JPH0634562U - Infant chair reclining mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] A reclining mechanism for a baby chair constructed so that the reclining operation of the back rest portion standing upright at the rear end of the seat can be performed safely and easily. [Structure] A back rest portion is erected at the rear end of the seat portion, and an upper end of a U-shaped bearing rod that is erected from the rear end of the seat portion is engaged with a locking step portion formed on the back surface of the back rest portion. The support rod is configured to be detachably locked, and the upper end portion of the support rod is slidably fitted to the sliding groove on the side surface of the undulating operation body pivotally attached to the back surface of the back support portion. [Effect] The engaging / disengaging operation of the support rod can be safely and easily performed only by performing the elevating operation of the elevating operation body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair for infants, and more particularly to a chair for infants configured so that the backrest can recline.

[0002]

[Prior art]

 An infant chair with a reclining mechanism, in which the lower end of the back rest is pivotally attached to the rear end of the seat so that the tilt angle of the raised back rest can be freely changed, is disclosed in Japanese Utility Model Publication No. 4-4598. (Especially FIG. 1 thereof) and the like, and the use of the same function in a baby car is also known from the description of Japanese Utility Model Laid-Open No. 63-34676.

[0003]

[Problems to be solved by the device]

 However, the reclining mechanism that has been known so far is that the supporting rod is passed across the back of the back rest to the armrests standing up from both sides of the seat, and the back of the back rest is supported by this bearing rod, and the armrest is supported. The tilting angle of the back rest can be changed by moving the mounting position of the supporting rod to the vertical direction (see, for example, Japanese Utility Model Laid-Open No. 4-4598), or in the middle of the hand-pushed rod. Both ends of the tilt angle adjusting rod formed in the shape of a bar are pivotally attached, and the horizontal rod portion of the tilt angle adjusting rod is selectively locked to the locking step formed on the back of the back support part by a step. Since it has a structure that adjusts the inclination angle of the backing part (for example, see Japanese Utility Model Laid-Open No. 63-34676), it is strong against tightening adjustment of the bearing rod that is passed over the armrest part when adjusting the backing part inclination angle. Power and annoyance Since the mechanism for adjusting the tilt angle is exposed to the outside of the infant chair, the user's or infant's fingertips may not be able to operate between the support rod and the back of the backrest. It has the disadvantage of being easily pinched between the locking step and being injured.

[0004]

[Purpose of the Invention] The present invention has been made in view of the above circumstances and intends to cope with the situation. The operation for reclining is extremely easy, and moreover, an extremely safe mechanism in which all mechanical parts that are easily injured are shielded from the outside. The purpose is to provide a highly effective reclining mechanism for a baby chair.

[0005]

[Key points of the device]

 According to the present invention, the lower end of the backrest is pivotally attached to the rear end of the seat, and the horizontal portion of the front U-shaped support rod that is erected from the rear end of the seat and the back of the backrest. In an infant chair configured to change the reclining angle of the backrest by changing the contact position with the formed locking step, the horizontal part of the support rod is formed in a shallow box shape, The key point of the invention is the reclining mechanism for the infant chair, which is slidably inserted into the longitudinally formed sliding grooves on both side surfaces of the undulating operation body whose lower end is pivotally attached to the back of the backrest. .

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the embodiment, an example in which the chair body A and the leg portion B are separable is shown, but the structure is not limited to this.

In the illustrated leg portion B, the intermediate portion of the front leg rod 1 and the rear leg rod 2 crosses in an X shape and is pivotally attached, and the upper end portion of the rear leg rod 2 is fixed to the support body 3 of the leg portion B. Then, the upper end of the front leg rod 1 is pivotally attached to the rear end of the sliding body 31 slidably attached to the support body 3 of the leg B, and the X-shaped body of the leg B (open leg state) is changed. The height can be freely adjusted by doing so, and the inverted U-shaped swing arms 4 and 4 suspended swingably between two facing supports 3 and 3 are seated on the chair body A. The lower surface of the part is detachably attached.

In the chair body A, the lower end of the back support part 6 is pivotally attached to the rear end of the seat part 5 on which the armrest parts 51, 51 are erected on both sides, and the chair main body A is erected from the rear end part of the seat part 5. The reclining angle of the back support portion 6 can be changed by changing the contact position between the supporting rod 7 and the back surface of the back support portion 6.

Reference numeral 8 denotes an engaging portion of the supporting rod 7. The engaging portion 8 of the supporting rod 7 is formed on the back surface of the back support portion 6 in a vertically long manner in two rows. 81 ... 81 are formed in multiple stages, and the inclination angle (reclining angle) of the back support portion 6 is changed by changing the fitting portion between the locking step portion 81 and the support rod 7.

Reference numeral 9 denotes an elevating and lowering operation body of the support rod 7. The upper and lower end portions (both ends of the horizontal portion) of the support rod 7 are provided in sliding grooves 91, 91 vertically formed on both side wall surfaces of the operation body formed in a shallow box shape. Part) is slidably fitted, and its base end part is pivotally attached near the lower back part of the back support part 6 via a pivot 62.

The undulating operation body 9 formed in the shape of a shallow box has an opening facing the backrest portion 6 and a lower end thereof pivoted near the lower end portion of the backrest portion 6. The part is configured so that it can be inclined toward the back surface of the back support part 6 by a certain angle.

Reference numeral 93 is a pressing spring for pressing the undulating operation body 9 toward the back surface of the back support portion 6. The tip of the pressing spring 93 contacts the lower surface of the screw head of the locking screw 62 attached to the tip of the bearing protrusion 61 that projects from the back surface of the back support portion 6 into the fitting insertion hole 94 of the undulating operation body 6. The undulation operating body 9 is always pressed in the direction of the back support portion 6 by contacting the lower end portion with the flange portion of the fitting insertion hole 94.

Reference numeral 95 denotes a finger hook portion formed on the upper rear surface of the undulating operation body 9, and the upper end portion of the undulating operation body 9 is tilted rearward by engaging and pulling a fingertip on this portion.

Reference numeral 10 denotes a stopper of the up-and-down operation body 9, and a base end portion of the stopper 10 is rotatably and pivotally attached to the back support portion 6 near an upper rear end portion thereof.

Reference numeral 11 is a head support plate for an infant that is attached to the upper end of the back support portion 6 so as to be capable of undulating. The tip ends of the undulating operation links 12 and 12 extending from both sides are formed on the side surface of the undulating operation plate 9. Fitted in the sliding grooves 91, 91.

The up-and-down operation link 12 fitted in the sliding groove 91 is pushed up by the upper end portion of the supporting rod 7 when the supporting rod 7 of the back support portion 6 slides in the upper direction of the sliding groove 91, and In conjunction with this, the head support plate 11 falls toward the inside of the back support portion 6 and operates so as to support the infant's head from above. (Refer to the chain double-dashed line in FIG. 6)

[0018]

[Operation of the device]

 When reclining the backrest 6, the stopper 11 that is locked to the upper end of the undulation operating body 9 is released, and the upper end of the undulating operating body 9 is moved backward while the fingertips 95 are being hooked. cause.

The supporting rod 7 that supports the back surface of the back support portion 6 has its horizontal rod portions fitted into the sliding grooves 91, 91 formed on both sides of the undulating operation body 9, so that the undulating operation body 9 When the upper end of the support rod 6 is tilted outward from the back surface of the backrest part 6, the upper end of the support rod 7 is also raised outward in association with the movement of the back support part 6 and the locking formed on the support rod 7 and the locking part 8 The engagement with the stepped portion 81 is released.

In this state, the backrest 6 is erected in either the upright direction or the laid down direction to select a desired reclining angle, and in that state, the undulating operation body 9 is lifted to release it from the supporting rod 7. The locking step portion 81 is locked again and the reclining angle can be adjusted.

[0021]

[Effect of device]

 Since the present invention is configured as described above, the locking with the support rod 7 is very easily released only by performing an operation of pulling the upper end portion of the undulating operation body 9 to the outside, and in this state, the back support portion 6 is released. Changing the tilt angle has the excellent effect of instantly adjusting the reclining angle.

Further, in the present invention, all of the supporting rod 7 for adjusting the tilt angle and the locking portion 8 for locking the upper end of the supporting rod 7 are provided inside the undulating operating body 9 formed in a shallow box shape. Since it is located and not exposed to the outside, accidents such as pinching the fingertips of the user or a child sitting on a chair in this part can be completely prevented, and the various drawbacks of the conventional structure can be completely eliminated. effective.

[Brief description of drawings]

[Figure 1] Side view of the infant chair

FIG. 2 is an exploded perspective view showing an infant chair body and legs separately from each other.

FIG. 3 is a perspective view of the infant chair seen from the back side.

FIG. 4 is an exploded perspective view of the undulating operation body.

FIG. 5 is a vertical sectional side view showing a main part.

FIG. 6 is a side view of the infant chair showing the reclining state of the backrest.

[Explanation of symbols]

 A Chair body B Leg 1 Front leg rod 2 Rear leg rod 3 Support 5 Seat floor 51 Armrest 6 Back support 61 Support projection 62 Locking screw 7 Locking rod 8 Locking step 8 Locking step 9 Lifting operation 91 Sliding groove 92 Pivot 93 Pressing spring 94 Fitting hole 95 Finger hook 10 Stopper 11 Head support plate 12 Lifting operation link

Claims (2)

[Scope of utility model registration request] 1. A lower end of a back support portion is pivotally attached to a rear end of a seat floor portion,
The reclining angle of the back rest part is changed by changing the contact position between the horizontal part of the front U-shaped support rod standing upright from the rear end of the seat part and the locking step formed on the back face of the back rest part. In the infant chair configured to change the above, the horizontal portion of the supporting rod is formed in a shallow box shape, and the lower end portion thereof is vertically long on both side surfaces of the undulating operation body pivotally attached to the back surface of the back support portion. A reclining mechanism for a baby chair that is slidably inserted into the formed sliding groove. 2. A reclining mechanism for a baby chair according to claim 1, wherein a pressing spring constantly presses near a lower end portion of an undulating operation body whose lower end portion is pivotally attached to a back surface of the backrest portion toward the backrest portion. .