JP4057885B2 - Seat belt leecher device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat belt reacher device.
[0002]
[Prior art]
The seat belt webbing provided in the front seat of the automobile stands by along the side of the seat back when not in use, and when used, the seated passenger should grab the waiting webbing. However, when gripping the webbing, for example, an operation that forces an unreasonable posture such as extending the arm to the side surface of the seat back while twisting the upper body is necessary.
[0003]
Conventionally, as a countermeasure, a reacher device for pushing a part of the webbing to a position where it can be easily reached is provided. As an example of a leecher device, a leecher that rotates between a standby position tilted backward with the rear end of the seat cushion as a fulcrum and a use position that rises forward and upward is used, and the leecher hooks a webbing on its tip during use. However, there is one that is rotated to the use position (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
JP-A-4-159161
[Problems to be solved by the invention]
However, the conventional leecher device has a drawback that the aesthetics around the seat are impaired because the leecher is always exposed regardless of the position of the leecher. In particular, in the case of a luxury car, it is an important solution because it requires not only enhancement of functions but also design sophistication.
[0006]
The present invention has been made in view of the above circumstances, and aims to avoid a decrease in aesthetic appearance around a seat due to the presence of a leecher.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is provided with a leecher that moves the webbing of the seat belt that waits so as to substantially follow the side surface of the seat back to a position ahead of the seat back in the process of shifting from the standby state to the use state. A seat belt reacher device, wherein a housing space capable of storing the reacher in a standby state is provided in a shield provided on a side surface of a seat cushion, and the reacher includes the standby state and the use state. And a holding member that holds the webbing and is supported by the leecher main body, and the leecher is displaced between the standby state and the use state. In the process, the sliding contact portion that is in sliding contact with the webbing in a surface contact state is a longitudinal direction of the holding member and the reacher. It has a configuration which is provided in the direction substantially perpendicular to the stretching direction of the body.
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, a curved portion that gradually changes forward in the seat is set at a connection base end of the sliding contact portion with the holding member.
[0010]
[Action and effect of the invention]
[Invention of Claim 1]
The leecher is always housed in a storage space within the shield. When the seat belt is worn, a part of the webbing moves to a position where it can be easily reached in the process of moving the reacher from the standby state to the use state. When the seat belt is worn, the leecher returns to the standby position and is accommodated in the storage space in the shield. The leecher is exposed only for a short period of time when the occupant performs an action to wear the seat belt, otherwise the leecher is stored inside the shield. Therefore, normally, the leecher is not exposed to the outside, and it is possible to avoid a decrease in aesthetic appearance around the seat due to the provision of the leecher.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
First, the seat 10 will be described. The seat 10 has a seat back 12 pivotally supported at the rear end portion of the seat cushion 11 so that the seat cushion 11 can be adjusted in position in the front-rear direction and the up-down direction, and the seat back 12 is tilted. The angle can be adjusted.
[0014]
On the outer surface side (lower side in FIG. 4) of the seat cushion 11, a shield 13 is provided which extends from the front end (right end in FIG. 4) to the rear end and further extends over a region including the support portion of the seat back 12. ing. The shield 13 has a cover shape that covers the position adjustment mechanism of the seat cushion 11 and the support mechanism (not shown) of the seat back 12. The shield 13 has a side plate and a top plate, and a switch (not shown) for adjusting the seat 10 is provided on the side plate. An opening 14 having a substantially rectangular shape in the front-rear direction is formed at the rear end position of the upper surface plate of the shield 13 so as to pass the webbing 21 and the reacher 30 of the seat belt 20. Further, the outer surface of the shield 13 is smooth as a whole, and is finished in a design that takes into account, for example, design such as embossing.
[0015]
Inside the shield 13, a lower anchor 15 is fixed at a position almost directly below the opening 14, and a position adjacent to the front of the lower anchor 15 and almost directly below the front end of the opening 14. An accommodating space 16 for storing the leecher 30 is provided at the position.
The lower end 15 in the shield 13 is connected to the extended end of the webbing 21 of the seat belt 20, and the extended end of the webbing 21 has a posture in which both the front and back surfaces are directed in the left-right direction (the longitudinal direction of the opening 14). That is, it is fixed so as to take a posture along an elongated opening shape in the front-rear direction. In the fixed state, the surface of the webbing 21 faces outward. A portion of the side plate of the shield 13 corresponding to the lower anchor 15 is a detachable cap 17. In a state where the seat belt 20 is not used, the webbing 21 led upward from the opening 14 extends upward along the outer surface of the seatback 12, is hooked on the shoulder anchor 18, and turns downward. Is wound around a retractor (not shown) in the center pillar. That is, the webbing 21 waits in a state of being tensioned along the side surface of the seat back 12 between the lower anchor 15 and the shoulder anchor 18. Note that the orientation of the front and back surfaces of the webbing 21 in the shoulder anchor 18 is the same as the feeding end portion of the webbing 21 in the shield 13, but a part of the back surface of the webbing 21 is relative to the front lower end portion of the seat back 12. Therefore, the webbing 21 is twisted by about 90 ° at the lower end of the seat back 12 (height close to the opening 14).
[0016]
Next, the leecher 30 will be described.
The leecher 30 includes a leecher main body 31 and a holding member 36. The leecher main body 31 has four cylindrical bodies 32A, 32B, having a substantially square cross section and different sizes from each other (the number is four in this embodiment, but the number may be larger or smaller). 32C, 32D, and another small cylindrical body 32B is fitted to the inner circumference of the largest cylindrical body 32A, and the smaller cylindrical body 32C is fitted to the inner circumference of the cylindrical body 32B. In addition, the plurality of cylinders 32A, 32B, 32C, and 32D are concentrically stacked in order. These cylinders 32A, 32B, 32C, and 32D can be displaced relative to each other along the length direction while guiding each other, and the leecher main body 31 expands and contracts linearly by this relative displacement. It is displaced to. The largest cylindrical body 32A of the leecher main body 31 is fixed by an bracket 33 in the shield 13 in an oblique direction slightly inclined forward from the vertical direction. In a state where the leecher 30 is most contracted (standby state of the leecher 30), the leecher body 31 is entirely stored in the accommodating space 16 in the shield 13 over the entire length. Further, when the leecher main body 31 is extended from this standby state, the other cylinders 32B, 32C, 32D excluding the largest cylinder 32A pass through the front end region of the opening 14 and protrude to the outside of the shield 13. The expanded state becomes the use state of the leecher 30.
[0017]
The leecher main body 31 is expanded and contracted by driving means using a push-pull type control cable 34 that is horizontally arranged inside the seat cushion 11. The control cable 34 has a known structure in which a wire is spirally wound around the outer periphery of a core wire, and is inserted into an outer tube (not shown) fixed by a predetermined path. When a gear (not shown) engaged with the wire is rotated by the motor 35, the control cable 34 reciprocates in the length direction. The front end of the control cable 34 is accommodated in each cylinder 32A, 32B, 32C, 32D and connected to the smallest cylinder 32D. As the control cable 34 reciprocates, the reacher body 31 is slightly moved forward. While maintaining the tilted posture, it is linearly expanded and contracted between the standby state and the use state.
[0018]
The holding member 36 has a planar shape that matches the opening edge of the opening portion 14 of the shield 13, that is, has a shape elongated in the front-rear direction as a whole, and its front end portion is the upper end portion (projecting end portion) of the smallest cylindrical body 32 </ b> D. It is fixed so as to move together. The outer surface of the holding member 36 is a design surface 37 designed to have the same texture and color as the outer surface of the shield 13. When the leecher main body 31 is in the standby state, the holding member 36 is fitted into the opening 14 of the shield 13, and in this fitted state, the design surface 37 of the holding member 36 is flush with the outer surface of the shield 13. To be continuous. Therefore, as for the entire outer surface of the shield 13, only the portion of the holding member 36 does not cause a sense of incongruity.
[0019]
The holding member 36 is formed with a notch 38 having a recessed side edge on the seat cushion 11 side. The notch 38 penetrates between the upper and lower surfaces of the holding member 36 and is elongated in the front-rear direction as a whole. The front-rear length is larger than the width of the webbing 21. When the leecher 30 is in the standby state, the holding member 36 is fitted into the opening 14 of the shield 13. The opening 14 is opened at the notch 38, and the inside of the shield 13 is connected to the notch 38. The outside communicates with each other, and the webbing 21 passes through the notch 38 and is led out of the shield 13.
[0020]
Further, the holding member 36 is formed with a rod-like sliding contact portion 39 that protrudes substantially horizontally from the rear end portion of the inner surface of the notch portion 38 toward the seat cushion 11 side (the side where the notch portion 38 is opened). . The protruding direction of the sliding contact portion 39 is a direction substantially orthogonal to the longitudinal direction of the notch portion 38 and the extending / contracting direction of the leecher main body 31. When the leecher 30 is in the standby state, the sliding contact portion 39 is located behind the webbing 21 that penetrates the notch 38.
[0021]
Next, the operation of this embodiment will be described.
When the seat belt 20 is not worn, the leecher 30 is in a standby state, the leecher main body 31 contracts to the shortest length and is stored in the accommodating space 16 of the shield 13, and the holding member 36 is the opening 14 of the shield 13. The webbing 21 is led out to the outside of the shield 13 through the notch 38 and is in a state of being tensioned with the shoulder anchor 18 along the outer surface of the seat back 12. At this time, a part of the webbing 21 hits the lower end of the front surface of the seat back 12 in a state of being twisted by about 90 ° at a position slightly above the notch 38 and is twisted in a region from here to the shoulder anchor 18. Returned.
[0022]
When the passenger M is seated on the seat cushion 11, it is detected by a pressure sensor (not shown), the motor 35 is activated based on the detection signal, and the control cable 34 is moved. Stretches. By the extension operation of the leecher main body 31, the holding member 36 linearly moves obliquely upward and forward.
In the process in which the holding member 36 moves, the sliding contact portion 39 comes into contact with the webbing 21 obliquely from the lower rear, and when this contact is started, the webbing 21 has a notch portion with its surface facing outward in the left-right direction. The posture is changed from the posture along the surface 38 (see FIG. 5) to the posture along the sliding contact portion 39 (see FIG. 6) with the surface facing the front side. Thereby, the back surface of the webbing 21 comes into contact with the sliding contact portion 39 in a surface contact state. This contact direction is the same as the direction in which the sliding contact portion 39 pushes the webbing 21, and the back surface of the webbing 21 is substantially perpendicular to this direction. The webbing 21 pushed by the sliding contact portion 39 is pushed up obliquely upward and forward so as to form a triangle between the lower anchor 15 and the shoulder anchor 18 with the contact portion to the sliding contact portion 39 as a vertex. When the reacher main body 31 is in the most extended use state, that is, when the holding member 36 and the webbing 21 are moved to the uppermost and frontmost positions, the extension operation of the motor 35 and the reacher 30 is stopped.
[0023]
Since the webbing 21 pushed up by the sliding contact portion 39 is positioned diagonally forward and sideward of the occupant seated on the seat cushion 11, the occupant can pass the webbing 21 or the webbing 21 without greatly twisting the upper body. It is possible to easily grasp the tongue plate. After that, the webbing 21 may be extended to the front of the upper body while removing the webbing 21 from the notch portion 38 and the sliding contact portion 39, and the tongue plate 22 may be engaged with a buckle (not shown) on the side opposite to the shield 13.
[0024]
When it is detected that the tongue plate 22 is engaged with the buckle, the motor 35 is activated, the reacher body 31 contracts, the holding member 36 moves obliquely downward and rearward, and the reacher body 31 contracts most and waits. When the state returns, the contraction operation of the motor 35 and the reacher 30 stops, the holding member 36 is fitted into the opening 14 of the shield 13, and the reacher 30 is stored inside the shield 13.
As described above, in the present embodiment, the reacher 30 is exposed from the shield 13 only for a short time during which the passenger M performs an operation for wearing the seat belt 20, and the reacher 30 is otherwise shielded. 13 is stored inside. That is, since the leecher 30 is not normally exposed to the outside, the beauty around the seat 10 is not deteriorated due to the provision of the leecher 30.
[0025]
Further, since the design surface 37 of the holding member 36 is substantially flush with the outer surface of the shield 13 when the leecher 30 is in the standby state, the aesthetic appearance of the shield 13 is not impaired by the holding member 36.
Further, when the holding member 36 holds the webbing 21 and moves the webbing 21 forward, the webbing 21 and the holding member 36 are in sliding contact. At this time, the sliding contact portion 39 provided on the holding member 36 is Since the webbing 21 is in sliding contact with the webbing 21 in a surface contact state, the webbing 21 can be smoothly moved without causing the webbing 21 to buckle and fold as if the side edge of the webbing 21 is pushed. Can do.
[0026]
In the process in which the leecher 30 is displaced from the standby state to the use state, the holding member 36 moves linearly, and the leecher main body 31 expands and contracts while maintaining an elongated shape generally along the movement path of the holding member 36. did. As a result, the space required for displacing the holding member 36 and the leecher main body 31 is substantially the same, and the space is a substantially linear and elongated space, so that space saving is realized.
[0027]
In addition, the leecher main body 31 is configured to expand and contract by overlapping a plurality of cylinders 32A, 32B, 32C, and 32D having different diameters in a concentric manner and allowing relative displacement in the length direction. In the stored standby state, the length of the leecher main body 31 is shortened, and the storage space in the shield 13 can be reduced.
Further, the leecher main body 31 (that is, the driving means for moving the holding member 36 of the leecher 30) is disposed adjacent to the feeding end of the webbing 21 and the lower anchor 15 for fixing the feeding end. This means that the leecher main body 31 is arranged by utilizing the space secured for arranging the webbing 21 in the shield 13. Thus, according to this embodiment, effective use of space is realized.
[0028]
In addition, since the elongated control cable 34 is used as means for extending and retracting the leecher main body 31, the wiring space for the control cable 34 can be reduced.
[Other Embodiments]
The present invention is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
[0029]
(1) In the above embodiment, the webbing feeding end is connected to the lower anchor fixed to the seat, but the present invention can also be applied to a structure for fixing the lower anchor to the vehicle body.
(2) In the above embodiment, the holding member is in contact with the webbing from the outside and the rear. However, according to the present invention, the holding member is formed into a slit-like closed through hole, and a seat belt is attached thereto. It is good also as a form which lets it pass.
(3) In the above embodiment, the sliding contact portion is formed in a substantially circular rod shape, and the webbing is slid on the surface of the sliding contact portion. However, according to the present invention, the sliding contact portion is rotatable or cylindrical. A substantially frustoconical cylindrical shape may be used. In this case, only rolling friction is generated between the sliding contact portion and the webbing, so that the frictional resistance is reduced as compared with the case where the webbing slides on the surface of the sliding contact portion.
Note that the substantially truncated cone shape is not limited to a shape in which a line connecting both ends in the rotation axis direction on the outer peripheral surface forms a straight line (so-called frustoconical shape), but both ends in the rotation axis direction are connected on the outer peripheral surface. There is a curve that curves so that the line is dented to the center side (inner side) (a shape in which the outer diameter suddenly increases at one end) or a line that connects both ends in the rotation axis direction on the outer peripheral surface Also included are those that form a curved curve that bulges outward (those whose outer peripheral surface forms a bell shape).
Furthermore, as a means for reducing the frictional resistance between the sliding contact portion and the webbing, a surface treatment may be applied to the surface (outer peripheral surface) of the sliding contact portion.
[0030]
(4) In the above embodiment, the holding member is fixed to the leecher main body. However, according to the present invention, the holding member may be rotated with the tip of the leecher main body as a fulcrum. As an example of the rotation mode, the holding member is rotated between a horizontal posture (a posture that is flush with the upper surface of the shield) and an upright posture (a posture that is substantially parallel to the extending direction of the leecher body). According to this embodiment, the expansion / contraction stroke of the leecher body can be shortened by the dimension of the holding member standing up, and thus the rigidity of the leecher body can be increased and the reacher body can be stored in the shield. Space can be kept small. In addition to this, the holding member may be rotated about an axis parallel to the length direction of the leecher body.
[0031]
(5) In the above embodiment, the case where the extension dimension of the reacher body (the height of the holding member in use) is constant has been described. However, according to the present invention, the extension dimension of the reacher body can be arbitrarily or automatically. It may be adjustable. When adjusting automatically, if the seat is equipped with a memory mechanism (a mechanism that presets the seat height, seat inclination angle, etc.), the extension size of the leecher is also set in the memory mechanism. You can also let them.
[0032]
(6) In the above embodiment, as a means for linearly displacing the holding member provided at the tip of the leecher main body, a plurality of cylinders having different sizes are concentrically stacked, and the cylinder is linearly expanded and contracted. However, according to the present invention, the leecher main body may be moved in the length direction by the fluid pressure piston of the rod that does not expand and contract, or may be displaced like a pantograph.
(7) In the above-described embodiment, the leecher main body expands and contracts in the length direction. However, according to the present invention, the most proximal end cylinder of the leecher main body is supported by the shaft, and the leecher is only expanded and contracted. Alternatively, a rotation (for example, in the front-rear direction) may be performed. In this case, the rotation angle may be adjusted arbitrarily or automatically. When adjusting automatically, if the seat is equipped with a memory mechanism, the extension size of the leecher can also be set in the memory mechanism.
[0033]
(8) In the above embodiment, the leecher body is expanded and contracted to displace the holding member in a straight line. However, according to the present invention, the leecher body is structured not to expand and contract and the front end side surface of the seat has a lateral direction. It is supported by a shaft so that it can rotate, and in a standby state, the leecher body is in a horizontal posture and a holding member provided at the front end of the leecher body is located at the rear end of the seat side surface, and in a used state, the posture is raised obliquely upward. It may be made to become.
[0034]
(9) In the above embodiment, it is detected that the occupant is seated on the seat cushion and the leecher starts displacement from the standby state to the use state. The switch may be manually operated, or the door may be opened or closed based on detection. A manual cutoff device for intentionally stopping the leecher function may be provided.
(10) In the above embodiment, the holding member moves linearly. However, according to the present invention, the holding member may be slid in a curved shape. In this case, each cylindrical body may be curved with the same curvature.
(11) In the above embodiment, the slidable contact portion that contacts the webbing without significantly deforming the webbing is provided. However, according to the present invention, instead of the slidable contact portion, a substantially U-shaped or substantially J-shaped configuration is provided. Alternatively, a concave portion having a substantially V shape may be provided, and the webbing may be slidably contacted along the inner surface of the concave portion while being bent and deformed. In this case, it is preferable that the webbing is detached from the recess when the seat belt is worn.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of a first embodiment. FIG. 2 is a side view showing a leecher standby state. FIG. 3 is a side view showing a leecher use state. FIG. 5 is a partially enlarged plan view showing a standby state of a leecher. FIG. 6 is a partially enlarged plan view showing a use state of a leecher.
DESCRIPTION OF SYMBOLS 11 ... Seat cushion 12 ... Seat back 13 ... Shield 16 ... Storage space 20 ... Seat belt 21 ... Webbing 30 ... Reacher 31 ... Reacher main body 32A-32D ... Tube 34 ... Control cable 36 ... Holding member 37 ... Design surface 39 ... Sliding Junction

Claims (2)

A seat belt leecher device provided with a leecher that moves a webbing of a seat belt that waits substantially along the side surface of the seat back to a position ahead of the seat back in a process of shifting from a standby state to a use state. There,
In the shield provided on the side surface of the seat cushion, an accommodation space is provided that can store the leecher in a standby state ,
The leecher includes a leecher body that changes its form between the standby state and the use state, and a holding member that is supported by the leecher body and holds the webbing.
In the process in which the leecher is displaced between the standby state and the use state, the sliding contact portion that is in sliding contact with the webbing in a surface contact state is in the longitudinal direction of the holding member and the expansion / contraction direction of the leecher body A seat belt leecher device provided in a substantially orthogonal direction . The reacher device for a seat belt according to claim 1, wherein a curved portion that gradually changes in front of the seat is set at a proximal end of the sliding contact portion with the holding member.

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