JPS643704B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat for a baby carriage, and more particularly to an improvement in the shape of the seat, which becomes bed-like when the backrest is reclined.

A chair-shaped seat that includes a seat and a backrest is popular as a baby carriage seat. In such a seat, if the backrest portion is provided so that its inclination angle can be changed, it can be transformed into a bed-like shape.

Safety standards for baby carriages require that a head guard be installed on a bed-like seat. A head guard is placed opposite the top of an infant's head in a stroller to prevent the infant's head from sticking out or even slipping off the bed-like seat. be.

The aforementioned head guard is only needed when the seat is in a bed-like configuration. Therefore, when considering the sitting comfort of the infant, it is not desirable for the head guard to be placed over the infant's head to the extent that the backrest portion is raised. Therefore, when the backrest is upright, this head guard is substantially aligned with the backrest, and only when the backrest is collapsed into a bed-like position, does the headguard face the top of the infant's head. It is desirable to be located so that

In order to meet these demands, in the process of changing the inclination angle of the backrest, the degree of rotation of the head guard at the end of this movement process must be
It is necessary to configure the rotation degree to be greater than the degree of rotation at the beginning of this movement process. Therefore, it is not only necessary to interlock the backrest holding member that holds the backrest portion and the headguard holding member that holds the head guard, but also to adjust the degree of rotation of the headguard holding member with respect to the backrest holding member as appropriate. be.

Therefore, the main object of the present invention is to provide a baby carriage seat, in particular an interlocking mechanism between a backrest holding member and a head guard holding member, which can satisfy the above-mentioned needs.

Briefly speaking, the present invention is configured such that the head guard holding member is rotated by a pulling force and a pushing force applied from a rigid connecting link connected to the head guard holding member. It is connected to a connecting member forming part of a tilt angle fixing means for fixing the angle in a plurality of adjusted positions, and the connecting member is therefore rotated in response to the tilt angle changing movement of the backrest holding member. This rotational movement attempts to control the attitude of the head guard holding member via the connecting link.

Other objects and features of the present invention will become more apparent from the detailed description given below with reference to the drawings.

FIG. 1 is a side view showing the frame structure of a baby carriage equipped with a mechanism for changing the inclination angle of the backrest, which is of interest to the present invention. Regarding the baby carriage shown here,
Only the constituent elements that are of interest to this invention will be extracted and explained.

The seat attached to this baby carriage includes a seat, a backrest, and a head guard. The seat is mounted thereon, for example, by means of a laterally extending member 8 included in the baby carriage body 1. The backrest part is a backrest pivot provided on a connecting member 10 provided on a fixed member, such as the lower end of the push rod 4 (this lower end portion is hidden by another member and is not visible in FIG. 1). It is held by a backrest holding member 9 rotatably attached via a mounting pin 11. In order to fix the inclination angle of the backrest holding member 9 in an appropriate state and adjust the inclination angle of the backrest part, for example, the angle between the push rod 4 and the backrest holding member 9 is adjusted and the adjusted angle is adjusted. All you have to do is fix it in position. for that,
It can be seen that it is sufficient to connect the hand lever 4 and the backrest holding member 9 to each other with a suitable connecting member and to change the linear distance between both ends of this connecting member.

Below, first, such a backrest holding member 9
A mechanism for changing the inclination angle will be explained.

2 is a side view showing the appearance of the inclination angle fixing means of the backrest inclination angle changing mechanism shown in FIG. 1. FIG.
FIG. 3 is a side view of the mechanism shown in FIG. 2 with the operating knob removed. 4 to 6 are a front view, a left side view, and a rear view, respectively, showing the long connecting member shown in FIG. 3. 7 is a front view showing the short connecting member of FIG. 3. FIG. FIGS. 8 to 11 are side views respectively showing typical operating states sequentially obtained by changing from the state shown in FIG. 3.

As shown in FIG. 1, a pair of short connecting members 12 and long connecting members 13 are provided to adjust the angle between the hand lever 4 and the backrest holding member 9. The state of the backrest holding member 9 shown in solid lines in FIG. 1 corresponds to that in FIG. 11, and the state of the backrest holding member 9 shown in imaginary lines corresponds to that in FIGS.
Corresponds to the state shown in the figure. Below, each connecting member 12, 1
3 and how they are connected will be explained in detail.

As shown separately in FIGS. 4 to 6, the long connecting member 13 has circular through holes 14 at both ends thereof.
15. A termination defining piece 16 is formed on the rear side (the right side in FIG. 4), the function of which will become clear from the description below. In this embodiment, a reinforcing piece 17 is formed which extends further from the end defining piece 16 and has a two-ply structure. Due to the two-layered structure including this reinforcing piece 17, the short connecting member 12 is positioned between them, as will be described later. Note that the through hole 15 is provided so as to penetrate up to the reinforcing piece 17.

As shown alone in FIG. 7, the short connecting member 12 is provided with a circular through hole 18 at one end thereof and an elongated hole 19 at the other end thereof. Long hole 1
9 extends in a slightly curved direction, but basically extends in the longitudinal direction of the short connecting member 12. One side 12a of the short connecting member 12 and the elongated hole 19
A slightly protruding abutment portion 20 is formed at the end where the abutment portion 20 is provided. The function of this abutting portion 20 will be described later.

Figures 1 to 3 and Figures 8 to 11
As shown in the figure, one end of the short connecting member 12 is rotatably connected to the intermediate portion of the backrest holding member 9 by a first pivot pin 21 inserted through the through hole 18 . The other end of the short connecting member 12 is sandwiched between a reinforcing piece 17 formed at one end of the long connecting member 13 and the main body of the long connecting member 13 . In this state, the second pivot pin 22 is inserted with the elongated hole 19 and the through hole 15 aligned to form a series of holes. Thereby, the other end of the short connecting member 12 is rotatably connected to one end of the long connecting member 13. Note that the second pivot pin 22 also holds the operating knob 23 on the outer surface side of the long connecting member 13. The other end of the long connecting member 13 has a third pivot pin 2 inserted into the through hole 14.
4, it is rotatably connected to a position facing the first pivot pin 21 on the push rod 4 as a fixing member.

Note that in the connected state of the short connecting member 12 and the long connecting member 13 as described above, the first pivot pin 21
and the length between which the second pivot pin 22 is located is:
The length between the positions of the second pivot pin 22 and the third pivot pin 24 is selected to be short. The operation and operation of the reclining adjustment mechanism described above will be explained below.

The state shown by the imaginary line in FIG. 1 and the state shown in FIGS. 2 and 3 are states in which the backrest holding member 9 is in its most upright position. In this state,
The short connecting member 12 is in contact with the side portion 16b (FIG. 3) of the end defining piece 16 of the long connecting member 13, and rotates in one direction around the second pivot pin 22 of the short connecting member 12, that is, as shown in the figure. The end of clockwise rotation is defined. That is, the first pivot pin 21
The long connecting member 13 connects to the third pivot pin 2 while keeping the distance between the third pivot pin 24 and the
It takes a posture extending downward from 4. Therefore, even if a load is applied to the backrest holding member 9, the distance between the first pivot pin 21 and the third pivot pin 24 is kept constant, and accordingly, the backrest holding member 9 is held at its most upright position. It is maintained at an upward slope. The backrest holding member 9 is configured so that it can be adjusted to the highest tilted state, a more reclined intermediate tilted state, and the most tilted tilted state. Such adjustment of the tilt state is performed via the operating knob 23.

In order to achieve an intermediate tilted state, a counterclockwise force is applied via the operating knob 23 to the short connecting member 12 and the long connecting member 13 in the state of FIG. 2 or 3. Accordingly, a state as shown in FIG. 8 is obtained. In this state, the short connecting member 12 overlaps the long connecting member 13. In this state, the backrest holding member 9 is rotated slightly counterclockwise about the backrest pivoting pin 11 due to the positional relationship of the first to third pivoting pins 21, 22, and 24. From the state shown in FIG. 8, if a counterclockwise force is further applied via the operating knob 23 (second pivot pin 22), the state shown in FIG. 9 is realized. That is, the short connecting member 12 is
The state of overlapping with the long connecting member 13 shown in FIG. 8 is exceeded. During this operation process, the short connecting member 12 is rotating counterclockwise about the second pivot pin 22.

In the state shown in FIG. 9, the abutting portion 20 as a part of the short connecting member 12 is connected to the end 16a of the end defining piece 16 as a part of the long connecting member 13 on the side where the second pivot pin 22 is located. They are shown in a butt state. At this time, the second pivot pin 22 is located at one end of the elongated hole 19, that is, at the lower end in the figure. In this state, the elongated hole 19 extends in a direction perpendicular to the direction in which the elongated connecting member 13 extends. In this state, the short connecting member 12 does not rotate any further in the counterclockwise direction about the second pivot pin 22 due to the abutting state described above. Therefore, the angle between the short connecting member 12 and the long connecting member 13 is fixed, and the first pivot pin 2
The distance between the first and third pivot pins 24 is maintained at an intermediate length, and the backrest holding member 9 is maintained at an intermediate inclination state. At this time, the long connecting member 13
is in a position extending rearward from the third pivot pin 24.

In this embodiment, the abutting portion 20 is provided to protrude from the side of the short connecting member 12, but such a configuration is not necessarily required. for example,
If the end portion 16a of the end defining piece 16 is further extended,
can perform similar functions.

To change the state shown in FIG. 9 to the most inclined state, press the operation knob 23 (second pivot pin 22).
Lift it up against gravity, etc., and first attach the second pivot pin 2.
2 at the other end of the elongated hole 19, ie at the upper end according to the figures. This state is the 10th
As shown in the figure. In the state shown in FIG. 10, the abutting portion 20 is in a state where it does not abut against the end portion 16a of the termination defining piece 16. Therefore, the short connecting member 12 is in a state where it can be further rotated counterclockwise about the second pivot pin 22. In this state, if force is applied to the operating knob 23 and auxiliary backrest holding member 9 to rotate the short connecting member 12 counterclockwise, the short connecting member 12 will be aligned with the long connecting member 13. The state is realized. This state is shown in FIG. 11, where the first pivot pin 2
1 and the third pivot pin 24 is maintained at the longest state, and the long connecting member 13 takes a posture extending rearward and downward from the third pivot pin 24. 1st
The state shown in FIG. 1 is the state in which the backrest holding member 9 is at its most reclined position.

In this way, the inclination state of the backrest holding member 9 can be changed in three stages and fixed in each state. In addition, from the state shown in Fig. 11, reversely
In order to return to the state shown in the figure and the state shown in FIG.
The tilt state of the can be adjusted.

In the embodiment of the present invention, a mechanism for adjusting the angle of the head guard holding member is further added to the above-described structure. That is, in the above-described operation, focusing on the long connecting member 13, the long connecting member 13 moves from the most upright state to the intermediate tilted state to the most fallen state. is the third pivot pin 24
From the posture of extending downward, it first rotates backward and takes the posture of extending backward, and then rotates forward and assumes the posture of extending backward and downward. This movement is utilized in the configuration described below.

12 to 14 show an embodiment of the present invention, in which FIG. 12 shows the backrest in its maximum upright state, FIG. 13 shows the backrest in its intermediately inclined state, and FIG.
Figure 4 shows the maximum reclined state of the backrest.
When FIG. 12 is compared with FIGS. 13 and 14, it can be seen that one member is omitted from FIG. 12. This is a push rod 4 that serves as a fixing member on the baby carriage main body side. In addition, the first
The hand lever 4 shown in Figures 3 and 14 is slightly different in shape, etc. from the hand lever 4 shown in Figure 1 etc., but since they are equivalent parts, the same reference numbers have been used. It is something. In addition, in the following explanation, the same reference numerals will be used for the parts corresponding to the elements that appeared in the above explanation.

The backrest holding member 9 includes a backrest pivot pin 11
Since the backrest holding member 9 is directly attached to the hand lever 4 via the handle bar 4, the backrest holding member 9 is in a state where it overlaps with the hand push lever 4 in the most upright state shown in FIG. Further, in this embodiment, an inclination angle fixing means including the short connecting member 12 and the long connecting member 13 as described in detail in FIGS. 2 to 11 is used. However, the only difference in the inclination angle fixing means in this embodiment is the attachment state of the short connecting member 12 to the backrest holding member 9. That is, the first pivot pin 2 for connecting the short connecting member 12 to the backrest holding member 9
1 is positioned on a bracket 41 extending from the backrest holding member 9. As described above, even when the backrest holding member 9 is in its most upright state and aligned with the hand lever 4 in the lateral direction, it is connected to the short connecting member 12 and the long connecting member 12 as shown in FIG. This is to enable a relative positional relationship with the member 13 to be established, and therefore a state corresponding to the state shown in FIGS. 2 and 3 described above. Furthermore, a slight difference between the short connecting member 12 and the long connecting member 13 is that the abutting portion 20 described above is not formed in a protruding state, and instead, the long connecting member 1
The end portion 16a of the end defining piece 16 of No. 3 is extended longer. Of course, also in this embodiment, the abutting portion 20 may be formed in a protruding state on the short connecting member 12. The other configurations and operations are the same as those described with reference to FIGS. 2 to 11, so further explanation will be omitted.

In this embodiment, the backrest part 29 is held by a backrest holding member 9, and the head guard 30 is held by a head guard holding member 31, as schematically shown in FIG. The head guard holding member 31 is rotatably connected to the upper end of the backrest holding member 9 via a pivot pin 42. Near the upper end of the head guard holding member 31, one end of a rigid connection link 36, such as a rod, is operably connected. The other end of the connecting link 36 is bent, for example, to form a pin 43, and the pin 43 has an arc shape at a position between the second pivot pin 22 and the third pivot pin 24 of the long connecting member 13. It is received in an elongated hole 44 that is formed to extend inward.

Next, the operation of the head guard holding member 31 in relation to the backrest holding member 9 will be explained with reference to FIGS. 12 to 14. In the state shown in FIG. 12, the pin 43 is located at one end of the elongated hole 44. From this state, the short connecting member 12 and the long connecting member 13 go through a state corresponding to that shown in FIG. 8 described above, and then reach the state shown in the next FIG. 13.
In the state corresponding to FIG. 8 described above, the pin 43 has reached the other end of the elongated hole 44, and in the state shown in FIG. 13, the pin 43 has returned to one end of the elongated hole 44. The reason why the elongated hole 44 is used in the connecting portion between the connecting link 36 and the long connecting member 13 in this way is to eliminate the stress exerted on the connecting link 36 in the state corresponding to FIG. 8. In the state shown in FIG. 13, the backrest holding member 9 reaches an intermediate tilted state from the most upright state shown in FIG. The rearward displacement of the head guard holding member 31 is offset by the connecting link 36 being displaced rearward accordingly, and as a result, the relative displacement of the head guard holding member 31 with respect to the backrest holding member 9 is The positional relationship between the two objects is not changed.

In this way, the backrest holding member 9 and the head guard holding member 31 remain aligned in a straight line during the period from the maximum upright state of the backrest shown in FIG. 12 to the intermediate tilted state of the backrest shown in FIG. Depending on the backrest part 29 and head guard 30
The backrest part 2 remains lined up on one plane.
9 is changed.

When the backrest reaches its maximum tilted state as shown in FIG. 14, the long connecting member 13 is rotated forward while the pin 43 remains located at one end of the long hole 44, thereby causing the connecting link 36 to be displaced forward. At the same time,
Since the backrest holding member 9 is rotated downward, the head guard holding member 31 is displaced rearward. Therefore, the connecting link 36 applies a pulling force to the head guard holding member 31. Accordingly, the head guard holding member 31 is bent upward from the end of the backrest holding member 9, and the head guard 30 is accordingly bent relative to the backrest portion 29. When the state shown in FIG. 14 is reached, the seat including the backrest portion 29 is in a bed shape, and the head guard 30 is in a state where it can perform its original function as a head guard.

As described above, according to the present invention, the head guard holding member is rotated relative to the backrest holding member 9 by the pulling force and pushing force of the connecting link, and one end of the connecting link is connected to the backrest holding member. Since it is connected to a long connecting member that moves according to the movement of changing the inclination angle of the member, it is possible to make subtle movement adjustments to the head guard holding member, and therefore, the desired movement for the head guard as described above can be made. can be given. In addition, the long connecting member that connects the connecting links is part of the inclination angle fixing means that the backrest holding member is originally provided for when the backrest holding member is tilted to finally form a bed shape, so the number of parts can be reduced. The effects of the present invention can be expected without increasing the amount.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the frame structure of a baby carriage equipped with a mechanism for changing the inclination angle of the backrest, which is of interest to the present invention. 2 is a side view showing the appearance of the inclination angle fixing means of the backrest inclination angle changing mechanism shown in FIG. 1. FIG. FIG. 3 is a side view of the mechanism shown in FIG. 2 with the operating knob removed. 4 to 6 are a front view, a left side view, and a rear view, respectively, showing the long connecting member shown in FIG. 3. 7 is a front view showing the short connecting member of FIG. 3. FIG. 8 to 11 are side views showing typical operating states obtained by changing from the state shown in FIG. 3, respectively. 1st
2 to 14 show an embodiment of the present invention, and FIG. 12 shows the backrest in its maximum raised state;
FIG. 13 shows the backrest in its intermediate tilted state, and FIG. 14 shows the backrest in its maximum tilted state. In the figure, 1 is the baby carriage body, 4 is the hand lever,
9 is a backrest holding member, 11 is a backrest pivot pin, 12 is a short connecting member, 12a is a short connecting member 12
, 13 is a long connecting member, 16 is an end defining piece, 16a is an end of the end defining piece 16, 16b is a side part of the end defining piece 16, 19 is a long hole, 20 is a butting part, 21 is a a first pivot pin; 22 is a second pivot pin;
24 is a third pivot pin, 29 is a backrest portion, 30 is a head guard, 31 is a head guard holding member, 3
6 is a connecting link, and 42 is a pivot pin.

Claims (1)

[Scope of Claims] 1. A seat part, a backrest part 29 rising from the rear of the seat part, and a head guard 30 disposed above the backrest part 29, the backrest part 29 being a baby carriage. The head guard 30 is held by a backrest holding member 9 that is provided so as to be able to change its inclination angle with respect to the fixing member 4 on the main body side.
In the baby carriage seat held by a head guard holding member 31 rotatably provided at the upper end portion of the backrest holding member 9, the changed inclination angle of the backrest holding member 9 is adjusted by a plurality of adjustments. A short connecting member 12 whose one end is rotatably connected to the middle part of the backrest holding member 9 by a first pivot pin 21 serves as an inclination angle fixing means for fixing the short position in the fixed position. One end is rotatably connected by a second pivot pin 22 formed at the other end of the connecting member 12 and received in an elongated hole 19 extending in the longitudinal direction of the short connecting member 12; and a long connecting member 13 rotatably connected by a third pivot pin 24 to a position opposite to the first pivot pin 21 on the fixed member 4 on the baby carriage main body side, pin 21 and the second pivot pin 22
The length between the second pivot pin 22 and the third pivot pin 24 is selected to be shorter than the length between the second pivot pin 22 and the third pivot pin 24, An end defining piece 16 is formed at a position that comes into contact with the long connecting member 13 in the process of rotation about the second pivot pin 22, and when the backrest holding member 9 is in its most upright position, One side 1 of the short connecting member 12
2a to the side portion 16b of the end defining piece 16, the distance between the first pivot pin 21 and the third pivot pin 24 is kept in the shortest state, and the long connection When the member 13 assumes a posture extending downward from the third pivot pin 24 and the backrest holding member 9 is in an intermediate inclined state, the one side portion 1 of the short connecting member 12
an abutting portion 20 formed on the other end side of 2a;
The first pivot pin 21 and the third pivot pin 24 are brought into contact with the end portion 16a of the end defining piece 16 on the side where the second pivot pin 22 is located.
When the long connecting member 13 assumes a posture extending rearward from the third pivot pin 24 while maintaining an intermediate distance between the seat and the backrest holding member 9, After the second pivot pin 22 is moved within the elongated hole 19 and the abutment portion 20 is released from abutting against the end portion 16a of the end defining piece 16, the short connecting member 12 and the Long connecting member 13
The long connecting member 13 is connected to the third pivot pin 24 while keeping the distance between the first pivot pin 21 and the third pivot pin 24 in the longest state by arranging them in a straight line. The head guard holding member 31 is connected between the head guard holding member 31 and the long connecting member 13 as a mechanism for adjusting the angle of the head guard holding member 31. It further includes a rigid connecting link 36 for rotating the head guard holding member 31, which can apply both a pulling force and a pushing force to the head guard holding member, and one end of the connecting link 36 is connected to the head guard holding member. connected near the upper end of 31,
The seat for a baby carriage, wherein the other end of the long connecting member 31 is connected to a position between the second pivot pin 22 and the third pivot pin 24.