KR20010107313A - Brake device for hand cart - Google Patents

Abstract

The present invention relates to a brake device for a wheelbarrow, and more particularly, in a wheelbarrow, an upper portion of the push rod 14 installed in the hollow support rod 12 is connected to the handle 10 so as to descend by pressing the handle 10. When the push rod 14 is lowered and the push rod 14 is lowered, the braking piece formed on the lever 20 rotates about the hinge 20a point. 20b) is interposed between the gears 23a formed inside the braking member 23 coupled to the hub of the rear wheel 3 to allow the rotation of the rear wheel 3 while being detached, and the handle 10 was pressed. When the pressure is released, the push rod 14 is raised by the restoring force of the compression springs 15 and 19 installed in the supporting rod 12, thereby rotating the lever 20 to the original position, and the braking piece 20b of the braking member 23 A gear formed inside is fitted between the 23a to brake the rear wheels 3. By this configuration, the present invention is easy to use because the operator brakes simply by pressing the handle, and releases the brake when the handle is released, which is convenient to use, and is caused by the movement of the cart when loading or unloading cargo. It has the effect of preventing safety accidents.

Description

Brake device for hand cart}

The present invention relates to a wheelbarrow, and more particularly, to a brake device for a wheelbarrow for braking the wheelbarrow to load and unload the cargo safely when loading or unloading the cargo.

Typically, carts are used to transport cargo, and work in a stationary state when loading or unloading cargo. At this time, when the cart is moved, work is inconvenient and there is a risk of accidents.

Therefore, conventionally, since the brakes are not installed in the cart, when loading and unloading the cargo, a separate long rod is inserted into the frame and grounded to the ground to brake the cart. However, the work is cumbersome and has to carry the Jangbong separately, there is a problem that the work is delayed if the Jangbong is lost due to the shaking of the cart while transporting the cargo.

On the other hand, the utility model registration No. 28633 of 1985 shows an example of a cart equipped with a braking device, the braking device is complicated to assemble due to the large number of parts to be assembled, high production cost, frequent failure due to many parts There was a problem that occurred.

The present invention has been made to solve the problems described above, the object of the present invention is to provide a brake device for a cart that can easily brake or release the brakes with a simple operation.

In order to achieve the above object, the brake device for a wheelbarrow according to the present invention has a hollow support rod, a handle cover fixed to an upper end of the support rod, and both ends are bent at a right angle so that the end is hinged to the inside of the handle cover to be rotatable. And, the handle is formed in the longitudinal direction at a predetermined interval at the end, the handle is installed in the interior of the support rod, the head pin penetrates through the long hole of the handle is coupled to the push rod to move downward when pressing the handle, Compression spring is installed in the support rod to elastically push the push rod upward, the wheel cover is fixed to the lower end of the support rod to accommodate the rear wheels, the operating space is coupled to the lower portion of the wheel cover, the interior has an opening on one side Is formed between the wheel axle, the bearing between the wheel axle and the hub of the rear wheel to smooth the rotation of the rear wheel, the rear wheel Braking member coupled to the hub and the gear is formed along the inner diameter, bent at a right angle and one side is hinged to the push rod, the other side is inserted into the operating space of the wheel shaft and hinged to the end of the rotation is possible inside the working space , And a part thereof includes a lever in which a gear of the braking member is selectively inserted therebetween according to the operation of the push rod to form a braking piece for braking the rear wheel.

1 is an overall perspective view of a cart installed with a braking device according to the present invention;

2 is a cross-sectional view showing the configuration of a brake device for a wheelbarrow according to the present invention;

Figure 3 is a cross-sectional view showing a coupling state of the push rod and the handle in the present invention,

Figure 4 is a sectional view showing an operating state of the brake device for a wheelbarrow according to the present invention.

◎ Explanation of symbols for main part of drawing

1: cart 2,3: front wheel, rear wheel

10: handle 10a: hinge

10b: Chapter 11: Handle Covers

12: support rod 12a: base jaw

13: auxiliary handle 14: pushrod

14a: head 14c: head pin

15: compression spring 16: adjusting bolt

17: Wheel cover 18: Lever rod

18b: hinge 19: compression spring

20: lever 20a: hinge

20b: Braking 21: Wheel axle

21a: working space 22: bearing

23: braking member 23a: gear

24: bush

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall perspective view of a wheelbarrow installed with a braking device according to the present invention, Figure 2 is a cross-sectional view showing the configuration of the braking device for the present inventors, Figure 3 is a cross-sectional view showing a coupling state of the push rod and the handle in the present invention. 4 is a cross-sectional view showing an operating state.

Referring to Figure 1, the cart 1 is provided with a front wheel (2) and a rear wheel (3) each two before and after the frame so that the operator can carry the cargo. Then, the rear wheel (3) is provided with a braking device to prevent the cart (1) from flowing when loading and unloading the cargo.

Referring to Figures 2 and 3, the braking device, each of the support rods 12 assembled on both rear sides of the cart 1 is made of a hollow, the handle cover 11 is covered with a fixed upper portion, the wheel at the bottom The cover 17 is fixed.

In addition, one side of the inner support jaw (12a) is formed on which the spring to be described later is formed, the upper portion of the support rod 12 is formed with a through hole (12b) is fitted with the handle 10 is fitted, the upper surface of the adjustment bolt ( 16 is fastened to adjust the tension of the spring while pressing the handle (10).

Both sides of the handle 10 are bent at right angles, and the ends of the bent portions pass through the through holes 12b of the support rod 12 and are hinged 10a inside the handle cover 11 to be rotatably supported. . In addition, the bent portion is formed with a long hole (10b) in the longitudinal direction at a predetermined distance from the end.

The auxiliary handle 13 is disposed at a lower portion of the handle 10 at predetermined intervals, and the auxiliary handle 13 is fixed to one upper side of the support rod 12. Here, it is preferable that the auxiliary handle 13 maintains an interval to be held together by pressing the handle 10 downward.

The push rod 14 is coupled to the inside of the support bar 12 so as to be operated up and down.

A larger diameter head portion 14a is formed at the upper end of the push rod 14, and a guide groove 14b having a predetermined depth is formed on the upper surface of the head portion 14a so that the handle 10 is inserted. The head pin 14c is fitted to one side of the upper end of the 14a so as to pass through the long hole 10b of the handle 10.

A compression spring 15 is interposed between the head portion 14a and the support jaw 12a to elastically support the head portion 14a in the upward direction.

The lever rod 18 is in close contact with the lower portion of the push rod 14 so that the push rod 14 descends when the push rod 14 descends. In addition, a larger diameter head portion 18a is formed at the upper end of the lever rod 18, and a compression spring 19 is interposed between the head portion 18a and the wheel cover 17 so that the lever rod 18 is disposed. Support elastically upward. Here, the upper surface of the head portion 18a of the lever rod 18 is inclined so as to be guided to the center when the push rod 14 descends.

One end of the lever 20 bent at a right angle is coupled to the hinge 18b at the lower end of the lever rod 18, and the other end of the lever 20 is inserted into the wheel shaft 21 and the hinge 20a in the wheel shaft 21. ) Are combined.

The wheel shaft 21 is fixedly coupled to the inner lower end of the wheel cover 17, there is formed an operating space (21a) of which one side is opened so that the lever 20 is inserted and operable, the operating space (21a) The lever 20 is inserted into. In addition, one side of the lever 20 is provided with a braking piece 20b extending to protrude to the outside through the opening of the operating space 21a of the wheel shaft 21, the braking piece 20b is the lever rod 18 When lowered, the lever 20 rotates about the hinge 20a point and is inserted into the operating space 21a together.

Between the wheel shaft 21 and the rear wheel 3, two bearings 22 are interposed at predetermined intervals to facilitate the rotation of the rear wheel 3, and the braking member 23 is interposed between the bearing and the bearing. ) Is interposed and coupled to the hub of the rear wheel (3) to rotate with the rear wheel (3).

In addition, a gear 23a is formed inside the braking member 23 along an inner circumference, and the above-described braking piece 20b is selectively fitted therein, and the braking piece 20b is disposed between the gear 23a. When fitted, the rear wheels 3 are braked.

In addition, in order to prevent the bearing 22 from being moved along the wheel shaft 21, the brake member 23 serves as a bush between the bearing and the bearing, and between the bearing 22 and the wheel cover 17. There is a separate bush 24 is coupled.

Now, the operation and operation of the present invention thus configured will be described.

Looking at the stationary cart 1, as shown in FIG. 2, between the gears 23a of the braking member 23 in which the braking piece 20b of the lever 20 is coupled to the hub of the rear wheel 3. It is inserted into and brakes the rear wheel (3) to keep the cart (1) does not move and stop.

If you want to move the goods in the cart (1), then push the handle 10 of the cart (1) while pushing.

As shown in FIG. 4, when the handle 10 is pressed, the handle 10 rotates about the hinge 10a point, and the head pin 14c coupled to the long hole 10b is pressed. Then, as the head pin 14c descends, the push rod 14 integrally formed also descends, and the push rod 14 presses the lever rod 18 while descending.

When the push rod 14 is lowered, the lever 20 is also lowered. At this time, the lever 20 is hinged because one end is coupled to one side of the operating space 21a of the wheel shaft 21. It will rotate around the point. Then, the braking piece 20b formed on the lever 20 is inserted into the operating space 21a of the wheel shaft 21 while the gear of the braking member 23 is separated from the gear 23a so that the rear wheel 3 can be rotated. do.

Due to this principle, when the worker pushes the cart 1 while holding the handle 10, the worker can move the cart to the desired place. At this time, the auxiliary handle 13 disposed on the lower portion of the handle 10 helps to more easily maintain the pressed state of the handle. That is, when the operator grabs the auxiliary handle 13 together with the handle while pressing the handle 10, it is possible to maintain the pressed state of the handle with less force.

When the worker moves the cart 1 to a desired position, and then wants to brake the cart 1 for unloading the loaded object, it is only necessary to release the handle 10 that has been pressed.

When the handle 10 is released, the lever rod 18 and the push rod 14 are raised by the restoring force of the compression springs 15 and 19 as shown in FIG. 2, and the lever connected to the lever rod 18 ( As one end of 20 is raised, the lever 20 is rotated to its original position about the hinge 20a point.

Then, the braking piece 20b formed on the lever 20 protrudes into the opening of the wheel shaft 21 to be fitted between the gears 23a of the braking member 23, thereby limiting the rotation of the braking member 23. The rear wheel 3 will be braked.

Here, if the restoring force of the compression spring 15 is weakened, while tightening the adjusting bolt 16 fastened to the upper surface of the support rod 12, press the compression spring 15 to have an appropriate restoring force, and restoring force of the compression spring 15. What is necessary is just to loosen this washing | cleaning adjustment bolt 16, and to have moderate restoring force.

The proper restoring force of the compression spring 15 may be properly maintained by comparing the force of pressing the handle with the force of returning the handle to the original position when the handle is released.

As described above, the present invention is easy to use because the operator brakes simply by pressing the handle, and the brake is released when the handle is released, which is generated by the movement of the cart when loading or unloading cargo. It has the effect of preventing safety accidents.

Claims (4)

In the cart, Hollow support rod 12, A handle cover 11 fixed to an upper end of the support rod 12, Both ends are bent at a right angle so that the end is hinged (10a) inside the handle cover 11 is supported to be rotatable, the handle 10 has a long hole (10b) formed in the longitudinal direction at a predetermined distance from the end, The rod rod 14 is installed inside the support rod 12 and the head pin 14c penetrating the long hole 10b of the handle 10 is coupled to the upper end thereof, and the push rod 14 moves downward when the handle 10 is pressed. Wow, A compression spring 15 installed in the support rod 12 to elastically press the push rod 14 upwardly; A wheel cover 17 fixed to a lower end of the support rod 12 to receive a rear wheel; A wheel shaft 21 coupled to a lower end of the wheel cover 17 and having an operating space 21a having an opening at one side thereof; A bearing 22 interposed between the wheel shaft 21 and the hub of the rear wheel 3 to smoothly rotate the rear wheel 3; A braking member 23 coupled to the hub of the rear wheel 3 and having gears 23a formed along an inner diameter thereof; Bending at right angles, one side is hinged to the push rod 14, and the other side is inserted into the operating space 21a of the wheel shaft 21 so that the end thereof is rotatable inside the operating space 21a. 20a) is coupled, the portion includes a lever (20) formed with a braking piece (20b) is selectively fitted between the gears (23a) of the braking member (23) in accordance with the operation of the push rod 14 to brake the rear wheels Brake device for a cart, characterized in that made. According to claim 1, wherein the push rod 14 and the lever 20 is connected by a lever rod 18, the lever rod 18 is elastically supported upwardly through a separate compression spring (19) The brake device for a cart, characterized in that it includes. According to claim 1, It is fastened to the upper surface of the support rod 12 that the adjusting bolt 16 to adjust the elastic force of the compression spring 15 while pressing, releasing and tightening the upper surface of the handle (10) A brake device for a cart. The brake device according to claim 1, wherein an auxiliary handle (13) fixed to the support bar (12) is provided at a lower portion of the handle (10).