JP2008296855A - Seat belt switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a operation switch incorporated in a seatbelt capable of preventing an occupant's unintended operational errors of the operation switch. <P>SOLUTION: The seatbelt switching device comprises a wearing switch 52 (wearing detection means), a seating sensor 53 (seating detection means), and a seatbelt switch ECU 51 (control means). The wearing switch 52 outputs an ON signal to the seatbelt switch ECU 51 at the time of wearing a seatbelt 10. The seating sensor 53 outputs an ON signal to the seatbelt switch ECU 51 at the time of detecting an occupant being seated on a seat S. The seatbelt switch ECU 51 enables input of the switch by the operation switch 30 when the seating sensor 53 detects the seated occupant and the wearing switch 52 detects wearing of the seatbelt 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seat belt switch device including an operation switch.

As this type of seat belt switch device, for example, as described in Patent Document 1 below, a device in which a plurality of operation switches are provided along the longitudinal direction of the seat belt is known. In this seat belt switch device, it is possible to remotely operate an in-vehicle electronic device such as a car audio in accordance with an ON operation of the operation switch.
JP 2006-76438 A

  However, the seat belt switch device described in Patent Document 1 is configured such that the switch input is immediately activated in response to the ON operation of the operation switch. For this reason, there has been a problem that an in-vehicle electronic device is likely to malfunction due to an erroneous operation of the operation switch.

  The subject of this invention is providing the seatbelt switch apparatus which can prevent the erroneous operation of the operation switch which a passenger | crew does not intend.

Means for Solving the Problems and Effects of the Invention

  In order to solve the above-mentioned problems, the present invention provides a seat belt switch device provided with a plurality of operation switches along the longitudinal direction of the seat belt. Control for enabling switch input by the operation switch on the condition that seating of an occupant is detected by the seating detection unit and seat belt mounting is detected by the mounting detection unit. Means are provided.

  In this seat belt switch device, the switch input by the operation switch is validated on the condition that the seating detection means detects the seating of the occupant and the mounting detection means detects the seat belt. Therefore, only when the seat belt is properly used by an occupant on the seat, the switch input by the operation switch is accepted, so that erroneous operation of the operation switch can be reduced. It is possible to prevent malfunction.

  In carrying out the present invention, the operation switch includes a first switch group provided in a waist belt portion of the seat belt for restraining the occupant's waist to a seat, and a shoulder belt portion of the seat belt for restraining the shoulder of the occupant. A second switch group provided, and the control means sets an air-conditioning mode of an air conditioner mounted on the vehicle according to the operation of the first switch group, and according to the operation of the second switch group. It is also possible to change the set state of the air conditioning mode that has been set. In this case, for example, the first switch group includes a plurality of switch groups that can set a blower mode, a temperature mode, or a blowing mode according to the position of the waist belt portion, and the control means includes the switch groups. The corresponding air-conditioning mode is set by turning on an arbitrary operation switch belonging to, and the blower in the set blower mode is turned on by continuously turning on the shoulder belt portion from the top to the bottom in the second switch group. The blower mode that is set by lowering the air volume or the set temperature of the temperature mode, or switching the outlet of the outlet mode from the upper side to the lower side and continuously turning on from the bottom along the shoulder belt portion. Increase the blower air volume or set temperature of the temperature mode, or move the air outlet of the air outlet mode from the lower side to the upper side. It may be configured to replace Ri.

  According to this, it is possible to set the air conditioning mode of the air conditioner mounted on the vehicle according to the operation of the first switch group, and the setting of the air conditioning mode set according to the operation of the second switch group It is possible to change the state. Thus, by defining the role of each operation switch provided on the seat belt, the setting of the air conditioning mode and the change of the setting state can be easily understood. For this reason, the operability of the operation switch is improved, and the convenience can be improved.

  Further, in the implementation of the present invention, the control means can determine the operation content by each switch input on condition that the first switch group and the second switch group are turned on a plurality of times. .

  According to this, for example, when the occupant unintentionally presses the seat belt while driving, it is possible to prevent a situation in which the operation switch is turned on regardless of the occupant's intention. For this reason, it is possible to further reduce the erroneous operation of the operation switch.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 schematically show a seat belt switch device according to the present invention, and this seat belt switch device includes a seat belt 10.

  One end of the seat belt 10 is attached to the vehicle body via a floor anchor (not shown) at one side lower part of the driver seat S, and the other end is connected to a retractor (not shown) so as to be wound up. The intermediate portion is wound around the shoulder anchor 21 at the upper side portion of the driver seat S. The shoulder anchor 21 is provided on a pillar garnish (not shown) so as to be movable in the vertical direction. A tongue plate 22 is assembled between one end portion and an intermediate portion of the seat belt 10 so as to be movable along the longitudinal direction of the seat belt 10. The tongue plate 22 can be attached to and detached from the buckle 23 that is attached to the frame (not shown) so as to be tiltable on the other side of the driver seat S.

  In a state where the tongue plate 22 is inserted into the buckle 23 and the seat belt 10 is worn, the waist of the occupant is restrained by the waist belt portion 10a of the seat belt 10, and the shoulder of the occupant is restrained by the shoulder belt portion 10b of the seat belt 10. Be bound.

  As shown in FIG. 3, the seat belt 10 includes a synthetic fiber belt member 11 and a seat member 12 (skin), and an operation switch 30 is provided on the surface of the belt member 11 (the front surface in the mounted state). It is affixed. The sheet member 12 is an elastically deformable film member and integrally covers the belt member 11 and the operation switch 30.

  The operation switch 30 is for changing the setting of the air conditioning mode of the air conditioner and its setting state, and a plurality of operation switches 30 are provided on the waist belt portion 10a and the shoulder belt portion 10b, respectively. Each operation switch 30 has a thickness of about 0.3 mm, and includes an upper substrate 31, a lower substrate 32, a spacer 33, and electrodes 34 and 35, as shown in FIG.

  The upper base material 31 and the lower base material 32 are elastic conductors having a predetermined resistance value, and are arranged to face each other with spacers 33 over almost the entire width of each belt portion 10a, 10b. The spacer 33 is an insulator and is interposed at both end portions of the upper base material 31 and the lower base material 32. The electrode 34 is made of silver / carbon and is attached to the inner surface of the upper base 31. The electrode 35 is made of a pressure-sensitive element and is attached to the inner side surface of the lower substrate 32. As shown by the broken line in FIG. 5, the resistance value of this electrode 35 decreases rapidly as the load (pressing force) increases, and after the load becomes a predetermined magnitude, the resistance value becomes a predetermined small value. It has the characteristics shown (on / off characteristics). Thereby, when each belt part 10a, 10b is pressed, the upper base material 31 and the lower base material 32 are elastically deformed, and the upper base material 31 and the lower base material 32 are electrically connected by the contact between the electrode 34 and the electrode 35.

  Returning to FIG. 2, the upper base material 31 and the lower base material 32 are connected to the seat belt switch ECU 51 via terminals not shown. The seat belt switch ECU 51 calculates a resistance value corresponding to the position of the pressed operation switch 30, and identifies the pressed operation switch 30.

  The operation switch 30 (first switch group) provided on the waist belt portion 10a includes a blower setting selection area 10a1 and a temperature setting selection area 10a2 which are set for approximately one third of the length (BC) of the waist belt portion 10a. Are assigned in the balloon setting selection area 10a3. Specifically, the air conditioning mode can be set to the blower mode by pressing an arbitrary operation switch 30 belonging to the blower setting selection area 10a1. Further, the air conditioning mode can be set to the temperature mode by pressing an arbitrary operation switch 30 belonging to the temperature setting selection area 10a2. In addition, the air conditioning mode can be set to the balloon mode by pressing any operation switch 30 belonging to the balloon setting selection area 10a3.

  The operation switch 30 (second switch group) provided on the shoulder belt portion 10b functions to change the setting state of each mode. Specifically, when the blower mode is set, the blower air volume can be lowered by continuously pressing an arbitrary operation switch 30 downward from point A to point B of the shoulder belt portion 10b. . On the contrary, the blower air volume can be increased by continuously pressing the arbitrary operation switch 30 upward from the B point toward the A point. Similarly, when the temperature mode is set, the temperature can be lowered by continuously pressing the arbitrary operation switch 30 downward from the point A toward the point B. On the contrary, the temperature can be raised by continuously pressing an arbitrary operation switch 30 upward from point B toward point A. Further, when the blowing mode is set, a face mode for blowing air toward the upper body of the occupant by continuously pressing an arbitrary operation switch 30 downward from point A to point B; Foot for blowing air toward the passenger's feet and the inner surface of the windshield via the bi-level mode for blowing air toward the upper body and feet of the passenger, and the foot mode for blowing air toward the feet of the passenger / Sequential switch to defroster mode. Contrary to this, by successively pressing an arbitrary operation switch 30 upward from point B to point A, the mode is switched to face mode through foot / defroster mode, foot mode, and bi-level mode. Can do.

  The seat belt switch ECU 51 includes a microcomputer including a CPU, a ROM, a RAM, a timer, an interface, and the like as main components. When the ignition switch is turned on, the air-conditioning control program of FIG. Each time, the control signal corresponding to the execution is transmitted to the air conditioner ECU 61 connected via the Lin communication line. The air conditioner ECU 61 drives a compressor, a blower, and the like according to the control signal or the control signal from the air conditioner panel 62, and performs a display change process of the air conditioner panel 62. A seat switch 52 and a seating sensor 53 are connected to the seat belt switch ECU 51.

  The mounting switch 52 (mounting detecting means) outputs an ON signal to the seat belt switch ECU 51 when the tongue plate 22 is inserted into the buckle 23, that is, when the seat belt 10 is mounted, and the tongue plate 22 is not inserted into the buckle 23. When the seat belt 10 is not worn, an off signal is output to the seat belt switch ECU 51. The seating sensor 53 (seat detection means) is provided inside the seat S and outputs an ON signal to the seat belt switch ECU 51 when the seating of the occupant is detected on the seat S and does not detect the seating of the occupant. An off signal is output to the seat belt switch ECU 51.

  Next, the operation of the present embodiment configured as described above will be described. The seat belt switch ECU 51 repeatedly executes the air-conditioning control program of FIG. 6 every predetermined short time by turning on the ignition operation switch.

  The air conditioning control program of FIG. 6 is started in step S10, and it is determined whether or not the seat belt switch flag SF is set to “1” in step S11. The seat belt switch flag SF indicates that the input by the operation switch 30 is not in an active state by “0”, and indicates that the input by the operation switch 30 is in an active state by “1”. 0 ”is set. At the first execution of this air conditioning control program, since the seat belt switch flag SF is still set to “0”, “No” is determined in step S11, and the process proceeds to step S12.

  In step S12, a detection signal from the seating sensor 53 is input to determine whether or not an occupant is seated on the driver's seat S. In step S13, a detection signal from the mounting switch 52 is input to determine whether the occupant is wearing the seat belt 10. If the occupant is not seated in the driver's seat S, or if the occupant is seated in the driver's seat S but is not wearing the seat belt 10, the determination is “No” in step S12 or S13. In step S14, the seatbelt switch flag SF is maintained and set to “0”, and then the execution of the air conditioning control program is terminated in step S31.

  On the other hand, when the occupant is seated on the driver's seat S and the seat belt 10 is worn, it is determined as “Yes” in steps S12 and S13, and the processing after step S15 is executed. In step S15, the seat belt switch flag SF is set to “1”.

  In step S16, point A and point B (see FIG. 2) are detected, and the position of the operation switch 30 due to the body shape difference is corrected. Point A corresponds to a bent portion of the seat belt 10 by the shoulder anchor 21, and point B corresponds to a bent portion of the seat belt 10 by the tongue plate 22. Here, the shoulder anchor 21 and the tongue plate 22 are provided with protrusions (not shown), and the operation switch 30 located at the points A and B is pressed by the protrusions to be turned on. . As described above, the point A and the point B are detected because the pull-out amount of the seat belt 10 differs depending on the occupant's body shape. Therefore, the points A and B are set according to the occupant. This is because it is necessary to make the relative position detectable.

  In step S17, the initial resistances of all the operation switches 30 are measured, and the sensitivity of the operation switches 30 is corrected. This is because the initial pressure applied to each operation switch 30 varies depending on the occupant's body shape with the seat belt 10 being worn, and the operation switch 30 that is not being pushed except points A and B is turned on. In this case, since it is necessary to keep the sensitivity of all the operation switches 30 constant by setting the contact resistance of the operation switch 30 in the ON state other than the points A and B to be larger. It is.

  Subsequently, in step S18, it is determined whether or not an arbitrary operation switch 30 located between the points B and C has been turned on. If the operation switch 30 is not turned on, “No” is determined in step S18. Since the air conditioning mode has not yet been set at this time, “No” is determined in step S19, and the execution of the air conditioning control program is terminated in step S31.

  On the other hand, within the predetermined short time n1 (measured by the timer of the seat belt switch ECU 51) from the time when the arbitrary operation switch 30 located between the points B and C is turned on, the position is again located between the points B and C. When any one of the operation switches 30 is turned on, the following processing is executed according to the pressed position. This is because any one of the operation switches 30 located between the points B and C may be turned on due to an erroneous operation, so that the push operation of the operation switch 30 by the driver's will is confirmed. The air conditioning mode is set. Therefore, when an arbitrary operation switch 30 located between the points B and C is turned on only once, it is determined as “No” in steps S20, S22, and S24, and in step S31. The execution of this air conditioning control program is terminated.

  When the operation switch 30 located within (BC) / 3 from the point B is turned on within the time n1 from the time of turning on the arbitrary operation switch 30 located between the points B and C, step S21. To set the blower mode, and set the operation switch 30 at points A to B to the blower switch. Further, when the operation switch 30 located within (BC) / 3 or more and less than 2 (BC) / 3 (center part) from the point B is turned on, the temperature mode is set in step S23, and A The operation switch 30 at points B to B is set as a temperature switch. Further, when the operation switch 30 located within (BC) / 3 from the point C is turned on, in step S24, the balloon mode is set, and the point A to point B operation switch 30 is set as the balloon switch. To do. Then, the operation switch of the air conditioner panel 62 corresponding to the set air conditioning mode is turned on. It progresses to step S26 after the process of step S21, S23, S25.

  In step S26, it is determined whether or not the arbitrary operation switch 30 located between the points A and B is turned on. If the operation switch 30 is not turned on, “No” is determined in step S26. In S31, the execution of the air conditioning control program is terminated.

  On the other hand, in a predetermined short time n2 (measured by the timer of the seat belt switch ECU 51) from the time when the arbitrary operation switch 30 located between the points A and B is turned on, the point downwards from the point A toward the point B When the ON operation is continuously performed, or when the ON operation is continuously performed upward from the B point toward the A point, the following processing is executed according to the ON operation direction. This is because an arbitrary operation switch 30 located between the points A and B may be turned on due to an erroneous operation, so that the continuous pushing operation of the operation switch 30 by the driver's will has been confirmed. As a condition, the level of the set air conditioning mode is changed. Therefore, when an arbitrary operation switch 30 located between the points A and B is turned on only once, or when the operation switch 30 is not continuously turned on, the process goes to steps S27 and S29. In step S31, the execution of the air conditioning control program is terminated.

  When the operation switch 30 is continuously turned on downward from the point A to the point B, the set amount of the currently set air conditioning mode is reduced in step S28. On the other hand, when the operation switch 30 is continuously turned on upward from the point B toward the point A, the set amount of the currently set air conditioning mode is increased in step S30.

  Thereafter, when the operation switch 30 located between the points B and C is not turned on, the processes after steps S11, S18, S19, and S26 are repeatedly executed, and the currently set air conditioning mode is maintained and set. Through the process of step S27 or S29, the setting state of the air conditioning mode set by the process of step S28 or S30 can be changed. On the other hand, when the operation switch 30 located between the points B and C is turned on, the settings of the air conditioning mode are changed by the processes of steps S21, S23, and S25 through the processes of steps S20, S22, and S24. be able to.

  As is clear from the above description, in this embodiment, on the condition that the seating of the occupant is detected by the process of step S12, and the wearing of the seat belt 10 is detected by the process of step S13. The switch input by the operation switch 30 after step S18 is set to be valid.

  For this reason, only when the seat belt 10 is properly used by a passenger on the seat S, the switch input by the operation switch 30 is accepted, so that erroneous operation of the operation switch 30 can be reduced, and the air conditioner can be reduced. Can be prevented from malfunctioning.

  In this embodiment, the blower mode can be set by pressing an arbitrary operation switch 30 in the blower setting selection area 10a1 of the waist belt portion 10a, and an arbitrary operation switch 30 in the temperature setting selection area 10a2. The temperature mode can be set by pressing, and the balloon mode can be set by pressing any operation switch 30 in the balloon setting selection area 10a3. Further, the setting state of the set air-conditioning mode by continuously pressing the arbitrary operation switch 30 downward from the point A to the point B of the shoulder belt portion 10b or upward from the point B to the point A. Can be changed. In this way, by defining the role of each operation switch 30 provided on the seat belt 10, the setting of the air conditioning mode and the change of the setting state can be easily understood. For this reason, the operativity of the operation switch 30 becomes favorable and it is possible to improve the convenience.

  Further, in this embodiment, the operation switch 30 provided on the waist belt portion 10a is configured to perform step S18 and step S20, step S18 and step S22, or step S18 and step S24 with two on operations as conditions. The operation contents in S21, S23, and S25 are set to be confirmed. Further, the operation switch 30 provided on the shoulder belt portion 10b is such that the operation contents in steps S28 and S30 are determined, respectively, on condition that the two on operations of step S26 and step S27 or step S26 and step S29 are performed. Is set to

  Accordingly, for example, when the occupant unintentionally presses the seat belt 10 while driving, it is possible to prevent a situation in which the operation switch 30 is turned on regardless of the intention of the occupant. As a result, the erroneous operation of the operation switch 30 can be further reduced.

  In the above embodiment, the operation switch 30 provided in the waist belt portion 10a is configured to be assigned to the blower setting selection area 10a1, the temperature setting selection area 10a2, and the blowout setting selection area 10a3, respectively. Alternatively, the operation switch 30 can function as an auto operation switch that performs full auto control of an air conditioner, an A / C operation switch that drives a compressor, and an inside / outside air switching operation switch that switches the intake port to inside air or outside air. is there.

  Further, in the above-described embodiment, predetermined operation contents are determined on the condition that the operation switch 30 provided on the waist belt portion 10a and the operation switch 30 provided on the shoulder belt portion 10b are each turned on twice. Instead of this, instead of this, for example, each on operation is performed once, and finally the on operation is required to determine the operation content. You may comprise so that the content may be decided.

  In the above embodiment, an electrode made of a pressure-sensitive element is used as the operation switch 30. Alternatively, for example, a capacitance type may be used.

  In the above embodiment, the seating sensor 53 is used as the seating detection means, but in addition to or instead of this, for example, by a vehicle interior camera, a seat belt wearing operation switch, an occupant collation using an electronic key, or a heart rate sensor. You may make it detect the passenger | crew in a vehicle interior.

  Further, a cancel operation switch for invalidating operation switch input by the operation switch 30 may be provided.

The schematic diagram which shows the operation switch provided in the seatbelt switch apparatus by this invention. The block diagram which shows the seatbelt switch apparatus of FIG. FIG. 3 is a transverse sectional view of the seat belt of FIG. 2. FIG. 4 is a cross-sectional view of the operation switch of FIG. 3. Explanatory drawing which shows the resistance-load characteristic of the operation switch of FIG. The flowchart which shows the air-conditioning control program performed by seatbelt switch ECU of FIG.

Explanation of symbols

S Driver's seat 10 Seat belt 10a Waist belt portion 10a1 Blower setting selection area 10a2 Temperature setting selection area 10a3 Blowout setting selection area 10b Shoulder belt portion 11 Belt member 12 Seat member 21 Shoulder anchor 22 Tang plate 23 Buckle 30 Operation switch 31 Upper base Material 32 Lower base material 33 Spacer 34, 35 Electrode 51 Seat belt switch ECU (control means)
52 Wearing switch (wearing detection means)
53 Seating sensor (sitting detection means)
61 Air conditioner ECU
62 Air conditioning panel

Claims (4)

In the seat belt switch device provided with a plurality of operation switches along the longitudinal direction of the seat belt,
Seating detection means for detecting the seating of the occupant;
A wearing detection means for detecting the wearing of the seat belt,
Control means for enabling switch input by the operation switch is provided on the condition that seating of the occupant is detected by the seating detection means and seat belt wearing is detected by the mounting detection means. Seat belt switch device.   The operation switch includes a first switch group provided at a waist belt portion of the seat belt for restraining a passenger's waist to a seat, and a second switch provided at a shoulder belt portion of the seat belt for restraining a passenger's shoulder. A control unit configured to set an air conditioning mode of an air conditioner mounted on a vehicle according to an operation of the first switch group, and set the air conditioning mode according to an operation of the second switch group. The seat belt switch device according to claim 1 which changes a mode setting state.   The first switch group has a plurality of switch groups that can set a blower mode, a temperature mode, or a blow-out mode according to the position of the waist belt portion, and the control means can perform any operation belonging to each switch group. A corresponding air-conditioning mode is set by turning on the switch, and the blower air volume or the temperature mode set in the blower mode is set by continuous on-down operation along the shoulder belt portion in the second switch group. The blower air volume in the blower mode or the set air flow in the blower mode or by switching the blowout port in the blowout mode from the upper side to the lower side and continuously turning upward from the bottom along the shoulder belt portion. The temperature set in the temperature mode is increased, or the outlet of the outlet mode is switched from the lower side to the upper side. Seat belt switch device as claimed.   4. The seat belt switch device according to claim 3, wherein the control means determines an operation content by each switch input on condition that the first switch group and the second switch group are turned on a plurality of times. 5.

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