JP4114063B2 - Buckle for seat belt - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a buckle for fixing a seat belt to be attached to an infant seat or the like of an automobile.
[0002]
[Prior art]
Seat belts must be installed when seated in a car, and there is no distinction between adults and infants. I understand that this is a lifeline for adults when they encounter an accident, but for infants, being restrained by a seat belt is accompanied by a sense of pressure and restraint.
[0003]
The seat belt disclosed in Patent Document 1 is a device in which two three-point seat belts attached to an automobile are pushed into a buckle having cushioning properties in front of the abdomen. Patent Document 2 discloses a four-point seat belt that can be applied and used in a compact manner by using a gap between both sides of a seat in a compact manner. This seat belt is a simple type in which two belts from both sides of the seat portion of the seat and two belts from both shoulder portions are joined to one point at the abdomen. The seat belt of Patent Document 3 discloses a three-point seat belt in which belts provided on both shoulders of a backrest portion are attached to an upper portion of a breast pad whose lower portion is fixed to a seat portion.
[0004]
Such an existing seat belt is provided with a pad or cushion at the part that abuts the abdomen, but depending on the infant's body shape, it may be too tight or loose to always give the infant a sense of restraint and pressure due to tension. It was difficult to use for a long time. The appearance of a seat belt without such a feeling of pressure and restraint has been desired.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 6-10062 (see page 5 and FIG. 1)
[Patent Document 2]
Japanese Patent Laid-Open No. 11-43012 (see page 3 and FIG. 3)
[Patent Document 3]
JP 2001-71796 A (see page 3 and FIG. 2)
[0006]
[Problems to be solved by the invention]
In view of the above-mentioned facts, the present invention provides a seat belt buckle that is easy to handle and does not give a feeling of pressure or restraint even when an infant wears a seat belt, does not get tired even after long-term use. is there.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a buckle body having four insertion holes for inserting a tongue plate having a belt engaging portion and at least one locking portion fixed thereto, and a detachable body for insertion into the insertion port. The seatbelt buckle is characterized by comprising the four tongue plates and a lid having a pressing portion for operating the tongue plate. Easy to insert the tongue plate into the seat belt buckle insertion slot by fixing the buckle to the seat by passing the belt through the locking part attached to the seat belt buckle, attaching the belt to the four tongue plates Can be locked to. Since the belt is independently attached to each tongue plate, it is possible to adjust the tightening strength of the four belts individually, and the tension of the four belts can be adjusted according to the infant's body shape and posture. Each condition can be adjusted.
[0008]
The second feature of the present invention is that when the locking portion fixed to the main body is turned down, the belt engaging portions of the two tongue plates face substantially in the horizontal direction, and the belt engaging portions of the two tongue plates are oblique. 2. The seat belt buckle according to claim 1, wherein the buckle is directed upward. The belt engagement parts of the two tongue plates facing diagonally upward are engaged with the two shoulder belts from the backrest part, and the belt engagement parts of the two tongue plates facing substantially horizontal are for fixing the waist. Can be attached to the waist belt. In this way, by directing the belt engaging portion of the tongue plate in the respective directions of the waist and the shoulder, the belt is not twisted, and there is no sense of incongruity even when worn, giving a sense of security and stability to the infant.
[0009]
[Embodiments of the present invention]
Embodiments of the present invention will be described in detail below, but the present invention is not limited to the embodiments within the scope of the following gist.
[0010]
When the front view of the seat belt buckle 100 of the present invention is shown, as shown in FIG. 1, a lid 18 is provided on the upper part of the buckle body 11, and a belt is attached to the chair below the buckle body 11. There is a locking portion 13 for fixing at the fixing position, and a belt can be attached to the locking portion 13 for fixing and fixed to the chair. The belt engaging portions 14e and 15e of the upper two tongue plates face obliquely upward, and the shoulder belt is engaged therewith. The belt engaging portions 16e and 17e of the two tongue plates in the middle face substantially in the horizontal direction, and the waist belt is engaged therewith. By directing the belt engaging portions 14e, 15e, 16e, and 17e of the tongue plate in the direction of the belt to be engaged in this way, an infant fixed by the belt does not feel restrained or uncomfortable when the belt is attached. It provides a sense of security and stability to infants wearing belts.
[0011]
The material of the seat belt buckle 100 of the present invention may be made of metal, but is preferably made of a lightweight synthetic resin because of its weight and ease of handling. Examples of the synthetic resin include polyvinyl chloride, polyethylene, polypropylene, and polystyrene. However, the synthetic resin is not limited to these, and a synthetic resin having high hardness and weather resistance is desirable.
[0012]
As shown in FIG. 2, the inside of the main body 11 of the buckle is such that each chamber into which the tongue plate is inserted is partitioned by the boundary wall 22, and the inserted tongue plate is fitted along the boundary wall 22. It has become. A screw hole 19 is provided in the central portion of the main body 11 of the buckle, and a spring 20 is urged to fix the lid 18 shown in FIG.
[0013]
As shown in FIG. 3, the tongue plates 14, 15, 16, 17 inserted into the buckle body 11 have the same shape, and the tongue plates 15, 17 have the same shape, The insertion portions 15a and 17a are opposite to the insertion portions 14a and 16a of the tongue plates 14 and 16. The engaging piece 23 provided in each of the insertion portions 14a, 16a, 15a, and 17a has a structure in which the engaging piece attaching portion 23a is thin and has elasticity. The engagement piece 23 protrudes slightly above the frame 17b of the tongue plate. Due to the elasticity of the engagement piece attachment portion 23a, the engagement piece 23 is inserted when the tongue plates 14, 15, 16, 17 are inserted into the main body. Is pushed down and inserted. The engagement piece 23 of the inserted tongue plate returns to its original height by the elasticity of the engagement piece attachment portion 23a in the main body, and the engagement portion 23b is hooked on the frame 11a of the main body shown in FIG. Is done. The shape of the engagement piece 23 is not limited to this shape. For example, the engagement piece 23 may have a shape in which two engagement pieces are attached vertically and a spring is biased therebetween.
[0014]
FIG. 4 is a perspective view of the buckle, and the insertion port 12 is provided on each side surface of the main body 11. The insertion portions 14a, 16a, 15a, and 17a having the engaging pieces 23 are inclined so that the tongue plates 14, 15, 16, and 17 can be easily inserted into the insertion port 12. Further, the belt engaging portions 14e, 15e, 16e, and 17e for engaging the belt are bent in the direction in which the belt is applied. A concave portion 15c is provided in a bent portion of the insertion portion 15a (hereinafter, the same applies to 14a, 16a, and 17a), and convex portions 22a are provided on both sides of the insertion port 12 of the main body. In addition, we try to eliminate rattling. Further, a concave portion 15d is provided at the distal end of the insertion portion, and a convex portion 22b is provided at the back of the insertion port 12, so that the concave and convex portions are engaged to eliminate rattling after insertion, so that the tongue plate is stably held in the main body. It has become.
[0015]
As shown in FIG. 5, the lid 18 that covers the buckle body 11 is divided into two symmetrically in the vertical direction, and has a screw hole 25 at the center of one piece, and a column body 25 a above and below the screw hole 25. 25 b is provided, and the respective pillars 25 a and 25 b are engaged with the receiving holes 19 a and 19 b of the main body 11 shown in FIG. 2, and the lid 18 is stably held by the main body 11. The lid 18 is attached to the main body 11, and the spring 20 is urged to the main body 11 of the buckle through the screw hole 25 at the center and is attached with the screw 21. When the pressing portion 24 at the corner of the lid 18 divided into two parts attached to the main body 11 of the buckle is pressed with a finger, the engaging piece 23 is pressed and the engaging portion 23b is detached from the frame 11a of the main body. The tongue plate can be removed. The pressing part 24 at the corner of the lid 18 may be drawn with a round frame as a pressing part, or a pressing part may be clarified by providing a concave part or a convex part.
[0016]
The example which attached the buckle of this invention to the infant chair is shown in FIG. In FIG. 6, an infant chair 26 is fixed to a car seat with a seat belt 27. The buckle 100 of the present invention is fixed by the fixing belt 30 at a position corresponding to the crotch of the infant on the infant chair 26. When the shoulder belt 28 is attached to the upper tongue plate of the buckle 100 and the waist belt 29 is attached to the lower tongue plate, the infant is protected in a stable posture. Smaller and lighter than a buckle attached to a conventional infant seat belt, it does not give the infant a feeling of pressure or restraint. In addition, since the length can be adjusted by individual belts attached to the buckle, the length of each of the waist belt and the shoulder belt can be adjusted according to the condition of the infant's body. In addition, it can be used as a buckle for a seat belt for fixing at five points such as a racing car.
[0017]
【The invention's effect】
The buckle of the present invention has an effect that the tightening strength of the four belts can be individually adjusted by fixing one end of the buckle to the seat portion and locking the belt to the four tongue plates. Have. The belt engaging part of the two tongue plates provided on the upper part of the buckle of the present invention is engaged with the two shoulder belts from the backrest part, and the waist part is fixed to the belt engaging parts of the two lower tongue plates. The waist belt can be attached. By attaching the tongue plate to the waist and shoulder, the belt is not twisted, and there is no sense of incongruity when worn, giving the child a sense of security and stability. is doing.
[Brief description of the drawings]
FIG. 1 is a front view of a buckle.
FIG. 2 is a front view of a buckle body.
FIG. 3 is a front view of a tongue plate.
FIG. 4 is a perspective view of a buckle.
FIG. 5 is a front view of a lid body of a buckle.
FIG. 6 is a perspective view in which a buckle is attached to an infant seat.
[Explanation of symbols]
100: Buckle of the present invention 11: Buckle body 12: Insert port 13: Fixing plate 14: Tongue plate 15: Tongue plate 16: Tongue plate 17: Tongue plate 18: Lid 19: Screw hole 20: Spring 21: Screw 22 : Boundary wall 23: engagement piece 24: pressing part 25: screw hole 26: infant chair 27: seat belt 28: shoulder belt 29: waist belt 30: fixing belt

Claims (2)

A main body of a buckle having four insertion ports for inserting a tongue plate having a belt engaging portion and at least one locking portion fixed thereto, four detachable tongue plates to be inserted into the insertion port, and the tongue A buckle for a seat belt comprising: a lid body divided into two symmetrically having a pressing portion for operating each of the plates to be removed.   When the engaging part fixed to the main body is down, the belt engaging parts of the two tongue plates are directed substantially in the horizontal direction, and the belt engaging parts of the two tongue plates are directed obliquely upward. The seat belt buckle according to claim 1.

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