JP2006159964A - Driving attitude adjusting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving attitude adjusting device capable of inexpensively realizing the constitution capable of optimizing a driving attitude irrespective of a physique. <P>SOLUTION: The driving attitude adjusting device is equipped with a steering position variable means (steering post 13) varying the position of a steering wheel 9, a seat height variable means (X link 14) varying the seat height, and an operating pedal position variable means (movable floor slide rail 8) varying the position of an accelerator pedal 1 and a brake pedal 2. The driving attitude adjusting device is equipped with a motor 16 driving the seat height variable means, and an interlocking means (a seat height interlocking gear 17, a steering post interlocking gear 18, and a movable floor locking gear 19) which interlocks the steering post 13 and the variable floor slide rail 8 with the movement of the X link 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to the technical field of a driving posture adjusting device that adjusts a driving posture (driving position) of a driver.

As a conventional driving posture adjusting device, the position of the brake pedal and the accelerator pedal can be moved in the longitudinal direction of the vehicle body. When the physique of the driver is small, the seat is moved forward and upward, and the pedal is moved to the rear of the vehicle. A device that aims to optimize the position (eyepoint) of the driver's eyes by moving the device is known (for example, see Patent Document 1).
JP-A-7-96784

  However, in the above prior art, in addition to the mechanism for changing the operation pedal position and seat height, a steering wheel tilt mechanism and three motors for independently driving each mechanism are required. There was a problem of increasing the cost and cost.

  The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a driving posture adjusting apparatus capable of realizing a configuration capable of optimizing the driving posture regardless of the physique at a low cost. .

In order to achieve the above object, the present invention provides:
Steering position varying means for varying the position of the steering wheel;
A seat height varying means for varying the seat height;
An operation pedal position varying means for varying the position of the operation pedal;
In the driving posture adjustment device with
Driving means for driving any one of the three position variable means;
An interlocking mechanism for interlocking the other two position variable means with respect to the movement of the position variable means driven by the drive means;
It is characterized by providing.

  According to the present invention, the eye point and the driving posture can be adjusted according to the physique by driving the steering position varying means, the seat height varying means, and the operation pedal position varying means. In addition, when one position variable means is operated by the drive means, the other two position variable means are interlocked with this, and therefore, compared with the conventional technique that requires three drive means (motors). The number of means can be reduced. Therefore, a configuration that can optimize the driving posture regardless of the physique can be realized at low cost.

  Hereinafter, the best mode for carrying out the driving posture adjusting apparatus of the present invention will be described based on the first embodiment.

First, the configuration will be described.
FIG. 1 is a side view illustrating the configuration of the driving posture adjusting apparatus according to the first embodiment, and FIG. 2 is a plan view illustrating the configuration of the driving posture adjusting apparatus according to the first embodiment.

  An accelerator pedal 1 and a brake pedal 2 (operation pedal) are fixed to a movable floor 3, and the brake pedal 2 is connected to a booster 5 and a master cylinder 6 by brake transmission means 4 that is a flexible cable. The accelerator pedal 1 is an electronic throttle and is not mechanically connected to an engine not shown.

  The movable floor 3 is engaged with a movable floor slide rail (operating pedal position varying means) 8 installed under the seat cushion 7a, and moves in the sliding direction (the front-back direction with a gradient) of the movable floor slide rail 8. Can do. Therefore, the positions of the pedals 1 and 2 fixed to the movable floor 3 (hereinafter, the heel point assuming the driver's heel position as a representative value of the pedal position) is the same gradient as the movable floor slide rail 8. It will move in the front-rear direction with

  As shown in FIG. 2, the steering rod 11 that steers the steering wheel 9 and the left and right front wheels 10 and 10 is connected by a steering transmission means 12 that is a flexible cable, and the steering position can be freely moved. The steering wheel 9 is cantilevered by a steering post (steering position varying means) 13 in the figure, and this steering post 13 rotates in the front-rear direction around a steering post fulcrum 13a below the seat 7. The position of the steering wheel 9 can be adjusted. The direction and range of the position adjustment is the steering position movement range in FIG. The position adjustment is performed by rotating the steering post fulcrum 13a.

  In the posture adjusting apparatus of the first embodiment, as shown in FIG. 1, as a mechanism for adjusting the height of the seat cushion 7a, an X link (seat height varying means) 14 is provided between the seat cushion 7a and the vehicle body floor. It has. The X link rear fulcrum (movable fulcrum) 14 a of the X link 14 can move on the X link rear fulcrum slide rail 15. The X link rear fulcrum 14a is provided with a coaxial motor (driving means) 16 as a seat height driving means. By driving the motor 16, the X link rear fulcrum 14a becomes the X link rear fulcrum slide rail 15. Slide up and the angle of the X link 14 changes. As a result, the seat cushion 7a moves obliquely up and down.

  If the point near the driver's hip point (here, the base of the seat cushion 7a and the seat back 7b) is the seat reference point, the seat reference point moves within the seat reference point movement range of FIG. Since the movable floor slide rail 8 is coupled to the seat cushion 7a, when the seat reference point moves up and down, the movable floor 3 also moves up and down at the same time.

  In the first embodiment, when the seat height is changed by the motor 16, an interlocking mechanism is provided in which the steering position and the movable floor position operate in conjunction with each other. This interlocking mechanism includes a seat height interlocking gear 17 provided at the X link front lower fulcrum (fixed fulcrum) 14b, a steering post interlocking gear 18 provided at the steering post fulcrum 13a, and a rack (non-rotating) formed on the movable floor 3. And a movable floor interlocking gear 19 that meshes with the rack, and a power transmission means 19 a that connects the movable floor interlocking gear 19 and the seat height interlocking gear 17.

  The seat height interlocking gear 17 is a gear that rotates when the angle of the X link 14 changes. When the seat 7 moves up, the seat height interlocking gear 17 rotates counterclockwise in FIG. When the seat 7 is raised, the steering post interlocking gear 18 rotates in the clockwise direction, and the steering position moves forward.

  The rotation of the seat height interlocking gear 17 is transmitted to the movable floor interlocking gear 19 through power transmission means 19a which is a flexible cable. For example, when the seat height interlocking gear 17 rotates counterclockwise, the movable floor interlocking gear 19 rotates clockwise and engages with the movable floor interlocking gear 19 on the movable floor slide rail 8. Shall operate backwards with respect to the driver. Thus, when the seat 7 is raised, the steering position and the movable floor position are also moved backward in conjunction with each other.

  Here, in addition to the position adjustment according to the physique, the steering post 13 has a function of expanding the space near the knee at the time of getting on and off, aiming at improvement of getting on and off, greatly falling forward when getting on and off. The steering position at that time is the steering position P4 when getting on and off in FIG. Therefore, the seat height, the steering position, and the movable floor position move in conjunction with each other, but only the steering position needs to be moved larger than the other two in the vicinity of the position where the seat height is the lowest. The mechanism is shown in FIG.

  The seat height interlocking gear 17 includes a first small diameter gear 17a and a first large diameter gear 17b, and the steering post interlocking gear 18 is formed by combining the second small diameter gear 18a and the second large diameter gear 18b. (In FIG. 3, they are stacked in the depth direction),

  At the time of posture adjustment, the first small diameter gear 17a of the seat height interlocking gear 17 and the second large diameter gear 18b of the steering post interlocking gear 18 mesh with each other. Therefore, the steering post 13 moves slowly with respect to the change in the seat height.

  When getting on and off, that is, when the steering post is inclined, the first large-diameter gear 17b of the seat height interlocking gear 17 and the second small-diameter gear 18a of the steering post interlocking gear 18 are engaged. Therefore, the steering post 13 moves rapidly with respect to the change in the seat height, and only the steering position moves greatly forward.

  As shown in FIG. 1, the X link 14 and the steering post 13 are connected by a steering post auxiliary spring (steering post auxiliary elastic means) 23a. The X link 14 and the movable floor 3 are connected by a movable floor auxiliary spring (movable floor auxiliary elastic means) 23b. The steering post auxiliary spring 23a and the movable floor auxiliary spring 23b constitute elastic means for assisting the driving force of the motor 16 by applying a force in a direction opposite to the weight of the driver when getting on and off.

  The posture adjustment of the driver is performed by the posture adjustment means (driving posture control means) 20 shown in FIG. Based on the driver's physique obtained by the physique input means 21 and the state obtained by the key position detection means 22, the posture adjustment means 20 calculates a target value of the motor 16 and issues a drive command. The physique input means 21 is a method of inputting a height value using a touch panel on a display in a vehicle compartment, for example. When the key is turned off, it is determined that it is time to get on and off.

Next, the operation will be described.
[Driving posture adjustment method]
The relationship between the seat height and the steering position is shown in FIG. Each move to the optimal position according to the physique. When the physique is small, the seat reference point position is S1, and the steering position at that time is P1. Similarly, when the physique is intermediate, S2 and P2, respectively, and when the physique is large, S3 and P3 are obtained. When getting on and off, S4 and P4, respectively, and as described above, only the steering position moves greatly forward.

  Further, the position of the movable floor 3 (here, the heel point as a representative value) is shown in FIG. The heel point is also moved to H1, H2, H3, and H4 in conjunction with the sheet reference point positions S1, S2, S3, and S4.

(Sheet height adjustment method)
FIG. 6 shows the relationship between the height h input to the physique input means 21 and the sheet reference point position S. The smaller the height h is, the higher the seat 7 is, and the lowermost is when getting on and off. When the height h is between 1450 mm and 1900 mm, the sheet reference point position moves from S1 to S3 so as to be proportional to the height h in a negative direction. Here, the numerical value of height h is set based on the standard physique of the Japanese, so this is not the case when the standard physique of another country is used as a reference. When getting on and off, the reference position moves to S4. In this case, as shown in FIG. 6, the reference position moves to P4 at the same rate as when the height h exceeds 1900 mm.

(Steering position adjustment method)
FIG. 7 shows the relationship between the height h and the steering position. When the height h is between 1450 mm and 1900 mm, the steering position moves from P1 to P3 in proportion to the height. In the case of getting on and off, the steering post 13 has a height h exceeding 1900 mm due to the mechanism of the gears 17 and 18 combining the teeth 17a and 17b and 18a and 18b of the two types of diameters described above. Move forward and move to P4.

(Heal point adjustment method)
FIG. 8 shows the relationship between the height h and the heel point position. When the height h is between 1450 mm and 1900 mm, the heel point position moves in proportion to the height from H1 to H3. By the control described so far, the eye point position is constant and the posture can be optimized even if the physique is different.

[Driving posture adjustment]
By adjusting the driving posture using the above logic, the seat height, the steering position, and the movable floor position can be optimized according to the physique using only one motor 16.

  Furthermore, in the first embodiment, since the position of the motor 16 is arranged at the position of the X link rear fulcrum 14a, the distance of the X link rear fulcrum 14a is large, and the reduction ratio of the motor 16 can be increased. Contributes to downsizing.

[Motor auxiliary action of auxiliary spring]
When three mechanisms are operated simultaneously with only one motor 16, a large capacity motor is required. Therefore, in the first embodiment, the steering post auxiliary spring 23a is used as an auxiliary mechanism that minimizes the capacity of the motor 16. In addition, a movable floor auxiliary spring 23b is provided.

  There are two major factors that determine the capacity of the motor: the difference in the physique of the driver and the difference in the force in the upward and downward directions. In the first embodiment, it is considered to use the auxiliary springs 23a and 23b to generate an auxiliary force corresponding to the physique. As means for expressing the difference in the physique of the driver, we focused on the steering post position and the movable floor position whose position changes depending on the physique.

  FIG. 9 shows the movement of the steering post auxiliary spring 23a. One of the fulcrum positions of the steering post auxiliary spring 23a is set to the X link 14 for changing the seat height, and the other is set to a part of the steering post 13. The steering post auxiliary spring 23a is most contracted at the position P1 where the steering position is small, expands as the size increases, and becomes the longest at the getting on / off position.

  At this time, since the angle of the steering post 13 is larger than that of the X link 14 in the vicinity of the getting-on / off position, the moment arm of the steering post spring 23a is reduced, and as a result, the torque around the steering post 13 is physique even at the getting-on / off position. It does not increase significantly compared to the time of the day.

  FIG. 10 shows the movement of the movable floor auxiliary spring 23b. One of the fulcrum positions of the movable floor auxiliary spring 23 b is set at the rear portion of the X link 14 and the other is set at the lower portion of the movable floor 3. The movable floor position is small and the movable floor auxiliary spring 23b is the shortest. As the physique increases, the spring extends and becomes the longest at the getting on / off position.

Next, a method for determining the spring constants and spring fulcrum positions of the auxiliary springs 23a and 23b will be described.
(Spring constant setting method)
The basic idea is to keep the maximum value of the required force of the motor 16 constant regardless of the physique, even in the upward and downward directions. FIG. 11 shows the magnitude of force for each factor when this mechanism is operated. This is converted into a force in the up-down direction of the seat, and will be described below with this converted force.

  The horizontal axis is the weight M according to the driver's physique, and the resistance force proportional to the body weight as the force, the resistance force due to the structure (including the weight of the seat 7, the movable floor 3, the steering post 13, the friction of each gear, etc.), It is necessary to operate a force for operating at a constant speed (the direction is different between the upward direction and the downward direction). Since the necessary force of the motor 16 is kept constant even if the physique is different, it can be seen that the force that is assisted by the auxiliary springs 23a and 23b is good in proportion to the physique.

Accordingly, assuming that the auxiliary force by the steering post auxiliary spring 23a and the auxiliary force by the movable floor auxiliary spring 23b are set to the same value, the spring constant Tp of the steering auxiliary spring 23a and the spring constant Th of the movable floor auxiliary spring 23b are as follows. (1) and (2).
Tp = Kp · (Ml−Ms) / Lp ′ / 2 (1)
Th = Kh · (Ml−Ms) / Ls ′ / 2 (2)

  Here, Kp and Kh are coefficients for converting the force in the vertical direction of the seat into respective spring forces, Ml is the weight of a physique, Ms is the weight of a physique, and Lp 'is when the physique of the steering post auxiliary spring 23a is small. The stroke amount of the spring at the getting on / off position, Ls ′, is the stroke amount of the spring at the time when the movable floor auxiliary spring 23b is small in size and at the getting on / off position.

  By setting it as said characteristic, the required force Fa of the motor 16 of an operation direction can be made constant by any physique. This characteristic is shown in FIG. The total force of both is the bold line in the figure. Here, the difference in force between the physique large position S3 and the getting on / off position S4 is defined as Fd.

(How to set the initial tension of the spring)
Next, a method for setting the initial tension (assist force Finit when the physique is small) of the auxiliary springs 23a and 23b will be described. This value is the maximum motor exertion force when ascending (Fmax in FIG. 13 and the same value at the small, medium, large, and getting on / off positions) and the motor in the opposite direction at the getting on / off position when the physique is small when descending Set so that the exertion force (the state that requires the most force when descending) is the same value. Thereby, the required exertion force of the motor 16 can be set to the same value in both the forward direction and the reverse direction, and the absolute value of the motor exertion force can be minimized.

When calculated from the balance of force under the above conditions, the assist force Finit when the physique is small can be obtained by the following equation (3).
Finit = (3Ms−Ml + 2Fk−Fd) / 2 (3)

Further, the fulcrum distances Dp and Dh of the auxiliary springs 23a and 23b at that time are obtained by the following equations (4) and (5), respectively.
Dp = Finit · Kp / Tp / 2 + Lpi (4)
Dh = Finit · Kh / Th / 2 + Lhi (5)
Here, Lpi and Lhi are the natural lengths of the auxiliary springs 23a and 23b.

[Required motor capacity reduction]
FIG. 13 and FIG. 14 show the motor exerting force at the time of ascending and descending for each physique according to the setting described above. At the time of ascent of FIG. 13, an upward force is required in the vicinity of each physique position, and the maximum value is constant at Fmax for any weight. Further, at the time of lowering in FIG. 14, the boarding / alighting position of the small weight (Ms) is the smallest, and its value is −Fmax. Thus, the maximum value (absolute value) of the motor exerting force can be reduced by reversing the motor exerting force when the physique is small (Ms) at the positions S1 and S4.

  FIG. 15 shows a summary of the maximum values of the motor power for each physique. For reference, the case where the auxiliary springs 23a and 23b are not provided is also described. In the case where the auxiliary springs 23a and 23b are not provided, the most necessary force of the motor 16 is when the physique is increased, and the motor capacity is required to be about three times the maximum value Fmax of the first embodiment. .

  That is, by using the auxiliary springs 23a and 23b of the first embodiment, it is possible to adjust all of the steering position, the seat height, and the movable floor position without increasing the capacity of even one motor. In addition, the steering post interlocking gear 18 of the steering post fulcrum 13a and the movable floor slide rail 8 have a certain amount of backlash, but by attaching the auxiliary springs 23a and 23b, they can be pulled in one direction with a predetermined tension. This play can be prevented.

[Contrast with conventional technology]
For example, a driving posture adjusting device described in Japanese Patent Application Laid-Open No. 7-96784 is known as a device that corrects the driver's field of view and posture when the physique is different. In this prior art, the position of a pedal (accelerator pedal and brake pedal) is movable in the front-rear direction, and when the physique is small, the seat is moved forward and upward, and the pedal is moved backward. This aims to ensure that the driver's eye position (hereinafter referred to as eyepoint) is at an appropriate height for any physique.

  However, in the above prior art, in order to increase the seat height in the case of a small person, the driver's hip point (the great trochanter on the femur, which is the base of the lower limb) and the heel position (heel point) on the floor ) And the height of small people will be higher than large people.

  When considering the optimal driving posture, the height of the hip point to the heel point should be smaller for a small person than for a large person. Moreover, although the height of a driver | operator's eye point can be optimized in a prior art example, there exists a problem that the front-back direction changes with physiques.

  The factors that determine the eye point include the annoyance in the vicinity of the sun visor at the front end of the roof, the viewing distance between the meter and the eye point, as well as the forward view (due to the eye point height). It is considered best that the height (both front and back) is constant regardless of the physique. Furthermore, when the front / rear position of the eye point is fixed, the range in which the pedal is moved back and forth is extremely large, about 200 mm to 300 mm. With the conventional mechanism that the floor is fixed and only the pedal slides back and forth, It is thought that it is difficult to establish a unit because it protrudes.

  Therefore, here, even if the driver's physique is different, the floor on which the pedal and foot are placed can be moved integrally in the front-rear direction and up-down direction, and the seat can be moved greatly in the up-down direction. Consider a driving posture adjustment device that is constant in both direction and height. Further, when the steering position is to be adapted from a small person to a large person, the steering position needs to be moved largely in the longitudinal direction of the vehicle body, and it is difficult to realize a general tilt and telescopic mechanism due to the space of the mechanism.

  In addition to largely moving the steering position in the longitudinal direction of the vehicle body, considering how to retract the steering wheel to make it easier to get on and off, and to improve the impact absorption cost of the steering system for collision safety, the way to support the steering wheel It is considered effective to have a fulcrum and support it with a cantilevered steering post.

  As described above, in order to optimize the field of view and posture of a driver with a different physique, it is necessary to move the seat height direction, the front-rear direction of the movable floor integrated with the pedal, and the front-rear direction of the steering. However, in the case of automatically adjusting this, if each is moved by an independent actuator, three actuators are required, resulting in poor in-vehicle performance and high cost. When a vehicle (for example, a compact car) in which a driver with a small physique such as a woman or an elderly person rides is assumed, the cost needs to be further reduced.

  On the other hand, in the driving posture adjusting apparatus of the first embodiment, the steering position, the movable floor position, and the seat height can be adjusted by driving only one motor 16, so that the eyepoint position and A configuration that can optimize the driving posture can be realized at low cost.

  Further, by the action of the auxiliary springs 23a and 23b, even when only one motor 16 is used, the increase in the capacity of the motor 16 is suppressed, the required torque of the motor is uniform when adjusting the driving posture, and the backlash of each gear is reduced. be able to.

Next, the effect will be described.
In the driving posture adjusting apparatus of the first embodiment, the effects listed below can be obtained.

  (1) Steering position varying means (steering post 13) for varying the position of the steering wheel 9, seat height varying means (X link 14) for varying the seat height, and positions of the accelerator pedal 1 and the brake pedal 2 In a driving posture adjusting device including a variable operation pedal position variable means (movable floor slide rail 8), the motor 16 for driving the seat height variable means and other two movements with respect to the movement of the seat height variable means. Since it has an interlocking mechanism (seat height interlocking gear 17, steering post interlocking gear 18, and movable floor interlocking gear 19) that interlocks two position variable means, a configuration that can optimize the driving posture regardless of the physique is low cost. Can be realized.

  (2) Since the eye point which is the height of the driver's eyes is provided with the posture adjusting means 20 for driving and controlling the motor 16 so that the eye point is always at a predetermined position regardless of the driver's physique, the driver's eye point Can always be automatically set to the proper position regardless of physique.

  (3) The steering position varying means is a steering post 13 that extends upward from the lower side of the seat 7 and supports the steering wheel 9 in a cantilever manner and has a steering post fulcrum 13a that can swing in the longitudinal direction of the vehicle body at the lower end. The operating pedal position varying means is a movable floor slide rail 8 provided between the vehicle body floor and the seat 7 and sliding the movable floor 3 obliquely up and down with respect to the vehicle body floor. The seat height varying means is An X link 14 provided between the vehicle body floor and the seat 7 and having an X link front lower fulcrum 14b on the vehicle body front side and an X link rear fulcrum 14a slidable in the vehicle body longitudinal direction on the vehicle body rear side, The interlocking mechanism swings the steering post 13 to the rear side of the vehicle body when the X link 14 is operating to raise the seat 7. At the same time, since the movable floor 3 is moved rearward and upward, the seat height, the steering position, and the movable floor position can be optimized according to the physique by one motor 16.

  (4) The interlocking mechanism shows the ratio of the change in the steering position to the change in the seat height, when the driver gets on and off when the seat height is near the lowest position than when the driving posture is adjusted when the seat height is higher than the predetermined height. Therefore, the forward tilting speed when the steering post 13 gets off and the rising speed to the driving position when getting on can be increased, and the convenience of getting on and off can be improved.

  (5) The interlocking mechanism includes a steering post interlocking gear 18 provided at the steering post fulcrum 13a and a seat height interlocking gear 17 provided at the X link front lower fulcrum 14b of the X link 14 and meshing with the steering post interlocking gear 18. Since the movable floor interlocking gear 19 connected to the rack formed on the movable floor 3 and the rack and the seat height interlocking gear 17 is provided, the steering post 13 has a simple and inexpensive configuration using a gear mechanism. The X link 14 and the movable floor slide rail 8 can be interlocked.

  (6) Since the motor 16 slides the X link rear fulcrum 14a of the X link 14 in the longitudinal direction of the vehicle body, the distance of the X link rear fulcrum 14a is large and the reduction ratio of the motor 16 can be increased. Can contribute to downsizing

  (7) Elastic means (steering post auxiliary spring for reducing the maximum value of the driving force by reversing the direction of the driving force when the motor 16 is driven by applying a force in a direction opposite to the weight of the driver when getting on and off the vehicle. 23a and the movable floor auxiliary spring 23b), the steering position, seat height, and movable floor position can all be adjusted while suppressing the capacity of the motor 16 as much as possible.

  (8) The elastic means is a steering post provided with a fulcrum provided on the X link 14 and the steering post 13 so that the elastic force increases as the seat height increases or the steering position moves forward of the vehicle body. The auxiliary floor 23a, the X link 14 and the movable floor 3 are provided with fulcrums, and the movable floor auxiliary is set such that the elastic force increases as the seat height increases or the operation pedal position moves forward of the vehicle body. Since the spring 23b is provided, it is possible to suppress an increase in the motor capacity while simultaneously driving the three position variable means using one motor 16.

  (9) The elastic coefficients Tp, Th and the fulcrum position (distance between fulcrums) of the elastic means (steering post auxiliary spring 23a, movable floor auxiliary spring 23b) are such values that the maximum required force of the motor 16 is always a constant value Fmax. Since the motor torque peak is set regardless of the driver's weight, the motor torque peak can be reduced and the motor capacity can be reduced.

  (10) The elastic coefficient Tp and the fulcrum position (distance between fulcrums) of the elastic means (steering post auxiliary spring 23a, movable floor auxiliary spring 23b) are the absolute values of the maximum required force of the motor 16 when the seat is raised and lowered. Since the values and positions are set so as to have the same value | ± Fmax |, the motor torque can be equalized when the seat is raised and lowered, which contributes to a reduction in motor capacity.

(Other examples)
The best mode for carrying out the present invention has been described based on the first embodiment. However, the specific configuration of the present invention is not limited to the configuration shown in the first embodiment. The position of the motor 16 may be provided through a reduction gear so as to drive each gear (seat height interlocking gear 17, steering post interlocking gear 18, movable movable interlocking gear 19). Then, since the positions of the gears are close to each other, they can be integrated together as a motor drive unit.

  Further, in the interlocking mechanism, as a method of increasing the ratio of the change in the steering position with respect to the change in the seat height when the driver gets on and off, a method of changing the tooth cutting of one gear, a method using an elliptical gear, and a cam are used. A method or the like may be used.

It is a side view which shows the structure of the driving posture adjustment apparatus of Example 1. FIG. It is a top view which shows the structure of the driving posture adjustment apparatus of Example 1. FIG. It is a figure which shows the state of a steering post interlocking gear. It is a figure which shows the driving posture of a driver with a large physique and a driver with a small physique. It is a figure which shows the positional relationship of a physique and a movable floor. It is a figure which shows the relationship between height and a sheet | seat reference point position. It is a figure which shows the relationship between height and a steering position. It is a figure which shows the relationship between a height and a heel point position. It is a figure which shows the state of a steering post auxiliary | assistant spring. It is a figure which shows the state of a movable floor auxiliary | assistant spring. It is a figure which shows the relationship between a body weight and each force. It is a figure which shows the relationship between seat height and the assist force by a spring. It is a figure which shows the relationship between the seat height at the time of a raise, and motor demonstrating force. It is a figure which shows the relationship between the sheet | seat height at the time of descent | fall and motor exhibiting power. It is a figure which shows the relationship between a body weight and the maximum value of motor performance.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Accel pedal 2 Brake pedal 3 Movable floor 4 Brake transmission means 5 Booster 6 Master cylinder 7 Seat 7a Seat cushion 7b Seat back 8 Movable floor slide rail 9 Steering wheel 10 Left and right front wheels 11 Steering rod 12 Steering transmission means 13 Steering post 13a Steering Post fulcrum 14 X link 14a X link rear fulcrum 14b X link front lower fulcrum 15 X link rear fulcrum slide rail 16 Motor (seat height drive means)
17 Seat height driving means 18 Steering post interlocking gear 19 Movable floor interlocking gear 20 Attitude adjusting means 21 Physique input means 22 Key position detecting means 23a Steering post auxiliary spring 23b Movable floor auxiliary spring

Claims (10)

Steering position varying means for varying the position of the steering wheel;
A seat height varying means for varying the seat height;
An operation pedal position varying means for varying the position of the operation pedal;
In the driving posture adjustment device with
Driving means for driving any one of the three position variable means;
An interlocking mechanism for interlocking the other two position variable means with respect to the movement of the position variable means driven by the drive means;
A driving posture adjusting device comprising: The driving posture adjusting device according to claim 1,
A driving posture adjusting device comprising driving posture control means for driving and controlling the driving means so that the eye point which is the height of the driver's eyes is always at a predetermined position regardless of the physique of the driver. . In the driving posture adjusting device according to claim 1 or 2,
The steering position varying means is a steering post that extends upward from the lower side of the seat and supports the steering wheel in a cantilevered manner, and has a fulcrum that can swing in the longitudinal direction of the vehicle body at the lower end.
The operation pedal position varying means is a slide rail that is provided between the vehicle body floor and the seat and slides the movable floor in the vehicle body diagonally up and down direction with respect to the vehicle body floor,
The seat height varying means is an X link provided between the vehicle body floor and the seat, and having a fixed fulcrum on the front side of the vehicle body and a movable fulcrum slidable in the longitudinal direction of the vehicle body on the rear side of the vehicle body,
The interlocking mechanism swings the steering post to the rear side of the vehicle body and moves the movable floor to the rear side and the upper side at the same time when the X link is operating to raise the seat. Driving posture adjustment device. In the driving posture adjusting device according to claim 3,
The interlocking mechanism increases the ratio of the steering position change to the seat height change when the driver gets on and off when the seat height is near the lowest position than when the driving posture is adjusted so that the seat height is higher than a predetermined height. A driving posture adjusting device characterized by that. In the driving posture adjusting device according to claim 3 or 4,
The interlocking mechanism is
A steering post interlocking gear provided at a fulcrum of the steering post;
A seat height interlocking gear which is provided at a fixed fulcrum on the vehicle body floor side of the X link and meshes with the steering post interlocking gear;
A rack formed on the movable floor, and a movable floor interlocking gear coupled to the rack and the steering post interlocking gear or the seat height interlocking gear;
A driving posture adjusting device comprising: The driving posture adjusting device according to any one of claims 3 to 5,
The driving posture adjusting apparatus characterized in that the driving means slides the movable fulcrum of the X link in the longitudinal direction of the vehicle body. The driving posture adjusting device according to any one of claims 1 to 6,
It comprises elastic means for reducing the maximum value of the driving force by applying a force in a direction that opposes the weight of the driver when getting on and off, and reversing the direction of the driving force when driving the driving means. Driving posture adjustment device. The driving posture adjusting device according to claim 7,
The elastic means is
Steering post auxiliary elastic means provided with a fulcrum at the X link and the steering post, and set so that the elastic force increases as the seat height increases or the steering position moves toward the front side of the vehicle body,
Movable floor auxiliary elastic means provided with a fulcrum at the X link and the movable floor, and set so that the elastic force increases as the seat height increases or the operation pedal position moves forward of the vehicle body;
A driving posture adjusting device comprising: In the driving posture adjusting apparatus according to claim 7 or 8,
The driving posture adjusting apparatus characterized in that the elastic coefficient and fulcrum position of the elastic means are set to values and positions so that the maximum required force of the driving means is always constant. In the driving posture adjusting apparatus according to claim 8 or 9,
The driving posture adjusting device characterized in that the elastic coefficient and fulcrum position of the elastic means are set to values and positions so that the absolute value of the maximum required force of the driving means is the same when the seat is raised and when the seat is lowered .

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