JP2006131088A - Tang taking out auxiliary device and seat belt device using this - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tang taking out auxiliary device capable of further enhancing simplicity of handling of the tang and certainty of taking out of the tang by an occupant. <P>SOLUTION: The tang taking out auxiliary device 10 for carrying the tang slidably supported on a seat belt to a tang taking out position set at a front side of the occupant seating on a vehicle seat 2 is provided with a tang receiving member 18 placed with the tang and carrying it to the tang taking out position; a rod 17 mounted with the tang receiving member 18 and telescopically and slidably constituted from four rod members 13, 14, 15, 16; and a motor 32 for expanding/contracting the rod 17. The tang receiving member 18 is moved between a storage position and the tang taking out position by expanding/contracting the rod 17 by the motor 32. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a seat belt device that is installed in a vehicle such as an automobile and restrains and protects an occupant by a seat belt, and assists in taking out a tongue that is supported by a seat belt and locked to a buckle that is fixed to a vehicle body or the like. The present invention relates to a technical field of a tongue extraction assisting device and a seat belt device using the same.

  Conventionally, a seat belt device attached to a vehicle seat of an automobile or the like is used to restrain the occupant from the seat of the occupant by restraining the occupant with the seat belt in an emergency such as when a large deceleration acts on the vehicle such as a collision. Prevents popping out and protects passengers.

  Conventionally, as one of such conventional seat belt devices, for example, there is a three-point seat belt device as shown in FIG. In the figure, 1 is a seat belt device attached to a vehicle seat 2, and 3 is fixed to a vehicle body in the vicinity of the vehicle seat 2 so that the seat belt 4 can be retracted in a normal state and cannot be pulled out in an emergency. The seat belt retractor 5 is a tongue that is slidably supported by the seat belt 4, 6 is a buckle that is fixed to the vehicle seat 2 or the vehicle body, and the tongue 5 is locked, and 7 is a vehicle such as the center pillar 8. It is a belt guide that guides the seat belt 4 attached to the upper side and pulled out from the seat belt retractor 3. The belt anchor portion 4a at the tip of the seat belt 4 pulled out from the seat belt retractor 3 is fixed to the vehicle seat 2 or the vehicle body.

  In the seat belt device 1 configured as described above, when the occupant wears the seat belt 4, the occupant sits on the vehicle seat 2, pulls out the seat belt 4 from the seat belt retractor 3, and engages the tongue 5 with the buckle 6. After stopping, when the hand is released from the tongue 5, the excessively pulled out seat belt 4 is wound up by the seat belt retractor 3, the slack of the seat belt 4 is eliminated, and the seat belt 4 is attached to the occupant.

  By the way, in such a seat belt device 1, when the seat belt 4 is not worn, the seat belt 4 is wound around the seat belt retractor 3 with almost no slack. Therefore, for example, the seat belt 3 between the belt guide 7 attached to the center pillar 8 and the belt anchor portion 4 a of the fixed seat belt 4 is positioned substantially along the center pillar 8. For this reason, the tongue 5 supported by the seat belt 3 is also located in the vicinity of the center pillar 8.

  However, if the tongue 5 is in such a position when the seat belt 4 is not worn, when the occupant is seated on the vehicle seat 2, the tongue 5 is positioned on the side and rear of the occupant. For this reason, when an occupant seated on the vehicle seat 2 tries to pick up the tongue 5 by hand in order to attach the seat belt 4, he / she has to take the tongue 5 in an unstable posture facing back. However, there is a problem that handling of the tongue 5 for engaging the tongue 5 with the buckle 6 is troublesome.

In view of this, a seat belt presenter device has been proposed in which an occupant seated in a vehicle seat can easily take the tongue and handle the tongue easily when the seat belt is worn (see, for example, Patent Document 1).
A seat belt presenter device disclosed in Patent Document 1 includes a telescopic rod that is provided to be stretchable and a belt hanger portion that is formed so that a webbing provided at the tip of the rod can be freely fitted, and a rod. And a motor for extending and contracting. When the occupant gets on the vehicle and closes the door and turns on the ignition switch, the motor is driven to extend the rod, and the belt hanger part projects forward. As a result, the seat belt loosely fitted in the belt hanger part also advances forward, and the tongue supported by the seat belt is guided to a position where it can be easily reached by the passenger. When the occupant takes the tongue with his hand and inserts it into the buckle, or when the belt hanger part protrudes forward even if the tongue does not take, the motor is driven in reverse to drive the rod. Is shrunk.
Japanese Utility Model Publication No. 61-176047 full text gazette (for example, claims for utility model registration, Fig. 1).

  However, in the seat belt presenter device disclosed in Patent Document 1, the belt hanger portion is protruded forward, and the seat belt is merely advanced to the front position. Not necessarily. For this reason, when the seat belt is mounted, not only is the convenience of handling the tongue by the occupant not sufficient, but there is no certainty of taking out the tongue, and it is difficult to easily mount the seat belt.

  In addition, when the passenger gets on the vehicle, closes the door, and turns on the ignition switch, the rod is extended. For example, an occupant other than the driver such as an occupant seated in the passenger seat can extend the rod. Is not involved in anything. For this reason, even if an occupant other than the driver gets on the vehicle ahead of the driver and tries to put on the seat belt, the seat belt does not advance to the front of the occupant, and the handling of the tongue by the occupant other than the driver is easy Not only is it not sufficient, but there is no certainty of taking out the tongue, and it is even more difficult to easily attach the seat belt.

  Moreover, when the occupant picks up the tongue with his hand and engages it with the buckle, the belt hanger part is still in the front when the rod is contracted. The belt is not set at an appropriate position for the occupant, and the occupant feels uncomfortable. Furthermore, when a predetermined time has elapsed from when the belt hanger part protrudes forward, if the rod is contracted, if the occupant is delayed in taking the tongue due to troublesome seating, etc., the occupant Despite not taking it yet, the seatbelt falls back and the tongue is also located backward. Thereby, not only the convenience of handling the tongue by the occupant is not sufficient, but also the tongue cannot be taken out more reliably.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a tongue take-out assisting device that can further improve the ease of handling of the tongue by the occupant and the reliability of taking out the tongue. Is to provide.
Another object of the present invention is to provide a seat belt device that can be easily attached to the seat belt so that the tongue can be easily handled and the tongue can be taken out reliably.

  In order to solve the above-described problem, the tongue take-out assisting device according to the first aspect of the present invention provides a tongue take-out set in front of an occupant seated on a vehicle seat with a tongue slidably supported by a seat belt. A tongue take-out assisting device that carries the tongue to a position, the tongue receiving member that places the tongue and carries the tongue to the tongue take-out position, and a moving means that moves the tongue receiving member between a retracted position and the tongue take-out position. And a drive device for operating the moving means.

Further, in the tongue extraction assisting device according to the second aspect of the present invention, the moving means is a rod configured to telescopically extend from a plurality of rod members, and the driving device is a motor that expands and contracts the rod. It is a feature.
Further, in the tongue take-out assisting device of the invention of claim 3, the tongue receiving member has a tongue receiving tray on which the tongue is placed, and the outer dimension of the tongue receiving tray is set smaller than the outer dimension of the gripping portion of the tongue. It is characterized by having.
Furthermore, the tongue take-out assisting device of the invention of claim 4 is provided on the vehicle seat or the vehicle body.

Further, the seat belt device of the invention of claim 5 includes a seat belt that restrains an occupant, a seat belt retractor that is provided on a vehicle body and constantly urges the seat belt in a winding direction, and is slidable on the seat belt. 4. A seat belt device comprising at least a supported tongue and a buckle provided on a vehicle body, into which the tongue is inserted and engaged, comprising the tongue take-out assisting device according to any one of claims 1 to 3. It is characterized by that.
Furthermore, the seat belt device of the invention of claim 6 is a buckle moving means for moving the buckle between a retracted position and a use position where an occupant inserts and engages the tongue, and a buckle drive for operating the buckle moving means. When driving the drive device of the tongue moving means to move the device and the tongue from the storage position to the tongue take-out position, the buckle is interlocked with the drive of the tongue drive device, and the buckle is moved to the storage position and the occupant. And a control device for driving the buckle driving device to move the tongue to a use position where the tongue is inserted and engaged.

  According to the tongue take-out assisting device according to the first to fourth aspects of the present invention configured as described above, when the tongue receiving member is moved from the retracted position to the tongue taking-out position for mounting the seat belt, Since the passenger is seated on the vehicle seat, the passenger can easily take out the tongue with his / her hand. Thereby, when the seat belt is mounted, the convenience of handling the tongue by the occupant can be sufficiently improved, and the tongue can be reliably taken out.

  In addition, even when an occupant other than the driver gets on the vehicle before the driver and tries to put on the seat belt, the tongue receiving member can be set to the tongue extraction position to reliably carry the tongue to the tongue extraction position. it can. Therefore, compared with the above-mentioned patent document 1, the handling of the tongue by the occupant other than the driver can be improved, and the reliability of the tongue removal by the occupant other than the driver can be improved.

  Further, when the outer dimension of the tongue receiving plate of the tongue receiving member is made larger than the outer dimension of the tongue holding portion and the tongue holding portion is placed on the tongue receiving plate, the outer peripheral edge of the tongue receiving portion is more than the outer peripheral edge of the tongue receiving plate. Since it protrudes outward, the occupant can grip the grip portion without gripping the tongue tray when gripping the grip portion of the tongue by hand. As a result, the tongue can be taken out more easily and more reliably.

Further, when the tongue take-out assist device is attached to the vehicle seat, even if the front / rear position of the vehicle seat is adjusted by the occupant, the tongue take-out assist device moves together with the vehicle seat forward / backward movement. The take-out position is not changed, and the tongue take-out position can be made substantially constant for the occupant seated on the vehicle seat, thereby improving the reliability of taking out the tongue.
In addition, when the tongue removal assist device is attached to the vehicle body, the tongue removal assist device does not get in the way when the occupant adjusts the front / rear position of the vehicle seat. The position can be easily adjusted.

  According to the seat belt device of the fifth aspect of the invention, by applying the tongue take-out assisting device according to any one of the first to fourth aspects to the seat belt device, an insertion engagement operation between the tongue and the buckle is performed. Therefore, the seat belt can be easily attached.

  Further, according to the seat belt device of the invention of claim 6, when the tongue is transported from the storage position to the tongue take-out position, the buckle is moved from the storage position to the use position in conjunction with the transport. When not worn, both the tongue take-out assisting device and the buckle do not get in the way, and when the seat belt is worn, the occupant can easily insert and engage the tongue with the buckle.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 schematically shows an entire embodiment of an embodiment of a tongue take-out assisting device according to the present invention, (a) is a view of a vehicle seat viewed from the left side, and (b) is a vehicle seat viewed from the front. FIG. 3C is a view of the vehicle seat as viewed from below. In the following description of each example, the same components as those in the previous examples and the same components as those in the conventional example shown in FIG. Reference numerals not shown in the drawings used in the above are substituted with those shown in the other drawings).

  As shown in FIGS. 1 (a) to 1 (c), a tongue take-out assisting device 10 of this example is provided on the left side of the vehicle seat 2 on the left side of the vehicle body and carries a tongue 5 to a tongue take-out position. 11 and a drive unit 12 for operating the tongue transport unit 11.

  As shown in FIGS. 2 (a) and 2 (b), the tongue transporting portion 11 is composed of a rod (telescopically movable) that is telescopically extended from four cylindrical rod members 13, 14, 15, and 16. 17), and a tongue receiving member 18 provided at the tip of the rod member 16 having the smallest diameter.

  As shown in an enlarged view in FIGS. 3A to 3C, the tongue receiving member 18 has a substantially disc-shaped tongue receiving tray 19, and a tongue receiving surface 19a of the tongue receiving tray 19 has a tongue 5 described later. Is carried to the tongue removal position. An elongated through hole 20 extending in the radial direction is formed in the center portion of the tongue tray 19, and the seat belt 4 is slidably passed through the through hole 20. A mounting portion 21 is provided on a surface opposite to the tongue receiving surface 19 a of the tongue receiving tray 19 at an eccentric position of the surface, and the mounting portion 21 is attached to the tip of the rod member 16 having the smallest diameter. . In that case, the tongue tray 19 is provided so as to extend downward from the mounting portion 21.

  As shown in FIG. 3 (d), the tongue 5 to be placed on the tongue tray 19 includes a circular arc-shaped plate-shaped gripping portion 22 having a diameter slightly larger than the diameter of the tongue tray 19, and the occupant grips the tongue 5 by hand. The locking portion 23 is provided so as to protrude from the gripping portion 22 and is inserted into and engaged with the buckle 6. A pair of holes 24 and 25 that extend in the radial direction and in parallel with each other and communicate with each other are formed on the side opposite to the side shown in FIG. The seat belt 4 descending from the belt guide portion 7 is inserted into the hole 24 on the side far from the locking portion 23 and slides on the tongue 5 so as to be inserted from the hole 25 on the side close to the locking portion 23. It can be inserted freely.

  As shown by a two-dot chain line in FIG. 3A, the tongue 5 is placed on the tongue tray 19 with the gripping portion 22 so that the locking portion 23 faces downward. At this time, the portion 25 of the grip portion 22 between the pair of holes 24 and 25 is pressed against the tongue tray 19 by the belt winding force of the seat belt retractor 3, so that the grip portion 22 is placed on the tongue tray 19. Is to be certain. Moreover, since the tongue tray 19 has a relatively wide flat surface, the tongue 5 is placed on the tongue receiving member 18 in a stable manner.

  Further, the outer dimension of the tongue tray 19 is smaller than the outer dimension of the grip portion 22 by setting the diameter of the tongue tray 19 slightly smaller than the diameter of the grip portion 22 of the tongue 5. Therefore, when the grip portion 22 of the tongue 5 is placed on the tongue tray 19, the outer peripheral edge of the grip portion 22 of the tongue 5 protrudes outward from the outer peripheral edge of the tongue tray 19. Thus, when the occupant grips the grip portion 22 of the tongue 5 by hand, the occupant is prevented from holding the tongue tray 19 together.

  Since the telescopic structure composed of the four cylindrical rod members 13, 14, 15, 16 may be of a conventionally known telescopic structure, the description thereof is omitted. The rod 17 can be set to a contracted state shown in FIG. 2A and an extended state shown in FIG. In the contracted state of the rod 17, the position of the tongue receiving member 18 is the retracted position on the rear left side of the vehicle seat 2, so that the tongue receiving member 18 and the rod 17 do not interfere with the passenger's getting on and off the vehicle. Further, when the rod 17 is extended, the tongue receiving member 18 is slightly positioned inside the vehicle seat 2 as shown in FIG. The position of the tongue receiving member 18 in the extended state of the rod 17 is the front position of the chest or waist of the occupant seated on the vehicle seat 2, and the occupant can easily hang the tongue placed on the tongue receiving member 18 by hand. This is the tongue removal position where it can be removed. Note that the number of rod members is not limited to four, and can be appropriately provided.

  As shown in FIG. 4, the rod member 13 having the maximum diameter is attached to the rod side mounting bracket 26. The rod side mounting bracket 26 is elastically attached to the vehicle seat side mounting bracket 27 via four rubber mounts 28, 29, 30 and 31. The vehicle seat side mounting bracket 27 is attached to the left side of the rear portion of the vehicle seat 2 as shown in FIGS. 1 (a) and 2 (a), 2 (b). In that case, when the rod 17 extends, the rod side mounting bracket 26 and the vehicle seat side mounting bracket 27 are attached to the vehicle seat 2 so that the tongue receiving member 18 is in the above-described tongue extraction position.

  Further, since the rod 17 is elastically supported by the four rubber mounts 28, 29, 30, and 31, the occupant hits the rod 17 or the tongue receiving member 18 in the extended state of the rod 17, and these rods or tongue receivers. When a force is applied to the member 18, the force acting on the rod 17 itself, the tongue receiving member 18 itself, and the mounting portion of the rod 17 is alleviated, and a large force is prevented from acting on them. In that case, the rod 17 itself, the tongue receiving member 18 itself, and the rod 17 by the four rubber mounts 28, 29, 30, 31 regardless of the direction of 360 degrees applied to the rod 17 or the tongue receiving member 18. The force acting on the attachment portion of the vehicle is reliably relieved, but in particular, when a force considered to be the most frequent is applied to the rod 17 or the tongue receiving member 18 from the inside of the vehicle seat 2, the rod 17 itself or the tongue The force acting on the receiving member 18 itself and the mounting portion of the rod 17 is more effectively mitigated.

  As shown in FIGS. 1A to 1C and FIGS. 2A and 2B, the drive unit 12 is provided at the lower portion of the vehicle seat 2. The drive unit 12 includes a motor 32 attached to a lower portion of the seat 2a in the vehicle seat 2, a drive gear 33 that transmits the rotational driving force of the motor 32 with a reduced speed, and four rod members 13 and 14. , 15, 16, a flexible rod telescopic operation cable 34 having a tooth (not shown) that is connected to the rod member 16 having the smallest diameter and always meshes with the drive gear 33, and the seat 2 a of the vehicle seat 2. The cable guide 35 extends obliquely from the left rear part to the right front part and guides the rod telescopic operation cable 34. Since the power transmission structure of the rotational driving force of the motor 32 to the rod telescopic operation cable 34 can be a conventionally known power transmission structure, the description thereof is omitted.

  When the motor 32 is rotationally driven in the direction to feed the rod telescopic operation cable 34 to the rod 17 side, the rod 17 extends telescopically, and the motor 32 rotates in the direction to draw the rod telescopic operation cable 34 toward the cable guide 35 side. When driven, the rod 17 contracts telescopically.

By the way, as shown in FIG. 5, when the seat belt 4 is not attached, the tongue 5 comes into contact with the tongue stopper 41 and stops, as in a conventionally known seat belt device, and does not descend any further. On the other hand, the tongue receiving tray 19 when the tongue take-out assisting device 10 is not in operation is in the retracted position. Therefore, the distance between the position of the tongue 5 when the seat belt 4 is not attached and the tongue tray 19 when stored is set smaller than the extension amount of the rod 17 until the tongue tray 19 reaches the tongue removal position. Thus, the tongue take-out assisting device 10 is activated and the rod 17 is extended so that the tongue receiving tray 19 can reliably receive the tongue 5. In this case, the size of the through hole 20 of the tongue receiving tray 19 is set to a size that allows the tongue stopper 41 to pass through the through hole 20 smoothly when the rod 17 extends.
As a result, when the rod 17 extends and the tongue receiving member 18 tries to move from the retracted position to the tongue removing position, the tongue receiving tray 19 of the tongue receiving member 18 carries the tongue 5 and carries it to the tongue removing position.

  As described above, according to the tongue take-out assisting device 10 of this example, when the tongue receiving member 18 is moved from the retracted position to the tongue taking-out position for mounting the seat belt 4, the tongue 5 is taken out by the tongue receiving member 18. Since it is carried to the position, the occupant seated on the vehicle seat 2 can easily take out the tongue 5 with his / her hand. Thereby, when the seat belt 4 is mounted, the convenience of handling the tongue 5 by the occupant can be sufficiently improved, and the tongue 5 can be reliably taken out.

  Further, even when a passenger other than the driver gets on the vehicle before the driver and tries to attach the seat belt, the tongue receiving member 18 is set to the tongue extraction position and the tongue 5 is surely conveyed to the tongue extraction position. be able to. Therefore, compared with the above-mentioned patent document 1, the handling of the tongue 5 by a passenger other than the driver can be improved, and the reliability of the tongue 5 taken out by the passenger other than the driver can be improved.

  Further, when the outer shape of the tongue receiving plate 19 of the tongue receiving member 18 is made smaller than the outer shape of the holding portion 22 of the tongue 5 and the holding portion 22 of the tongue 5 is placed on the tongue receiving plate 19, the outer peripheral edge of the holding portion 22 of the tongue 5 Is projected outward from the outer peripheral edge of the tongue tray 19, so that the occupant can grip the grip portion 22 without gripping the tongue tray 19 when gripping the grip portion 22 of the tongue 5 by hand. Thereby, the tongue 5 can be taken out more easily and more reliably.

  Further, since the rod 17 is elastically supported by the four rubber mounts 28, 29, 30, and 31, when the passenger hits the rod 17 or the tongue receiving member 18, the rod or the tongue receiving member 18 is contacted. Even if a force is applied, the force acting on the rod 17 itself, the tongue receiving member 18 itself, and the mounting portion of the rod 17 can be reduced by the rubber mounts 28, 29, 30, 31. In that case, the rod 17 itself, the tongue receiving member 18 itself, and the rod 17 by the four rubber mounts 28, 29, 30, 31 regardless of the direction of 360 degrees applied to the rod 17 or the tongue receiving member 18. The force acting on the mounting portion can be reliably relaxed and suppressed. In particular, when a force, which is considered to be the most frequent, is applied to the rod 17 or the tongue receiving member 18 from the inside of the vehicle seat 2, it acts on the rod 17 itself, the tongue receiving member 18 itself, and the mounting portion of the rod 17. The power can be relaxed more effectively.

  Furthermore, since the tongue take-out assisting device 10 is attached to the vehicle seat 2, even if the front / rear position of the vehicle seat 2 is adjusted by the occupant, the tongue take-out assisting device 10 also moves together with the front / rear movement of the vehicle seat 2. The tongue extraction position with respect to the vehicle seat 2 is not changed, and the tongue extraction position can be made substantially constant for the passenger seated on the vehicle seat 2.

  And, by applying the tongue take-out assisting device 10 of this example to the seat belt device, the ease of inserting and engaging the tongue 5 and the buckle 6 is improved, so that the seat belt 4 can be easily attached. it can.

  By the way, in the tongue take-out assisting device 10 of this example, the motor 32 is driven and controlled by an electronic control device (not shown), so that the rod 17 is expanded and contracted, and the tongue receiving member 18 is automatically set to the tongue take-out position or the retracted position. The tongue extraction system is configured.

As shown in FIG. 3A, the tongue take-out system of this example has a tongue take-out sensor 36 that detects that the occupant has taken out the tongue 5 from the tongue receiving member 18 and outputs a tongue take-out signal to the tongue receiving member 18. Provided.
Although not shown, a seating sensor that detects that an occupant is seated on the vehicle seat 2 is provided on the vehicle seat 2, and a door sensor that detects opening and closing of the door is provided on the door. Further, when the rod 17 is extended to the maximum, the tongue receiving member 18 is in the tongue take-out position, and when the rod 17 is contracted to the minimum, the tongue receiving member 18 is in the retracted position, but the maximum extension of the rod 17 is detected. A rod maximum extension sensor and a rod minimum contraction sensor for detecting the minimum contraction of the rod 17 are provided on the rod 17. Since all these sensors may be conventionally known sensors, detailed description thereof will be omitted.

  In the tongue take-out system of this example, the control device controls the drive of the motor 32 according to the motor drive control flow shown in FIG. 6, so that the tongue receiving member 18 is automatically set to the tongue take-out position or the retracted position. Is done.

  That is, as shown in FIG. 6, the door closing signal from the door sensor indicating that the door is closed in step S1 and the seating signal from the seating sensor indicating that the occupant is seated on the vehicle seat 2 in step S2, The control device rotationally drives the motor 32 in the direction in which the rod 17 extends. Then, the rod 17 extends in step S4. In step S5, the control device stops the motor 32 in response to the rod maximum extension signal from the rod maximum extension sensor indicating that the rod 17 has extended to the maximum and the tongue receiving member 18 has reached the tongue extraction position. On the other hand, the tongue 5 carried to the tongue removal position by the tongue receiving member 18 is taken out by the occupant in step S6, and the control device moves the motor 32 in the reverse direction by the tongue removal signal output from the tongue removal sensor 36 in step S7. That is, it is driven to rotate in the direction in which the rod contracts. Then, the rod 17 contracts in step S8. In step S9, the control device stops the motor 32 by a rod minimum contraction signal from the rod minimum contraction sensor indicating that the rod 17 is contracted to the minimum and the tongue receiving member 18 is in the retracted position.

  According to the tongue removing system of this example, when the occupant removes the tongue 5 from the tongue receiving member 18, the rod 17 is contracted. Therefore, when the tongue 5 is inserted into the buckle 6, the rod 17 contracts. Thus, the tongue receiving member 18 is located at or near the retracted position. Therefore, when the occupant engages the tongue 5 and the buckle 6 and releases the hand from the seat belt 4 and the tongue 5, the seat belt 4 can be properly fitted to the occupant, and the uncomfortable feeling that the occupant holds can be prevented.

  Further, unless the occupant reliably removes the tongue 5 from the tongue receiving member 18, the tongue receiving member 18 does not move to the retracted position behind the vehicle seat 2. Thereby, the convenience of handling of the tongue 5 by the occupant can be further improved, and the tang 5 can be taken out more reliably by the occupant.

  Furthermore, since the extension of the rod 17 is started based on the two signals of the door closing signal from the door sensor and the seating signal from the seating sensor, the passenger sits on the vehicle seat 2 and closes the door. In some cases, the rod 17 can be extended for the first time. Accordingly, when the passenger is not seated on the vehicle seat 2, the rod 17 can be prevented from extending even when the door is opened and closed, and when the door is closed, the passenger seated on the vehicle seat 2 can be prevented. Even if the seating posture (driving posture, riding posture, etc.) is changed by trying to take something, the rod 17 can be prevented from extending, and unnecessary extension of the rod 17 can be prevented.

FIG. 7 is a diagram illustrating a control flow of motor driving in another example of the tongue extraction system.
In the control flow shown in FIG. 6 described above, the control device rotationally drives the motor 32 in the direction in which the rod 17 contracts in response to a tongue removal signal from the tongue removal sensor 36 indicating that the tongue 5 has been removed from the tongue receiving member 18. However, in the tongue take-out system of this example, instead of the tongue take-out sensor 36 as shown in FIG. 7, it is detected that the tongue 5 is inserted and engaged with the buckle 6, although not shown. A buckle switch that outputs a combined signal is used. Since this buckle switch can be a conventionally known one, its detailed description is omitted.

That is, similar to the example shown in FIG. 6 described above, after the tongue receiving member 18 is in the tongue extracting position and the motor 32 is stopped in step S5, the tongue 32 is placed on the tongue receiving member 18 and carried to the tongue extracting position in step S10. The occupant takes out the tongue 5 and inserts it into the buckle 6. Then, since the buckle switch detects this and outputs a tongue engagement signal, the control device rods the motor 32 in step S7 in the same manner as in the example shown in FIG. 6 by the tongue engagement signal from this buckle switch. It is rotationally driven in the 17 contraction direction.
The other flow of the motor drive control in this example is the same as the example shown in FIG.

  In the tongue take-out system of this example, the tongue receiving member 18 is maintained in the tongue take-out position until the tongue 5 is inserted into and engaged with the buckle 5, so that the occupant of the example shown in FIG. Although the effect of moving the tongue receiving member 18 to the retracted position when taken out from the member 18 is not obtained, other effects are the same as the example shown in FIG.

FIG. 8 is a perspective view partially showing another example of the embodiment of the tongue extraction assisting device according to the present invention.
In the above-described example, the telescopically telescopic rod 17 is constituted by the four rod members 13, 14, 15, and 16. However, in the tongue take-out assisting device 10 of this example as shown in FIG. Is configured to telescopically extend from the three rod members 14, 15, 16. Therefore, the rod 14 having the maximum diameter is attached to the rod side mounting bracket 26.

  In the above example, the tongue receiving member 18 has a substantially disk-shaped tongue receiving tray 19 as shown in FIGS. 3A to 3C. However, as shown in FIG. In the take-out assisting device, the tongue receiving member 18 is formed in a substantially U shape when viewed from the side. This will be described in detail. As shown in FIG. 9, the tongue receiving member 18 of this example is a flat long side wall 37, a relatively short short side wall 38, and a flat surface connecting these side walls 37 and 38. In addition, it is formed in a substantially U shape in a side view from the substantially rectangular tongue tray 19.

  An attachment portion 21 is provided at the lower end of the long side wall 37, and this attachment portion 21 is attached to the distal end portion of the rod member 16 having the smallest diameter, as in the above example. In addition, a relatively large fan-shaped through hole 39 through which the seat belt 4 slidably passes is formed at the lower end of the long side wall 37. When the tongue receiving member 18 moves from the retracted position to the tongue removing position, the seat belt 4 passing through the through hole 39 changes from an inclined state indicated by A to a substantially horizontal state indicated by B, Conversely, when the tongue receiving member 18 moves from the tongue removal position to the retracted position, the surface of the seat belt 4 passing through the through hole 39 changes from a substantially horizontal state indicated by B to an inclined state indicated by A. Thus, by forming the through hole 39 in a fan shape, the inclination of the surface of the seat belt 4 can be changed smoothly when the tongue receiving member 18 is moved.

  The rectangular tongue tray 19 has a width (length in the belt width direction) set smaller than a width (length in the belt width direction) of the grip portion 22 of the tongue 5. Accordingly, as shown in FIG. 10B, when the tongue receiving member 18 is set at the tongue removal position and the grip portion 22 of the tongue 5 is placed on the tongue receiving plate 19 as shown in FIG. The left and right edges of the grip portion 22 protrude outward from the left and right edges of the tongue tray 19. Therefore, similarly to the above-described example, when the occupant grips the grip portion 22 of the tongue 5, it is possible to prevent the tongue tray 19 from being gripped together.

  Further, in the state shown in FIG. 10A in which the grip portion 22 of the tongue 5 is placed on the tongue tray 19, the grip portion 22 is a relatively wide and flat tongue of the tongue tray 19 by the belt winding force of the seat belt retractor 3. It is pressed against the receiving surface 19a. Therefore, like the above-mentioned example, the mounting of the grip portion 22 on the tongue receiving tray 19 is reliable, and the mounting of the tongue 5 on the tongue receiving member 18 is stable.

  Further, the tongue tray 19 has a rectangular mounting hole 40 penetrating vertically. As shown in FIG. 10A, a tongue removal sensor 36 is attached to the attachment hole 40. Although the tongue receiving member 18 is set to the tongue take-out position, the tongue 5 is not taken out by the occupant and is still on the tongue receiving plate 19 of the tongue receiving member 18, and the grip portion 22 of the tongue 5 is attached to the tongue take-out sensor 36. In the contact state, the tongue removal sensor 36 does not output a tongue removal signal. When the tongue 5 is taken out by the occupant, the grip portion 22 is separated from the tongue take-out sensor 36, so that the tongue take-out sensor 36 outputs a tongue take-out signal.

According to the tongue take-out assisting device 10 of this example, since the tongue tray is formed in a rectangular shape, a rectangular gripping portion of a conventionally known general tongue is adapted to the tongue tray in accordance with the rectangle of the tongue tray. Can be placed on the screen. Thereby, it is not necessary to make the shape of the grip part of a tongue into a special shape, and it can respond to a conventionally well-known general tongue as it is.
Other configurations and other functions and effects of the tongue extraction assisting device 10 of this example are the same as those of the above-described example. Further, other configurations and other functions and effects of the seat belt device using the tongue take-out assisting device of this example are the same as those of the above-described example.

11A and 11B show still another example of the embodiment of the present invention, in which FIG. 11A is a diagram showing a state of a buckle storage position, and FIG. 11B is a diagram showing a state of a buckle use position.
In each of the above examples, the position of the buckle 6 is assumed to be fixed. However, as shown in FIGS. 11A and 11B, in the seat belt device 1 of this example, the buckle 6 is also stored. It is possible to move between and use position. That is, the buckle device 42 includes a buckle 6, a support lever 43 connected to the buckle 6, a lever rotating member 4 that rotates the support lever 43, and a motor that drives the lever rotating member 44. Equivalent to the buckle drive device of the invention) 45.

  The support lever 43 is attached to the vehicle seat 2 or the vehicle body so as to be rotatable in the vehicle front-rear direction by a rotation shaft 46. A long hole 43 a extending in the longitudinal direction is formed on the opposite side of the buckle 6 with respect to the rotation shaft 46 of the support lever 43. The support lever 43 and the lever rotating member 44 are connected to each other so as to be relatively rotatable and relatively movable by a connecting pin 47 that is slidably passed through the elongated hole 43a.

  An end portion of the lever rotating member 44 opposite to the connecting portion with the support lever 43 is connected to a rotating shaft 45 a of the motor 45 by a screw type expansion / contraction mechanism 48. The screw-type expansion / contraction mechanism 48 includes a female screw member 49 fixed to the lever rotating member 44 and a male screw member 50 formed on the rotary shaft 45a and screwed into the female screw member 49. The male screw member 49 may be provided separately from the rotating shaft 45a and connected to the rotating shaft 45a.

  When the rotating shaft 45a of the motor 45 rotates and the male screw member 50 rotates in the same direction, the female screw member 49 reversibly moves in the left-right direction in FIGS. 11A and 11B in accordance with the rotating direction of the motor 45. Thus, the screw-type expansion / contraction mechanism 48 expands and contracts. The motor 45 and the screw-type expansion / contraction mechanism 48 are disposed in the seat cushion 2a of the vehicle seat 2 or below the seat cushion 2a.

  As shown in FIG. 11A, when the buckle 6 is not used, the screw-type expansion / contraction mechanism 48 contracts to the maximum and the support lever 43 becomes substantially vertical, and the buckle 6 is located in the seat back 2b of the vehicle seat 2. Is set to the storage position stored in. Further, as shown in FIG. 11B, when the buckle 6 is used, the screw-type telescopic mechanism 48 extends to the maximum, and the lever rotating member 44 rotates the support lever 43 clockwise about the rotation shaft 46. To do. When the support lever 43 rotates, the connecting pin 47 slides along a long hole 43 a formed in the support lever 43. Then, the buckle 6 passes through a buckle entrance (not shown) formed in the seat back 2b of the vehicle seat 2 and advances to the seat side of the vehicle seat 2 and is set at the use position. When the motor 45 is stopped, the buckle 6 is locked at this use position by screwing the male screw member 49 and the female screw member 50 together. Thus, the buckle moving means of the present invention is constituted by the support lever 43, the lever rotating member 44, the rotating shaft 46, and the connecting pin 47.

  When the buckle 6 is in the storage position shown in FIG. 11A, the motor 45 of the buckle device 42 moves the tongue tray 19 in the storage position to the tongue extraction position, so that the motor 32 of the tongue extraction auxiliary device 10 is When driven by the control device, it is driven by the electronic control device in conjunction with the drive of the motor 32. As a result, the tongue 5 is transported to the tongue take-out position and the buckle 6 is moved to the use position. Therefore, when the seat belt 4 is not attached, both the tongue take-out assisting device 10 and the buckle 6 do not get in the way. When the belt 4 is attached, the occupant can easily insert and engage the tongue 5 with the buckle 6. For example, when the tongue 5 is separated from the buckle 6, the buckle switch is turned off to drive the motor 32 to move the buckle 6 from the use position to the storage position. It only has to be moved.

FIGS. 12A and 12B schematically show still other examples of the embodiment of the present invention, which are the same as FIGS. 11A and 11B, respectively.
In the example shown in FIGS. 11A and 11B described above, the buckle 6 is selectively set to the retracted position or the use position by the rotational movement of the support lever 43, but by the linear movement of the support lever 43, The buckle 6 is selectively set to the storage position or the use position.

  That is, as shown in FIGS. 12 (a) and 12 (b), in the buckle device 42 of this example, the screw type expansion / contraction mechanism 48 is formed on the female screw member 49 and the rotating shaft 5a and is a male screw that is screwed into the female screw member 49. The member 50 is comprised. A cylindrical support lever 43 that supports the buckle 6 is connected to the female screw member 49. The female screw member 49 is provided on a cylindrical guide / regulating member 51 fixed to the vehicle seat 2 or the vehicle body. In that case, the guide / regulating member 51 is arranged on the seat side of the buckle 6 at the position where the buckle 6 is used, and a guide portion 51 a that guides the female screw member 49 so as not to be relatively rotatable and movable in the longitudinal direction of the guide / regulating member 51. It is comprised from the movement control part 51b which controls the movement of the advancing direction.

When the rotating shaft 45a of the motor 45 rotates and the male screw member 50 rotates in the same direction, the female screw member 49 reversibly moves along the axial direction of the rotating shaft 45a in accordance with the rotating direction of the motor 45, so that the screw The telescopic mechanism 48 expands and contracts, that is, the support lever 43 advances from the guide / regulation member 51 or is accommodated in the guide / regulation member 51.
The support lever 43, the screw-type telescopic mechanism 48, and the guide / regulating member 51 constitute the buckle moving means of the present invention.

  As in the case of the buckle device 42 described above, in the buckle device 42 of this example, the storage position shown in FIG. 12A where the buckle 6 is hidden by the vehicle seat 2 and the buckle 6 is the seat of the vehicle seat 2. The use position shown in FIG. 12B that advances to the side is set.

  In the buckle device 42 of this example, unlike the above-described example, the support lever 43 performs a rectilinear movement, but does not perform a rotational movement. Therefore, the movement of the support lever 43 is stabilized, and the setting of the storage position and the use position of the buckle 6 becomes more reliable. In that case, at the position where the buckle 6 is used, the female screw member 49 fixed to the support lever 43 abuts against the movement restricting portion 51b, so that the buckle 6 is locked in the direction of advancing toward the seat side. Is regulated.

Further, in a state where the occupant inserts and engages the tongue 5 with the buckle 6 and wears the seat belt 4, for example, due to inertial movement forward of the occupant caused by a large vehicle deceleration, the seat belt 4 and the tongue 5 are interposed. When a pulling force is applied to the buckle 6, the force is reliably received by the guide / regulating member 51 via the support lever 43 and the female screw member 49.
Other configurations, other operations, and other effects of the buckle device 42 of this example are substantially the same as those of the example shown in FIG.

  It should be noted that the tongue take-out sensor 36 or the buckle switch used to detect the take-out of the tongue used as the trigger signal output means for rotating the motor 32 in the contracting direction of the extended rod 17 is not necessarily provided. It is not necessary and can be omitted. In this case, the motor 32 may be rotationally driven with a manual button. However, in consideration of the ease of handling the tongue 5 and the seat belt 4 mounting ability, the tongue receiving member 18 is automatically moved between the retracted position and the tongue removal position as in the above-described examples. It is desirable.

  Further, the elongated through hole 20 shown in FIG. 3 (b) through which the seat belt 4 penetrates slidably and the fan-shaped through hole 39 shown in FIG. 9 are formed as closed holes. By opening a part of 39 outward, the seat belt 4 can be inserted into the through holes 20 and 39 through this opening. In this way, the seat belt 4 can be easily inserted into the through holes 20 and 39.

  Furthermore, in the above example, the tongue take-out assisting device 10 is provided on the vehicle seat 2, but the present invention is not limited to this, and the tongue take-out assisting device 10 may be provided on a vehicle body such as a floor portion. it can. In that case, when the occupant adjusts the front / rear position of the vehicle seat, the tongue take-out assist device does not get in the way, and even if the tongue take-out assist device is provided, the front / rear position of the vehicle seat can be easily adjusted.

  A tongue take-out assisting device and a seat belt device using the same according to the present invention are seat belt devices that are mounted on a vehicle such as an automobile and that restrain and protect an occupant by a seat belt, and are slidably supported by the seat belt. The tongue can be suitably used in a seat belt device in which a seat belt is mounted on an occupant seated on a vehicle seat by engaging a buckle fixed to the vehicle body.

BRIEF DESCRIPTION OF THE DRAWINGS The whole example of embodiment of the tongue extraction assistance apparatus concerning this invention is shown roughly, (a) is the figure which looked at the vehicle seat from the left side, (b) was the figure which looked at the vehicle seat from the front, ( c) is a view of the vehicle seat as viewed from below. 1 is an enlarged view of the tongue extraction assisting device shown in FIG. 1 as viewed from the left side, (a) is a diagram showing a contracted state of a rod, and (b) is a diagram showing a state where the rod is extended. (A) is a figure which shows the tongue receiving part of the state attached to the rod of the example shown in FIG. 1, (b) is a top view of this tongue receiving part, (c) is a side view of this tongue receiving part, (d ) Is a plan view of a tongue placed on the tongue receiving portion. It is a perspective view which closes the attachment of the rod by a rubber mount. It is a figure explaining receipt of the tongue by a tongue tray. It is a figure which shows the control flow of the motor drive in an example of a tongue extraction system. It is a figure which shows the control flow of the motor drive in the other example of a tongue extraction system. It is a perspective view which shows partially the other example of embodiment of the tongue extraction assistance apparatus concerning this invention. It is a perspective view which shows the tongue receiving part of the example shown in FIG. It is a figure which shows the state in which the holding part of the tongue was mounted in the tongue receiving part of the example shown in FIG. The other example of embodiment of this invention is shown, (a) is a figure which shows the state of the storage position of a buckle, (b) is a figure which shows the state of the use position of a buckle. The other example of embodiment of this invention is shown, (a) is a figure which shows the state of the storage position of a buckle, (b) is a figure which shows the state of the use position of a buckle. It is a figure which shows the conventional common three-point seatbelt apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Seatbelt apparatus, 2 ... Vehicle seat, 3 ... Seatbelt retractor, 4 ... Seatbelt, 5 ... Tongue, 6 ... Buckle, 7 ... Belt guide, 10 ... Tongue removal assistance device, 11 ... Tongue conveyance part, 12 ... Drive part, 13, 14, 15, 16 ... rod member, 17 ... rod, 18 ... tongue receiving member, 19 ... tongue receiving plate, 19a ... tongue receiving surface, 22 ... gripping part, 23 ... locking part, 26 ... rod side Mounting bracket, 27 ... Vehicle seat side mounting bracket, 28, 29, 30, 31 ... Rubber mount, 32 ... Motor, 33 ... Drive gear, 34 ... Rod telescopic operation cable, 36 ... Tang take-out sensor, 39 ... Fan-shaped through-hole , 41 ... tongue stopper, 42 ... buckle device, 45 ... motor, 48 ... screw-type expansion / contraction mechanism, 51 ... guide / regulating member

Claims (6)

A tongue takeout assisting device for carrying a tongue slidably supported by a seat belt to a tongue takeout position set in front of an occupant seated on a vehicle seat,
A tongue receiving member for placing the tongue and carrying the tongue to the tongue removing position; a moving means for moving the tongue receiving member between a retracted position and the tongue removing position; and a driving device for operating the moving means. A tongue extractor assisting device characterized by comprising: 2. The tongue extraction assisting device according to claim 1, wherein the moving means is a rod configured to telescopically extend from a plurality of rod members, and the driving device is a motor that expands and contracts the rod. The said tongue receiving member has a tongue tray which mounts the said tongue, The external dimension of this tongue receiver is set smaller than the external dimension of the holding part of the said tongue, The Claim 1 or 2 characterized by the above-mentioned. Tongue removal assist device. 4. The tongue extraction assisting device according to claim 1, wherein the tongue extraction assisting device is provided on the vehicle seat or the vehicle body. A seat belt that restrains an occupant; a seat belt retractor that is provided on a vehicle body and constantly urges the seat belt in a winding direction; a tongue that is slidably supported by the seat belt; In a seat belt device comprising at least a buckle into which is inserted and engaged,
A seat belt device comprising the tongue take-out assisting device according to any one of claims 1 to 4. Buckle moving means for moving the buckle between a retracted position and a use position where an occupant inserts and engages the tongue, a buckle driving device for operating the buckle moving means, and removing the tongue from the retracted position When driving the drive device of the tongue moving means to move to the position, the buckle is moved to the storage position and the use position where the occupant inserts and engages the tongue in conjunction with the drive of the tongue drive device. 6. The seat belt device according to claim 5, further comprising a control device that drives the buckle driving device.

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