JPH0447021Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a protective frame for a stroller intended to prevent an infant seated on the seat from falling off the seat.

The purpose of this invention is to ensure that the protective frame does not interfere with the seating operation when an infant is placed on the seat, and that the infant can be safely protected by the protective frame after the infant is seated. The aim is to provide a protective frame for baby strollers.

In order to prevent an infant seated in a stroller from falling off the seat floor, it has been well known that a protective frame called a guard is attached to the front of the infant. A mechanism for achieving this is also known as described in Japanese Utility Model Application Publication No. 49-39153.

However, in the case of a conventionally known structure, the protective frame is placed on the front side of the seat on which the infant is seated, particularly on the armrests that are formed to stand up on both sides of the infant's body. Most of the seats were fixed by tying the ends of the armrests, so when seating a child on the seat, it was necessary to tie the ends of the armrests and It is necessary to take the infant in and out from the upper surface of the area surrounded by the protective frame, which has the drawback that the operation for seating the infant is inconvenient.

In addition, in the case of the structure known from the above-mentioned public gazette, the mechanism for restraining the infant's body is a flat U-shaped frame that can serve as a handrail rod and a protective frame rod. It has an extremely complex structure because it is composed of handrail rods, and when in use, the handrail frame must be slid (lifted) or one end of the handrail frame that has been slid. It has been pointed out that the disadvantage is that it requires a complicated operation, such as having to remove the infant while rotating the device as an axis.

Furthermore, in the case of the above-mentioned known structure, there is an attachment part (latching tool) between the U-shaped frame rod that also serves as a protective frame and the back frame rod, and a part that allows the frame rod to freely rotate with respect to the back frame rod. Since all the parts attached to the stroller are exposed to the outside, it has been pointed out that there is a risk that the fingertips of an infant seated in the stroller could touch these exposed parts and damage the fingertips.

The present invention attempts to address these problems, and has been able to completely achieve its purpose by completing the invention described below.

Embodiments of the present invention will be described below with reference to the drawings.

The main body of the stroller, generally designated by A, is a known one, in which a front leg lever 1, a rear leg lever 2, a push lever 3, and an armrest lever 4 are connected and integrated by connecting horizontal bars 5...5, and the front leg lever 1. It is constructed so that it can be folded by reducing the distance between the two parts of the rear leg lever.

Reference numeral 6 denotes a protective frame attached so as to span the tips of the two armrest rods 4, 4 located on both sides of the seat floor. The coupler 8 part formed at the other end part is attached to the end part of the other armrest rod 4 and can be freely attached to and removed from the locking protrusion 9 formed therein. It is attached as follows.

The locking protrusion 9 is formed using a metal rod having an appropriate length and diameter, as illustrated in FIG. A locking groove 91 is formed in an annular shape, and when the coupler 8 is fitted into the coupler 8, a holding protrusion 84 formed inside the coupler 8 fits into the locking groove 91 and is locked.

The coupler 8 is formed at the tip of the core body 61 constituting the protective frame 6, and is connected to a locking cylinder 81 having an inner diameter into which the locking protrusion 9 described above can be inserted and fitted. Fixed frame 82 surrounding tube 81
and a movable frame 83 slidably attached to the tip of the fixed frame 82.

The locking tube 81 is constructed using a cylindrical body having an inner diameter and length large enough to allow the locking protrusion 9 to be inserted and fitted therein.

The holding protrusion 84 is formed using a metal ball or the like with a small outer diameter, and is attached to the tip of the resilient plate 85 with the protruding part serving as the locking part facing inward. This protruding portion is always urged inward through a through-hole portion provided at the tip of the locking tube 81.

The movable frame 83 is attached to the tip of the fixed frame 82 so that it can slide freely, and is always pushed forward (in the direction of the end surface of the protective frame 6) by the force of the spring 86. Forced.

The movable frame 83 has an inner diameter large enough to fit the locking cylinder 81 in its center, and has an inner diameter large enough only at the exit portion to allow the holding protrusion 84 to retreat. It is formed as a shaped hole 87.

It goes without saying that the movable frame 83, which is slidably attached to the front surface of the fixed frame 82, does not come off the fixed frame 82 even if it is pushed out by the force of the spring 86.

In addition, the entire protective frame 6 is formed by a core body 61 having flexibility.
The structure is such that a cushioning material having appropriate elasticity is wrapped around the outer periphery of the material, and then the entire material is protected with a synthetic resin film such as vinyl.

The present invention configured as described above is used in the following manner.

First, when seating the infant, the engagement between the coupler 8 formed at one end of the protective frame 6 and the locking protrusion 9 provided on the armrest rod 4 is released, and the protective frame 6
When the stroller is moved to the position shown by the dotted line in Figure 1, the front of the seat becomes completely open, making it possible to seat an infant as easily as in a stroller without a protective frame. can.

Note that the protective frame 6 can be opened by releasing the engagement between the coupler 8 formed at the tip of the protective frame 6 and the locking protrusion 9 formed at the tip of the armrest rod 4. However, the operation for opening this is to resist the force of the spring 86 by moving the movable frame 83, which is slidably formed at the tip of the coupler 8, which is in the state illustrated in FIG. This is done by pressing down towards the fixed frame while

In this way, the position of the holding protrusion 84, which is located inside the movable frame 83 and is biased toward the inside of the locking cylinder 81 from the cylindrical hole 87 formed in the locking cylinder 81, is movable. It is substantially moved to a portion having a larger inner diameter formed toward the tip of the inner side of the frame 83.

The holding protrusion 84, which has been moved to the larger inner diameter part, can freely come out and go out from the cylindrical hole 87 part by forming a space for retreating in the rear part of the holding protrusion 84. When the frame 6 is pulled out, the holding protrusion 84, which was fitted into the locking groove 91 formed at the tip of the locking protrusion 9, is easily released, and the engagement between the two is released. It becomes possible to release the stop.

In addition, the engagement between the two is performed by the opposite operation to the above, that is, by inserting the locking protrusion 9 into the locking tube 81 protruding from the center of the movable frame 83 while moving the movable frame 83 toward the fixed frame 82. Next, when this push-down is released, the movable frame 83 returns to its original position, making it possible to easily and firmly maintain the fixation of both.

The features of the present invention configured as described above are as follows.

(1) The base end of the protection frame 6 is pivotally attached to the tip of one armrest rod 4 via the pivot 7, and one end (tip) of the protection frame 6 is attached to the tip of the armrest rod 4. Since it is structured so that it can be opened freely, it is extremely easy to operate to take the infant in and out, completely eliminating the drawbacks of conventional strollers with protective frames that are complicated to operate. There are effects that can be removed.

(2) In addition, in the present invention, the protective frame 6 is not completely removed from the armrest rod 4, but only one end (tip) thereof is opened and swung, so the protective frame 6 when opened is It has the excellent feature that it is not only easy to manage, but also that the engagement operation between the coupler 8 and the locking protrusion 9 can be easily performed with one hand.

(3) Furthermore, in the present invention, the protective frame 6 is connected to the armrest rod 4,
4 parts, the locking part between the tip of the protective frame and the armrest rod 4 (the locking part with the locking protrusion 9), and the locking part between the proximal end of the protective frame and the other armrest rod. Pivot joint with the tip of (pivot joint via pivot 7)
Since it is constructed so that the parts are not exposed to the outside, the attachment part between the handrail frame and the back frame rod (the pivoting part at the base end of the handrail frame or the locking groove at the tip part) is If the locking part) is exposed, accidents such as damage to the fingertips of infants due to their fingertips being caught in the exposed part can be prevented, which provides extremely high safety. .

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 is a perspective view of the stroller with the protective frame attached, and Fig. 2 is an enlarged view showing the engagement portion between the protective frame and the locking protrusion. 3 is an enlarged sectional view showing a state in which the locking protrusion is removed from the protective frame, and FIG. 4 is a perspective view showing the operation of fitting the coupler to the locking protrusion. A...Stroller body, 4...Armrest rod, 6...
...Protection frame, 61 ... Core body, 7 ... Pivot, 8 ... Coupler, 81 ... Locking cylinder, 82 ... Fixed frame, 83
...Movable frame, 84...Holding protrusion, 85...Plate, 8
6... Spring, 87... Cylindrical hole, 9... Locking protrusion, 91... Locking groove.

Claims (1)

[Scope of utility model registration request] Two armrest rods 4, 4 located on both sides of the seat floor
A protective frame 6 is attached so as to span over the tip of the armrest rod 4, and the base end of the protective frame 6 is pivotally attached to the tip of one of the armrest rods 4 via a pivot 7, and the protective frame 6 In the protective frame of the stroller, a coupler mechanism 8 is formed at the tip of the armrest rod 4 for removably fitting a locking protrusion 9 pivotably pivoted to the tip of the other armrest rod 4. , the locking protrusion 9 has a structure in which an annular locking groove 91 is formed along the circumferential direction near the tip of a metal rod of an appropriate length, and the coupler mechanism 8 constitutes the protective frame 6. At the tip of the core body 61, a holding protrusion made of a sphere is attached to the tip of a plate 85, which has an inner diameter into which the locking protrusion 9 can be inserted and fitted, and has an elastic force in a through hole provided at the tip. A locking tube 81 is attached so that a part of the locking tube 84 projects inward, and a fixed frame 8 is attached to the outer periphery of the locking tube 81 surrounding the locking tube 81.
2 is attached, and a movable frame 83 is slidably attached to the tip of the fixed frame 82, which is always pushed in the forward direction by the force of the spring 86. A protective frame for a stroller formed with a cylindrical hole 87 having an inner diameter that contacts and presses the back surface of a holding protrusion 84 when the frame slides.