JP2001213270A - Stopper and stopping method for re-winding seat belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the usability by extremely simplifying the operability and workability. SOLUTION: A housing 1 which can be opened/closed in two sides is constituted with one end side as a supporting point, a first roller 13 and a second roller 61 are provided on one side 3 and the other side 5 of the housing 1, and a webbing 99 is held between the first and second rollers 13 and 61. A ring body 31 which is supported by a slidable receiving portion 33 and prohibited to turn is screwed in a rotary shaft 21 of the first roller 13 to impede the rotation in the re-winding direction of the webbing 99 in the first and second rollers 13 and 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt rewind stopper for stopping the webbing rewind with a certain rewind amount (position) when rewinding a webbing of a seat belt. The present invention relates to a method for stopping rewinding of a belt.

[0002]

2. Description of the Related Art In general, in the case of a passenger or a truck, a seatbelt is located at a lower position (floor side) in a vehicle interior such as a vertical plate portion behind a front door (backside of a wall plate on interior decoration). The webbing is pulled out from the retractor arranged in the vertical plate portion, and the webbing is engaged with the shoulder anchor disposed at a position slightly higher than the shoulder of the human body on the seat of the interior decoration wall in the vertical plate portion, always in preparation for use. I have.

[0003] The retractor has a lock mechanism for stopping the withdrawal of the webbing in an emergency. On the other hand, the retractor also has a function of maintaining the action of constantly rewinding the webbing and tightening the human body with the webbing. .

Since the retractor is provided with a function of constantly rewinding the webbing, it is necessary to compare the webbing when the vehicle twists the upper body and falls forward, for example, for adjusting air conditioning and sound, or opening and closing an ashtray. The webbing's rewinding force always works even when the occupant's upper body is leaning completely on the seat back, so the occupant is required to lean forward. Even without doing, the feeling of pressure tightened by the webbing is always felt.

[0005] At least, if it is possible to completely eliminate the feeling of pressure on the webbing, which works when the upper body does not move, the occupant will be able to obtain lightness and a feeling of openness, which will be very easy, and the wearing rate will be extremely high. It is also thought that it improves.

On the other hand, a stopper for stopping the fastening force of the seat belt is applied, for example, to the back of the seat belt,
There is a commercially available stopper that includes a combination of a back member that protrudes a protrusion forward of the seat belt from the side of the seat belt and a front member that is applied to the front surface of the seat belt and held between the protrusions of the back member. When the back and front members are fixedly attached to the seatbelt and abut against the shoulder anchor, the stop of the seatbelt tightening and rewinding is stopped by the holding force by which the protrusion of the back member holds the front member.

[0007]

However, in the case of the above stopper, each time the occupant gets off, the stopper itself, which is a combination of the front and rear members, is pulled along the seat belt and slidably moved to a position far away from the shoulder anchor. If the work is not performed, the seat belt cannot be returned to the initial state (the state before use), and this is troublesome and troublesome. The belt is always left in an excessively pulled-out state, and it is necessary to be tolerant of troublesome indoor handling such as hanging down from the side of a seat to the road when the door is opened.

When moving the stopper itself every time the vehicle gets in and out of the vehicle without complaining about the trouble of moving the stopper itself, first, when getting off the vehicle, grasp the seat belt near the shoulder anchor with the right hand and use the left hand to stop the stopper. It is necessary to perform a large operation of sliding itself to the vicinity of the left crotch, thereby enabling the seat belt to be rewound. Therefore, even when riding, after setting the seat belt, the seat near the left crotch is required. In addition to the large work required to grasp the belt with the left hand and slide the stopper itself near the shoulder anchor with the right hand every time, especially when riding, set the position of the stopper to an appropriate position. For this reason, it is necessary to carry out a fine adjustment operation with both hands every time to ensure that the seat belt maintains an appropriate margin, that is, whether there is too much margin. Sex and operability is poor, not very functional.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sheet belt rewind stopper and a method for stopping rewinding of a sheet belt, which have good operability (operability) in use and can be finely adjusted very easily. is there.

[0010]

According to a first aspect of the present invention, there is provided a housing which can be opened and closed in two directions with one end serving as a fulcrum, a first roller rotatably supported on one side of the housing for opening and closing, A second roller rotatably supported on the other side of the opening and closing of the housing, and a second roller rotatably screwed to a male screw portion on the outer periphery of the rotation shaft of the first or second roller, and a part corresponding to the housing; A ring body slidably supported by the slide receiving portion on the side to be rotated and prohibited from rotating, and a lock mechanism for locking the closing rotation on both sides of the housing. Sometimes, the first and second rollers sandwich the webbing. In the second invention, a housing to which both one side and the other side can be joined, a first roller rotatably supported on one side of the housing, and a push-pull to the other side of the housing A button portion that is freely supported and has the push-pull lock mechanism on the tip end side, a second roller that is rotatably supported on the button portion side, and a male of the outer periphery of the rotation shaft of the first or second roller A ring body that is screwed to the threaded portion, and part of which is slidably supported by a slide receiving portion on a corresponding side of the housing and whose rotation is prohibited. After the webbing on the side of is joined, the webbing is sandwiched between the first and second rollers by a pressing operation of the button portion.
In the third invention, a female screw-shaped ring body, part of which is slidably supported by a slide receiving portion and whose rotation is prohibited, is provided on a male screw portion on the outer periphery of the rotating shaft which rotates with pulling out and rewinding of the webbing. When the rotating shaft is rotated in the webbing unwinding direction and reaches a predetermined number of rotations, the ring body abuts on one end side stop of the rotating shaft, or a predetermined stop. The rotation of the rotating shaft is stopped and the unwinding of the webbing is stopped by contact with the portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a top view of a transmission part of a seat belt illustrating a schematic configuration of a seat belt rewind stopper according to the first embodiment. Housing 1
Are two sides 3 and 5 each having an open U-shaped cross section.
Are connected to each other so that the open sides 9 and 11 can be opened and closed with the hinge 7 on the outer side of one side as a fulcrum. When closing both sides 3 and 5, if one side 3 is fixed, the other side 5 is rotated in the direction of arrow A.

Inside the one side 3 of the housing 1, a first roller 13 is housed with a part of the outer periphery thereof being slightly exposed to the outside from the open side 9 of the one side 3. The first roller 13 has inner walls 15, which are opposed to each other on one side 3,
The protruding rotary shafts 21 and 23 are rotatably inserted into the shaft hole on the side 17 so that the rotary shaft 21 is rotatable in one side 3. A part is formed. A ring body 31 having a female thread on the outer periphery of the rotating shaft 21 and having a protrusion 25 in the form of a female screw and having a long convex part along the central axis on a part of the outer periphery is rotatably screwed. The projection 25 corresponds to a part of the ring body according to the first aspect.

Inside the one side 3 of the housing 1, there is provided a slide receiving portion 33 having a horizontally long concave shape facing the open side 9, and the concave portion of the slide receiving portion 33 has a ring body 31. Are accommodated so that the projection 25 can slide in the reciprocating direction along the concave portion. In the initial state, the ring body 31 is on one side 3 of the housing 1.
Abuts against a disk-shaped stop 16 around the shaft hole on the side that rotatably supports the rotating shaft 21. The contact of the ring body 31 is caused by the rotation of the first roller 13 in the direction in which the webbing 99 is rewound (the rotation in the counterclockwise direction viewed from the rotation shaft 21) due to the threading of the external thread portion on the outer periphery of the rotation shaft 21. That is, the rotation of the ring body 31 in the direction in which the ring body 31 is pressed against the stop portion 16 is prevented. Conversely, when the first roller 13 rotates in the direction in which the webbing 99 is pulled out, the ring body 31
When it is desired to rotate around the rotation shaft 21 together with the rotation of the rotation shaft 1, the projection 25 hits the concave portion of the slide receiving portion 33 and rotation around the rotation shaft 21 is prevented (prohibited). Along with the rotation of the rotary shaft 21, the rotary shaft 21 slides along the concave portion of the rotary shaft 21 in the direction away from the stop portion 16 (in the direction of arrow B) in the direction of the middle axis of the rotary shaft 21.

Although not shown, one side 3 of the housing 1 is pulled out of the retractor in the case of a private passenger by, for example, a vertical plate portion (wall plate on interior decoration) between the front door and the rear door in the vehicle interior. Webbing 99 at a position where the webbing 99 passes through and below the shoulder anchor.
For example, in the position corresponding to the back (shadow) side of
(It can be screwed, etc.). At this time, the back side of the webbing 99 is brought into contact with the exposed portion of the outer periphery of the first roller 13, or the back side of the webbing 99 is brought into contact with the exposed portion.

On the open side 11 on the upper and lower surfaces of the other side 5 of the housing 1, a webbing accommodating groove 51 having a horizontally long concave shape is formed, and the width of the webbing 99 can be accommodated in the webbing accommodating groove 51. It has become.

Inside the other side 5 of the housing 1, a second roller 61 is accommodated so that a part of the outer periphery thereof can be slightly exposed in the webbing accommodation groove 51. The second roller 61 is provided with shaft holes 65 </ b> A, 67 </ b> A in the shape of horizontally elongated holes on the inner walls 65, 67 facing the left and right sides of the other side 5.
The protruding rotating shafts 69, 69 are rotatably inserted into the other side 5 so as to be rotatable in the other side 5. On the bottom surface side of the other side 5, there is a spring accommodating groove for accommodating a substantially L-shaped or U-shaped leaf spring 71, 71 in cross-section. The leaf spring 71, 71 is a second roller. 61 is pressed in the direction of the webbing accommodating groove 51, thereby causing the second roller 61 to move the webbing accommodating groove 51.
Extruded more outward.

The two sides 3 and 5 of the housing 1 are hinged 7
Is closed at the fulcrum, the outer peripheral surface of the second roller 61 is
The outer peripheral surface of the first roller 13 abuts and the two rollers 61 and 13 can rotate in the opposite directions simultaneously at the same time. The leaf springs 71 and 71 maintain this state.
Is the pressing force.

An outer wall on both sides 3 and 5 of the housing 1 which is also the outermost peripheral surface of the opening and closing rotation,
Is provided with a triangular projection 81 as a lock mechanism for locking the joining of the sides 3 and 5 when the sides 3 and 5 are closed, and the outer wall of the other side 5 is also provided with a lock mechanism as a lock mechanism. A key-like projection 83 having flexibility is provided. When the key-shaped projection 83 is locked to the triangular projection 81, the other side 5 of the housing 1 cannot rotate in a direction away from the one side 3, that is, in an opening direction, but the key-shaped projection 83 Since the key-shaped protrusion 83 is bent and separated from the triangular protrusion 81 because of its flexibility, the other side 5 can be rotated to open around the hinge 7 as a fulcrum.

Next, an outline of the overall operation will be described. While opening both sides 3 and 5 of the housing 1 around the hinge 7 as a fulcrum, one side 3 is attached to, for example, a vertical plate portion in the vehicle interior with a double-sided tape 41, thereby fixing to the vertical plate portion. In this state, the webbing 99 is applied to the outer periphery of the first roller 13. In this state, in order to use the seatbelt, pulling the webbing 99 (not shown) by pulling the webbing 99 out through the webbing 99 and pulling the webbing 99 through an inner buckle (not shown) next to the seat, for example, tightens the human body with the webbing 99. However, here, the webbing 99 is further pulled by a few centimeters (preferably by the user, and may be about 1-3 cm), and while maintaining this state, the other side 5 of the housing 1 is manually turned around the hinge 7 as a fulcrum. Close and lock.

When this state is obtained, the first roller 13 and the second
The webbing 99 is sandwiched between the rollers 61, and in particular, the leaf springs 71, 71 function to strongly press the second roller 61 toward the webbing 99, and the first and second rollers 1 are provided.
The webbing 99 and the webbing 99 can be rotated in opposite directions by the friction force between the webbing 99 and the webbing 99. However, in the initial state this time (when the two sides 3 and 5 are closed and joined), the ring body 31 is in contact with the stop 16 on the one side 3 of the housing 1, so that the first and second rings are provided from the beginning. Roller 1
The rotation of the webbing 99 in the direction of rewinding the webbing 99 is prevented (prohibited) by the frictional force associated with the stopping force of the first roller 13. On the contrary, it will not be rewound.

Therefore, when the seat belt is used, in the initial state when both sides 3 and 5 of the housing 1 are closed, the rewinding of the webbing 99 is stopped (prevented). For webbing 9
If 9 were pulled out, for example, about 1 to 3 cm extra, that margin would be maintained unless both sides 3, 5 of housing 1 were opened.

When the user performs the operation of tilting the upper body forward after obtaining the initial state as described above, the webbing 99 is pulled out according to the operation. In conjunction with frictional force,
The second rollers 13 and 61 rotate in a direction in which the webbing 99 is pulled out. At the same time, the ring body 31 slides along the rotation shaft 21 and the recessed portion of the slide receiving portion 33 in a direction away from the stop portion 16 with the rotation of the rotation shaft 21.

From here, when the user completely returns the upper body to the seat back, the webbing 99 starts to be rewound by the rewinding function of the retractor, and the first and second rollers 13, 61 associated with this rewinding. When the rotation of the rotation shaft 21 in the reverse direction, and thus the rotation of the rotation shaft 21 in the reverse direction, reaches a predetermined rotation speed, that is, a rotation speed equal to the rotation speed when the webbing 99 is pulled out this time, the ring body 31 is rotated. Slidably moves in the reverse direction in the reverse direction to contact the stop portion 16. Here, the first roller 13 is rotated by a strong frictional force and pressing force between the ring body 31 and the stopping portion 16 and a strong frictional force and pressing force between the female screw part of the ring body 31 and the male screw part of the rotating shaft 21. It becomes difficult to continue and stop. As a result, the frictional force between the outer periphery of the first roller 13 and the webbing 99 is significantly increased, and the rewinding of the webbing 99 is stopped (prevented) by the frictional force, and the second roller 61 is also stopped. become.

When the webbing 99 is pulled out and then rewound again, the amount of the webbing 99 pulled out is consequently the same as the initial amount when the both sides 3 and 5 of the housing 1 are closed and locked. Therefore, as long as the user leans on the seat back, the above-mentioned 1-3 cm margin remains in the webbing 99, so that the user can feel light and open from pressure. Becomes

When the webbing 99 is to be finely adjusted in order to obtain a margin of, for example, 3 cm of the webbing 99 with respect to the human body during use, if the webbing 99 is to be finely adjusted, the other side 5 of the stopper is once opened to thereby allow the webbing 99 to be released. ,
Press the inside of the webbing 99 with, for example, the right hand to
It is sufficient to provide a margin of m and close the other side 5 with the left hand, for example, in a proper state, and a simple one-touch operation is sufficient.

It should be noted that the ring body 31 may have any configuration even if the rotary shaft 69 on the second roller 61 side is formed into a male screw and screwed thereto. In addition, in the ring body 31,
A recess may be employed instead of the projection 25, and a projection may be provided on the slide receiving portion 33 side.

Further, in the present embodiment, the first and second
It is also advantageous to provide a strong frictional resistance to the pinching force of the webbing 99 by forming, for example, a fine gear-shaped portion on the outer circumference of the rollers 13 and 61, or by attaching a notched rubber ring. is there.

Next, a seat belt rewind stopper according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a cross-sectional view taken along the line XX of FIG.
Is a cross-sectional view of a main part of the main body in the horizontal direction when viewed from above,
FIG. 3 shows a sectional view along the line. Here, for convenience of explanation,
The overall schematic configuration will be described with reference to both figures simultaneously.

The housing 100 has one side 111 and the other side 211 which are formed to have a substantially U-shape in cross-section with an open inner side surface (this is provided with the button portion 300 and has a substantially U-shape in cross-section). The joint holes (not shown) on both sides of one side 111 and the joint projections 217, 2 on both sides of the other side 211, with their open sides 115, 215 facing inward from each other.
17 so that they can be separated from each other.

On the left and right side walls of the one side 111, accommodation recesses 123, 123 for accommodating the locking plate spring 121 are formed at positions inside the joining holes. The spring 121 has a triangular protrusion 127 protruding inward at the tip of the flexible plate 125. Others
Details will be described later.

On one side 111, the receiving recesses 123, 12
3 are provided on the side walls 131, 131.
There is a shaft hole on the outside toward the center of the one side 111, and the outer rotation shafts 151 and 151 of the first rollers 141 and 141 are rotatably inserted into the shaft hole. Inside the first rollers 141 and 141
Is accommodated in such a manner that a part of the outer periphery is slightly exposed to the outside from the open side 115. Inside the first rollers 141, 141, there are disc-shaped stop portions 152, 1 described later in detail.
53, between the stops 152 and 153, an inner rotating shaft 161 for integrally connecting the first rollers 141 and 141.
(Corresponding to a rotating shaft according to claim 2) which enables simultaneous rotation in the same direction of both 141 and 141. A male screw portion is formed on the outer periphery of the inner rotation shaft 161, for example, over the entire circumference. The male screw portion has a female screw shape on the inner side and is formed along a central axis on a part of the outer circumference. A ring body 173 having the formed projection 171 is screwed. The projection 171 corresponds to a part of the ring body according to the second aspect.

On one side 111, inside the longitudinal side wall:
Recesses 181 and 181 avoiding first rollers 141 and 141
Is formed between the recesses 181 and 181, and a slide receiving portion 191 having a horizontally long recessed shape with the sliding receiving surface facing the open side 115 is formed, and the protrusion 171 of the ring body 173 is formed.
Are slidably accommodated. The sliding movement of the ring body 173 along the slide receiving portion 191 is caused by the rotation of the inner rotating shaft 16.
The rotation of the first roller 14 is substantially the same as that of the first embodiment, and needless to be described in detail.
When the inner rotary shaft 161 rotates in the direction in which the webbing 99 is pulled out together with 1 and 141, the inner rotary shaft 161 slides in the direction away from the disk-shaped stop portion 152 (the direction of arrow B). When the inner rotation shaft 161 rotates in the opposite direction from that state, the ring body 1 is cut due to the threading of the external thread portion.
73 slides in the direction approaching the stop 152, and when it comes into contact with the stop 151, the sliding movement is forcibly stopped, and the rotation of the inner rotary shaft 161 is stopped by the frictional force and the pressing force. The rotation of the first rollers 141 and 141 is stopped.

By the way, the above-mentioned locking leaf springs 121, 1
21 is a vertical lower projection 129 which is a pull-out preventing means for maintaining a pressing state of a later-described second roller 351 against the first rollers 141 and 141 once the housing 21 is housed in the housing recesses 123 and 123. In general, it cannot be pulled out to the open side 115. In the case of FIG. 2, the bending plate 125 of the locking leaf springs 121 is inclined so as to rise obliquely upward to the right as shown in FIG. It has an inclined portion 125A, and has a triangular protrusion 127 protruding inward at the tip of a horizontal portion 125B extending horizontally from the inclined portion 125A.

On the other side 211 of the housing 100, inside the left and right side walls, slide receiving through-holes 221 and 221 for slidably receiving push-pull sliding parts 311 and 311 on the inside and left of the button part 300 are provided. Is formed. Button part 3
The triangular projections 313 and 313 projecting toward the upper surfaces of the slide receiving through-holes 221 and 221 are formed on the top surfaces of the distal ends of the push-pull sliding portions 311 and 311.
13 and 313 are locking leaf springs 1 on one side 111.
When the button portion 300 is engaged with the triangular protrusions 127, 127, the button portion 300 is prevented from being pulled back from the engaged position.

The push / pull sliding part 311 of the button part 300,
An insertion opening is provided on the distal end side of the shaft 311. Inside the insertion opening, a shaft housing 321 having a diameter larger than that of the insertion opening is provided.
321 are formed. The shafts 333 and 333 of the leaf spring pressing portions 331 and 331 are housed in the shaft housing portions 321 and 321 so as to be reciprocally movable. At the ends of the shafts 333 and 333, annular protrusions 335 and 335 are provided. Thus, this is a body that is locked inside the insertion opening to a step wall which is a step between the large diameter portions of the shaft housing portions 321 and 321. Further, coil springs 345 and 345 are interposed between the shafts 333 and 333 of the leaf spring pressing portions 331 and 331 at positions between the leaf spring pressing portions 331 and 331 and the insertion openings. , 333 are mostly provided in the shaft receiving portions 321, 3
The annular projections 335 and 335 protrude from the outside 21 and are locked to the step walls on the insertion opening side.

The leaf spring pressing portions 331 and 331 are provided in the housing recess 12 on one side 111 of the housing 100.
3, 123, are inserted immediately below the flexible plates 125, 125 of the locking leaf springs 121, 121, and
The body is made to be slidable on the fixing plates 126 of the first member 121.

On the upper surface side of the leaf spring pressing portions 331, 331, there are formed inclined surfaces 337, 337 which are inclined downward in the drawing as a part thereof goes to the front end side. In the case of sliding movement in the direction, the inclined surfaces 337, 337 press the back sides of the inclined portions 125A, 125A of the locking leaf springs 121, 121, and the locking leaf springs 12
1 and 121 can be bent upward in the figure. When the flexible plates 125, 125 are bent upward in the figure, the triangular projections 1 of the flexible plates 125, 125
27, 127 and push / pull sliding portion 31 of button portion 300
It is possible to release the engagement relationship between the first and third triangular projections 313 and 313, and it is possible to pull back the button part 300.

The push / pull sliding portions 311 and 311 perform the first-stage sliding movement, and the triangular protrusions 313 and 313 engage with the triangular protrusions 127 and 127 of the locking leaf springs 121 and 121. In this case, the inclined surfaces 337, 337 of the leaf spring pressing portions 331, 331 are in a state where they are slightly in contact with the back side of the inclined portions 125A, 125A of the locking leaf springs 121, 121 or in a state position just before the contact. Flexible plates 125, 12
5 is not bent upward in the figure. Push-pull sliding part 3
11 and 311 further perform the second-stage sliding movement, and the inclined surfaces 337 and 337 of the leaf spring pressing portions 331 and 331 press the back side of the inclined portion 125A, whereby the flexible plate 125 and
125 is bent upward in the figure, and each of the triangular protrusions 313 and 127 is bent.
Are released, the push-pull sliding portions 311 and 3
When the sliding movement force to the arrow A side of 11 disappears, the push-pull sliding portions 311, 311 are moved while the bending plates 125, 125 are kept in the upwardly bent state by the pressing force of the coil springs 345, 345. The sliding movement is performed by the coil springs 345 and 345 to be pulled back.

Thereafter, when the button portion 300 returns to the original position, the locking leaf springs 121 return to the original position by the restoring force, and the surfaces of the leaf spring pressing portions 331 and 331 on the retraction side are bent. Triangular protrusion 127,1 of plate 125,125
27 are engaged, firstly, the leaf spring pressing portions 331 and 331 are prevented from being pulled out, and further, the leaf spring pressing portions 33
Annular projections 33 on shafts 333, 333 at 1, 331
The engagement of the 5,335 with the step wall on the insertion opening side also prevents the push-pull sliding portions 311, 311 from being pulled out.

On the open side 215 on the upper and lower surfaces of the other side 211 of the housing 100, a webbing receiving groove 251 having a horizontally long concave shape is formed.
1 can accommodate the width of the webbing 99.

On the other hand, the push / pull sliding portion 3 of the button portion 300
A shaft hole is provided inside the first and third rollers 311 and 311.
Outer rotating shafts 361 and 361 protruding from the outer shaft 1 351 are rotatably inserted. Also, the second rollers 351, 35
The inner rollers 351 are also arranged inside the first rollers 351, and the second rollers 351 and 351 are connected to
1,361,371, the push-pull sliding parts 311, 3
In the other side 211 of the housing 100 between the portions 11, the housing 100 is simultaneously rotatable in the same direction.

Both sides 11 of the housing 100
In a case where the webbing 99 and the webbing 99 are housed in the webbing housing part 251, when the first and second rollers 141 and 351 are joined to each other, the outer peripheral portions of the first and second rollers 141 and 351 can come into contact with each other. From the first and second rollers 14
1, 351 may have a body that presses and holds the webbing 99.

That is, the push / pull sliding part 3 of the button part 300
11 and 311 are slid in the direction of arrow A, so that the second rollers 351 and 351 are pushed and pulled by the sliding portion 31.
When it is pushed by the outer rotating shafts 361 and 361 through the shaft holes 1 and 311 and moves in the direction of arrow A, the second roller 35
1, 351 can be pressed against the first rollers 141, 141 with the webbing 99 interposed therebetween, whereby the webbing 99 is strongly held. However,
The required amount of movement of the push-pull slides 311 and 311 here corresponds to the movement distance from the start of the slide movement of the push-pull slides 311 and 311 to the engagement of the triangular projections 127 and 313.

On the bottom surface side of the other side 211, there are spring receiving parts 271, 271 and a leaf spring 28 having a substantially L-shaped cross section.
1 and 281 are accommodated therein, and the inside of the distal ends of the leaf springs 281 and 281 presses the inner rotation shaft 371 of the second rollers 351 and 351 in the direction opposite to the arrow A direction. The pressing force of the leaf springs 281 and 281 is
Is set to be smaller than the pressing force of
Reference numeral 81 is necessary for pulling the push / pull sliding portions 311 and 311 back when the engagement of the triangular protrusions 127 and 313 is released, and for pulling back the leaf spring pressing portions 331 and 331.

The push-pull lock mechanism according to the second aspect of the present invention includes the above-described locking plate spring 121 and the push-pull sliding portion 31.
One of the triangular protrusions 313, the shaft housing 321, the leaf spring pressing part 331, and the coil spring 345.

Next, an outline of the operation of the present embodiment will be described. When the button section 300 is pushed by a manual operation, the push-pull sliding section 31 of the button section 300 is felt while a slight pressing resistance is first felt by the leaf springs 281 and 281.
1, 311 slides in the forward arrow A direction together with the second rollers 351 and 351. Subsequently, the push-pull sliding portion 31
After the inclined surfaces of the triangular projections 313 and 313 of the reference numerals 1 and 311 press the inclined surfaces of the triangular projections 127 and 127 of the locking leaf springs 121 and 121, when the respective triangular projections 313 and 127 are engaged, a so-called "trigger" is formed. I feel the engagement feeling of click,
The fact that the stopper completely meets the purpose of preventing the webbing 99 from rewinding is transmitted to the user by sound and feel.

When the triangular projections 313 and 127 are engaged by the first-stage pressing operation of the button portion 300, the engagement absorbs the pressing force of the leaf springs 281 and 281 while absorbing the pressing force.
First rollers 141 and 141 and second rollers 351 and 351
As a result, the state in which the webbing 99 is strongly held is maintained.

In this state, since the ring body 173 is in the initial state in contact with the disc-shaped stopper 152, the webbing 99 is not rewound from here, and is pulled out from that position and pulled out. Ring body 1
It is only possible to rewind until 73 comes into contact with stop 152.

From the appropriate state, for example, in order for the user to leave the sheet, the second pressing of the button section 300 is performed.
When the inclined surfaces 337, 337 of the leaf spring pressing portions 331, 331 press the rear sides of the inclined portions 125A, 125A of the locking leaf springs 121, 121 by the stepwise pushing operation, the coil springs 345, 345 contract. Due to the opposing pressing force and the returning reaction force of the locking leaf springs 121, a pressing resistance larger than that in the first-stage pressing operation is felt. Thus, each of the triangular protrusions 3 is bent in the direction in which the locking leaf springs 121, 121 open.
When the engagement between the buttons 13 and 127 is released, the button 30
When the pushing force of 0 is released, the coil spring 34
The repulsive pressing force of 5,345 is retained by the locking leaf springs 121,121.
The leaf springs 281 and 281 are kept
The button part 300 is pulled back with the reaction force of
The reaction force of the leaf springs 281 and 281 is
Pull back 31.

When the second roller 351 and 351 are separated from the webbing 99 by the button portion 300 being pulled back, the webbing 99 is released from the pinching force and starts to be pulled back together with the pulling force of the retractor (not shown). At the same time, when the leaf spring pressing portions 331, 331 are separated from the flexible plates 125, 125 of the locking leaf springs 121, 121, the flexible plates 125, 125 return to the original positions and the flexible plates 125, 1 are returned.
Twenty-five triangular protrusions 127, 127 are leaf spring pressing portions 331,
The return position of 331 is defined and stopped, and with this stop, the return of the button unit 300 is also stopped.

When fine adjustment of the webbing 99 withdrawal is performed to obtain a margin of, for example, 3 cm of the webbing 99 with respect to the human body at the time of use, the button portion 300 of the stopper may be used.
Once, for example, once with the left hand, passed the first stage
After the webbing 99 is released by performing a pushing operation in stages, the inside of the webbing 99 is pushed out with, for example, the right hand to give a margin of, for example, 3 cm. , And a simple one-touch operation by simply pressing the button unit 300 with a finger is sufficient.

In practice, when getting off the vehicle, the webbing 99 becomes free by pressing the button portion 300 with a finger,
The webbing 99 returns to the initial position before use according to the retracting force of the retractor. On the other hand, when getting on the vehicle, after pulling the webbing 99 and inserting the slutung of the webbing 99 into the inner buckle next to the seat, for example, pushing the back of the webbing 99 outward with the left hand to give a margin of, for example, 3 cm, If you press the button part 300 with your right hand,
The setting of the seat belt to the human body is completed very easily.

As described above, in the present embodiment, the button unit 300
Is provided, the operability is good, and it is not necessary to open the other side 211 of the housing 100 when not in use. From this viewpoint, there is an advantage that the aesthetic appearance in the room is improved.

In this embodiment, the ring 1
The rotation shaft for screwing the outer rotation shaft 73 is the inner rotation shaft 161 of the first rollers 141, 141.
1 may be adapted to this if it is made longer.
The inner rotation shaft 371 to the outer rotation shaft 361 of the rollers 351 and 351 may be formed into a male screw shape and applied to this. Also, the ring body 173 may employ a concave portion instead of the projection 171 to form a projection on the slide receiving portion 191 side.

In the present embodiment, the first and second
It is also advantageous to provide a strong frictional resistance to the pinching force of the webbing 99, for example, by forming a fine gear-shaped portion on the outer circumference of the rollers 141 and 351 or by attaching a notched rubber ring. is there.

Next, a description will be given of a seat belt rewind stop method according to a third embodiment of the present invention. This embodiment can be applied to, for example, a retractor. That is, for example, a male screw portion is formed on the outer periphery of a take-up shaft in a take-up reel, a female screw-shaped ring body is screwed onto the male screw portion, and a projection on the outer periphery of the ring body is taken up by the take-up reel. Slidable along a slide receiving portion disposed around the winding shaft in the inside. A stop portion for the ring member is provided at one end of the slide receiving portion to regulate the return of the sliding movement of the ring member.

However, the male screw portion is formed as a so-called female screw portion on the inner peripheral side of the take-up reel in addition to the take-up shaft, and the sliding receiving portion of the ring body is wound inside the take-up reel. It is also conceivable to arrange the shaft in a non-rotating manner and use this. The stop of the ring body may be provided at one end of the take-up shaft, or may be provided as another member, for example, at the retractor base or take-up reel.

When the present method is applied to a take-up reel,
Using a link mechanism, a wire and spring mechanism, etc., retract the stop from the take-up shaft or take-up reel,
Thus, it is desirable to have a mode in which the webbing can be completely rewound freely. Of course, if the locking portion is retracted, the ring body becomes free, and the webbing when not in use can be rewound until there is no play. Further, the position at which the webbing is prevented from rewinding can be freely selected according to the user's preference.

On the other hand, the ring body is provided with a rotation shaft outside the take-up reel, which is rotated around the outer periphery of the take-up reel or interlocked with the rotation of the take-up shaft. The so-called external technical concept of the take-up reel may be adopted, in which the slide receiving portion is also arranged outside the take-up reel. In this case, the structure of the mechanism for retracting the stop portion and making the webbing free is easy, and the degree of freedom in design is widened.

The mechanism for retracting the stop portion includes a structure in which a wire is pulled out from a slide-type operation member arranged in a vertical plate portion, for example, behind a front door, in a vehicle interior, and connected to the stop portion via a spring. Conceivable. In this case, it is good to arrange a pulley at least in the vicinity of the operation element and the stop, but when the operation element is operated to pull the wire, the stop rotates about one point and retreats in the direction away from the ring body. . For example, if the operating element is provided with a lock mechanism or the like for fixing and maintaining the operation, it is possible to maintain the retraction of the stop portion and maintain the free state of the webbing. Of course, an electric motor may be used for pulling a wire or operating a link or the like for rotating a stop.

[0061]

According to the present invention, if the one-touch opening / closing operation or the finger pressing operation is performed while the interior decoration wall is kept attached to, for example, near the shoulder anchor, the seat belt stop position can be freely set. The positioning operation of the seatbelt at the time of use and the operation of rewinding the seatbelt after use after use can be extremely easily performed, and the operability and workability are good.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view (a cross-section taken along line XX in FIG. 3) of a main part illustrating a second embodiment of the present invention.

FIG. 3 is a cross-sectional view (a cross-section taken along line YY in FIG. 2) of a main part illustrating a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Housing 3 One side 5 The other side 7 Hinge 9,11 Open side 13 First roller 15,17 Inner wall 16 Stop part 21,23 Rotation shaft 25 Projection 31 Ring body 33 Slide receiving part 41 Double-sided tape 51 Webbing accommodation groove 61 second roller 65, 67 inner wall 65A, 67A shaft hole 69 rotating shaft 71 leaf spring 81 triangular projection 83 key projection 99 webbing 100 housing 111 one side 115 open side 121 locking plate spring 123 receiving recess 125 flexible plate 126 fixing plate 125A Inclined part 125B Horizontal part 127 Triangular protrusion 129 Vertical downward protrusion 141 First roller 151 Outer rotation shaft 151 Outer rotation shaft 152, 153 Stopper 161 Inner rotation shaft 171 Projection 173 Ring body 181 Depression 191 Sliding receiver 211 The other side 221 Sliding receiving through hole 251 c Bing accommodation groove 271 Spring accommodation part 281 Leaf spring 300 Button part 311 Push / pull sliding part 313 Triangular projection 321 Shaft accommodation part 331 Leaf spring pressing part 333 Axis 335 Annular projection 337 Inclined surface 345 Coil spring 351 Second roller 361 Outside rotation axis 371 Inner rotation axis

Claims (3)

[Claims] 1. A housing openable and closable in two with one end as a fulcrum, and a first rotatably supported by one side of the housing.
A roller, and a second rotatably supported on the other side of the housing.
A roller, which is screwed into a male screw portion on the outer periphery of the rotation shaft of the first or second roller, and a part of which is slidably supported by a slide receiving portion on a corresponding side of the housing and rotates. And a lock mechanism for locking the closing rotation of both sides of the housing, wherein the first and second rollers hold the webbing when the housing is closed. A seat belt rewind stopper. 2. A housing to which both one side and the other side can be joined, and a first rotatably supported by one side of the housing.
A roller, and supported by the other side of the housing to be able to be pushed and pulled freely,
A button portion having the push-pull lock mechanism on the tip end side, a second roller rotatably supported on the button portion side, and screwed into a male screw portion on the outer periphery of a rotating shaft of the first or second roller A ring body part of which is slidably supported by a slide receiving portion on a corresponding side of the housing and whose rotation is prohibited, and the webbings on both sides of the housing. After joining, the first,
And a rewind wristper for a seat belt, wherein the webbing is nipped by a second roller. 3. A female screw-shaped ring body, part of which is slidably supported by a slide receiving portion and whose rotation is inhibited, is mounted on a male screw portion on the outer periphery of the rotating shaft which rotates as the webbing is pulled out and rewound. When the rotation shaft reaches a predetermined number of rotations by rotation in the webbing rewind direction, abutment of the ring body on one end side stop portion of the rotation shaft, or A method of stopping rewinding of a seat belt, comprising: stopping rotation of the rotating shaft and stopping rewinding of the webbing upon contact with a stop portion.