JPS6238439Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a foldable stroller.

An object of the present invention is to provide a folding stroller which has a simple folding means and whose backrest can be tilted in multiple stages by reclining the stroller.

Another object of the present invention is to provide a folding stroller that can prevent an infant from falling out of the stroller even when the back rest is tilted to a bed-like position by fully reclining. It is something.

Furthermore, another object of the present invention is to provide a folding stroller equipped with a guard to prevent an infant from falling to the front when sitting on the floor, and which can be folded freely with the guard attached. This is what we are trying to provide.

Embodiments of the present invention will be described below with reference to the drawings. The stroller of the present invention has a frame consisting of a push rod 1, a seat frame 2, an armrest 3, a front leg lever 4 and a rear leg lever 5, and two links 6, 7 and a step 8 are passed through these frames to complete the whole structure. It consists of

The upper end portions of both the front leg lever 4 and the rear leg lever 5 are pivotally mounted near the tip of the armrest 3. The push rod 1 is formed into an inverted U shape, and the lower end is shaped like a "ku".
It is pivotally connected to the middle part of the rear leg rod 5 via a letter-shaped bracket 9, and its slightly upper part is pivotally connected to the rear end of the armrest 3. Reference numeral 10 denotes a back support frame provided at the rear of the push rod 1 so as to be freely undulating, and the lower end of the frame body formed in an inverted U shape is pivotally connected to a bracket 11 attached to the push rod 1. 1
Reference numeral 2 denotes an inclination angle adjustment plate attached to the back support frame 10, and a sliding guide groove 1 is provided along the length of the plate.
2a includes an arm rod 1 whose base end is pivotally connected to the hand rod 1.
A locking pin 13a provided at the tip of 3 is slidably locked. 12b, 12b are sliding guide grooves 12a
This is a locking groove cut out at a predetermined interval above the locking pin 13a, and the inclination angle of the back support frame 10 is adjusted by locking the locking pin 13a. 14
14 is an engagement/release operation plate for the locking pin 13a, and a long plate-like body is attached to the back support frame 10 so as to be located on the lower surface of the inclination angle adjustment plate 12.
Reference character a denotes an operating claw piece formed at the end of the engagement/release operating plate 14, and only this operating claw piece 14a projects outward from the inclination angle adjusting plate 12. 15
is a cover of the inclination angle adjustment plate 12, which is made of synthetic resin or the like, and has an end face L on one side thereof.
Side protector 1
5' is integrally formed. The cover 15 has the sliding guide groove 12a and the locking grooves 12b, 12.
Recessed portions 15a and 15b corresponding to portions b are formed. In principle, both ends of the inclination angle adjustment plate 12 are fixed to the back support frame 10, but when a cover 15 is used, the cover 15 is fixed to the back support frame 10, and the inclination angle adjustment plate 12 is fixed to the back support frame 10. It can also be attached to. The canvas C on which the infant is seated is formed using a piece of long and thin cloth, and its lower half is the seat floor C1 and the upper half is the backrest C.
2, both sides near the tip of the seat floor part C1 are attached to the seat floor frames 2, 2, and both sides near the upper end of the backrest part C2 are attached to both sides near the top of the backrest frame 10. In addition, the backrest part C2 is designed so that it can be bent into an L-shape on the side near the upper end.
The upper part of the character shape is a head frame C3. Note that shape-retaining core plates C21 and C31 are inserted into the back support portion C2 and the head frame C3, respectively. 16
is a head frame forming tool. This head frame forming tool 16 is composed of a base frame 16 to which a locking rod 16a is slidably attached, and a receiving frame 16c in which the tip of the locking rod 16a can be engaged.
b is attached to the upper edge of the backrest portion C2, and the receiving frame 16c is attached to the lower edge of the head frame C3.
Reference numeral 17 denotes a holder for the back support frame 10, and a frame body having a shape with a curved side surface is attached to the back support of the head frame C3, and the upper end side of the back support frame 10 is inserted into this curve-shaped gap. The shape-retaining core plates C21 and C31 are particularly effective for attaching and fixing the head frame forming tool 16 and the holder 17. Reference numeral 17a denotes engagement rings for preventing sinking, which are provided on both sides of the back surface of the intermediate portion in the length direction of the canvas C (the boundary between the seat floor portion C1 and the backrest portion C2), and are located near the rear end of the armrest 3. It is engaged with a locking hook 17b suspended from the holder. Note that the engagement ring 17a,
It is desirable to sew or abut and attach a reinforcing belt-like fabric to the back surface of the canvas where the 17a is to be provided, so as to extend over the engagement rings 17a, 17a. Reference numeral 18 denotes a guard frame detachably and foldably attached to the tip of the armrest 3. This guard frame 18 includes the armrest 3,
By dividing the frame with a length that can be passed between the two into approximately three equal parts, and pivoting it at the positions of the three equal parts, it can be folded into a U-shape in plan. An insertion leg rod 19 is attached via a guide joint 18a that can be undulated and swung only in the length direction of the guard frame, and a holder 18b rotatably pivoted to the tip of this guide joint. . Reference numeral 31 denotes a sliding groove of the insertion leg rod 19, which is split from near the tip of the upper side of the armrest 3 to the end face thereof. The insertion leg rods 19 provided at both ends of the guard frame 18 are removably engaged with a bracket 20 pivotably pivoted inside the tip of the armrest 3. It is designed to perform rocking accordingly. Reference numeral 19a is a locking recess formed near the lower end of the insertion leg rod 19, and the bracket 20
It removably engages with a locking pawl 20a that is swingably provided on the holder. 20b and 20c are claws for raising and lowering that are protruded from the lower end of the bracket 20, and engage with an actuating pin 41 that is protruded near the upper end of the front leg lever 4, so that the front leg lever 4 can move in the direction of the rear leg lever 5 for folding. When it is tilted, the actuating pin 41 pushes the claw 20c and tilts the entire bracket 20 toward the end surface of the armrest 3 (accordingly, the insertion leg rod 19 also tilts forward, so the guard frame 18 also moves toward the end surface of the armrest 3). ) Conversely, when the front leg lever 4 is raised during use, the operating pin 41 pushes the claw 20b of the bracket, and the entire bracket 20 operates in the opposite manner to the above, so that the guard frame 18 is positioned above the armrest 3. Numerals 21 and 22 are hooks for keeping the stroller folded, and are attached to the tips of the seat frames 2 and 2, respectively. One of these hooks has a locking hook piece 21, and the other side has a locking ring piece 22 that locks this hook piece.
It is a so-called ``retractable'' hook that automatically engages when the two come into contact when the frame is folded, and requires manual operation only when releasing the engagement. . The hand lever 1, the back support frame 10, the two links 6 and 7, and the step 8 can all be folded into a U-shape in plan, similar to the guard frame 18.

The present invention configured as described above can have the following effects.

() Back support mechanism ○A Back support frame 10 formed at the rear of the push rod 1
Since the angle can be freely adjusted using the arm rod 13 and the tilt angle adjusting plate 12, the appropriate tilt angle can be freely and instantaneously adjusted according to the infant's age.

○B Also, the canvas C has a seat part C1 and a backrest part C.
Engagement ring 1 to prevent immersion on the back side of the boundary with 2
A locking hook 17b is provided with 7a and 17a and is suspended from near the rear end of the armrest 3,
17b, so that when the canvas C becomes flat due to a full reclining operation, the lumbar support part, where the infant's weight is most applied, is prevented from sinking downward, and a proper sleeping position is maintained. can be maintained.

○C Since conventional strollers only require a normal seating position and a so-called "reclining" position tilted slightly backwards, infants can be prevented from falling from the stroller by using a guard frame in the front direction and by using a guard frame on both sides. In the plane direction, it was possible to sufficiently achieve the purpose by using side protectors, but in this invention, the canvas C can be reclined to a full flat position in a straight line, so in this case, the infant lying flat can be reclined in the head direction. In order to prevent the canvas C from slipping and falling, a head frame C3 is further connected to the upper end of the backrest C2 of the canvas C, and these can be easily formed using the head frame forming tool 16, thereby creating a fully flat canvas C. The infant sleeping on top is prevented from moving upward by the head frame C3 and is therefore safe.

() Guard frame mechanism ○B The guard frame 18 detachably attached to the tip of the armrest 3 is attached to the armrest 3 via the insertion leg rods 19 attached to both ends of the guard frame 18. Since the bracket 20 that holds the insertion leg rod 19 is pivoted so as to be able to swing freely, the guard frame 18 moves from the top surface of the tip of the armrest 3 to the end surface (so-called gable side) as the stroller body is folded. After the stroller is moved, it can be folded into a U-shape, and there is no inconvenience such as having to remove the guard frame 18 one by one when folding the stroller.

○B The insertion leg rod 19 attached to the end of the guard frame 18 is attached via the guide joint 18a that can only be raised and lowered outward along the length direction of the guide frame 18, so the guard frame The angle formed between the guard frame 18 and the insertion leg rod 19 is variable, so that the guard frame 18 can be smoothly bent during folding.

() Folding maintenance mechanism Folding maintenance hooks consisting of a locking hook piece 21 and a locking ring piece 22 that locks this locking hook piece 21 are attached to the tips of the seat frames 2, 2, and these Since the hook has a so-called "easy-to-insert" mechanism, it can automatically engage in response to the folding operation of the stroller and stably maintain the folded state.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 is a perspective view of the backrest frame when it is folded down, and Fig. 2 is a perspective view of the backrest frame.
FIG. 3 is a side view showing an example of adjusting the inclination angle of the back support frame and an example of forming the head frame; FIG. 4 is a front view; Fig. 5 is a rear view, Fig. 6 is an enlarged perspective view showing an example of forming a head frame, Fig. 7 is a perspective view showing the combination of a shape-retaining core plate and a head frame forming tool, and Fig. 8 is Side view of the inclination angle adjustment section, No. 9
The figure is a cross-sectional view taken along line A-A in Figure 8, Figure 10 is a cross-sectional view taken along line B-B in Figure 8, Figure 11 is an exploded perspective view of Figure 8, and Figure 12 is a cross-sectional view of the guard frame and armrest. FIG. 13 is an enlarged perspective view showing the locking part, FIG. 13 is a vertical side view of FIG. 12, FIG. 14 is an exploded perspective view of FIG. 12, and FIG.
Figure 5 is a rear view showing the immersion prevention part of the canvas, Figure 16 is an overall perspective view of the stroller in the folded state, Figure 17 is a partial front view showing the hook for maintaining folding, and Figure 18 is a plan view of the same figure. It is a diagram. 1... Hand lever, 2... Seat frame, 3... Armrest, 4... Front leg lever, 5... Rear leg lever, 6, 7...
...link, 8...step, 10...back frame,
11...Bracket, 12...Inclination angle adjustment plate,
13...Arm rod, 14...Lock pin engagement/release operation plate, 15...Cover, 15'...Side protector, 16...Head frame forming tool, 17...Backrest frame holder, 18... Guard frame, 18a... Guide joint, 19... Insertion leg rod, 20...
Bracket, 21...Latching hook piece, 22...Latching ring piece, C...Canvas, C1...Seat floor part, C2...
...Backrest, C3...Head frame.

Claims (1)

[Scope of Claim for Utility Model Registration] A frame is constituted by a push rod 1, a seat frame 2, an armrest 3, and a front leg lever 4 and a rear leg lever 5 having wheels at their lower ends, and two foldable links are attached to the frame. In the stroller constructed by connecting the steps 6, 7 and the step 8, (i) the proximal end is attached to the back of the push rod 1 with the bracket 1;
1, an inverted U-shaped back support frame 10 is attached to the back support frame 10, and the back support frame 10 is attached so as to be freely undulating through an arm rod 13 and an inclination angle adjustment plate 12, and the inclination angle adjustment plate 12 is covered with a synthetic resin cover 15 integrally formed with a side protector 15'. (ii) At the tip of the armrest 3, there is a guide joint 18a that can be folded into a U-shape in plan, and that can swing up and down only outward. A guard frame 18 with an insertion leg rod 19 rotatably attached to the tip of the inlet 18a via a cradle 18b is attached so as to be detachable and swingable toward the tip of the armrest 3. What I did. (iii) The canvas C, in which the seat floor part C1 is stretched across the seat frame 2, 2 and the back rest part C2 is stretched across the back rest frame 10, is further connected and integrated with the head frame C3 at the upper end of the back rest part C2. The back support part C2 and the head frame C3 each have a base frame 16b to which a locking rod 16a attached to the back surface is slidably attached, and a receiving frame 16c with which the locking rod 16a can be engaged.
It can be operated by a head frame forming tool 16 consisting of. (iv) Seat frame 2, 2 connected to two front leg rods 4, 4
A hook for maintaining folding is attached to the tip of the folding device, with one side being a locking hook piece 21 and the other side being a locking ring piece 22 for locking the locking hook piece. A folding stroller consisting of