back sheet is deformed to an excessively high frequency, which may cause inconvenience to the occupant. The control unit controls the moving unit 130 based on the pressure data received from the pressure sensors 120. This will be described later in detail.

2 is a conceptual view schematically showing the components of the moving cushion 111 and the moving part 130 in the back sheet 100 for a vehicle of FIG.

Referring to FIG. 2, the moving part 130 is positioned inside the back sheet 100. The moving part 130 may be provided for each of the moving cushions 111, 112, 113 and 114. In other words, since four moving cushions 110 are provided in this specific example, four sets of moving cushions 110 may be provided correspondingly. 1, the first moving cushion 111, the first moving cushion 111, and the second moving cushion 110 may be identical or similar to each other. The moving part 130 provided at the rear of the moving part 130 will be mainly described. In the meantime, although not shown in the drawing, a movable part mounting frame may be provided in the back sheet 100 so that a plurality of moving parts 130 can be respectively positioned. The movable part mounting frame may be formed, for example, to have a box-shaped skeleton having a divided space inside the back sheet 100. In each divided space, a mounting member (for example, a plate or the like) May be provided. The moving part mounting frame may be formed of a metal or plastic material (e.g., a polyamide-based polymer, a continuous fiber-reinforced thermoplastic resin, polycarbonate, polyester, polyether, polysulfone, polyacrylate, polyimide, etc.) .

The moving part 130 may include a rack member 131, a pinion gear 132, and a driving part 133. The rack member 131 is vertically coupled to the rear of the moving cushion 110 and has a tooth formed on the side thereof. For example, a method in which a column member (not shown) formed at the front side end of the rack member 131 is coupled to the center of the rear portion of the moving cushion 110 may be used. The coupling scheme is not specified and may be, for example, a bolting coupling. The pinion gear 132 is engaged with the tooth profile (for example, one side of the rack member 131) and moves the rack member 131 forward and backward. For example, the pinion gear 132 may rotate clockwise or counterclockwise about a central rotational axis. When the pinion gear 132 rotates in the clockwise direction, the rack member 131 receives the external force to the rear by the teeth engaged with the pinion gear 132, and can move backward. Thus, the movable cushion 111 is moved backward together with the rack member 131. On the contrary, when the pinion gear 132 rotates in the counterclockwise direction, the rack member 131 receives the external force forward by the teeth engaged with the pinion gear 132, and can move forward. Thus, the movable cushion 111 is moved forward together with the rack member 131. The driving unit 133 provides power for driving the pinion gear 132. [ In one embodiment, the driver 133 may be a conventional drive motor (electronic). That is, the rotation shaft of the drive motor and the rotation shaft of the pinion gear 132 are connected to each other by a belt or the like, so that the rotation of the rotation shaft of the drive motor rotates the pinion gear 132 accordingly. The technical details and principles of conventional drive motors are known in the art.

3 is a view showing one specific example of the operation of the backsheet 100 for a vehicle shown in Fig. 3, the control unit 140 may include a communication module 141, a storage module 142, a calculation module 143, and a control module 144. [ The control unit 140 may be located inside the backsheet 100 or may be located outside the backsheet 100. The pressure sensor 120, the moving part 130 and the control part 140 may be electrically and electronically connected to each other when the control part 140 is located inside the back sheet 100. [ Data transmission / reception, electric signal transmission / reception, and the like.

The communication module 141 receives pressure data from the pressure sensor 120. The communication module 141 may be a communication chip capable of wireless communication such as a wireless network, a Bluetooth, a Wi-Fi, a VoIP, and the like, which are commonly used in electronic devices. The communication module 141 can transmit the received pressure data 141 to the calculation module 143. [

The storage module 142 stores the range of reference pressure data according to the mounting position of the pressure sensor 120. [ The storage module 142 may be a commonly used memory chip. In the present specification, "range of reference pressure data" means a range of pressure data previously stored in the storage module 142. [ As described above, since the shape of the body of the occupant is slightly different for each person, when the back of the upper body of the occupant presses the moving cushion 110, the value of the pressure data sensed for each of the pressure sensors 120 disposed on the moving cushion 110 Will be different. However, since each moving cushion 110 is eventually forced to be pressed by a specific body part of the occupant, the range of pressure data received by each moving cushion 110 can be specified according to the occupant's posture. That is, although it is difficult to specify the pressure data itself, the upper limit value and the lower limit value of the pressure data can be extracted statistically in accordance with the posture taken by the occupant, and the range of the pressure data thus extracted is " And is a value stored in the storage module 142 in advance.

The calculation module 143 compares the pressure data received from the pressure sensor 120 with the reference pressure data range. When the received pressure data is out of the range of the reference pressure data, the moving direction and the moving distance of the moving part 130 are calculated so that the received pressure data falls within the range of the reference pressure data. In other words, the calculation module 143 calculates the specific contents of the drive control of the moving part 130.

The control module 144 controls the moving unit 130 according to the moving direction and the moving distance of the moving unit 130 calculated by the calculating module 143. That is, the control module 144 can drive the moving part 130 by controlling the rotating direction and the rotating size (torque) of the rotating shaft of the driving motor 133 (see FIG. 2) of the moving part 130. The computing module 143 and the control module 144 may be implemented through electronic circuits.

The control unit 140 may further include a power module (a battery and an associated electronic circuit) that provides power for driving the moving unit 130, although not shown in the figure.

Hereinafter, the operation of the back sheet 100 will be described with reference to specific examples.

1) If the occupant is not in contact with the back sheet 100, there will be no pressure applied to the pressure sensors 120. In this case, the backbone of the body is heavily weighted, so that there is a high possibility of causing back pain, and when the user is seated for a long time in such a posture, the occupant also feels uncomfortable. At this time, since there is no pressure data received from the pressure sensor 120, the control unit 140 determines that the reference pressure data range (the pressure range extracted statistically methodologically on the assumption that the occupant touches the back sheet) , It is possible to control all the moving cushions 110 to move forward. At this time, the movement distance can be set to a default value (for example, 1 to 5 cm) as the minimum movement distance, and if there is no pressure data received from the pressure sensor 120 thereafter, (Not shown) to move them forward. When the above process is repeated, the back of the occupant can be finally supported by the mobile cushions 110, so that the occupant can comfortably assume a comfortable posture without worrying about the occupant.

2) If the occupant is sitting with his butt missing, the pressure applied to the first moving cushion 111 will be high while the pressure applied to the fourth moving cushion 114 will be low or not. In this case, since the back bone is inclined backward and the waist is burdened, the occupant also feels uncomfortable when sitting in such a position for a long time. At this time, the controller 140 determines that the pressure applied to the first to fourth moving cushions 111 to 114 is out of the reference pressure data range, and moves each of the moving cushions 110 forward or backward So that the occupant can have a comfortable posture. For example, after the first moving cushion 111 is moved forward to control the chest region of the occupant to move forward, the second moving cushion 112 to the fourth moving cushion 114 are all moved forward, So that the upper body is more likely to be supported on the back sheet 100.

3) If the occupant is sitting with his butt alone behind, the pressure applied to the fourth moving cushion 114 will be high while the pressure applied to the first moving cushion 111 will be low or not. In this case, since the pelvis tilts backward and the vertebrae flexes, the occupant also feels uncomfortable when sitting for a long time in such a posture. At this time, the controller 140 determines that the pressure applied to the first to fourth moving cushions 111 to 114 is out of the reference pressure data range, and moves each of the moving cushions 110 forward or backward So that the occupant can have a comfortable posture. The first moving cushion 111 to the third moving cushion 113 are all forwardly moved after the fourth moving cushion 114 is moved forward so as to move the buttocks of the occupant forward, So that the back sheet 100 can be more easily supported.

In addition to the examples 1) to 3) described above, there may be various shape control operations of the back sheet 100 according to the posture of the passenger. On the other hand, the shape control operation of the back sheet 100 can be performed according to a specific time period (e.g., 10 minutes to 20 minutes). This is because, if the shape of the back sheet 100 changes in response to the occupant's posture in real time, the passenger may feel uncomfortable. Also, although not shown in the drawings, the passenger may be provided with an operation unit (for example, formed in a button manner and provided in a dashboard, a center console, or the like) so as to control the shape of the back sheet 100, A display unit for notifying the shape of the sheet 100 or notifying the shape of the back sheet 100 or the like may be additionally provided.

Embodiments of the present invention have been described above. However, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims. It will be understood that various modifications may be made in the invention, and that such modifications are also included within the scope of the present invention.

100: back sheet
110: Movable cushion
120: Pressure sensor
130:
140:

Claims (5)

A plurality of moving cushions disposed in front of the back sheet and moving forward and backward;
At least one pressure sensor provided on the surface of the moving cushion to sense the pressure applied by the occupant;
A rack member which is provided inside the back sheet and moves the moving cushion so as to be coupled to the moving cushion in the vertical direction and has a tooth formed on the side portion thereof; a pinion gear which is arranged to mesh with the teeth of the rack member and moves the rack member forward and backward; A moving unit including a driving motor for driving the driving unit; And
A communication module for receiving pressure data from a pressure sensor at a specific time period and transmitting the pressure data to a calculation module; a storage module for storing a range of reference pressure data according to a mounting position of the pressure sensor; A calculation module for comparing the range of data and calculating the moving direction and the moving distance of the moving part so that the received pressure data falls within the reference pressure data range when the received pressure data is out of the reference pressure data range; And a control module for controlling the moving part according to the control signal. The method according to claim 1,
The moving cushion includes a first moving cushion disposed behind the occupant's chest region, a second moving cushion disposed behind the occupant's upper abdomen portion, a third moving cushion disposed rearward of the lower portion of the occupant's lower back portion, And a fourth shifting cushion disposed in the fourth shifting cushion. The method of claim 2,
The back sheet for a vehicle according to claim 1, wherein a groove portion is formed in the front of the back sheet to accommodate the moving cushions, and the moving cushions are embedded in the groove portion. The method of claim 2,
And a movable part mounting frame having a box-like skeleton having a divided space is provided by locating a plurality of moving parts in the back sheet. A vehicle seat comprising a vehicle back sheet according to any one of claims 1 to 4.

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