TWI834280B - child seat - Google Patents

Abstract

This invention is a separate type, ensuring strength while reducing weight. When the child seat 1 of the present invention is in use, the seat side engaging portion 23 of the seat portion 11 of the child seat body 2 is engaged with the backrest side engaging portion 76 of the backrest portion 12 . In addition, in the child seat 1, the vehicle engaging portion 24 composed of metal parts and the like is engaged with the mounting metal fitting 50 of the vehicle. When the child seat 1 makes an emergency stop while the vehicle is traveling, etc., the backrest side contact portion 74 and the impact absorbing material 75 of the backrest portion 12 are brought into contact with the armrest 22 of the seat portion 11 and the contact portion 34 is passed through the reinforcing portion. 33 transmits the force from the lower contact portion 35 to the vehicle engaging portion 24 . Thereby, the child seat 1 can withstand the force from the backrest portion 12 through the vehicle engaging portion 24 and prevent the backrest portion 12 from rotating. Therefore, the position or angle of the backrest portion 12 relative to the seat portion 11 has almost no change, thereby Can protect infants and young children seated.

Description

child seat

The present invention relates to a child seat, which is preferably suitable for installation in a car.

In the past, child seats were installed on the seats of vehicles such as automobiles and were widely used when infants and young children were riding in the vehicles. In addition, as a child seat, in addition to a body structure in which the seat portion for the infant to sit and the backrest portion that supports the infant's head or back portion are integrated, the head and the backrest portion can be separated or connected. The separated type of structure is also more popular.

Among them, in the separate type child seat, when not in use, the seat part and the backrest part are separated, for example, the seat surface or the back surface of the seat part faces the front or back surface of the backrest part, so that it can be folded into It is stored in a smaller size (for example, refer to Patent Document 1).

[Prior technical literature]

[Patent Document]

Patent Document 1: Japanese Patent Application Laid-Open No. 2014-210446 (Figure 3, etc.)

However, the child seat with this structure also needs to protect the infant seated in the car when the vehicle is hit by a collision. However, especially in the separable child seat, since the seat part and the backrest part are detachable, the strength of the connection part between the two is easy to lose. foot.

Therefore, it is also proposed to use larger metal parts to ensure strength as a separate child seat. However, this type of separate child seat has a problem of increasing the overall weight due to the large metal parts, which increases the burden of transportation and installation.

The present invention was made in view of the above points, and it is intended to propose a detachable child seat that ensures strength and suppresses weight.

In order to solve this problem, the child seat of the present invention is provided with: a seat part for infants and young children to sit; a backrest part that supports the back part of infants and young children; and a vehicle engaging part that is provided on the seat part and engages with the vehicle. ; The seat side engaging part is provided on the seat part and has metal parts to engage with the backrest; the backrest side engaging part is provided on the backrest and engages with the seat side engaging part; the retaining part is provided on The seat part is formed of a resin material and maintains its position and shape relative to the seat-side engaging part when an external force of a specific magnitude is applied; the first contact part is provided on the holding part and contacts the backrest part; and a second contact portion provided in the holding portion and in contact with the vehicle engaging portion.

In the present invention, when the child seat is engaged with the vehicle through the vehicle engagement portion, and when the backrest is about to tilt toward the seat portion when the vehicle is in an emergency stop, the first contact portion of the holding portion is It comes into contact with the backrest part, so that the second contact part of the holding part comes into contact with the vehicle engaging part. That is, in the present invention, since the holding portions respectively in contact with the backrest portion and the vehicle engaging portion are formed of resin materials, their positions and shapes are maintained, so that the backrest portion can be supported without increasing the weight.

According to the present invention, it is possible to implement a separate type child seat that can ensure strength and suppress weight.

1:Child seat

2: Child seat body

3: Outer cover

4:Safety belt

11: Seating Department

11L: Seat lower parts

11U: Seat upper parts

12:Backrest

21: Seat body part

21S: Seat surface

22: handrail

22L: handrail

22R: handrail

23: Seat side engaging part

23L: Seat side engaging part

23R: Seat side engaging part

24: Vehicle engagement part

24L: Vehicle engagement part

24R: Vehicle engagement part

31: Armrest body part

32:Arm support part

33: Reinforcement Department

34:Rear contact part

35: Lower contact part

41:Catching space

42: engagement shaft

43: Engagement reinforcement shaft

50: Install metal parts

51:Bracket

51A: Lower side panel

51B:Inside panel

51C:Outside panel

52: Shift engaging part

53: Rod holding part

53A:Main body part

53B: Rod corresponding part

54:Shift lever

54A: Rod body part

54B: Corner post part

54BS:Spring

54C: Cylindrical part

55:Rivets

55A: Cylindrical part

55B:Head

55C: riveting part

61:Rear end part

61A: Groove part

61B:Latching claw

62:Central Department

62A:Center plate

62AH: Positioning hole

62H: long hole

63: Front end

63A: Engagement release lever

71: Backrest base part

72: Backrest shifting part

73: Side protection department

74: Backrest side contact part

75:Impact absorbing material

76:Backrest side engaging part

77:Latching slot

F12: Force

X34: rear imaginary contact line

X35: Lower imaginary contact line

α: angle

Figure 1 is a schematic perspective view showing the structure of a child seat.

Figure 2 is a schematic perspective view showing the structure of the child seat body.

Fig. 3 is a schematic perspective view showing the structure of the seat portion.

Figure 4 is a schematic perspective view showing the structure of the parts on the seat.

FIG. 5 is a schematic perspective view showing the structure of the vehicle engaging portion.

FIG. 6 is a schematic diagram showing the structure of the backrest.

Figure 7 is a schematic front view showing the structure of the child seat body.

FIG. 8 is a schematic right side view showing the structure of the child seat body.

Figure 9 is a schematic cross-sectional view showing the structure of the child seat body.

FIG. 10 is a schematic cross-sectional view showing the structure of the child seat body.

Hereinafter, modes for implementing the invention (hereinafter referred to as embodiments) will be described using drawings.

[1. Overall composition of child seats]

FIG. 1 is a schematic perspective view showing the entire child seat 1 of this embodiment. The child seat 1 is roughly composed of a child seat body 2 with sufficient strength, a surface outer cover 3 covering the part of the child seat body 2 that is in contact with the infant, and a safety belt 4 that restrains the infant in a seated state. .

The outer cover 3 (Fig. 1) is composed of a combination of cloth or sponge materials and is divided into various parts, each of which has sufficient flexibility. Furthermore, the outer cover 3 is divided into a plurality of parts, and each part is detachable from the child seat body 2 or the seat belt 4 . The safety belt 4 (Fig. 1) is composed of a plurality of belts or parts, a part of which is installed or integrated into the child seat body 2.

In this specification, when describing each component, the front direction, the rear direction, the upper direction and the lower direction when viewed from the infant seated in the child seat 1 are referred to as "front", "rear", "upper" and "upper" respectively. "Down". In addition, the left direction and the right direction when the infant sitting on the child seat 1 is viewed from the front are called "left" and "right" respectively. In addition, in the following figures, the cover 3 and the seat belt 4 are omitted in order to clearly show the structure.

FIG. 2 is a schematic perspective view showing the entire child seat body 2 of this embodiment. The child seat body 2 is roughly composed of a seat portion 11 that mainly forms a seat surface, and a backrest portion 12 that mainly supports the upper body of the infant such as the head portion, shoulder portion, or back portion.

The child seat body 2 is configured so that the seat portion 11 and the backrest portion 12 can be easily separated and coupled. Therefore, when the child seat body 2 is in use, as shown in FIG. 2 , the seat portion 11 and the backrest portion 12 are combined into a state of use. In addition, when the child seat body 2 is stored in the trunk of a vehicle or the like when not in use, space can be saved by separating the seat portion 11 and the backrest portion 12 into an appropriately combined state.

[2. Composition of seating section]

FIG. 3 is a schematic perspective view of the seat portion 11 . The seat portion 11 is centered on the seat body portion 21 and is provided with armrests 22 (22L and 22R), seat side engaging portions 23 (23L and 23R) and vehicle engaging portions 24 (24L and 24R) on the left and right respectively. However, in FIG. 3 , the vehicle engaging portion 24R is omitted for convenience of drawing.

Moreover, the seat body part 21, the armrest 22, and the seat side engagement part 23 of the seat part 11 are mainly comprised centering on the combination of the upper seat part upper part 11U and the lower seat part lower part 11L. FIG. 4 is a schematic perspective view showing the seat upper part 11U.

The seat upper part 11U and the seat lower part 11L are both molded parts of a specific resin material. The seat upper part 11U and the seat lower part 11L fit into each other At this time, it is formed by blocking most of the outer circumference and setting up a space inside, and then forming a plurality of reinforcing parts such as beams or columns in the space.

The seat body 21 (Fig. 3) is a part that supports the lower body of the infant when the infant is seated. The upper surface of the seat body part 21, that is, the seat surface 21S, is formed into a gently curved surface that matches the body shape of the infant. In this seat surface 21S, approximately 1/3 of the front side is an inclined surface that descends as it goes forward, and approximately 2/3 of the rear side is a gentle inclined surface that slightly decreases as it goes rearward. .

[2-1. Composition of armrests and seat side engagement parts]

The armrests 22L and 22R, the seat side engaging portions 23L and 23R, and the vehicle engaging portions 24L and 24R are each configured to be symmetrical to each other. Hereinafter, the right armrest 22R, the seat side engaging portion 23R, and the vehicle engaging portion 24R will be described as an example, and the description of the left armrest 22L, the seat side engaging portion 23L, and the vehicle engaging portion 24L will be omitted.

An armrest 22R as a holding portion is provided at the right rear portion of the seat body portion 21 . The armrest 22R is roughly composed of an armrest body portion 31 that is a rear lower portion, and an arm support portion 32 that is a front upper portion.

The armrest body part 31 is disposed within approximately 1/3 of the right middle and rear side of the seat body part 21 and protrudes above the seat surface 21S. In addition, the shape of the handrail main body 31 when viewed from the left and right directions is a substantially trapezoidal shape. The front side of the trapezoid is a substantially vertical flat surface. On the other hand, the rear side of the trapezoid is an inclined surface connecting the front upper side and the rear lower side. .

The arm support portion 32 is a front upper portion of the armrest 22R, and the entire arm support portion 32 has a shape in which the front portion of a rectangular parallelepiped long in the front-rear direction is inclined downward. The rear half of the arm support part 32 is located on the upper side of the armrest body part 31 and is connected to the above-mentioned upper and lower part of the trapezoid. The front half of the arm support portion 32 protrudes further forward than the armrest body portion 31 . The arm support portion 32 enables the child to sit The infant's arms are placed on the upper side of the seat 1.

Moreover, the reinforcing part 33 is provided inside the armrest 22R. The reinforcing portion 33 is a so-called rib portion and is composed of a plurality of thin plate-shaped portions whose normal lines are oriented in the front-rear direction, the left-right direction, or the up-down direction. Therefore, when a large external force is applied to the armrest 22R, the position relative to the seat body 21 or the shape of each part hardly changes, and the armrest 22R can be well maintained.

Furthermore, the armrest 22R is provided with a rear contact portion 34 and a lower contact portion 35 for contacting other parts. The rear contact portion 34 is provided as a first contact portion on the rear surface of the arm support portion 32 . The rear contact portion 34 is formed in a generally flat plane shape, with its normal line facing generally in the rear direction. The lower contact portion 35 as the second contact portion is provided in a portion of the seat upper part 11U (Fig. 4) corresponding to the lower end of the armrest body portion 31. The lower contact portion 35 is formed into a substantially horizontal plane shape by combining the lower sides of a plurality of plate-shaped portions constituting the reinforcing portion 33 . For convenience of explanation, below, the rear contact portion 34 is also referred to as the first contact portion, and the lower contact portion 35 is also referred to as the second contact portion.

The seat-side engaging portion 23R (Fig. 3) is located slightly to the right from the center in the rear end portion of the seat body portion 21, and is mainly composed of an engaging space 41 and an engaging shaft 42. The engaging space 41 has a shape cut from the rear edge of the seat body 21 toward the front, and passes through the seat body 21 in the up and down direction.

The engagement shaft 42 which is a columnar component is formed into a columnar shape with the central axis extending in the left-right direction. The engagement shaft 42 is a structure in which a part of the seat upper part 11U and the seat lower part 11L made of a resin material is covered around an engagement reinforcing shaft 43 (Fig. 4) made of a metal material. The engagement reinforcing shaft 43 is an elongated cylindrical member that aligns the central axis in the left-right direction. It is located near the rear end of the seat body 21 and penetrates from near the left end to near the right end.

[2-2. Structure of the vehicle engaging part]

The vehicle engagement portion 24R (Fig. 3) is incorporated in the seat body portion 21 at a position near the rear and lower side on the right side and directly below the armrest 22R. The vehicle engagement portion 24R complies with the standard called ISOFIX (International Standards Organization FIX: International Organization for Standardization Fixture) (ISO 13216-1: 1999), and is used to engage with mounting metal fittings (also known as mounting hardware) installed on the seat of the vehicle. It is called the lower anchorage) and the engaging part.

FIG. 5 is a schematic perspective view showing a state in which the vehicle engaging portion 24R is disassembled into each main component part. The vehicle engaging portion 24R is roughly composed of a bracket 51 , a shift engaging portion 52 , a rod holding portion 53 , a shift rod 54 and a plurality of rivets 55 . In addition, a part of the mounting metal fitting 50 on the vehicle side is shown in FIG. 5 . The mounting metal fitting 50 is formed in an elongated cylindrical shape with the central axis extending in the left-right direction.

The bracket 51 is formed by connecting the inner panel 51B and the outer panel 51C to the lower panel 51A, respectively, so that the entire bracket 51 takes a shape like a hollow rectangular parallelepiped in which the upper side, the front side, and the rear side are removed. The bracket 51 is manufactured by cutting or bending a thick steel plate and has sufficient rigidity.

The lower side plate 51A is formed in a rectangular plate shape that is long in the front-rear direction. The inner side plate 51B is formed in a substantially square plate shape, and the lower side thereof is connected to the left side of the lower side plate 51A. The outer plate 51C has a shape in which a rectangle is cut near the vertex of the front upper side from the same square as the inner plate 51B, and the lower edge thereof is connected to the right side of the lower side plate 51A. The inner plate 51B and the outer plate 51C are provided with holes through which the above-mentioned engagement reinforcing shaft 43 (Fig. 4) or a plurality of rivets 55 are inserted.

Compared with the bracket 51 , the displacement engaging portion 52 is configured in a rectangular parallelepiped shape that is sufficiently longer in the front-rear direction, slightly shorter in the left-right direction, and approximately half the length in the up-down direction. The displacement engaging portion 52 is composed of a combination of metal parts provided inside and resin parts covering most of the outer periphery. In addition, the displacement engagement portion 52 is roughly composed of a rear end portion 61 on the rear side, a central portion 62 in the center, and a front end portion on the front side. The end portion 63 is formed.

The rear end portion 61 is formed with a groove portion 61A cut forward in the forward direction and penetrating in the left-right direction on the rear side, and an engaging claw 61B or a push member (not shown) is provided inside the groove portion 61A. When the mounting metal piece 50 enters the groove portion 61A, the rear end portion 61 causes the engaging claw 61B to engage with the mounting metal piece 50 and maintains the engaged state by the action of the push member.

The center portion 62 is formed on the left side of the interior with a center plate 62A, a metal plate-shaped component with a normal line facing the left and right directions. The central plate 62A is provided with positioning holes 62AH formed by circular holes penetrating in the left and right directions at a plurality of positions arranged at specific intervals in the front and rear directions slightly lower than the center in the up and down direction. In addition, the central portion 62 is provided with an elongated hole 62H along the front-rear direction slightly lower than the center in the up-down direction. The long hole 62H is formed in the part other than the center plate 62A, and penetrates it in the left-right direction.

The front end portion 63 is provided with an engagement release lever 63A. The engagement release lever 63A is configured to be displaceable in the front and rear directions, and is linked to the engagement claws of the rear end portion 61 via an interlocking member (not shown) provided in the central portion 62 . If the engagement claw 61B in the rear end portion 61 is engaged with the mounting metal member 50 and the engagement release lever 63A of the front end portion 63 is operated, the engaging claw 61B can be released from the engagement claw 61B by shifting the engagement portion 52 . Install the metal parts 50 for engagement.

The rod holding part 53 is a molded part of a specific resin material, and is formed such that a plate-shaped rod corresponding part 53B that is long in the up-down direction and thin in the left-right direction is joined to the right side of a rectangular parallelepiped-shaped main part 53A that is long in the front-rear direction. The shape of the front part. Compared with the bracket 51 , the length of the body part 53A in the front-rear direction is the same, the length in the left-right direction is slightly shorter, and the length in the up-down direction is about half. The body part 53A is provided with a plurality of reinforcing members inside, so that its shape can be maintained with almost no deformation, especially when a large external force is applied from the up and down direction. The rod corresponding portion 53B is shaped like a flat, hollow rectangular parallelepiped that is shorter in the left-right direction and has the right side thereof omitted. Also, keep it on the rod The portion 53, like the bracket 51, is provided with a plurality of holes through which the above-mentioned engagement reinforcing shaft 43 (Fig. 3) or a plurality of rivets 55 are respectively inserted.

The shift lever 54 is composed of a lever body part 54A, a corner post part 54B, and a cylindrical part 54C. The rod body portion 54A is formed in a rectangular parallelepiped shape that is slightly shorter in the up-down direction and the front-rear direction and slightly longer in the left-right direction than the rod corresponding portion 53B of the rod holding portion 53 . The corner post part 54B is a square post protruding in the left direction from the upper part of the left side of the rod body part 54A. A spring 54BS and the like are incorporated in the corner post portion 54B.

The cylindrical portion 54C has a cylindrical shape with the central axis extending in the left-right direction, and protrudes in the left direction from a lower portion of the left side of the rod body portion 54A. The diameter of the cylindrical portion 54C is slightly smaller than the diameter of each positioning hole 62AH provided in the central plate 62A of the central portion 62 . The cylindrical portion 54C is made of a specific metal material and has sufficient strength.

The rivet 55 is made of a specific metal material. This rivet 55 is formed around a cylindrical cylindrical portion 55A with its central axis extending in the left-right direction. A disk-shaped or hemispherical head 55B is provided in advance at one end of the cylindrical portion 55A. Moreover, the other end of the cylindrical part 55A is a rivet part 55C. The riveted portion 55C initially has the same cylindrical shape as the cylindrical portion 55A, but is deformed into a disc shape or a hemispherical shape by performing riveting processing using a specific tool. The diameter of the head 55B and the diameter of the deformed riveted portion 55C are larger than the diameter of the cylindrical portion 55A.

When the vehicle engaging portion 24R is manufactured, the displacement engaging portion 52 is inserted between the inner panel 51B and the outer panel 51C of the bracket 51 and then the main body portion 53A of the rod holding portion 53 is inserted. Next, each rivet 55 is inserted into each circular hole provided in the bracket 51 and the rod holding part 53 in the vehicle engaging part 24R, and the riveting process is performed on the riveting part 55C.

Furthermore, the shift lever 54 is attached to the vehicle engaging part 24R from the right side of the lever holding part 53 . At this time, the cylindrical portion 54C of the shift rod 54 is inserted into the center plate 62A provided in the center portion 62 A certain positioning hole 62AH. In addition, the shift lever 54 is biased toward the left direction, that is, toward the lever holding portion 53 by the action of the spring 54BS.

Thereafter, the vehicle engaging portion 24R inserts the engaging reinforcing shaft 43 into the bracket 51 and the rod holding portion 53 (Fig. 3), and mounts the bracket 51 and the rod holding portion 53 to the seat upper part 11U (Fig. 4) .

The thus assembled vehicle engaging portion 24R inserts the cylindrical portion 54C of the shift lever 54 into the positioning hole 62AH of the center plate 62A, thereby fixing the position of the shifting engaging portion 52 to the bracket 51 . When a force in the right direction is applied to the shift lever 54 and the shift lever 54 is displaced in the right direction, the vehicle engaging portion 24R is in a state in which the cylindrical portion 54C is pulled out from the positioning hole 62AH of the center plate 62A.

At this time, the vehicle engaging portion 24R is in a state in which the shifting engaging portion 52 can be displaced in the front-rear direction and can be displaced to a desired position. Thereafter, when the force applied to the shift lever 54 is released in the vehicle engaging portion 24R, the shift lever 54 is displaced in the left direction by the action of the spring 54BS, and the cylindrical portion 54C is inserted into the positioning hole of the center plate 62A. 62AH to fix the position of the shifting engaging portion 52 .

However, as described above in the vehicle engaging portion 24R, the bracket 51 is made of a metal material with sufficient strength, and the strength of the rod holding portion 53 is increased by the reinforcing member. In addition, the vehicle engaging portion 24R fixes the rod holding portion 53 to the bracket 51 with a plurality of rivets 55, and an engagement reinforcing shaft 43 is inserted into the bracket 51 and the rod holding portion 53. Therefore, even if a large external force is applied from the upper side of the rod holding portion 53 , the vehicle engaging portion 24R will hardly deform, and the bracket 51 can bear the external force via the rivet 55 and the engaging reinforcing shaft 43 .

In addition, when the vehicle engaging portion 24R is attached to the seat upper part 11U (Fig. 4), the upper surface of the rod holding portion 53 (Fig. 5) is brought into contact with the lower contact portion 35 of the armrest 22R. Therefore, assuming that since When the contact portion 35 under the armrest 22R exerts a large force in the downward direction, the vehicle engagement portion 24R can also transmit the force from the rod holding portion 53 to the metal bracket via the rivet 55 and the engagement reinforcing shaft 43 51 and bear it.

[3.Composition of the backrest]

FIG. 6 is a schematic perspective view of the backrest portion 12 of this embodiment. The backrest portion 12 is composed of a backrest base portion 71 attached to the seat portion 11 and a backrest displacement portion 72 on the front side of the backrest base portion 71 that can slide (displace) in the up and down direction.

The backrest base portion 71 is generally configured in a rectangular parallelepiped shape which is longer in the up-down direction, slightly shorter in the left-right direction, and shorter in the front-rear direction. Most of the backrest base portion 71 is made of a resin material, and a space is formed inside the backrest base portion 71 by a combination of parts that mainly form the front side or the inner side and parts that mainly form the rear side or the outer side. Each part of the backrest base 71 is appropriately provided with holes for inserting various parts or vents for ensuring ventilation.

In addition, the backrest base portion 71 is formed with side protection portions 73 protruding forward at upper portions of both left and right sides. Furthermore, backrest side contact portions 74 are respectively provided on the front surfaces near the lower ends of both left and right sides of the backrest base portion 71 , that is, on the lower side of the side protection portions 73 . The backrest side contact portion 74 is formed in a generally flat plane shape, and the normal line of the plane faces generally in the forward direction. Impact absorbing materials 75 are respectively attached to the backrest side contact portions 74 . As the impact absorbing material 75 , for example, polyurethane foam with a relatively high density can be used. Incidentally, in FIG. 6 , for convenience of drawing, only the impact absorbing material 75 on the right side is shown.

On the lower end portion of the backrest base portion 71, two backrest-side engaging portions 76 that engage with the seat portion 11 are formed at two locations slightly apart from the center in the left-right direction. The backrest-side engaging portion 76 is generally formed into a rectangular parallelepiped shape that is long in the up-down direction and short in the left-right direction. The shape of the lower portion when viewed from the left-right direction is semicircular.

In addition, the backrest side engaging portion 76 has an engaging groove 77 formed near the center in the up-down direction by digging from the rear side to near the center in the front-rear direction. The engaging groove 77 extends from the left side to the right side of the backrest side engaging portion 76 and is formed in a semicircular shape near the front end when viewed from the left and right directions.

The backrest shift portion 72 is formed with a portion on the upper side that protects the infant's head, and a portion on the lower side that supports the infant's shoulders, back, and the like. In addition, the backrest shift portion 72 is also formed with a hole for inserting the seat belt 4 or a vent hole for ensuring ventilation.

[4. Positional relationship of various parts in use]

However, when the child seat body 2 is in use (Fig. 2), the seat side engaging portion 23 (Fig. 3, etc.) of the seat portion 11 is engaged with the backrest side engaging portion 76 (Fig. 6) of the backrest portion 12. Here, FIG. 7 is a front view of the child seat body 2 viewed from the front side. FIG. 8 is a side view of the lower part of the child seat body 2 when viewed from the right side. FIG. 9 is a cross-sectional view showing the lower portion when the A1-A2 cross-section of FIG. 7 is viewed from the right side. Fig. 10 is a cross-sectional view showing the lower side portion when the cross-section B1-B2 of Fig. 7 is viewed from the right side.

As shown in FIG. 10 , when the child seat body 2 is in use, the backrest-side engaging portion 76 of the backrest portion 12 enters the engaging space 41 of the seat portion 11 , and the engaging shaft 42 of the seat portion 11 enters the backrest portion 12 The state of the engaging groove 77. Furthermore, when the child seat body 2 is in use and is installed on the seat of a vehicle and used (infants and young children are seated), as shown in FIG. 9 , the vehicle engaging portion 24 of the seat portion 11 is installed on the vehicle. The metal parts snap together.

Incidentally, when the child seat body 2 is in use, a protrusion (not shown) formed at a specific part of the seat part 11 is engaged with a protrusion (not shown) formed at a specific part of the backrest part 12 . Thereby, the child seat body 2 can be maintained in a good state of use. In addition, in the child seat body 2, if a large force is applied rearward to the upper part of the backrest 12, the protrusions can be released. By engaging with each other, the backrest portion 12 and the seat portion 11 are separated.

In this use state, in the child seat body 2 , the rear contact portion 34 of the armrest 22 of the seat portion 11 is located directly in front of the backrest side contact portion 74 and the impact absorbing material 75 of the backrest portion 12 . In addition, in the seat part 11, the rigidity between the rear abutment part 34 and the lower abutment part 35 is ensured by the reinforcing part 33 of the armrest 22, and as shown in FIG. 9, the lower abutment part 35 of the armrest 22 abuts the rear abutment part 34. The rod holding part 53 is connected to the vehicle engaging part 24. Furthermore, in the vehicle engaging portion 24 , the rod holding portion 53 is fixed to the bracket 51 via rivets 55 or the like, and the rod holding portion 53 is engaged with the displacement engaging portion 52 by the shift rod 54 .

Furthermore, as shown in FIG. 9 , in the seat portion 11 of the child seat body 2 , the virtual contact line The angle α formed by the imaginary contact line X35 below the lower contact portion 35 is an acute angle less than 90 degrees. For convenience of explanation, below, the rear virtual contact line X34 is also called the first virtual contact line, and the lower virtual contact line X35 is also called the second virtual contact line.

[5. Effects, etc.]

In the above structure, the child seat 1 of this embodiment can be configured by separating the child seat body 2 into a seat part 11 and a backrest part 12. In the use state (Fig. 2, etc.), the seat side of the seat part 11 is locked. The engaging portion 23 is engaged with the backrest side engaging portion 76 of the backrest portion 12 .

A vehicle with a child seat 1 mounted on the seat may encounter an emergency stop or a collision while traveling. In this situation, although the vehicle wants to stop, the child seat 1 wants to continue moving forward due to the moment of inertia. At this time, in the child seat body 2, in the seat portion 11 and the backrest portion 12 that are separable from each other, it is considered that a force in the forward direction acts on each position of the center of gravity.

Since the seat portion 11 is engaged with the mounting metal member 50 of the vehicle through the vehicle engaging portion 24 located on the rear side, movement in the forward direction is restricted. Backrest part 12, on the lower side, backrest side The front side portion of the engaging portion 76 is in contact with the inner wall of the engaging space 41 of the seat portion 11 , etc., thereby restricting the forward movement, but the forward movement is not restricted on the upper side. Therefore, the upper side of the backrest 12 is tilted forward and downward. Specifically, the backrest 12 is rotated counterclockwise around the engagement shaft 42 of the seat 11 as shown in FIG. 10 and so on.

At this time, the backrest portion 12 causes the impact absorbing material 75 attached to the backrest-side abutment portion 74 to contact the rear abutment portion 34 of the armrest 22 of the seat portion 11, thereby exerting a force F12 in the forward and downward direction (Fig. 9). The seat portion 11 transmits the force F12 from the lower contact portion 35 to the vehicle engaging portion 24 by incorporating the armrest 22 with the reinforcing portion 33 .

Here, the vehicle engaging portion 24 of the seat portion 11 is composed of a combination of metal parts and the like, and is engaged with the mounting metal fitting 50 of the vehicle. In addition, the lower surface of the seat portion 11 is supported by the seat surface of the vehicle seat. Therefore, the seat portion 11 maintains the position or shape of the armrest 22 and the vehicle engaging portion 24 by integrating the armrest 22 with the reinforcing portion 33 and the vehicle engaging portion 24 with metal parts and the like, and withstands the pressure from the backrest. The force of the backrest part 12 prevents the backrest part 12 from rotating. Thereby, in the child seat 1, the position or angle of the backrest portion 12 relative to the seat portion 11 is almost unchanged, thereby protecting the infant sitting in the seat.

In particular, the armrest 22 of the seat portion 11 is provided with a reinforcing portion 33 in a range from the abutment portion 34 after the abutment with the backrest portion 12 to the abutment portion 35 below the vehicle engagement portion 24 . Therefore, in the armrest 22 , even if a large force is exerted on the rear abutment portion 34 from the backrest portion 12 , the armrest 22 is hardly deformed, and the force can be transmitted from the rear abutment portion 34 to the lower portion via the reinforcing portion 33 . Contact portion 35.

Therefore, although the child seat 1 is configured such that the seat portion 11 and the backrest portion 12 can be separated or combined, there is no need to add metal parts to the portion of the seat portion 11 that contacts the backrest portion 12 or to engage the vehicle. Enlargement of metal parts in Part 24, etc. Thus, in child seat 1, Compared with a structure in which these metal parts are used to bear the force of the backrest 12, the required strength can be ensured, and the number of metal parts can be reduced or miniaturized, so that weight reduction or cost reduction can be achieved.

Furthermore, in the seat portion 11 , the distance from the engagement shaft 42 to the rear abutment portion 34 is sufficiently increased, for example, approximately 4 times, compared to the distance from the engagement axis 42 to the lower abutment portion 35 . In this way, in the child seat 1, when the backrest 12 wants to rotate around the engaging axis 42 of the seat part 11, according to the lever principle, the rear abutment part 34 located far away from the engaging axis 42 is exerted. Lesser power.

Therefore, in the child seat 1, the armrest 22 of the seat part 11 is made of a molded part of resin material, which is less strong than the case of using metal parts. However, with the appropriately reinforced reinforcing part 33, it can fully support the force applied from the backrest part 12. Power. Similarly, in the child seat 1, the backrest side 12 side can be ensured by making the backrest side contact portion 74 or its vicinity a molded part of resin material and appropriately providing a reinforcing portion of resin material inside. strength yet lightweight construction.

Furthermore, in the seat portion 11, the vicinity of the end of the engagement reinforcing shaft 43 of the reinforcing engagement shaft 42 is inserted into the bracket 51 of the vehicle engagement portion 24 (Figs. 4 and 5). Therefore, in the child seat 1 , when a force is exerted on the backrest 12 to tilt the upper side forward and downward due to a collision of a vehicle, etc., the bracket 51 of the vehicle engaging portion 24 can reliably receive the engagement reinforcement as a reaction thereto. Axis 43 attempts to escape in the backward direction. That is, the child seat 1 can finally withstand any force exerted on the seat portion 11 from the backrest 12 via the rear abutment portion 34 and the engagement reinforcing shaft 43 by incorporating the vehicle engaging portion 24 with metal parts. .

From another point of view, in the child seat 1, when a force is exerted on the backrest 12 to tilt the upper side forward and downward due to a collision of a vehicle, etc., some parts of the seat 11 need to bear the force exerted by the backrest 12. Force in the forward direction. Also, in the child seat 1, as mentioned above As mentioned above, if the lever principle is considered, it is expected that the force from the backrest 12 is received at a location far away from the engagement axis 42 .

Therefore, in the child seat 1, focusing on the armrest 22 protruding upward from the seat surface 21S in the seat portion 11, the armrest 22 is configured to be higher than usual within a range that does not impair its original function as an armrest. Therefore, in the child seat 1, the contact portion 34 that receives the force from the backrest portion 12 can be disposed far away from the engagement axis 42, and a sufficient area can be ensured. Thereby, the child seat 1 can suppress the force applied to the rear abutment part 34 to a small size, and also suppress the force acting per unit area to a small size, and can easily ensure it with a resin material without using metal parts. The intensity of need.

In addition, in the seat portion 11, when viewed from the left and right directions, a virtual contact line The angle formed by wiring X35 is set to an acute angle less than 90 degrees (Figure 9). Therefore, when the seat portion 11 attempts to rotate about the engagement shaft 42 as the center of the backrest portion 12 , a portion of the force F12 applied from the backrest portion 12 to the rear abutment portion 34 can be directed toward the vehicle engagement portion 24 , is transmitted from the lower contact portion 35 to the vehicle engaging portion 24 .

According to the above structure, when the child seat 1 of this embodiment is in use, the seat side engaging portion 23 of the seat portion 11 of the child seat body 2 is engaged with the backrest side engaging portion 76 of the backrest portion 12 . In addition, in the child seat 1, the vehicle engaging portion 24 composed of metal parts and the like is engaged with the mounting metal fitting 50 of the vehicle. When the child seat 1 makes an emergency stop while the vehicle is traveling, etc., the backrest side contact portion 74 and the impact absorbing material 75 of the backrest portion 12 are brought into contact with the armrest 22 of the seat portion 11 and the contact portion 34 is passed through the reinforcing portion. 33 transmits the force from the lower contact portion 35 to the vehicle engaging portion 24 . Thereby, the child seat 1 can withstand the force from the backrest 12 through the vehicle engaging portion 24 and prevent the backrest 12 from rotating. Therefore, the position or angle of the backrest 12 relative to the seat 11 can be adjusted. Virtually unchanged, thus protecting infants and young children while seated.

[6. Other embodiments]

In addition, in the above-mentioned embodiment, the case where the rear abutment part 34 is provided in the armrest 22 of the seat part 11 has been described (FIG. 3 etc.). However, the present invention is not limited to this. For example, a backrest support part (not shown) standing upward from the seat body part 21 may be provided on the rear side of the armrest 22, and a rear abutment part 34 may be formed behind the backrest support part. . In this case, a reinforcing part 33 is provided inside the backrest support part, and a lower contact part 35 is provided at the lower part thereof, so that the lower contact part 35 is in contact with the vehicle engagement part 24.

Furthermore, in the above-mentioned embodiment, the case where the engagement reinforcing shaft 43 is supported by the vehicle engagement portion 24 and the lower contact portion 35 of the armrest 22 is brought into contact with the vehicle engagement portion 24 has been described (Fig. 9, etc. ). However, the present invention is not limited to this. For example, the engagement reinforcing shaft 43 may be supported by a component different from the vehicle engagement part 24 , and the contact part 35 under the armrest 22 may be in contact with this component. In this case, it is sufficient that the part is made of metal or the like and has sufficient strength.

In addition, in the above-mentioned embodiment, the case where the engagement reinforcing shaft 43 is supported by the bracket 51 etc. of the vehicle engagement part 24 has been described. However, the present invention is not limited to this. For example, the engagement reinforcing shaft 43 may be supported by other parts different from the vehicle engagement part 24 .

Furthermore, in the above embodiment, the distance between the engagement shaft 42 and the rear abutment part 34 has been increased to approximately 4 Describe the situation about twice as much. However, the present invention is not limited thereto. For example, the distance from the engagement shaft 42 to the rear contact portion 34 may also be set to various ratios relative to the distance from the engagement shaft 42 to the lower contact portion 35 . Alternatively, the distance from the engagement shaft 42 to the lower contact portion 35 can also be made smaller than the distance from the engagement shaft 42 to the rear contact portion 34 .

Furthermore, in the above-mentioned embodiment, in the seat portion 11, the connecting seat The angle α formed by the virtual contact line X34 behind the engagement shaft 42 and the rear contact portion 34 of the side engagement portion 23 and the virtual contact line X35 connecting the engagement shaft 42 and the lower contact portion 35 is not reached. Describe the situation of an acute angle of 90 degrees. However, the present invention is not limited to this, and the angle α may be set to 90 degrees or more.

Furthermore, in the above embodiment, it has been explained that in the use state, the engaging shaft 42 of the seat side engaging portion 23 provided on the seat portion 11 is inserted into the engaging portion 76 provided on the backrest portion 12. The coupling groove 77 is used to connect the seat part 11 and the backrest part 12 (Fig. 10, etc.). However, the present invention is not limited to this. For example, a hole may be provided near the rear end of the seat surface 21S of the seat part 11, and the backrest-side engaging part 76 of the backrest part 12 may be inserted into the hole, etc., through various structures. The seat part 11 and the backrest part 12 are connected.

In addition, the present invention is not limited to each of the above-described embodiments and other embodiments. That is, the scope of application of the present invention includes an embodiment in which part or all of the above-mentioned embodiments are arbitrarily combined with any or all of the above-mentioned other embodiments, or an embodiment in which a part is extracted.

Furthermore, in the above embodiment, it has been described that the seat portion 11 as the seat portion, the backrest portion 12 as the backrest portion, the vehicle engaging portion 24 as the vehicle engaging portion, and the seat side engaging portion as the seat side engaging portion. part 23, the backrest side engaging part 76 as the backrest side engaging part, the armrest 22 as the holding part, the rear contact part 34 as the first contact part, and the lower contact part 35 as the second contact part. The case of child seat 1 as a child seat. However, the present invention is not limited to this, and the seat part, the backrest part, the vehicle engaging part, the seat side engaging part, the backrest side engaging part, the holding part, the first contact part, and the second contact part may be composed of other various structures. part, forming a child seat.

[Industrial availability]

The present invention can be applied to, for example, a child seat in which the seat part and the backrest part can be separated.

2: Child seat body

11: Seating department

12:Backrest

21: Seat body part

21S: Seat surface

22: handrail

24: Vehicle engagement part

34:Rear contact part

35: Lower contact part

43: Engagement reinforcement shaft

50: Install metal parts

51:Bracket

52: Shift engaging part

53: Rod holding part

61:Rear end part

62:Central Department

63: Front end

74: Backrest side contact part

F12: Force

X34: rear imaginary contact line

X35: Lower imaginary contact line

α: angle

Claims (6)

A child seat, characterized by having: a seat part for infants and young children to sit on; a backrest part for supporting the back part of the above-mentioned infant and young child; and a vehicle engagement part which is provided on the above-mentioned seat part and has metal parts to engage with the vehicle. Engagement; a seat-side engaging portion, which is provided on the above-mentioned seat portion and engages with the above-mentioned backrest; a backrest-side engaging portion, which is provided on the above-mentioned backrest and engages with the above-mentioned seat-side engaging portion; a retaining portion, which is provided on the above-mentioned seat part and is molded from a resin material to maintain the position and shape of the above-mentioned seat-side engaging part when an external force of a specific magnitude is applied; a first contact part is provided on the above-mentioned holding part and The backrest portion is in contact; and a second contact portion is provided in the holding portion and is in contact with the first contact portion side of the vehicle engaging portion. The child seat of claim 1, wherein the holding portion is an armrest, and the first contact portion of the holding portion is provided at a portion of the armrest that is opposite to the backrest. The child seat of Claim 1, wherein the holding portion has a plurality of thin plates facing in different directions from the normal line inside the holding portion between the first contact portion and the second contact portion. The rib-shaped reinforcement is reinforced. The child seat of Claim 1, wherein in the above-mentioned seat part, the distance between the above-mentioned seat-side engagement part and the above-mentioned first contact part is greater than the distance between the above-mentioned seat-side engagement part and the above-mentioned second contact part. The child seat according to claim 1, wherein the seat side engaging portion has a columnar component extending in the left-right direction when viewed from the infant, and the vehicle engaging portion engages with the columnar component. The child seat of claim 5, wherein the seat-side engaging portion has an imaginary first contact line connecting the seat-side engaging portion and the first contact portion when the infant is viewed from the left-right direction. , and the angle formed by the imaginary second imaginary contact line connecting the above-mentioned seat side engaging portion and the above-mentioned second contact portion is less than 90 degrees.