JPH0574354U - Childcare chair - Google Patents

Abstract

(57) [Summary] [Purpose] In a nursery chair equipped with wheels, in order to naturally invite an infant to sleep, it is possible to easily control the operation of reciprocating back and forth like a cradle. An oscillating body 18 is provided rotatably with respect to an axle 16 of a wheel 15, and an engaging body 22 held by the oscillating body 18 is provided to selectively integrate the rotation of the wheel 15 and the oscillating body 18. Can be engaged with the rib 17 of the wheel 15. An elastic body 32 is connected between the rocking body 18 and the leg member 8. Wheel 1
In order to reliably define the rotatable angular range of 5,
The connection link 33, which is connected to the leg member 8 by the pin 4 and the pin 31, may be rotatably connected to the oscillating body 18 via the pin 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a child-care chair that has wheels that roll on the floor and that can be moved by rolling the wheels.

[0002]

[Prior Art]

 Some child-care chairs for sitting infants have wheels that roll on the floor. In a child-care chair equipped with wheels, it is easy to move the chair to any place while the infant is seated.

[0003]

[Problems to be solved by the device]

 In the above-mentioned child-care chair, by moving it back and forth, a movement like a cradle is given, and thereby, a method of using to invite an infant to sleep naturally can be considered. However, in such a use method, the caregiver himself / herself must control the reciprocating movement of the child-care chair, so that the caregiver's burden is burdened especially when the child-care chair must be moved back and forth for a long time. It will be extremely large.

Therefore, as described above, an object of the present invention is to provide a child-care chair that is reciprocally moved back and forth to be conveniently used as a cradle. .

[0005]

[Means for Solving the Problems]

 This invention is directed to a child-care chair having a seat portion and a plurality of leg members for supporting the seat portion, and the lower end portions of the leg members each having a rotatable wheel attached thereto. In order to solve the above-mentioned technical problem, an oscillating body rotatably provided with respect to an axle of a wheel and an engaging body for selectively unifying rotation of the wheel and rotation of the oscillating body. , And an elastic body connected between a point on the oscillator and a point on the leg member.

[0006]

[Action]

 In this invention, when the rotation of the wheel and the rotation of the rocking body are integrated by the engaging body, the rocking body is also rotated with the rotation of the wheel. At this time, since the oscillating body and the leg member are connected by the elastic body, the elasticity exerted by the elastic body acts on the rotation of the oscillating body. Therefore, no matter which direction the oscillating body rotates about a certain angle, a force that increases as each rotation angle increases is exerted on the oscillating body in a direction opposite to the rotating direction.

[0007]

[Effect of the device]

 As described above, according to the present invention, due to the elasticity exerted on the oscillating body, a force for returning the wheel to a certain angle is exerted on the rotation of the wheel. Therefore, when the child-care chair is reciprocated back and forth, the chair is urged to move in the opposite direction at each end of the reciprocating movement, so that the child-care worker can reciprocate with respect to the chair. It is possible to reduce the labor burden for the control required when performing the operation.

Further, as described above, since elasticity is exerted on the rotation of the wheels, the direction changing operation at each end of the reciprocating movement of the child-care chair can be smoothly performed. Therefore, it is possible to reduce the impact of the direction change at each end of the reciprocating movement on the baby sitting on the child-care chair.

Further, when the rotation of the wheel and the rotation of the rocking body are integrated as described above, the rotatable angular range of the rocking body is restricted by the elastic body, so that the rotation of the wheel is substantially prevented. You can apply the brake. Therefore, it is possible to prevent the child-care chair from unexpectedly self-propelled, and the child-care person can leave the child-care chair with peace of mind while the infant is seated.

Further, if the rotation of the wheel is made independent of the rotation of the oscillating body, the original function of the wheel can be utilized as it is, and the child-care chair can be moved to any place while the infant is seated. Is easy.

The present invention may further include a long connecting link made of a rigid body, one end of which is rotatably connected to the oscillating body and the other end of which is rotatably connected to the leg member. The connecting portion at at least one of the one end and the other end of the connecting link is constituted by a combination of an elongated hole extending in the longitudinal direction of the connecting link and a pin received in the elongated hole. As described above, by providing the connecting link, when the rotation of the wheel and the rotation of the oscillating body are integrated, the rotatable angular range of the wheel can be reliably defined. Therefore, the operation for reciprocating the child-care chair as described above becomes easier, and the effect of preventing the child-care chair from running on its own is further enhanced.

[0012]

【Example】

 3 and 4 are side views showing the appearance of the entire child-care chair 1 according to an embodiment of the present invention. The child-care chair 1 is height-adjustable and its seat part 2 is shown in its highest position in FIG. 3, and in its lowest position in FIG. Has been done.

The seat part 2 comprises a seat part 3 and a backrest part 4. As can be seen by comparing FIGS. 3 and 4, the backrest portion 4 can be changed in its inclination angle, that is, can be reclined. The backrest 4 can also have an intermediate inclination angle between the state shown in FIG. 3 and the state shown in FIG.

Side walls 5 are located on both sides of the seat portion 3. A footrest 6 is provided so as to extend downward from the front end of the seat portion 3.

The seat part 2 is supported by a plurality of leg members, namely a first leg member 7 and a second leg member 8. The leg members 7 and 8 are arranged symmetrically one by one on the left and right. The upper end of the first leg member 7 is rotatably attached via a pin 10 to a bracket 9 provided at the rear end of the side wall 5. Further, the upper end of the second leg member 8 is rotatably attached via a pin 12 to a slider 11 provided on the side portion of the seat portion 3 so as to be slidable in the front-rear direction. Further, the first and second leg members 7 and 8 are rotatably connected to each other via a pin 13 at their intermediate portions.

In such a configuration, the height of the seat portion 2 is changed in accordance with the sliding operation of the slider 11, as shown in FIGS. 3 and 4, for example. Since such a mechanism is not directly related to the gist of the present invention, its detailed description is omitted. The invention can be applied to a child-care chair that does not have a height adjusting function.

Rotatable wheels 14 and 15 are attached to the lower ends of the first and second leg members 7 and 8, respectively. The features characteristic of the present invention are adopted in connection with the second leg member 8 and the wheel 15. 1 and 2 show an enlarged structure of the vicinity of the lower end portion of the second leg member 8. Here, FIG. 1 is a sectional view taken along line I-I of FIG. 2, and FIG. 2 is a top view of the leg member 8.

Around the axle 16 of the wheel 15, a plurality of ribs 17 fixed to the wheel 15 and extending in the radial direction are formed. Further, an oscillating body 18 is provided so as to be rotatable with respect to the axle 16. The rocking body 18 includes a case portion 19 that receives the rib 17 described above, a bracket portion 20 that extends from the case portion 19, and a tubular portion 21.

An engagement body 22 is held by the tubular portion 21 so as to be movable between a position shown by a solid line and a position shown by an imaginary line in FIG. The movement range of the engagement body 22 is defined by the stopper 23 provided therein being received in the longitudinal guide hole 24 provided in the tubular portion 21. Further, the engagement body 22 is shown by the solid line described above by the engagement protrusion 25 provided therein engaging with any one of the two engagement holes 26 and 27 provided in the tubular portion 21. It is stably held at either the position or the position indicated by the imaginary line. An operating portion 28 is provided at the end of the engaging body 22 exposed from the tubular portion 21, and an engaging portion 29 that engages with the rib 17 is provided at the other end. As shown by the solid line in FIG. 1, when the engaging portion 29 engages with the rib 17, the rotation of the wheel 15 and the rotation of the rocking body 18 are integrated. On the other hand, as shown by the imaginary line, when the engagement portion 29 is separated from the rib 17, the wheel 15 can be rotated independently of the rocking body 18.

A pin 30 is attached to the bracket portion 20 of the oscillating body 18, while a pin 31 is attached to the leg member 8. An elastic body 32 formed of, for example, a coil spring is connected between the pin 30 and the pin 31.

Further, one end of the long connecting link 33 made of a rigid body is rotatably connected to the rocking body 18 via the pin 30. The other end of the connecting link 33 is rotatably connected to the leg member 8 via the pin 31. In this embodiment, a combination of an elongated hole 34 extending in the longitudinal direction of the connecting link 33 and a pin 31 received in the elongated hole 34 is adopted in the connecting portion of the connecting link 33 and the leg member 8. It should be noted that such a configuration may be adopted at the connecting portion between the connecting link 33 and the rocking body 18 or at both end portions of the connecting link 33.

Hereinafter, mainly with reference to FIGS. 1 and 2, an operation method and an operation of the child-care chair 1 will be described.

As shown by an imaginary line in FIG. 1, when the engagement body 22 is pulled up, the engagement protrusion 25 engages with the engagement hole 27 on the upper side, and the state is stably maintained. At the same time, the engaging portion 29 is separated from the rib 17, so that the wheel 15 can freely rotate. Therefore, in this state, the child-care chair 1 can be easily moved to any place.

On the other hand, as shown by the solid line in FIG. 1, when the engaging body 22 is pushed in via the operating portion 28, the engaging projection 25 engages with the lower engaging hole 26, and the state is stable. The rotation of the wheel 15 and the rotation of the rocking body 18 are integrated with each other by the engagement portion 29 engaging with the rib 17. In this state, when the wheel 15 rotates, the oscillating body 18 also rotates, and as a result, the connecting link 33 rotates about the pin 31 as shown by an imaginary line in FIG. The pin 31 is translated by a length that allows the pin 31 to move within the slot 34. Therefore, due to the action of the connecting link 33, the rotatable angular range of the oscillating body 18 and the wheel 15 is surely limited within a predetermined range. Further, the elasticity exerted by the elastic body 32 acts on the rotation of the rocking body 18 and the wheel 15 described above. That is, no matter which direction is rotated about a certain angle, a force that increases as each rotation angle increases is exerted on the oscillating body 18 and the wheel 15 in a direction opposite to the rotation direction. Therefore, in this state, since the baby is naturally invited to sleep, it is possible to easily control the reciprocating movement of the child-care chair 1 back and forth. Further, in this state, since the wheels 15 can rotate only within a predetermined angle range, the child-care chair 1 can be prevented from self-propelled.

Although the present invention has been described above with reference to the illustrated embodiment, other modifications are possible within the scope of the present invention.

For example, the rocking body 18, the engaging body 22, and the elastic body 32, which are characteristic features of the present invention, are provided in association with the second leg member 8. It may be provided on both of the leg members 8 or on one of them. Further, such a characteristic configuration may be provided in association with the first leg member 7, or may be provided in association with both the first and second leg members 7 and 8.

Further, the structure of the engaging body 22 itself for selectively integrating the rotation of the wheel 15 and the rotation of the oscillating body 18 and the holding structure thereof are not limited to those shown in the drawings. As long as the rotation of the wheel and the rotation of the oscillating body can be selectively integrated, the structure of the engaging body itself and its holding structure can be arbitrarily changed. For example, the engaging body is prepared as a separate part that can be handled independently of the wheel and the rocking body, and such an engaging body is engaged with both a part of the wheel and a part of the rocking body to rotate the wheel. The rotation of the oscillating body may be integrated.

[Brief description of drawings]

1 is an enlarged view showing a lower end portion of a leg member 8 included in a child-care chair according to an embodiment of the present invention, and is a line II of FIG.
FIG.

FIG. 2 is a top view of the portion shown in FIG.

FIG. 3 is a side view of the entire child-care chair 1 including the leg members 8 shown in FIGS. 1 and 2, showing a state in which the seat portion 2 is brought to the highest position.

4 is a side view showing the child-care chair 1 shown in FIG. 3,
The seat part 2 is shown in the lowest position.

[Explanation of symbols]

 1 Child-rearing chair 2 Seat portion 7,8 Leg member 14,15 Wheel 16 Axle 17 Rib 18 Swing body 22 Engagement body 32 Elastic body 33 Connection link 34 Long hole

Claims (2)

[Scope of utility model registration request] 1. A child-care chair comprising a seat portion and a plurality of leg members for supporting the seat portion, wherein a rotatable wheel is attached to each lower end portion of the leg member, and an axle of the wheel. An oscillating body rotatably provided with respect to each other, an engagement body for selectively integrating the rotation of the wheel and the rotation of the oscillating body, a point on the oscillating body, and a point on the leg member. A child-care chair, comprising: an elastic body connected between the two. 2. A longitudinal connecting link made of a rigid body, one end of which is rotatably connected to the oscillating body, and the other end of which is rotatably connected to the leg member, the one end of the connecting link being further provided. The childcare chair according to claim 1, wherein the connecting portion at at least one of the other end is constituted by a combination of an elongated hole extending in the longitudinal direction of the connecting link and a pin received in the elongated hole.