JP2745044B2 - Wheelbarrow - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand truck used for assisting walking, transporting luggage, and the like. More particularly, the present invention allows a pusher to push while resting on his elbow while walking, The present invention relates to a hand truck capable of sitting on a rest and a brake mechanism and a stopper mechanism which can be operated at hand by a pusher equipped with the hand cart.

[0002]

[Prior art]

1. A conventional general wheelbarrow usually has a shape as shown in FIG. The wheelbarrow (1) includes a front leg rod (2) for supporting a front wheel and a rear leg rod (3) for supporting a rear wheel.
And a handle rod (4) for connecting the left and right front leg rods (3) and a seat (5).

[0004] 2. Description of the Related Art [0004] As a conventional wheelbarrow that can be pushed forward while resting on an elbow, there is one as shown in FIG. The pushcart (6) is provided with an armrest (47) by bending a handlebar in the traveling direction, and a seat frame (8) supported by a front leg (2 ′) and a rear leg (3 ′). ), And the seat portion (5 ′) is supported by the seat frame rod (8).

[0004]

In the conventional wheelbarrow (6), the wheelbarrow (6) rests on the armrest (47).
Can be pushed, but it is dangerous to sit in the opposite direction to the direction of travel when sitting on the seat (5 ') during a break. Also,
The armrest (47) is in the way and cannot sit comfortably.

[0005] In the case of the wheelbarrow (1), it is possible to sit on the seat (5) while facing in the traveling direction. However, it is said that the wheelbarrow (1) is pushed forward with the elbow rested. It is difficult.

According to the present invention, it is possible to push forward with the elbow resting on the elbow rest and to be able to operate the steering wheel in such a state, and to sit comfortably in the advancing direction during a break. It is an object of the present invention to provide a hand truck that can be operated and a stopper mechanism and a brake mechanism that can be operated at hand by a pusher provided on the hand truck.

[0007]

Means for Solving the Problems In order to solve the above problems, the following means have been taken in the handcart (21) according to the present invention.

(I) The two back rods (1) on the backrest side
A substantially U-shaped joint (11) at each upper end of 0)
Is attached to be able to swing freely.

(B) The joint (11) and the gate-shaped handle bar (7) are connected.

(A) A gate-shaped lock rod (15) is swingably connected to both joints (11).

(2) A box (13) is swingably attached to one joint (11).

(F) A gate-shaped brake rod (14) is attached over the box (13) and one joint (11).

(F) An elbow rest (43) is provided on each of the left and right joints (11).

(And) A pillow material (15) is provided on the box (13).

(5) The wire-stopping member (16) is loosely inserted into the box (13), and the wire-stopping member (1) is inserted.
6) and the wire (17) are connected.

(R) A connecting rod (19) comprising two braking members (18) having a substantially U shape and both ends of which are bent in the same direction.
In addition, the braking member (18) and the rear leg rod (20) are swingably connected at the top of the substantially V-shaped braking member (18).

(N) Connecting rod (19) to wire (17)
Concatenate. Hereinafter, the function of the solution will be described with reference to the drawings. FIG. 1 is a perspective view of a handcart (21) according to the present invention. A joint (11) is swingably connected to the upper end of each of two back rods (10) on the backrest side of the hand truck (21). FIG. 2 is an enlarged front view showing the vicinity of the elbow rest (43) of the handcart (21) according to the present invention. FIG. 3 is a right side view, and FIG. 4 is a left side view. Joint (11) and back rod (10)
2, 3 and 4, the back rod (10) is loosely inserted into the hollow portion of the joint (11), and then is pivotally connected with a pin.

Further, both ends of the gate-shaped handle bar (7) are loosely inserted into the upper portions of the left and right joints (11) and then attached. Thus, the handle rod (7) can also swing with the swing of the joint (11).

Further, since the elbow rest (43) is also provided on the left and right joints (11), the joint (1) is provided.
It is possible to swing along with the swing of 1).

The box (13) is swingably connected to one of the joints (11) by pins as shown in FIG.
A gate-shaped brake rod (14) is attached to this box (13) with one end thereof loosely inserted. The other end of the brake rod (14) is attached to the other joint (11). Due to such a structure, the brake rod (14) can swing with the swing of the joint (11).

As shown in FIG. 2, both ends of the gate-shaped lock rod (22) are swingably connected to the left and right joints (11). The lock rod (22) can also swing.
The lock rod (22) can be pushed by the person pushing the wheelbarrow (21) while leaning on the elbow rest (43) and the handle rod (7), that is, the elbow rest. (43) and the handle rod (7) serve to lock the rear rod (10) in a vertical position. FIG. 8A is a front view of the lock rod (22), FIG. 8B is a right side view thereof, and FIG. 9 is a bottom view thereof. A concave portion (23) is provided in a bent portion of the lock rod (22), and the concave portion (23) is
0) The locked state is maintained by being stuck in the pin (24) provided on the upper side (see FIGS. 4 and 5).

The elbow rest (43), the handle rod (7), the brake rod (14), and the lock rod (22) are configured to swing together with the swing of the joint (11) as described above. Therefore, as shown in FIG. 1, the elbow rest (43), the handle rod (7), the brake rod (14), and the like are fixed in such a state that they are substantially perpendicular to the back rod (10). Thus, it is possible to push the armrest (43) and the handlebar (7) while leaning against it, or as shown in FIG. 6, to place the armrest (43), the handlebar (7), and the brake. Rod (1
4) and the like are brought to a position substantially parallel to the back rod (10), so that it is possible to sit on the seat (25) slowly in the traveling direction.

Next, the brake mechanism and the stopper mechanism will be described. FIG. 13 is an enlarged front view of a main part near the rear wheel of the handcart (21) according to the present invention. A substantially U-shaped braking member (1
8) is connected to the rear leg rod (20) so as to swing about the pin (27) as a fulcrum. Both ends of the braking member (18) are bent outward, respectively, to form bent portions (28) and (29), respectively.

When the connecting rod (19) is pulled up by the wire (17), the braking member (18) swings, the bent portion (28) comes into contact with the rear wheel (26), and the rotation of the rear wheel (26). Is controlled. On the other hand, even if the connecting rod (19) is pushed down by returning the wire (17), the braking member (18) swings, and the bent part (29) is formed in a recess provided near the axle of the rear wheel (26). (30), and the rotation of the rear wheel (26) is controlled.

The other end of the wire (17) is connected to a wire-stop member (16) loosely inserted in a box (13) swingably connected to the joint (11).

The wire-stop member (16) is a box (13)
The projection (32) is loosely inserted into the elongated hole (33) provided in the box (13). The wire stop member (16) can move up and down along the elongated hole (33), and can swing about the projection (32).

When the brake rod (14) loosely inserted into the box body (13) is pulled up similarly to the wire-stopping member (16), the wire-stopping member (16) is also pulled up.
As a result, the wire (17) is pulled upward, whereby the braking member (18) swings via the spring (46), and the bent portion (28) controls the rotation of the rear wheel (26). That is, the brake is applied.

Here, the box (13) can be swung about a pin (31) loosely inserted into a small hole (42) provided on the side surface thereof in order to increase the pulling allowance of the wire (17). It is provided. That is, the brake rod (14)
Is raised, the brake rod (14) pushes up the pillow material (15) provided in the box (13). As a result, the box (13) can be described with reference to FIGS. It will swing counterclockwise. In this case the wire
The body is pulled up with the wire-stop member (16), while the wire-skin is pulled down with the box (13), so that the pull-off is greater than if the box (13) did not swing. It is.

FIG. 4 shows the wire-stopping member (16).
Turning to counterclockwise in FIG. 5, the wire (1
Since the end of (7) is attached to the side surface of the wire-stop member (16), the wire (17) is pushed down. Thereby, the braking member (18)
Swings, and the bent portion (29) fits into a concave portion (30) provided near the axle of the rear wheel (26), whereby the rear wheel (2) is rotated.
The rotation of 6) is controlled, that is, the stopper operates.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the wheelbarrow (21) according to the present invention, the joint (1) is provided so that the pusher can push the wheelbarrow (21) while leaning against the wheelbarrow (21).
1) An armrest (43) is provided on the upper side, and a handlebar (7) is provided so as to protrude from the upper end of the backbar (10) in the traveling direction. On the other hand, in order to sit on the seat (25) of the handcart (21), the armrest bar (7) projecting in the traveling direction is an obstacle. Therefore, in order to sit comfortably on the seat (25), the handle rod (7) and the brake rod (14) protruding in the traveling direction like the handle rod (7) are formed to be bendable. is necessary. For this purpose, in the wheelbarrow (21) according to the present invention, the handle rod (7) and the brake rod (1) are used.
4) and the lock rod (22) is connected to a joint (11) that is swingably connected to the back rod (10).

FIG. 7A is a front view of the joint (11), and FIG. 7B is a side view of the same. As shown, the joint (11) has a substantially U-shape, and a plurality of small holes are provided on the front and back surfaces thereof.

The method of connecting the back rod (10) and the joint (11) is such that the back rod (10) is loosely inserted into the hollow portion of the joint (11), and then is swingably connected with the pin (35). It is. The pin (35) is loosely inserted into a small hole (34a) provided at the center of the joint (11).

The connecting method of the handle rod (7) and the joint (11) is as follows. After the handle rod (7) is loosely inserted into the cavity of the joint (11), the elbow is connected across the left and right joints (11). The mounting base support rod (36) is fitted into the small hole (34b) of the joint (11), and further connected by passing through the handle rod (7) (see FIG. 2).

One end of the gate-shaped brake rod (14) is shown in FIG.
The brake rod (1) is fixed to the inner surface of the joint (11) by a brake rod receiver (37) as shown in FIG.
The other end of 4) is loosely inserted and fixed in the box (13).
As shown in FIG. 2, the gate-shaped lock rod (22) has its bent portions at both ends loosely inserted into the joint (11) and then inserted into the small hole (34d) provided in the joint (11). It is fixed to the joint (11) with a pin (38).

As shown in FIG. 8, the lock rod (22)
And a projection-shaped spring hook portion (39), and a spring hook pin (40) is fitted into a small hole (34e) provided in the joint (11). The spring hook portion (39) and the spring hook pin (40) And a pressing coil spring (41) is attached. Due to the pressing force of the pressing coil spring (41), the lock rod (22) is automatically locked when the handle rod (7) or the like is moved perpendicular to the back rod (10), that is, the lock rod (22). (2)
3) is stuck in the convex portion (24) on the back rod (10).

As shown in FIG. 12a, the box (13) is substantially U-shaped, and has a long hole (33) and a small hole (42) on the side surface. A column-shaped pillow material (15) is interposed between the left and right side plates. The box (13) and the joint (11) are swingably connected by a pin (31) fitted over the small hole (42) on the box (13) and the small hole (34c) on the joint (11). Have been.

A substantially rectangular parallelepiped wire is provided in the box (13).
An elongate hole (33) in which the stopper (16) has a projection (32) on the wire-stopper (16) provided in the box (13).
It is loosely inserted into the shape. A wire (17) is connected to the side surface of the wire-stopping member (16), and if the wire-stopping member (16) is rotated counterclockwise in FIGS. ) Will hang down. The brake rod (14) is provided with a pillow (15) and a wire stopper (1) in a box (13).
6) Loosely inserted in contact with the lower surface. In this case, when the brake rod (14) is lifted, the brake rod (14) is raised.
Pushes up the pillow material (15) and rotates the box body (13) counterclockwise in FIG. 4 and FIG.

A plate-like key-shaped elbow rest (43) is adhered to the left and right joints (11). FIG. 10 is a plan view of the elbow rest (43) and the elbow rest supporting rod (36), and FIG. 11 is an enlarged front view of a main part near the elbow rest (43) and the elbow rest supporting rod (36). (However, a box, a brake rod, etc. are omitted). The elbow rest (43) is adhered to the joint (11), and is supported by a key-shaped part through an elbow rest support rod (36). As shown in FIG. 1, it is more convenient to use a cover (44) containing a cushioning material after the core is laid across the elbow rest (43) and the elbow rest support rod (36). Become.

FIG. 3 is an enlarged right side view of the main part showing the vicinity of the armrest, and (45) is a lock device. The lock device (45) is rotatably provided on the outer surface of the joint (11), and is fitted into a projection on the back rod (10) to thereby handle the handle rod (7) or the brake rod (14). ) Is fixed in a direction substantially perpendicular to the back rod (10).

FIG. 13 is an enlarged front view of a main part showing the vicinity of the rear wheel (26). A braking member (18) is swingably connected to the left and right rear leg rods (20) via pins (27), respectively. The braking member (18) has a substantially elliptical shape, and both ends thereof are bent in the same direction to form bent portions (28) and (29), respectively. Folding part (28)
Controls the rotation of the rear wheel (26) by contacting the rear wheel (26), while the bent portion (29) controls the rotation of the rear wheel (26).
The rotation of the rear wheel (26) is controlled by fitting into a concave portion (30) provided in the vicinity of the shaft. The left and right braking members (18) are connected by a connecting rod (19), and the connecting rod (19) is connected to one end of a wire (17).

[0041]

Since the handcart according to the present invention is constructed as described above, it can be pushed while resting on the armrest.
In addition, by folding the handle rod and the brake rod during a break, it becomes possible to sit comfortably in the traveling direction. Also, the pusher can freely operate the stopper mechanism and the brake mechanism at hand.

[Brief description of the drawings]

FIG. 1 is a perspective view of a handcart (21) according to the present invention.

FIG. 2 is an enlarged front view of a main part showing the vicinity of an armrest of a handcart (21) according to the present invention.

FIG. 3 is a right side view of the same.

FIG. 4 is a left side view of the same.

FIG. 5 is a left side view showing a state in which the brake rod (14) is pulled up.

FIG. 6 is a left side view showing a state where the handlebar (7) and the like are bent.

FIG. 7 is a front view of a joint (11). b Left side view.

FIG. 8A is a front view of the lock rod (22). b Right side view.

FIG. 9 is a bottom view of the same.

FIG. 10 is a plan view of the elbow rest (43) and the elbow rest support rod (36).

FIG. 11 is an enlarged front view of a main part near the elbow rest (43) and the elbow rest support rod (36).

FIG. 12 a is a side view of the box body (13). b Front view.

FIG. 13 is an enlarged front view of a main part near the rear wheel of the handcart (21) according to the present invention.

FIG. 14 is a perspective view showing a conventional example.

FIG. 15 is a perspective view showing a conventional example.

[Explanation of symbols]

7 ... handlebar 10 ... backbar 11
..Joint 13 ・ ・ ・ Box 14 ・ ・ ・ Brake rod 15
··· Pillow material 16 ··· Wire-stop member 17 ··· Wire 18 ··· Braking member 19 ··· Connecting rod 22 ·
..Lock rods 23: concave portions 24: convex portions 26:
Rear wheel 28, 29 ... Bend 43 ... Elbow rest

Claims (2)

(57) [Claims] 1. A wheelchair provided on a rear backrest side of a hand truck.
At the upper end of each of the back bars (10) of the book, a joint (1
1) swingably connected. The both ends of the gate-shaped handlebar (7) are connected across the left and right joints (11). Gate-shaped blur over both left and right joints (11)
The lever (14) is connected. A gate-shaped lock rod (22) is connected to both the left and right johnites (11). An elbow rest (43) is provided on each of the left and right joints (11). A concave portion (23) is provided in the bent portion of the lock rod (22) and fits into a pin (24) provided in the back rod (10), so that an elbow rest (43), a handle rod (7) and a shaker are provided. −
A hand truck wherein the push rod (14) can be fixed at a position substantially perpendicular to the back rod (10). 2. A substantially U-shaped box body (13) is swingably connected to one joint (11). A column-shaped pillow (1) extends over both side plates of the box (13).
5) is provided. One end of a brake rod (14) is loosely inserted into the box (13) in contact with the lower surface of the pillow (15). A wire-stop member (16) having a substantially rectangular parallelepiped shape is loosely inserted into the box (13) so as to be vertically movable and rotatable. One end of the wire (17) was connected to the wire-stopping member (16). A brake having bent portions (28) and (29) formed by bending both ends of two left and right rear leg rods (20) supporting the left and right rear wheels (26). Each of the members (18) is swingably mounted. A connecting rod (19) for connecting the left and right braking members (18).
And the other end of the wire (17). The hand truck according to claim 1, further comprising a brake mechanism and a stopper mechanism configured as described above.