JPH0629147Y2 - Folding old man car - Google Patents

Description

[Detailed Description of the Invention] <Industrial field of application> The present invention relates to a folding-type elderly car that is used by hand instead of a cane. Especially, assembling strength and safety as a cane substitute are increased and shopping is performed. It has been improved so that it can be conveniently used as a cart for pulling.

<Prior Art> As a folding type old man's car that an old man uses by hand instead of a cane, for example, Japanese Utility Model Laid-Open No. 56-163068 is known, which has a front leg rod (1) and a rear leg rod (5) because of its structure. ) Is attached to the X-shape in a side view through a pair of left and right pivot pins (9), so that the bag (30) is housed and installed in the internal space and the front leg rod ( In addition to the pusher rod (11), a pull rod (23) is equipped at the upper end of 1).

<Problems to be solved by the device> However, in the case of the above-mentioned known device, since the front leg rod (1) and the rear leg rod (5) are assembled in a crossed state at the mid-height position, Even when folded and flattened to overlap, the height is still bulky.

Further, the bag (30) is stored and installed in the frame of the two leg rods (1) and (5), and when folded, the bag (30) is also forcibly folded from its mouthpiece. Therefore, various items cannot be stored and maintained without restriction, and there are still problems and inconveniences in using the pulling as a shopping cart. Since it is necessary to attach a folding movement mechanism to the mouthpiece of the bag (30), it can be said that the mass production effect is inferior.

In this respect, in the construction of the wheelbarrow described in Japanese Utility Model Publication No. 48-20753, if the handle frame (11) is turned forward and turned down by loosening the screw rod (13), the leg rod (9) becomes the main frame ( Since it is approached so as to overlap with 1), the overall height in the folded state can be said to be about half as low as shown in Figs. 3 and 4, and it can be said that it can be made compact and compact. Help solve the problem.

However, this means that the canvas sheet (14) is to be stretched inside the space between the vertical members (2) of the main frame (1) and the leg rods (9). (2) and the handle (10) of the handle frame (11), which is narrower than the two-leg rods (9), has the two-leg rods (9) from the front at the time of folding.
Is pressed so as to approach the main frame (1), the canvas sheet (14) is "folded in a folded state", and thus the above-mentioned actual opening 56-16.
Like the No. 3068, it still has some troubles and inconveniences when it is used as a shopping cart. Even if an article is temporarily stored in the canvas sheet (14), it may be pinched and crushed at the time of folding depending on the article.

Furthermore, as shown in FIG. 1, the handle frame (11) is extended from the rod (9) rearward and upward, and only the main frame (1) is overlapped with the rod (9) while keeping the assembled state. Since it is impossible to fold it into a state, pull it in the opposite direction as a shopping cart while holding the handle (10) of the handle frame (11) and without folding the canvas sheet (14). Cannot be used.

Such a problem also occurs in the wheelbarrow of Japanese Utility Model Publication No. 48-28522 in exactly the same manner. The canvas (17) is covered by the main frame (1) due to its structure.
The auxiliary frame (5), which is attached inside the space between the vertical members (2) in the above, but is narrower than the main frame (1), is folded so as to overlap and approach the main frame (1). is there.

Also, if the handle frame (12) is tilted around the fulcrum of the connecting material (10),
The auxiliary frame (5) and the main frame (1) are brought close to each other integrally with each other to be in the folded state as shown in FIGS. 4 and 6, and the handle frame (12) is set as shown in FIGS. It is impossible to fold only the auxiliary frame (5) so as to overlap with the main frame (1) while maintaining the assembled state so that the main frame (1) is extended rearward and upward. Not suitable for pulling as a cart.

<Means for Solving the Problem> The present invention intends to improve such a problem, and as a means therefor, a front wheel support leg framed in a substantially U-shape in a front view, which keeps constant intervals, and A rear wheel support leg framed in a U-shape similar to the front view that keeps a wider space than the front wheel support leg, and an almost inverted U-shape in front view that maintains a wider space than the rear wheel support leg. It is equipped with a pusher frame bent into a mold, and is a metal hollow pipe material that crushes the front wheel support leg, the rear wheel support leg, and the pusher frame, and a pair of left and right reinforcing pins are respectively implanted at the upper ends of the support legs. While fixing, a pair of left and right reinforcing pins are also implanted and integrated into the lower end of the pusher frame to align the exposed heads of the reinforcing pins in a side-by-side alignment and one pivot shaft is attached to the exposed heads. By horizontally skewering and penetrating the The rear wheel support leg and the pusher frame are rotatably assembled, and one of the exposed heads of the reinforcement pin of the front wheel support leg and the reinforcement pin of the rear wheel support leg which are in the side-by-side arrangement is adjacent to each other. 2 sets of parallel fitting protrusions are projected horizontally from each part, and the receiving concave groove of each fitting protrusion is correspondingly opened in the other exposed head portion of the other, and the projection and the concave groove By fitting, the front wheel support leg and the rear wheel support leg are determined so that they can be opened / closed relatively in the rotation angle range of 45 to 60 degrees, and the reinforcement pin and the pusher frame of the rear wheel support leg also in the side-by-side alignment state are Between adjacent ones of the reinforcing pins, another fitting protrusion is horizontally projected from one of the exposed heads, and the receiving recess groove of the fitting protrusion is correspondingly opened in the other exposed head. Then, by fitting the convex and concave grooves, the pusher frame can be used as a rear wheel support leg. In the range of the rotation angle of 225 to 240 degrees, it is determined that the hoisting operation can be performed, and the opening and closing operation state of both the support legs and the hoisting operation state of the pusher frame are fixed by being screwed to the end of the pivot shaft. It is characterized in that each nut can be locked by tightening the nut.

<Embodiment> The concrete construction of the present invention will be described in detail below with reference to the illustrated embodiment. In FIGS. 1 to 7 showing the hand-pushing use state as an elderly car, (A) is a metal hollow pipe. It is a generic term for front wheel support legs made of material, and consists of a pair of left and right leg pipes (11) that are parallel to each other with a constant spacing (W1), and a horizontal axle (12) fixed and laterally mounted on the lower end of the leg pipe. The front wheel (13) is attached to both ends of the axle (12) so as to be freely rotatable while being integrally framed in a substantially U-shape in a front view. Reference numeral (14) shows a spacer tube fitted over the axle (12) of the front wheel (13).

(15) is a pair of left and right reinforcing pins that are fixed to the front upper ends of both leg pipes (11) of the front wheel support legs (A) by opening the leg pipes (11). The head (16)
Both of the inner and outer sides are flattened, and a bearing hole (17) is opened at the center thereof.

Further, (B) is a rear wheel supporting leg of the same metal hollow pipe material, and is a pair of left and right legs parallel to each other with a constant width (W2) wider than the constant distance (W1) of the front wheel supporting leg (A). The pipe (18) and the horizontal axle (19) also fixedly mounted on the lower end of the pipe (18) form a U-shaped frame in a front view, which is almost similar to the front wheel support leg (A). A pair of left and right rear wheels (20) are attached to both ends of (19) in a freely rotatable manner. Reference numeral (21) is a spacer tube fitted over the axle (19) of the rear wheel (20).

(22) is a pair of left and right reinforcing pins that are also integrated in the upper end of the openings of both leg pipes (18) in the rear wheel support legs (B) in a covered state, and have a large head (23 ) Is also exposed from the leg tube (18), both the inner side and the outer side thereof are flattened, and a bearing hole (24) is also formed through the center thereof.

Further, (C) is a pusher frame formed by bending a hollow metal pipe material into a substantially inverted U-shape in a front view.
(W3) is set as a dimension wider than the constant interval (W2) of the rear wheel support legs (B). (25) is a pair of left and right reinforcing pins, which are also fixed to the lower end of the opening of the pusher frame (C) in a closed state, and have a large diameter exposed head (2
A bearing hole (27) is also opened at the center of 6).

Then, the reinforcement pin (15) of the front wheel support leg (A), the reinforcement pin (22) of the rear wheel support leg (B), and the reinforcement pin (2 of the pusher frame (C).
As is clear from FIGS. 7 and 8, 5) is aligned with the overall lateral position of the internal and external positional relationships and the reinforcing pin thereof.
(15) (22) (25) bearing holes (17) (24) (27) are pierced by a single horizontal pivot shaft (28) to penetrate the pivot shaft (2).
It will be assembled so that it can rotate relative to 8).

(29) is a screw engraved at both ends of the pivot shaft (28), and by tightening the screw-fastening nut (30), the rotating action is locked. Has become. In this respect, although a pair of left and right fixing nuts (30) are used in the illustrated example, by making the pivot shaft (28) into an elongated bolt shape with a head, either one of the left and right fixing nuts (30) is used. May be omitted, and as the fixing nut (30), a bag nut type, a butterfly nut type, or the like can be adopted.

Reference numeral (31) is a spacer tube fitted to the pivot shaft (28) of the front wheel support leg (A) while being interposed between the left and right reinforcing pins (15).

The reinforcing pins (15), (22) and (25) of the front wheel supporting leg (A), the rear wheel supporting leg (B) and the pusher frame (C) are arranged in a symmetrical form with each other as a pair of left and right as described above. Since it has been installed, the description will be continued for one of the left and right sides, so that the reinforcing pin for the front wheel support leg (A) in the side-by-side state described above.
Between the adjacent (15) and the reinforcement pin (22) of the rear wheel support leg (B), the inward horizontal state from the exposed head (23) of the reinforcement pin (22) of the rear wheel support leg (B) is established. As shown in FIGS. 11 and 13, a pair of parallel fitting protrusions (32) are integrally projected. Moreover, both fitting protrusions (32) are reinforcement pins.
(22) While being located on the longitudinal shaft stopper (bb) of itself, it is distributed in the peripheral portion sandwiching the bearing hole (24).

On the other hand, in the exposed head portion (16) of the reinforcing pin (15) in the front wheel support leg (A), the receiving groove (33) of the fitting protrusion (32) is provided as shown in FIGS. Correspondingly formed as one set. The receiving concave groove (33) of the fitting protrusion (32) is depressed in the outer flat surface of the exposed head portion (16), which is in a rotation angle range (θ of 45 to 60 degrees). ), The opening is elongated as a circular arc locus.

That is, the pair of receiving recessed grooves (33) are also distributed so as to sandwich the central bearing hole (17), but one end portion of the opening of both of them is provided with the longitudinal axis (a) of the reinforcing pin (15) itself. -A) and 45
It is located on an imaginary diameter line (xx) intersecting by -60 degrees. For this reason, the fitting protrusion (32) on the rear wheel support leg (B) side is inserted into the receiving groove (33) on the front wheel support leg (A) side.
And support both legs (A) and (B) to the pivot shaft (2
Under the condition that it is assembled by (8), both supporting legs (A) and (B) when viewed from the lateral direction, as clearly seen from the comparison of FIGS. 16 and 17, have their leg pipes (11) (18). ) It is possible to perform an operation of converting between the closed leg state in which both of them overlap each other and the open state with the above-mentioned crossing angle, and the degree of opening and closing thereof can be appropriately adjusted within the rotation angle range (θ).

However, in the case of the illustrated example, the rotating projection (32) is provided on the rear wheel support leg (B) side.
The corresponding receiving groove (33) is formed on the front wheel support leg (A) side, but as long as the above-mentioned purpose can be achieved, conversely, from the front wheel support leg (A) side, the fitting projection ( It does not matter if the projection 32) is extended and the receiving groove (33) is formed on the rear wheel support leg (B) side.

In addition, between the reinforcing pin (22) of the rear wheel support leg (B) and the reinforcing pin (25) of the pusher frame (C) which are also in the side-by-side alignment, the reinforcing pin (in the rear wheel support leg (B) ( As shown in FIGS. 11 and 12, another fitting protrusion (34) is integrally projected from the exposed head portion (23) of the exposed head (23) in a horizontal state. This fitting protrusion (34) is also located on the upper peripheral portion of the bearing hole (24) on the longitudinal axis (bb) of the reinforcing pin (22) itself.

Then, in the exposed head portion (26) of the reinforcing pin (25) in the pusher frame (C) facing this, as apparent from FIGS. 14 and 15, the receiving groove (35) of the fitting protrusion (34) is formed. ) Is correspondingly depressed. The receiving groove (35) has a circular arc opening shape which is much narrower than the fitting convex receiving groove (33) of the front wheel support leg (A), and has a locus extending over a rotation angle range (γ) of 225 to 240 degrees. Is equipped with.

That is, one end of the opening of the receiving groove (35) is a reinforcing pin.
(25) It is located on its own longitudinal axis (cc), and the other end portion of the opening is also 225-2 and its longitudinal axis (cc).
It is located on an imaginary diameter line (y-y) that intersects only 40 degrees and, in relation to the front wheel support leg (A), when viewed from the lateral direction, a pusher frame for the front wheel support leg (A). (C)
As apparent from the comparison of FIGS. 18 and 19, it is possible to convert to a standing operation state in which they are substantially in a straight line with each other and to extend to an overlying forward sloping operation state by extending them backward and upward. The undulation degree of C) can also be adjusted appropriately within the rotation angle range (γ).

In this respect, one fitting protrusion on the rear wheel support leg (B) side in the illustrated example.
(34) is formed with the receiving concave groove (35) on the side of the pusher frame (C), respectively, but if the above purpose can be achieved,
On the contrary, the fitting protrusion (34) may be extended from the side of the pusher frame (C) and the receiving groove (35) may be formed on the rear wheel support leg (B) side.

In any case, as is apparent from FIG. 7, the constant distance (W1) between the front wheel support legs (A) and the constant distance between the rear wheel support legs (B).
(W2) and the constant interval (W3) of the pusher frame (C) are differently changed so as to become wider in order, and a common pivot shaft is used.
Since it is rotatably assembled by (28), it can be folded as small as possible as a whole without interfering with each other, and the opening / closing degree of both the support legs (A) and (B) and the pusher The undulation degree of the frame (C) can also be locked in the adjusted state by tightening the fixing nut (30) with respect to the pivot shaft (28). A grip cover (not shown) is used by fitting it on the horizontal upper end of the pusher frame (C).

Further, reference numeral (36) indicates both leg tubes in the front wheel support leg (A).
(11) Reinforcing bar crossed to the mid-height position, (37) is a reinforcing bar horizontally crossed to the mid-height position of both leg tubes (18) of the rear wheel support leg (B), After that, the reinforcing bar (37) of the wheel support leg (B) is fixedly integrated with the both leg tubes (18),
The reinforcing bar (36) of the front wheel support leg (A) is wound so as to be vertically slidable by using the both leg tubes (11) as guide rails. Moreover, the locking claw (38) is integrally projected downward from the central portion of the reinforcing bar (36).

(39) is a stopper bar fixed and laterally fixed near the lower ends of both leg pipes (11) of the front wheel support legs (A), in which the bag receiving seat (40) is hinged (41) or the like. It is pivotally attached in a vertically rotatable manner. When the seat (40) is used, it is regulated from below by the stop bar (39) as shown in FIG. 4 so that it is orthogonal to the leg tube (11) of the front wheel support leg (A) when viewed from the side. It has become so.

On the other hand, when the seat (40) is pushed up to the state where it overlaps with the leg pipe (11) as shown in FIGS.
By sliding the (36) downward to lock the locking claw (38) to the receiving seat (40), the unused state can be stably locked and held.

(42) is a shopping bag made of flexible material such as vinyl, leather, etc., which can be attached to and detached from the pivot shaft (28), pusher frame (C), etc. Used lowered. In the suspended state, the back surface of the bag (42) leans against both leg tubes (11) of the front wheel support legs (A),
Similarly, the bottom surface is supported by the receiving seat (40). Therefore, even if an item is loaded from above, there is no possibility that the bag (42) will be illegally deformed.

<Operation> FIGS. 1 to 4 show the assembled and used state of the present invention. In this state, the front wheel support leg (A) and the rear wheel support leg (B) are
The legs are opened in an inverted V shape in side view that intersects only 45 to 60 degrees, and from the pivot shaft (28) toward the upper rear,
The crossing angle between the pusher frame (C) and the rear wheel support leg (B) is maintained at 225 to 240 degrees so that the pusher frame (C) extends upright almost straight with the front wheel support leg (A). Under that condition, the fixed nut (3
It has been locked safely after being tightened in (0).

Therefore, when the old man holds the pusher frame (C),
The present invention can be used as a cane wheel by hand, and in that case, even if an unreasonable pushing force acts on the pusher frame (C), a receiving groove (opened to the reinforcing pin (25) side of the pusher frame (C) ( 3
Since the fitting protrusion (34) protruding from the reinforcing pin (22) side of the rear wheel support leg (B) is fitted to one end of (5), the pusher frame (C) is accidentally lowered. It can be said that it is a safe old man's car as a substitute for a cane that leans against it without fear of being caught.

Then, after temporarily loosening the fixing nut (30) from the state of using the handwheel as an elderly car, as shown in FIG. 21, the rear wheel support leg (B) is overlaid on the front wheel support leg (A) from behind. Fold to fit and keep the nut in place (30)
If it is locked by means of the above, it becomes possible to pull the pusher frame (C) forward and use the elderly car as a shopping cart.

At this time, the shopping bag (42) leans against the front wheel support leg (A) as it is, and since only the rear wheel (20) acts on the ground, it can be used by an elderly person in a light and comfortable manner.

Further, as described above, the front wheel support leg (A) and the rear wheel support leg (B)
In addition to closing the legs, the pusher frame (C) is further rotated forward so that the pusher frame (C) is folded so as to overlap the front wheel support leg (A) as shown in FIG. be able to.

By doing so, the front wheel support leg (A), the rear wheel support leg (B), and the pusher frame (C) are given wide and narrow changes at the constant intervals (W1) (W2) (W3), so that the overall In addition to being significantly flattened, and in combination with the pusher frame (C) being tilted downward, its height is reduced to about half, and it can be effectively stored as a small and compact folded state.

In order to achieve such an effect, the fact that the bag receiving seat (40) can be locked in the lying down state also works organically. Needless to say, by applying the above operations in the opposite direction, the entire folded state can be converted into a pulling state as a shopping cart or a hand pushing state as an elderly car.

<Effects of the Invention> As described above, in the folding type elderly car of the present invention, the front wheel support leg (A) and the front wheel support leg (A), which are framed in a substantially U-shape when viewed from the front, which keeps a constant distance (W1). A rear wheel support leg (B) framed in a U-shape similar to the front view that keeps a constant width (W2) wider than (A), and a constant width wider than the rear wheel support leg (B) A pusher frame (C) that is bent in a substantially inverted U shape in front view to keep (W3)
As a metal hollow pipe material that crushes the front wheel support leg (A), the rear wheel support leg (B), and the pusher frame (C), the left and right ends of the support legs (A) and (B) are Pair of reinforcement pins (15) (22)
While fixing and fixing each of them, a pair of left and right reinforcing pins (25) are also implanted and integrated into the lower end portion of the pusher frame (C) to expose the above-mentioned reinforcing pins (15), (22) and (25) to the exposed head (16). (23) (26) is aligned in a side-by-side alignment, and its exposed head (16) (23) (2
By horizontally skewering one pivot shaft (28) to 6) and penetrating it, the front wheel support leg (A), the rear wheel support leg (B) and the pusher frame (C) are rotatably assembled. Reinforcement pin (15) of front wheel support leg (A) in the side-by-side state
And the reinforcing pin (22) of the rear wheel support leg (B) are adjacent to each other, a pair of parallel fitting protrusions (32) are horizontally provided from one of the exposed heads (23). Extend to the other exposed head (16) and open the receiving concave groove (33) of each mating convex (32) correspondingly, and project the convex (32) and concave groove (33).
By fitting with the front wheel support leg (A) and the rear wheel support leg (B)
Are defined so that they can be relatively opened and closed within a rotation angle range (θ) of 45 to 60 degrees, and the reinforcement pin (2) of the rear wheel support leg (B) also in the side-by-side state.
2) and the reinforcing pin (25) of the pusher frame (C),
One mating protrusion separate from the exposed head (23) of either one
(34) is projected horizontally, and the receiving concave groove (35) of the fitting projection (34) is opened correspondingly to the other exposed head (26), and the projection (34) and the concave groove (35 ), The pusher frame (C) is determined so that it can be raised and lowered in a rotation angle range (γ) of 225 to 240 degrees with respect to the rear wheel support leg (B), and the both support legs (A) are The open / close operation state of (B) and the up / down operation state of the pusher frame (C) can be locked by tightening the fixing nut (30) screwed to the end of the pivot shaft (28). Therefore, there is an effect that the problem of the prior art described at the beginning can be completely solved.

That is, in the case of the present invention, the front wheel support leg (A), the rear wheel support leg (B), and the pusher frame (C) are rotatably assembled through one common pivot shaft (28). Reinforcement pins (15) (22) (2) attached and aligned with their overall side-by-side alignment
The adjacent support legs (A) are formed by fitting the fitting protrusions (32) and (34) and the receiving recessed grooves (33) and (35) between the two adjacent ones.
Since the opening / closing angle range of (B) and the undulation angle range of the pusher frame (C) are regulated, the overall folding mechanism can be significantly simplified, and nevertheless the reinforcing pin (15) (22) (25) Implantation and fixing will also improve overall assembly strength.

Further, the front wheel support leg (A), the rear wheel support leg (B), and the pusher frame (C) are changed differently as the relationship is gradually widened at the constant intervals (W1) (W2) (W3). Frame (C)
Folds down around the pivot axis (28) and folds so that it overlaps with the front wheel support legs (A), so even when the entire folding state when not in use, the height is about half and it is remarkably small and flat. And is excellent in space saving effect.

In the case of the present invention, the shopping bag (42) is hung so that it leans against the front wheel support leg (A), but the shopping bag (42) is compared with the fixed interval (W ₁ ) of the front wheel support leg (A). The rear wheel support leg (B) and the pusher frame (C) at a fixed interval (W
₂ ) (W ₃ ) are sequentially set to be wider, so unlike the prior art described at the beginning, the bag (4
The bag (4
It is possible to smoothly fold both supporting legs (A) and (B) and the pusher frame (C) without being affected by 2).

Particularly, in the present invention, the reinforcement pin (15) of the front wheel support leg (A),
Between the adjacent one of the rear wheel support leg (B) and the reinforcing pin (22), one of the fitting convexes (32) and the other receiving concave groove (3
By fitting with 3), both support legs (A) and (B) are
The opening / closing operation is defined so that the opening / closing operation can be relatively performed in the rotation angle range (θ) of 60 degrees.

In addition, between the reinforcing pin (22) of the rear wheel support leg (B) and the reinforcing pin (25) of the pusher frame (C), one of the fitting protrusions (34) is provided between the adjacent reinforcing pins. By fitting the other receiving groove (35), the pusher frame (C) can be raised and lowered with respect to the rear wheel support leg (B) within a rotation angle range (γ) of 225 to 240 degrees. ing.

Therefore, in addition to the assembled and used state as a cane wheel as shown in FIGS. 1 to 6 and the folded state as shown in FIG.
Under the assembled state in which the pusher frame (C) as shown in FIG. 1 is extended upward and rearward of the front wheel support leg (A), the rear wheel support leg (B)
It is also possible to lock the chisel from the rear side to the front wheel support leg (A) in a folded state in which they are brought close to each other, so that the present invention can be used by pulling from the front side as a shopping cart.

At this time, the shopping bag (42) is in a state of leaning against the front wheel support leg (A), and the rear wheel (20) of the wide rear wheel support leg (B) overlapping the front wheel support leg (A) from behind. ) Acts on the ground, an old man can easily hold and hold the pusher frame (C) and use it, and there is no possibility that the bag (42) will be pinched and crushed by the rear wheel support legs (B).

Furthermore, the opening / closing degree of the front wheel support leg (A) and the rear wheel support leg (B) is set within the predetermined rotation angle range (θ), and the undulation degree of the pusher frame (C) is set in advance. Within the specified rotation angle range (γ), both of them are pivot shafts (28)
Can be adjusted during the tightening operation of the fixing nut (30) with respect to the above, and such an effect cannot be achieved by the configuration of the prior art mentioned at the beginning.

In particular, if the configuration of claim 2 is adopted, the shopping bag (42) is used regardless of whether the hand cart is used as a wagon or the pulling is used as a shopping cart.
Can be more stably supported by the bag receiving seat (40) and is not restricted by the items stored therein, and the bag receiving seat (40) is superposed on the front wheel supporting leg (A). Since it can be locked down by the locking claws (38) of the reinforcing bars (36) that slide along the front wheel support legs (A), the entire folded state can be made even smaller and flatter. There is also an effect to be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which the present invention is used by hand,
3 is a front view and a side view thereof, FIG. 4 is a sectional view taken along the line 4-4 of FIG. 2, and FIG. 5 is a perspective view showing a state in which the bag receiving seat corresponding to FIG. 6 is a sectional view taken along line 6-6 in FIG. 5, FIG. 7 is a partially enlarged sectional view taken along line 7-7 in FIG. 3, and FIG. 8 is an exploded perspective view showing the overall lateral arrangement of the reinforcing pins. Fig. 9 is a front view showing a reinforcing pin of a front wheel support leg in an extracted manner, Fig. 10 is a sectional view taken along line 10-10 of Fig. 9,
FIG. 11 is a front view showing the reinforcement pins of the rear wheel support legs in an extracted manner, FIGS. 12 and 13 are also left and right side views, and FIG. 14 is a front view showing the reinforcement pins of the pusher frame in an extracted manner. 15 is a sectional view taken along line 15-15 of FIG. 14, and FIG. 16 is 16 of FIG.
Partial cross-sectional view showing an open state of both support legs along line -16,
FIG. 17 is a partial sectional view showing a closed state of both supporting legs, FIG. 18 is a partial sectional view showing a standing state of the pusher frame along line 18-18 of FIG. 7, and FIG. FIG. 20 is a partial sectional view showing a lying state, FIG. 20 is a side sectional view showing an overall folded state corresponding to FIG. 4, and FIG. 21 is a side view showing a use state as a shopping cart.
2 to 24 are enlarged cross-sectional views taken along the line 22-22, the line 23-23 and the line 24-24 in FIG. 4, and FIG.
FIG. 25 is a sectional view taken along line 25-25 of the figure. (15) (22) (25) …… Reinforcing pin (16) (23) (26) …… Head (17) (24) (27) …… Bearing hole (28) …… Pivot shaft (30) ...... Fixing nut (32) (34) …… Mating convex (33) (35) …… Receiving groove (36) (37) …… Reinforcing bar (38) …… Locking claw (40) …… Bag receiving seat (42) …… Shooting bag (A) …… Front wheel support leg (B) …… Rear wheel support leg (C) …… Pusher frame (W1) (W2) (W3) …… Constant interval ( θ) (γ) …… Rotation angle range

Claims (2)

[Scope of utility model registration request] 1. A front wheel support leg (A) which is framed in a substantially U-shape in a front view to keep a constant distance (W1) and a constant width (W2) wider than the front wheel support leg (A). A rear wheel support leg (B) that is framed in a U-shape similar to the front view, and an almost inverted U-shape in front view that maintains a wider space (W3) wider than the rear wheel support leg (B) Curved pusher frame (C)
As a metal hollow pipe material that crushes the front wheel support leg (A), the rear wheel support leg (B), and the pusher frame (C), the left and right ends of the support legs (A) and (B) are Pair of reinforcement pins (15) (22)
While fixing and fixing each of them, a pair of left and right reinforcing pins (25) are also implanted and integrated into the lower end portion of the pusher frame (C) to expose the above-mentioned reinforcing pins (15), (22) and (25) to the exposed head (16). (23) (26) is aligned in a side-by-side alignment, and its exposed head (16) (23) (2
By horizontally skewering one pivot shaft (28) to 6) and penetrating it, the front wheel support leg (A), the rear wheel support leg (B) and the pusher frame (C) are rotatably assembled. Reinforcement pin (15) of front wheel support leg (A) in the side-by-side state
And the reinforcing pin (22) of the rear wheel support leg (B) are adjacent to each other, a pair of parallel fitting protrusions (32) are horizontally provided from one of the exposed heads (23). Extend to the other exposed head (16) and open the receiving concave groove (33) of each mating convex (32), and then project the convex (32) and concave groove (33).
By fitting with the front wheel support leg (A) and the rear wheel support leg (B)
Are set so that they can be opened and closed relatively in the rotation angle range (θ) of 45 to 60 degrees, and the reinforcement pin (2) of the rear wheel support leg (B) also in the side-by-side state is set.
2) and the reinforcing pin (25) of the pusher frame (C),
One mating protrusion separate from the exposed head (23) of either one
(34) is projected horizontally, and the receiving concave groove (35) of the fitting convex (34) is opened correspondingly to the other exposed head (26), and the convex (34) and concave groove (35) ), The pusher frame (C) is determined so that it can be lifted and lowered within a rotation angle range (γ) of 225 to 240 degrees with respect to the rear wheel support leg (B), and the both support legs (A) are The open / close operation state of (B) and the up / down operation state of the pusher frame (C) can be locked by tightening the fixing nut (30) screwed to the end of the pivot shaft (28). A folding old man's car that is characterized by 2. A reinforcing bar at a mid-height position of the front wheel support leg (A).
(36) is horizontally slidable in the vertical direction, the locking claw (38) is projected downward from the center of the reinforcing bar (36), and the lower end of the front wheel support leg (A) is also formed. In the vicinity, the bottom receiving seat (40) of the shopping bag (42) is rotatably pivotally attached, and the bag receiving seat (40) which is laid down on the front wheel support leg (A) in a piled state, 2. The foldable elderly car according to claim 1, wherein the locking claw (38) of the reinforcing bar (36) that slides downward along the front wheel support leg (A) enables locking.