JP2002274390A - Hand cart with brake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase operability and safety by providing, on a hand cart, brakes directly operable independently on both right and left sides and a locking mechanism for holding the operating state of the brake. SOLUTION: In a hand cart 5 with brakes, a pair of right and left wheels 3 and 3 are fitted to the lower surface of a base 2 and a hand rod 4 for pushing is installed vertically on the upper surface of the base 2 at one side part. The brakes 6 and 6 are installed on right and left wheels 3 and 3, right and left operating levers 14 and 14 are disposed on the hand rod 4 so as to operate the brakes 6 and 6, and a lock mechanism is installed to hold the operating state of the brakes 6 and 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelbarrow with a brake, and more particularly to a wheelbarrow with a brake provided with left and right brakes and a lock mechanism for holding the operating state of the brake. .

[0002]

2. Description of the Related Art A conventional wheelbarrow of this type will be described with reference to FIG. In the figure, 1
Is a wheelbarrow, and the wheelbarrow 1 is provided with four wheels 3, 3, 3, 3 on the front, rear, left and right of a lower surface of a base 2 on which luggage and the like are placed. U-shaped pushrod 4
Is erected. The traveling directions of the front left and right wheels 3 and 3 can be freely changed in the direction of 360 degrees, and the traveling directions of the rear left and right wheels 3 and 3 are limited to substantially the front and rear direction.

Accordingly, when the pushrod 4 is pushed in a specific direction, the right and left wheels 3, 3 change directions, so that the pushcart 1 can move in the specific direction.

However, since the wheelbarrow 1 does not have the braking means and the stopping means, when deceleration, braking and stopping are performed, the operator decelerates and brakes by the operator's force or by using another tool. And had to stop.

[0005] Therefore, not only the operability is poor, but also an accident such as a drop of luggage or a runaway of a wheelbarrow may occur, which is extremely dangerous.

[0006] Although not shown in the drawings, there is known a pushcart provided with one operating lever on a pushrod of a pushcart, and the pushcart is braked or locked by operating the operating lever. That is, when the operation lever is pressed, the braking of the left and right wheels is released and the handcart can travel, and when the operation lever is loosened, the braking of the left and right wheels starts, and when the operation lever is completely released, the braking is completely performed. And the braking is locked.

However, in the hand truck, since the same force is applied to the left and right wheels at the same time, there has been a problem that it is not possible to perform detailed operations such as changing the direction of the hand cart by applying different braking to the left and right wheels.

Therefore, there is a technical problem to be solved in order to improve operability and safety by providing a brake which can be operated separately at right and left at hand and a lock mechanism for holding an operating state of the brake. Therefore, an object of the present invention is to solve this problem.

[0009]

DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above object, and has at least a pair of left and right wheels on the lower surface of a base, and has a hand push on one side of the upper surface of the base. In a wheelbarrow having a barrow erected on the right side thereof, a brake is provided on each of the left and right wheels, and a wheelbarrow with a brake provided with left and right operation levers on the barrow to operate the brakes respectively. And, in a wheelbarrow provided with at least a pair of left and right wheels on the lower surface of the base, and a push rod for hand pressing on one side of the upper surface of the base, brakes are provided on the left and right wheels respectively. In order to operate each of the brakes, left and right operation levers are disposed on the pushrod, and a pushcart with a brake provided with a lock mechanism for holding the operation state of the brake, and the brake is provided with the wheels same A wheelbarrow with a brake, which is configured to provide a rotating disk and brake the disk by sandwiching the disk with a pad, and the lock mechanism fixes the operation lever to the wheelbarrow using a lock pin. The present invention provides a wheelbarrow with a brake, which is configured to be locked by:

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. For convenience of description, the same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 1, reference numeral 5 denotes a wheelbarrow, and the wheelbarrow 5 is provided with brakes 6, 6 for braking the wheels 3, 3 on rear left and right wheels 3, 3. And the brake 6
As shown in FIGS. 2B, 2C and 2E, the wheels 3
A disk 7 is provided which rotates coaxially with the disk 7, and is configured to be braked by pressing the pads 8, 8 which sandwich the disk 7 from the left and right.

The pads 8, 8 are attached to a substantially C-shaped pad support frame 9 and a distal end of a substantially U-shaped pad support frame 10, and the pad support frames 9, 10 have the substantially central portions thereof as described above. The pads 8, 8 are pivotally supported on a support shaft 11 fixed to the lower surface of the base 2 so that the pads 8, 9 rotate around the support shaft 11 in opposite directions. The disk 7 is held. When the pads 8, 8 are not operated, the discs 7, 8 are actuated by a spring and a regulating member (not shown).
Is kept away from

Then, one of the pad supporting frames 9
Is fixed to a wire cable 12, and the other end of the pad support frame 10 is fixed to a cable cover 13 covering the wire cable 12.

Further, the wire cable 12 covered by the cable cover 13 extends along the push rod 4 to the upper end of the push rod 4. At the upper end of the push rod 4, mounting members 15, 15 for mounting the left and right operation levers 14, 14, as shown in FIGS.
The operating lever 14 is attached to the mounting member 15.
The wire cable 12 is connected to the base end of the operation lever 14. The other end of the cable cover 13 is fixed to the mounting member 15.

When the operating levers 14, 14 of the left and right brakes 6, 6 are simultaneously operated, the operating cables 14, 12 are actuated by the operating levers 14, 14.
Is pulled, and the wire cables 12, 12 are pulled, whereby the pad support frames 9, 9 swing around the support shaft 10, respectively, while the wire cables 12, 12 are pulled. The cable cover 12 is extended, and the extension of the cable cover 12 causes the pad support frames 10 to swing around the support shaft 10 in a direction opposite to the swing of the pad support frames 9, 9. One pad support frame 9 and 10
A pair of pads 8 and 8 provided at the tip of the other, and a pair of pads 8 and 8 provided at the tip of the other pad support frames 9 and 10, respectively, sandwich the disks 7, 7;
The brake is applied to the wheels 3,3.

In this manner, the wheelbarrow 5 can apply a brake to the wheels 3 and 3 by the brakes 6 and 6, so that the operability and safety of the wheelbarrow 5 can be improved. Further, by using the disks 7, 7 and the pads 8, 8 for the brake 6, the braking effect can be enhanced.

It is possible to operate only one of the operation levers 14, but in this case, since the brake is not applied to the other wheel 3, the traveling direction of the handcart 1 changes. Further, the traveling direction of the handcart 1 can be arbitrarily changed by making the left and right operation forces of the operation levers 14 and 14 different.

The pads 8, 8 are configured to sandwich the disk 7, but instead of this configuration, a configuration in which the disk 7 is pressed by one pad 8 is also possible. Further, instead of the structure in which the disk 7 is held between the pads 8, the wheel 3 is directly held between the pads 8, or the wheel 3 is directly pressed by one pad 8. It is also possible.

FIG. 3A shows a lock mechanism 16 for holding the operation lever 14 in an operating state. The lock mechanism 16 is provided with a lock pin holder near the mounting member 15 of the operation lever 14 of the push rod 4. 17 is fixedly provided, and a pin holding hole 18 is formed at the tip of the lock pin holder 17;
Then, a lock pin 19 having a head portion 19a shown in FIG. 3B is pierced through the pin holding hole 18, and an annular stopper shown in FIG. 20, a substantially flat lock pin guide 21 is fixed to the operation lever 14, and a lock pin insertion hole 22 for inserting the lock pin 19 into the lock pin guide 21 is formed. It is composed. The stopper 20 is provided with a number of radial cuts 20a, 20a,.
a, 20a... facilitate the press fitting.

The tip of the lock pin 19 is provided with a lock pin insertion hole 22 formed in the lock pin guide 21.
, The operating lever 14 can be locked while the operating lever 14 is being operated, that is, with the brake applied. When releasing the lock,
The lock pin 19 is slid to the left in FIG. 3A, and the tip of the lock pin 19 is inserted into the lock pin insertion hole 2.
The lock is released by pulling it out from 2.

Thus, the handcart 5 can be easily held in a state where the brake is applied by the lock mechanism 16, and the lock mechanism 16 is installed near the operation lever 14. Therefore, the lock operation is easy.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0022]

As described in detail in the above embodiment, the invention according to claim 1 is provided with at least a pair of left and right wheels on the lower surface of the base, and manually pressed on one side of the upper surface of the base. In a wheelbarrow in which a pushrod is provided upright, a brake is provided on each of the left and right wheels, and left and right operation levers are provided on the pushrod to operate the brakes respectively. Thereby, the wheelbarrow can be braked separately on the left and right at hand, and operability and safety can be improved.

According to a second aspect of the present invention, in the wheelbarrow, brakes are provided on left and right wheels, respectively, and left and right operation levers are provided on a pushrod for operating the brakes respectively. Since the lock mechanism for holding the operation state of the brake is provided, in addition to the effect of the invention according to claim 1, it is possible to hold the braking state of the handcart,
The safety of the wheelbarrow can be improved.

Further, the invention according to claim 3 is characterized in that the brake is provided with a disk that rotates coaxially with the wheel, and the disk is braked by sandwiching the disk with a pad. In addition to the effects of the invention of
The disc and the pad can enhance the braking effect.

According to a fourth aspect of the present invention, the lock mechanism is configured to fix the operation lever of the brake to the pushrod using a lock pin.
In addition to the effects of the invention described in 2 or 3, the present invention has an extremely significant effect such as easy lock operation.

[Brief description of the drawings]

FIG. 1A is a front view of a wheelbarrow showing an embodiment of the present invention. (B) The side view of the wheelbarrow which shows one Embodiment of this invention. (C) The bottom view of the wheelbarrow, showing one embodiment of the present invention.

FIG. 2A is a front view of an operation lever of the handcart shown in FIG. 1; (B) Front view of the brake of the handcart shown in FIG. (C) The bottom view of the brake of the handcart shown in FIG. (D) AA sectional view of FIG. (E) A view on arrow B in FIG. 2 (b).

FIG. 3A shows an embodiment of the present invention and is a front view of a lock mechanism. (B) An enlarged front view of the lock pin shown in FIG. (C) An enlarged front view of the stopper shown in FIG.

FIG. 4A is a front view of a wheelbarrow showing a conventional example. (B) The side view of the wheelbarrow which shows a prior art example. (C) The bottom view of the wheelbarrow which shows a prior art example.

[Explanation of symbols]

 2 Base 3 Wheel 4 Wheelbarrow 5 Wheelbarrow 6 Brake 7 Disc 8 Pad 14 Operation lever 16 Lock mechanism 19 Lock pin

Claims (4)

[Claims] 1. A hand truck having at least a pair of left and right wheels on a lower surface of a base, and a push rod for hand pushing on one side of the upper surface of the base, wherein brakes are provided on the left and right wheels, respectively. And a wheelbarrow with a brake, wherein left and right operation levers are arranged on the pushrod to operate the brakes respectively. 2. A wheelbarrow provided with at least a pair of left and right wheels on a lower surface of a base, and a pushrod for hand pushing is provided upright on one side of the upper surface of the base. And a lock mechanism for arranging left and right operation levers on the pushrod for operating each of the brakes, and a lock mechanism for holding an operation state of the brakes. 3. The manual push with brake according to claim 1, wherein the brake is provided with a disk that rotates coaxially with the wheel, and the brake is configured to hold the disk by a pad. car. 4. The wheelbarrow with a brake according to claim 1, wherein the lock mechanism is configured to lock the operation lever by fixing the operation lever to the pushrod using a lock pin. .