JP2007145229A - Seat belt fastening device of child's seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fix a child's seat on a seat and to firmly fasten a seat belt even in installing the child's seat forward or backward against the seat. <P>SOLUTION: Belt insertion holes 54 are formed on both side wall parts 53 of a back part 5 of the child's seat 1. Belt fastening devices 10 are installed on upper parts of the respective belt insertion holes 54 and the seat belt B is inserted through them. The belt fastening device 10 has a rocking lever body 15 furnished with a pair of rocking levers 17 and lever locking parts 19 free to connect a pair of the rocking levers 17 and is constituted free to fasten the seat belt B by a holding part 18 of the rocking lever body 15. The rocking lever body 15 fastening the seat belt B with the holding part 18 is rocked by tensile force of the seat belt B by connecting a pair of the rocking levers 17 by the lever locking parts 19. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a child seat belt belt holding apparatus, and more particularly to a child seat belt belt holding apparatus that can be used even when a child seat is mounted forward or rearward.

  The seat belt holding device for a child seat holds the seat belt in a state where the seat belt is locked to the buckle of the vehicle so that the seat belt does not loosen even if the child seat is fixed to the seat with the seat belt. Has been installed for.

  A conventional seat belt holding device is known from US Pat. According to this, in Patent Document 1, as shown in FIG. 11, the belt holding device 30 includes a belt path 31 through which the seat belt B is inserted and a belt path from one side through which the seat belt B is inserted through the belt path 31. And a rotation lever 32 that is rotatable toward the end surface 31a. The seat belt B is configured to be able to be pressed by rotating the rotation lever 32 with respect to the seat belt B inserted through the belt passage 31. Therefore, since the seat belt B is held in a state where the child seat is fixed to the seat, the seat belt B is prevented from being loosened.

Moreover, in this patent document 1, it can use suitably especially when carrying on the young person who cannot take a sitting posture. The child seat is disposed rearward with respect to the vehicle seat.
JP 2001-347860 A (refer to pages 3 to 5 and FIG. 4)

  However, in Patent Document 1, since the rotation lever 32 is rotated in one direction to hold the seat belt B, the holding force that holds the seat belt B when a force is applied in the opposite direction. There was a possibility that it would fall and loosen. For this reason, it has been a factor that reduces safety.

  However, in recent years, a child seat has been proposed that can be inserted into the seat belt insertion hole without mistakes when the seat belt is worn even when the child seat is disposed both forward and backward ( JP, 2001-301500, A). That is, in this publication, curved seat belt insertion holes are formed from the back to the seat on both sides of the child seat body. In each seat belt insertion hole, a belt guide portion for inserting and guiding the shoulder belt and a belt guide portion for inserting and guiding the waist belt are formed. As a result, even if the child seat is arranged forward or rearward, it can be safely used without making a mistake in the insertion position of the seat belt.

  Therefore, when the seat belt is locked to the child seat, the child seat is described in Japanese Patent Laid-Open No. 2001-301500 so that the seat belt is fixed so as not to be loosened and the child seat can be used forward or backward. It has been desired to mount the seat belt holding device by using the above.

  The present invention solves the above-described problems, and with a simple configuration, the seat belt that has been sandwiched is sufficiently held without loosening, and the child seat is mounted to the seat in a rear-facing manner. It is an object of the present invention to provide a child seat belt holding device that can be used safely even if it is used.

The seat belt holding device for a child seat according to the present invention is configured as follows. That is,
According to the first aspect of the present invention, there is provided a case body mounted on the main body of the child seat, and a swing lever body disposed in the case body, and a seat belt is inserted into the case body. A slit and a stopper for regulating the swing of the swing lever body in both directions are formed,
The swing lever body has a clamping portion capable of clamping both surfaces of a vehicle seat belt;
The holding portion is in a position in the same direction as the slit of the case body in a natural state, and after the seat belt is held by the holding portion, the swing lever body is either of the stoppers by the tension of the seat belt. It is characterized in that it can be swung to the position of.

  According to a second aspect of the present invention, the swing lever body is swingably supported on the same pivot pin, and a pair of levers for sandwiching a vehicle seat belt, and the pair of seats for sandwiching the seat belt. And a coupling means for integrally coupling the lever.

  The invention according to claim 3 is characterized in that the case body is attached to a main body portion of the child seat so that the position of the slit overlaps with a seat belt insertion hole formed in the child seat.

  According to a fourth aspect of the present invention, the seat belt insertion hole is formed on both sides of the main body portion of the child seat and is formed in a curved shape from the upper portion to the lower portion of the main body portion.

  According to the present invention, when the seat belt of the vehicle is inserted into the holding portion of the swing lever body, the seat belt can be inserted into the holding portion of the swing lever body at the same position as the slit position of the case body. The swing lever body that sandwiches the head swings toward one stopper formed on the case body by the tension of the seat belt. At this time, the swinging lever body presses the swinging lever body itself against the stopper while the seatbelt is held between the swinging lever bodies, so that the seatbelt is held firmly even if the vehicle collides. Can and will not loosen.

  Further, since the swing lever body is integrally formed by the coupling means while the seat belt is sandwiched between the pair of levers, the tension of the seat belt presses the swing lever body itself against the case body. . This means that even if the vehicle collides, the coupling means does not release the coupling, and the seat belt can be held.

  Further, even if the child seat is disposed forward or backward, the seat belt holding device attached to the child seat main body has a swinging swing lever body that hits one of a pair of stoppers formed on the case body. Since it only touches and presses, it can be used as it is.

  Next, a child seat seat belt holding device (hereinafter referred to as a belt holding device) according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the child seat 1 includes a base portion 3 and a main body portion 5 disposed on the upper portion of the base portion 3. The main body 5 includes a seat 51, a back 52, and both side walls 53, 53 protruding rearward from the back 52, and belt insertion holes 54, 54 are formed in the both side walls 53, 53, respectively. Each belt insertion hole 54 is formed in a curved shape from the back 52 side to the seat 51 side of the side wall 53 in order to insert the seat belt B of the vehicle, and the shoulder belt B1 is formed at the upper part in the belt insertion hole 54. A first belt guide portion 541 for guiding and a second belt guide portion 542 for guiding the waist belt B <b> 2 are formed below the belt insertion hole 54. One belt insertion hole 54 is equipped with a belt holding device 10 that holds the seat belt B with the child seat 1 fixed to the seat.

  As shown in FIGS. 3 to 4, the belt holding device 10 includes a case body 11 and a swing lever body 15 built in the case body 11. The case body 11 is formed of a resin material and includes a hollow portion 12 with respect to the thickness direction, and a slit 13 extending from below is formed in the front center portion. A swing lever body 15 is swingably disposed in the hollow portion 12. Further, the case body 11 is provided with stopper surfaces 14 and 14 at positions facing the side surface on the swing direction side of the swing lever body 15 to restrict the swing of the swing lever body 15.

  As shown in FIG. 5, the swing lever body 15 includes a support pin 16 supported by the case body 11, a pair of levers 17 and 17 pivotally supported by the support pin 16, and a pair of levers 17 and 17. And a lever lock portion 19 that is integrally coupled with the seat belt B being sandwiched. The pair of levers 17 and 17 are disposed so as to be rotatable about the support pin 16, and opposing surfaces are formed as clamping surfaces 171 and 171 for clamping the seat belt B, respectively. These clamping surfaces 171 and 171 constitute a clamping part 18.

  The lever lock portion 19 includes a claw portion 191 that extends from the tip portion of one swing lever 17 and a lock that is rotatably disposed at the tip portion of the other swing lever 17 and that can be engaged with the claw portion 191. And an arm 192. The claw portion 191 has a stepped portion 191 a that engages the lock arm 192 when engaged with the lock arm 192.

  On the other hand, the lock arm 192 is formed with an engagement hole 192a that engages with the claw portion 191. Further, an engagement portion 192b that engages with the engagement surface 191a of the claw portion 191 is formed on one surface of the engagement hole 192. It is formed in a sticky shape. Then, as shown in FIG. 6, the rocking lever body 15 is obtained by engaging the engagement hole 192 a of the lock arm 192 with the claw portion 191 with the pair of rocking levers 17, 17 holding the seat belt B therebetween. Are coupled together and oscillated in one direction by the tension of the seat belt B.

  Next, the operation of the belt holding apparatus 1 configured as described above will be described.

  First, when the child seat 1 is mounted forward with respect to the vehicle seat, the seat belt B is fitted with the slit 13 of the case body 11, the pair of swing levers 17 of the swing lever body 15, as shown in FIGS. 17, after passing through the belt insertion hole 54 of the child seat 1, the tongue is engaged with the buckle disposed on the opposite side of the child seat 1. Thereby, the child seat 1 is fixed to the seat.

  When it is confirmed that the seat belt B has passed between the pair of swing levers 17, 17, the swing levers 17, 17 are brought close to each other so that the seat belt B is sandwiched between the gripping surfaces 171, 171 (the sandwiching portion 18). Hold with. Thereafter, the lock arm 192 disposed at the tip of one swing lever 17 is swung toward the claw portion extending from the tip of the other swing lever 17 around the support pin 16. Then, the claw portion 191 is inserted into the engagement hole 192a of the lock arm 19 to be engaged. At this time, the locking arm 192 is firmly coupled to the claw portion 191 by the locking portion 192b of the engagement hole 192a engaging with the locking portion 191a of the claw portion 191.

  Accordingly, the swing lever body 15 is integrally coupled in a state where the seat belt B is sandwiched by the sandwiching portions 18 of the pair of swing levers 17 and 17.

  The swing lever body 15 holding the seat belt B swings toward the rear side of the child seat 1 by the tension of the seat belt B, and the rear swing lever 17 (B) is the rear stopper surface 14 ( The swinging is stopped in the state of contact with B). There is a gap between the front swing lever 17 (F) and the front stopper surface 14 (F).

  In this state, the back portion 52 of the main body portion 5 of the child seat 1 is pressed against the back side of the seat by the tension of the seat belt B, and the seat belt B is held by the belt holding device 1, so that the looseness does not occur. Absent. Even when the vehicle collides, the seat belt B is held by the sudden stop of the vehicle. Therefore, the child seat 1 remains fixed to the seat, and the seat belt B is held between the swing lever bodies. 15 will maintain a fixed state.

  Further, when the child seat 1 is mounted rearward with respect to the vehicle seat, as shown in FIGS. 9 to 10, the seat belt B is attached to the pair of slits 13 and swing lever bodies 15 of the case body 11 as described above. After passing through the belt insertion hole 54 of the child seat 1 between the swing levers 17, 17, the seat belt B is clamped and clamped by the clamping surfaces 171, 171 (the clamping unit 18) of the belt clamping device 10. When the lock arm 192 is engaged with the claw 191, the swing lever body 15 is integrally coupled and swings in the direction opposite to the above by the tension of the seat belt B. The swing lever body 15 stops swinging when the front swing lever 17 (F) abuts against the front stopper surface 14 (F). There is a gap between the rear swing lever 17 (B) and the rear stopper surface 14 (B).

  In this case, the front end side of the seat portion 51 of the main body portion 5 of the child seat 1 is pressed and fixed to the back side of the seat by the tension of the seat belt B. The seat belt B is held by the belt holding device 10.

  As described above, even if the child seat 1 of the embodiment is mounted forward or backward on the seat portion of the vehicle, the seat belt B passes through the belt insertion hole 54 formed in the main body portion 5 of the child seat 1 and the child seat. Secure 1 to the seat. At the same time, since the seat belt B is held by the belt holding device 10 attached to the main body 5 of the child seat 1, the seat belt B can fix the child seat 1 to the seat without loosening.

  At this time, the belt holding device 10 sandwiches the seat belt B with the sandwiching portions 18 of the pair of swing levers 17 and 17 and integrally couples the swing lever body 15 with the lever lock portion 19. Even if a large impact acts in the direction away from the vehicle seat, the child seat 1 is fixedly held on the seat by the holding function of the seat belt B, and the fully-coupled swing lever body 15 is provided with the seat belt. Do not loosen B.

  It should be noted that the child seat seat belt holding device of the present invention is not limited to the above-described embodiment. For example, the belt holding device 10 configured to hold the seat belt B between the pair of swing levers 17 and 17 is effective for use in a type in which the child seat can be mounted forward or backward with respect to the seat. Of course, it is possible to attach to a child seat or a rear-facing type child seat. Further, the structure of the swing lever body may be another well-known structure as long as it has a structure that can maintain the state in which the seat belt is clamped and the clamping unit that clamps the seat belt.

It is a perspective view which shows the child seat with which the belt holding apparatus of this invention was mounted | worn. It is the same side view. It is a perspective view which shows one form of the belt holding apparatus in FIG. It is the perspective view which looked at the bell and holding device in FIG. 3 from the bottom face. It is a perspective view which shows the rocking lever body in FIG. It is a perspective view which shows the lever lock part of the rocking lever body in FIG. It is a side view which shows the state which mounted | wore the child seat forward with respect to the seat. It is sectional drawing which shows the clamping state of the seatbelt in FIG. It is a side view which shows the state which mounted | wore rearward with respect to the seat. FIG. 10 is a cross-sectional view showing a state in which the seat belt is clamped in FIG. 9. It is sectional drawing which shows the conventional belt holding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, Child seat 5, Body part 54, Belt insertion hole 10, Belt holding device 11, Case body 13, Slit 14, Stopper surface 15, Swing lever body 16, Support pin 17, Swing lever 171, Nipping surface 18, Nipping Part 19, lever lock part 191, claw part 191a, locking part 192, lock arm 192a, engagement hole 191b, locking part B, seat belt

Claims (4)

A case body mounted on the main body of the child seat, and a swing lever body disposed in the case body. The case body includes a slit through which a seat belt is inserted and the swing lever body. A stopper that restricts swinging in both directions is formed,
The swing lever body has a clamping portion capable of clamping both surfaces of a vehicle seat belt;
The holding portion is in a position in the same direction as the slit of the case body in a natural state, and after the seat belt is held by the holding portion, the swing lever body is either of the stoppers by the tension of the seat belt. A seat belt holding device for a child seat, characterized in that it can swing to a position of   The swing lever body is pivotally supported by the same pivot pin, and a pair of levers that sandwich a seat belt of a vehicle and a pair that integrally couples the pair of levers that sandwich the seat belt. And a child seat belt belt holding device according to claim 1.   The case body is attached to the main body portion of the child seat so that the position of the slit overlaps with a seat belt insertion hole formed in the main body portion of the child seat. A child belt seat belt holding device according to claim. 4. The child seat according to claim 3, wherein the seat belt insertion hole is formed on both sides of the main body portion of the child seat and is formed in a curved shape from the upper portion to the lower portion of the main body portion. Belt holding device.

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