JPH03182870A - Seat for baby buggy - Google Patents

Abstract

PURPOSE:To enhance usability by connecting one support section which is located at either one of the front end side and the rear end side of a seat section, with a baby buggy main body in such a way as to be held in a position definite in height, and thereby supporting the other support section in such a way as to be vertically moved in a seat the back seat of which can be reclined so as to be adjusted. CONSTITUTION:Each side-bar 3 which is provided for each side section of a seat 1 along the longitudinal direction as a frame member to support the seat 1, is mounted in opposition to the other frame member 4 at the side of a main body by the use of the front side end section 5 and the rear side end section 6 of each side-bar. In this case, each front side end section 5 is rotatably supported in such a way that each side-bar itself 3 can be rocked around its front side end section so that it thereby acts as a rocking center side end section. Meanwhile, each circular long groove which is equally spaced from the rocking center, is formed in each rear side end section 6 in such a way that each side-bar 3 can be rocked so that it thereby acts as a rocking side end section with a pin 8 inserted therein. The major axis of the long hole 7 is roughly extended in the vertical direction so that each rear side end section 6 can thereby be vertically moved as each side-bar 3 is rocked.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat structure for a baby carriage in which the backrest part has a reclining structure, and in particular, the reclining angle of the backrest part (indicated by the angle of the backrest part with respect to the horizontal direction).
The present invention relates to a baby carriage seat that can adjust the inclination angle of the seat in the front-rear direction to an ergonomically optimum angle according to the situation.

[Prior Art] As one of the seat styles for baby carriages, a reclining structure in which the inclination angle of the backrest portion is adjustable is widely known. Some baby carriages of this type can be used either as a chair with the backrest raised or as a bed with the backrest folded down.

By the way, safety standards regarding baby carriages require that reclining baby carriages meet the following requirements.

■ The angle at which it can be reclined is 130° or more.

■ In the chair state, the backrest is 1100 mm or more, and the seat is horizontal horizontally and tilted backwards forward and backward.

On the other hand, the standards for box-type baby carriages used in bed state require that the bottom surface be horizontal from front to back. These standards are established with consideration to safe and preferred postures for infants. In other words, if you consider the seat of a reclining stroller whose backrest can be reclined to the bed position, it is tilted backwards in the front-rear direction when it is in the chair position. When in bed, it is desirable that the bed be horizontal in the front-rear direction.

In addition, according to clinical length tests, 11 points behind the seat in a chair position
It is said that Q is preferably around 10°.

This is because it is possible to prevent the infant from slipping off the seat, and at the same time, it is possible to evenly distribute the weight between the back and the buttocks, and it is possible to maintain a stable posture easily. By the way, the backrest of an adult chair is 112mm.
°, it is said that a seat recline angle of 30 is preferable, but for infants and young children who cannot fully control their own posture while sitting, the recline angle is set to be larger than for adults. It can be said that it is safe. Furthermore, infants tend to tilt their upper bodies forward when sitting, and in this sense as well, it is safe to have a large rearward tilt angle of the seat.

However, in conventional reclining strollers, the seat is fixed, and if the inclination angle is increased to around 10 degrees, the upper body will be lower than the lower body when used in bed, or only the waist will be lowered. This results in a downward and cramped condition, making it impossible to maintain a favorable posture.

For this reason, the angle of inclination of the seat in the front-rear direction was only tilted back to a nearly horizontal state.

[Problems to be Solved by the Invention] As described above, if the seat is approximately horizontal in the front-rear direction, when the seat is used as a chair, the lower body of the infant will gradually slide forward, as shown in Figure 12. This causes the person to go from sitting on his butt to sitting on his hips or back.
This causes your back to arch, resulting in a very unfavorable posture. On the other hand, if the angle of backward inclination of the seat section is increased, it will cause problems when used in a bed position, as described above.

The present invention has been made in view of these circumstances and to effectively solve the problems.

Therefore, an object of the present invention is to provide a reclining stroller that can select the optimal relationship between the seat and the backrest when used in a chair or on a bed. The aim is to provide seating for all.

[Means for solving the problem] Basically, the inclination angle of the seat in the front and rear direction can be adjusted. It may be configured such that the state of engagement with the frame member can be variably selected.

If we consider the above-mentioned configuration itself, there are too many to list, but to give a more specific example, for example, if the seat itself is made of a rigid plate-like member, The front end and the frame member on the main body side supporting this portion are connected to each other so that the engagement position can be moved up and down or changed. Further, such connection with the frame member on the main body side may be at the rear end of the seat portion. In addition, in these cases, the frame foam on the main body side is set so that the rear end with respect to the front end, or the front end with respect to the rear end, maintains its height position and allows the other end to move up and down. It is pivoted.

Considering yet another specific example, the seat is supported by a rigid frame support, and the position of the front end of the seat relative to the frame member or other frame support on the body side is Or the height position is fixed on either the rear end side position,
It suffices if the other side is connected to be vertically movable.

[Function] The inclination angle of the seat can be adjusted between a horizontal state and a backward tilted state of about 10 degrees. Therefore, if the front end of the seat is movable up and down, this front end can be moved up and down between the same height position as the rear end whose height position is fixed and a higher position. Conversely, when the rear end is vertically movable, the rear end can be vertically moved between the same height position as the front end whose height position is fixed and a lower position.

When used as a chair, the recline angle of the backrest is approximately 110°, the backward tilt angle of the seat is approximately 100°,
When used in bed, the reclining angle of the backrest is approximately 170° to 180°, and the seat is held approximately horizontally.

[Examples] Some embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1 FIG. 1 is a perspective view showing the entire framework of a baby carriage to which an embodiment of the present invention is adopted. The seat part 1 and the backrest part 2 are schematically shown by broken lines for convenience. In this embodiment, the seat 1
The frame member 3 supporting the seat is a side par provided along the front-rear direction on both sides of the seat. Each side par 3 is attached to another frame member 4 on the main body side at its front end 5 and rear end 6. The front end 5 is pivotally supported around which the side par 3 itself can swing, thereby forming a swing center end.

Further, in the rear end 6, an arc-shaped long hole is formed equidistant from the center of swing to allow the above-mentioned swing of the side par 3, and a pin 8 (see FIGS. 2 and 2) is formed in the rear end 6. 3
(see figure) is inserted to form the swing side end. The long diameter of the elongated hole 7 extends substantially in the vertical direction, and the rear end 6 is configured to move up and down as the side par 3 swings.

FIG. 2 is an enlarged front view of a main part illustrating the state of engagement between the rear end 6 of the side par 3 and the frame member 4 on the main body side, and FIG. 3 is a cutaway side view of the main part of FIG. As shown in the figure, a pin 8 passing through the frame member 4 on the main body side maintains the engagement between the rear end 6 of the side par 3 and the frame member 4 on the main body side. A large diameter portion 9 serving as a stopper is formed at one end of the pin 8, and a stopper groove 10 in which the large diameter portion 9 fits is formed in the elongated hole 7. The number of stopper grooves 10 corresponds to the number of adjustment stages of the seat portion 1, and in this embodiment, there are three stopper grooves.
It is configured to be adjustable in stages. A grip member 11 is attached to the other end of the pin 8 at the tip thereof which passes through the frame member 4 on the main body side. Knob member 11 and frame member 4 on the main body side
A compression coil spring 12 is provided between the two and the pin 8 is inserted into the compression coil spring 12. Therefore, when the knob 1] is pushed in the direction of arrow A in the figure, the large diameter portion 9 separates from the stopper groove 10, and the side par 3 becomes swingable within the range of the engagement state between the elongated hole 7 and the pin 8. Become. It goes without saying that the pin 8 may be provided at the rear end 6 and the elongated hole 7 and the stopper groove 10 may be formed in the frame member 4.

When the seat is used as a chair, that is, when the seat is used with the backrest 2 raised, the large diameter portion 9 of the pin 8 engages with the top of the stopper groove 10. Therefore, the rear end 6 of the side par 3 is fixed at the lowest position. In this state, the seat part 1 obtains the maximum backward inclination angle, which is set at approximately 10'.

When the seat is used in a bed state, that is, when the seat is used with the backrest portion 2 reclined, the large diameter portion 9 of the pin 8 engages with the lowest part of the stopper groove 10. Therefore, the rear end 6 of the side par 3 is fixed at the highest position. In this state, the seat portion 1 is set to be substantially horizontal.

When the seat is used in an intermediate state between a chair and a bed, that is, when the reclining angle is approximately 130°, the large diameter portion 9 of the pin 8 is inserted into the stopper groove 10.
In this state, the seat part 1 obtains a backward inclination angle of about 5 degrees depending on the reclining angle between the backward inclination angle of 10'' and the horizontal.

FIGS. 4 and 5 are a perspective view of a main part showing a reference example in which the backward tilt adjustment mechanism of the seat part 1 and the reclining mechanism of the backrest part 2 are linked, and a side view showing the linked state. The lower end of the frame H13 supporting the backrest 2 and the rear end 6 (swinging end) of the side par 3 are connected by a link member 14 to restrict their mutual movement.

Further, FIG. 6 is a perspective view of essential parts showing an example in which the rear end 6 of the side par 3 is configured as the swinging center side end, and the front side end 5 is configured as the swinging side end.

In other embodiments described below, the structure for adjusting the backward inclination angle of the seat is a means for vertically moving the front end or the rear end of the seat. It is similar to Therefore, in the embodiments described below, the structure and operation of this means will be explained.

Embodiment 2 FIG. 7 is a perspective view showing a baby carriage employing another embodiment of the present invention. In the embodiment, it is in a bed state.

In this embodiment, the frame portion R30 that supports the seat portion 1 is a cross bar provided along the width direction at each of the front end portion and the rear end portion of the seat portion 1. The cross bar 30 is attached to the other frame member 4 on the main body side at both ends thereof. In the figure, the cross bar 30 provided on the front side of the baby carriage is supported by the multistage hook 15, and the cross bar 30 on the rear side is directly attached to the frame member 4 and its height position is fixed. ing. Therefore, the front end of the seat 1 can be moved up and down by changing the stage of the multistage hook 15 on which the front crossbar 30 is hung. Details of the multistage hook 15 are shown in the enlarged perspective view of the main part in FIG.

Embodiment 3 1 FIG. 9 is a perspective view showing a baby carriage employing still another embodiment of the present invention, and corresponds to FIG. 7 of Embodiment 2. In this embodiment as well, the frame member 30 that supports the seat portion 1 is a crossbar.

The cross bar 30 provided on the front side of the baby carriage has crank portions 16 formed at both ends thereof, the rotation axes of which coincide with each other. Therefore, this crank part]
By rotating the crossbar 6, the crossbar 30 can be moved in the downward direction, and this allows the front end of the seat 1 to move up and down.

FIG. 10 is an exploded perspective view enlarged to show details of the crank portion 16. As shown in the figure, it is mainly composed of an arm part 17 having a rotation radius and a support part 8 for attaching this arm part 17 to the frame member 4 on the main body side, and the engagement between the arm part 17 and the support part 18 is A clutch mechanism 19 is constructed on the mating surfaces. This clutch mechanism 19 is provided with meshing teeth 20 for preventing the arm 17 from slipping and rotating due to the rotational force due to the weight of the seat 1 acting on the arm 17.

FIG. 11 is a perspective view showing meshing teeth 20 formed on the support portion 18 side. The clutch mechanism 19 is connected by tightening a screw 21 for fixing the arm part 17 and the support part 18 to the frame part 4 on the main body side so that the meshing parts 20 mesh with each other. .

Further, by loosening the screw 21, the meshing teeth 20 are separated from each other, and the clutch mechanism 19 leaves the force transmission path.

Therefore, the simultaneous movement of the arm portion 17 is obvious, and the seat portion 1
It is possible to adjust the backward tilt angle. The link member 22 connected to the cross bar 30 shown in FIG. 9 is connected to the reclining mechanism, so that the reclining operation and the backward tilt angle adjusting operation of the seat portion 1 can be linked.

The baby carriages of the above-mentioned embodiments are typical examples of reclining type strollers, and in other various reclining type strollers, basically, the seat is moved up and down by moving the front end or rear end of the seat. , it goes without saying that the same effects as those of these embodiments can be obtained.

3 [Effects of the Invention] As is clear from the above explanation, according to the present invention, the following excellent effects are exhibited.

That is, since the reclining baby carriage is configured to be able to adjust the rearward inclination angle of the seat, it is possible to always set the rearward inclination angle of the seat in an appropriate state according to the reclining angle. This prevents infants from slipping off the seat when the chair is used, as shown in Figure 13, and at the same time distributes the weight evenly between the back and buttocks, allowing the infant to maintain a comfortable and stable posture. can be kept.

Furthermore, when used in bed, the seat and backrest can be made almost horizontal in the front-rear direction, as shown in FIG. 4, and the most stable posture can be maintained for infants to sleep.

In addition, it is possible to adjust and set the backward inclination angle of the seat regardless of the reclining angle, and this makes it possible to select an appropriate posture according to the posture of the infant placed in the stroller or changes in body shape during the developmental stage. .

4

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the entire framework of a baby carriage to which an embodiment of the present invention is adopted, and Fig. 2 shows the engagement relationship between the side bar supporting the seat shown in Fig. 1 and the frame member on the main body side. FIG. 3 is an enlarged front view of the main part for explanation, FIG. 3 is a cutaway side view of the main part of FIG. FIG. 5 is a side view showing the interlocking state of the seat and backrest shown in FIG. 4, FIG. 6 is a perspective view of the main parts showing another embodiment, and FIG.
The figure is a perspective view showing a baby carriage in which another embodiment of the present invention is adopted, FIG. 8 is an enlarged perspective view of main parts showing details of the multistage hook of FIG. 7, and FIG. FIG. 10 is an enlarged exploded perspective view of the main part showing details of the crank part in FIG. 9, and FIG. 11 shows the support part in FIG. 10 viewed from the back side. FIG. 12 is a schematic diagram showing the posture of an infant when the seat of a conventional reclining stroller is used in the chair state, and FIG. 13 is a schematic diagram showing the baby's posture when the seat of the stroller according to the present invention is used in the chair state 5. FIG. 14 is a schematic diagram showing the posture of an infant when the seat of FIG. 13 is used in bed. In addition, in the figure, 1 is a seat part, 2 is a backrest part, 3 is a side bar as a frame member that supports the seat part, 4 is a frame member on the main body side,
5 is the front end of the side bar, 6 is the rear end of the side bar, 7 is a long hole, 8 is a pin, 15 is a multistage hook, 16 is a crank part, and 30 is a frame part H that supports the seat part. This is the crossbar. 6 h'r's 7 figure 2

Claims (1)

[Claims] (1) In a baby carriage seat that has a seat and a backrest, and the backrest can be reclined, the part of the member that supports the seat that is located at the front end of the seat or the rear end of the seat A seat for a baby carriage, characterized in that one of the parts located at is connected to the baby carriage body so as to be at a fixed height position, and the other part is connected to the baby carriage body so as to be movable up and down.