KR100990132B1 - Foot-brake of cart - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley braking device mounted on a trolley for carrying an article (so-called "cart") to prevent the trolley from moving when the article is loaded or unloaded.

In the brake system for a vehicle according to the present invention, the foot brake unit 200 is mounted to the case 100, and a first spring S1 is disposed between the bottom surface 110 of the case 100 and the foot brake unit 200. The brake pad 300, which is disposed and connected to the lower portion of the foot brake unit 200, is pressed onto the ground G, and the brake pads are formed by the elastic force of the second spring S2 mounted on the foot brake unit 200. The pressing condition of the ground of 300 is maintained, and the locking lever 400 is inserted into the case 100 through the lever hole 150 formed in the front of the case 100, thereby causing the shaft hole 410 of the locking lever 400. The first vertical shaft 220 of the foot brake unit 200 is fitted to the locking brake 400 and the case 100 in a state where the locking lever 400 intersects with the first vertical shaft 220. Locking lever 400 is inclined by the third spring (S3) disposed between the lower surface of the lever hole 150 of the And a first vertical axis 220 of the foot brake units 200 are locked by the shaft hole 410 and the circumferential friction of the locking lever 400 is characterized in that to maintain the lowered state.

Description

Balance Braking System {FOOT-BRAKE OF CART}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley braking device mounted on a trolley for carrying an article (so-called "cart"), which prevents the trolley from moving when the article is loaded or unloaded. When the brake foot is pressed, the foot brake unit is lowered relative to the case mounted on the trolley, so that the first spring is compressed and lowered only until the brake pads contact the ground, and the first vertical axis is about the second vertical axis. As the second spring, which is relatively lowered and fitted to the first vertical shaft, is compressed, the force that the brake pad continues to press the ground by the compressed second spring is maintained, and the foot brake unit is lowered by the locking lever. It relates to a bogie brake that is easily locked in.

Korean Utility Model Registration No. 20-0264731 (registered on February 4, 2002) introduces "Brake Brake System".

The trolley braking device is fixed to the mounting plate through which the installation hole is penetrated to the corner at the top, the outer side is fixed to the bracket is installed through the link pin is installed, the upper and lower both sides of the body portion formed with the through hole and the incision groove, An incision groove and a long hole are formed through the upper side and the central portion, respectively, and a slide tube having a stepped portion formed therethrough with a screw hole in the center on an inner circumferential surface of the inner lower portion, and inside the slide tube inserted into the body portion A shock absorbing spring is inserted and installed at the lower end, and a ground pad having a protruding bolt fastening part fastened to the screw hole of the stepped part is installed. Link pins penetrating the incision groove and the long hole is installed at the bottom, the link pins and link pins Springs with hooks formed on both sides are connected to each other, and both end portions of the link pins installed at the upper portion of the body portion are provided with release foots formed with protrusions protruding from both side ends, and both ends of the link pins provided on the body portion brackets are braked on one side. Braking links are attached to the foot plate and the engaging portion is formed on the other side is bent, and both ends of the link pins and the link pins are connected to one side of the link link and the support link formed on one side, respectively, the link link and the support On the other side of the link, the auxiliary link for connecting with the engaging portion of the braking link is coupled to each other by a coupling pin.

However, the conventional brake device for a vehicle as described above is able to maintain the braking state when the brake link is caught in the catching part, and thus the distance between the ground and the ground pad is always kept constant. If the grounding distance of the ground pad is greater than the height between the ground and the truck, the bottom plate of the truck on which the cargo is placed is inclined to one side by the braking device.

Accordingly, it is an object of the present invention to provide a braking device for a trolley, which is simple in structure and low in manufacturing cost, and which can adjust the shank moving distance of the brake pad according to the height between the ground and the bottom plate of the trolley.

 Another object of the present invention is to provide a foot brake including a first vertical axis, such that the locking lever is inclined by a third spring mounted to the case such that the first vertical axis fitted into the shaft hole of the locking lever is in contact with the circumference of the locking lever. When the unit is locked in the lowered state for braking and the first vertical axis is lowered relative to the second vertical axis, the second spring fitted to the first vertical axis is compressed so that the brake pad is grounded by the compressed second spring. It is to provide a brake device for the balance that the force to continue to press.

In the braking device for a vehicle according to the present invention for achieving the above object, when the foot brake unit is mounted on the case mounted on one side of the bogie, the foot brake unit is relatively lower relative to the case fixed to the bogie, The first spring disposed between the bottom surface of the foot brake unit and the foot brake unit is compressed, the brake pad connected to the lower portion of the foot brake unit is pressed to the ground, and the elastic force of the brake pad by the elastic force of the second spring mounted to the foot brake unit The ground pressing state is maintained and the locking lever is inserted into the case through a lever hole formed in the front of the case so that the first vertical axis of the foot brake unit is fitted in the shaft hole of the locking lever, so that the locking lever intersects the first vertical axis. In a state in which it is disposed so as to be disposed between the locking lever and the lower surface of the lever hole of the case, The locking lever is disposed to be inclined by the third spring, and the first vertical axis of the foot brake unit is locked by friction with the circumference of the shaft hole of the locking lever to maintain the lowered state.

The case has an upper opening through which the foot brake unit is fitted, a shaft hole through which the second vertical axis of the foot brake unit penetrates, and a rear portion which is in close contact with one side of the truck is relatively longer than both side portions. It is formed in the shape of a five-sided column having a width, a horizontal support portion is formed at the center of the rear portion, side flanges are formed at both side ends of the rear portion, and an upper opening to which the foot brake unit is fitted is covered by the cover, and the front portion The lever hole is characterized in that is formed.

The case is characterized in that it further comprises a guide rail formed therein.

The foot brake unit is mounted to the case so that the brake pedal member can be slid up and down, the shaft portion is formed on the lower surface of the footrest portion of the brake pedal member, the top portion of the first vertical shaft is mounted to the shaft portion, The first vertical shaft is fitted to the hollow portion of the second vertical shaft, the lower protrusion formed at the lower end of the first vertical shaft is caught by the locking protrusion formed at the upper inner circumferential surface of the second vertical shaft, and the spiral fastening portion formed at the lower inner circumferential surface of the second vertical shaft is braked. By being engaged with the bolt portion of the pad, the first vertical axis can be raised and lowered relative to the second vertical axis by a distance between the engaging projection portion of the second vertical axis and the bolt portion of the brake pad, the first vertical axis being fitted to the second vertical axis. A spring is disposed between the lower surface of the case and the brake pedal member, and a second spring fitted to the first vertical axis It characterized in that disposed between the top of the brake pedal 2, the vertical axis of the member.

The brake pedal member has an upper end of the first guide rod and an upper end of the second guide rod vertically connected to a lower surface of the footrest, and a lower end of the first guide rod and a lower end of the second guide rod are connected by a lower support part. And a shaft hole through which the first vertical axis passes.

The first vertical axis is formed in a hexagon, characterized in that the shaft hole of the locking lever corresponding thereto is also formed in a hexagon.

Thereby, when the brake braking device according to the present invention is pressed down on the footrest, the foot brake unit is lowered relative to the case mounted on the bogie so that the first spring is compressed and the brake pad only comes into contact with the ground. Can be lowered to prevent the bogie from being lifted during the braking process, the first vertical axis being lowered relative to the second vertical axis, and the second spring fitted to the first vertical axis is compressed, thereby compressing the second spring. As a result, the force that the brake pad continuously presses the ground is maintained, and the foot brake unit is easily locked while the foot brake unit is lowered by the locking lever.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 is a side view schematically showing a state in which a bogie brake device according to the present invention is mounted on a bogie. Figure 2 is a perspective view showing a balance braking device according to the present invention, Figure 3 is an exploded perspective view showing a balance braking device according to the present invention, Figure 4 is a view showing a balance braking device according to the present invention It is sectional drawing along the AA line of 2.

1 to 4, the brake device 1 for a vehicle according to the present invention has a foot brake unit 200 mounted on a case 100 mounted on one side of the truck C, and the truck C. When the foot brake unit 200 is relatively lowered with respect to the case 100 fixed thereto, the first spring S1 disposed between the bottom surface 110 of the case 100 and the foot brake unit 200 is compressed. The brake pad 300, which is connected to the lower portion of the foot brake unit 200, is compressed to the ground G, and the brake pad 300 is driven by the elastic force of the second spring S2 mounted on the foot brake unit 200. ) Is maintained in the paper pressing state, the locking lever 400 is inserted into the case 100 through the lever hole 150 formed in the front of the case 100, the shaft hole 410 of the locking lever 400 The first vertical shaft 220 of the foot brake unit 200 is fitted, so that the locking lever 400 is connected to the first vertical shaft 220. In a state where they are arranged to cross, the locking lever 400 is inclined by the third spring S3 disposed between the locking lever 400 and the lower surface of the lever hole 150 of the case 100, and the foot brake is inclined. The first vertical shaft 220 of the unit 200 is locked by friction with the circumference of the shaft hole 410 of the locking lever 400 to maintain the lowered state.

2 and 5, the case 100 has an upper opening 105 into which the foot brake unit 200 is fitted, and has a second vertical axis () of the foot brake unit 200 on the lower surface 110. 230; see FIG. 4) through which the shaft hole 115 is formed, and the back portion 121, which is in close contact with one side of the bogie C (see FIG. 1), has a relatively longer width than both side portions 122, 123. It is formed in the shape of a five-pole column, the horizontal support portion 131 is formed in the center of the rear portion 121, side flanges (132, 133) are formed on both side ends of the rear portion 121, foot brake unit An upper opening 105 into which the 200 is fitted is covered by the cover 140, and a lever hole 150 is formed in the front portion 124.

In addition, the case 100 has guide rails 160 and 165 formed therein, and the guide rails 160 and 165 are guide rods 211 and 212 of the brake pedal member 210 of the foot brake unit 200. (See FIG. 2) guides sliding up and down.

2 and 6, the foot brake unit 200 is mounted to the case 100 so that the brake pedal member 210 can slide up and down, and the footrest portion 213 of the brake pedal member 210 is mounted. An upper surface of the first vertical shaft 220 is mounted on the lower surface of the shaft, and the upper surface of the first vertical shaft 220 is mounted on the bottom surface of the second vertical shaft 230. The lower protrusion 221 formed on the lower end of the first vertical axis 220 is caught by the locking protrusion 231 formed on the upper inner circumferential surface of the second vertical axis 230, and the lower inner circumferential surface of the second vertical axis 230. The spiral fastening portion 232 formed in the fastening portion is fastened to the bolt portion 310 of the brake pad 300, such that the first vertical axis 200 is engaged with the locking projection 231 of the second vertical axis 230 and the brake pad 300. Can be moved up and down relative to the second vertical axis 230 by the distance (h1) between the bolt portion 310 of the, and the second vertical axis (2) A first spring S1 fitted to 30 is disposed between the lower surface 110 of the case 100 and the brake pedal member 210, and a second spring S2 fitted to the first vertical shaft 220 is second. It is disposed between the upper end of the vertical axis 230 and the brake pedal member 210.

The brake pedal member 210 has an upper end of the first guide rod 211 and an upper end of the second guide rod 212 vertically connected to a lower surface of the footrest 213, and a lower end of the first guide rod 211. And a lower end of the second guide rod 212 are connected by the lower support part 215, and a shaft hole 216 through which the first vertical axis 220 passes is formed in the lower support part 215.

As a result, when the first vertical shaft 220 is fixed to the shaft fixing part 214 formed in the lower surface of the footrest 213 through the shaft hole 216 of the lower support part 215, the first vertical shaft 220 is fixed. It can be fitted into the shaft hole 410 of the locking lever 400.

The first vertical shaft 220 is formed in a hexagon, and the shaft hole 410 of the locking lever 400 corresponding thereto is also formed in a hexagon.

In the bogie brake device according to the present invention configured as described above, the braking state of the foot brake unit is locked as follows.

As shown in FIGS. 7 and 8, in the state where the first vertical shaft 220 is fitted into the shaft hole 410 of the locking lever 400, the footrest 420 formed at one end of the locking lever 400 is provided. Since the locking lever 400 is disposed to be inclined by the third spring S3 so as to be disposed higher than the other end 425 of the locking lever, the contact portion 411 of the shaft hole 410 of the locking lever 400 is firstly positioned. It is in close contact with the vertical axis 220.

Thereby, when a user presses the footrest 213 of the foot brake unit 200, and the 1st vector P1 which acts on the 1st vertical axis 220 acts from top to bottom like "↓", the 3rd spring In the contact portion 411 of the locking lever 400 which is in contact with the first vertical axis 220 by S3, the second vector P2 acts as a diagonal bottom like "같이", so that the lower part of the first vertical axis 220 is lowered. The movement is not interfered by the locking lever 400, but the pressure applied by the user is eliminated, and the third vector P3 on the first vertical axis 220 is "↑" by the elastic force of the first spring S1. When acting from the bottom up as described above, the first vertical axis 220 is in contact with the contact portion 411 of the locking lever 400 by the second vector P2 component of the locking lever 400 acting diagonally downward, such as "↘". It is not lifted by friction and stops.

An operation of the balance braking device according to the present invention configured as described above will be described with reference to FIGS. 8 to 10.

As shown in FIG. 8, when the user presses the footrest 213 of the foot brake unit 200, the brake pedal member 210 is lowered relative to the case 100, so that the brake pedal member 210 is lowered. The mounted first vertical shaft 220, the second vertical shaft 230 connected to the lower end of the first vertical axis and the brake pad 300 connected to the lower end of the second vertical axis are lowered, as shown in FIG. The pad 300 comes into contact with the ground G, and the first spring S1 is compressed. At this time, as described above, the lowering of the first vertical axis 220 is not interfered by the locking lever 400.

Subsequently, as shown in FIG. 9, while the first vertical shaft 220 mounted on the brake pedal member 210 is lowered relative to the second vertical shaft 230, the second spring S2 is brake pedal. Compressed by the lower support 215 of the member 210, the lower end of the first vertical axis 220 is in contact with the upper end of the bolt portion 310 of the brake pad 300 is fastened to the lower end of the second vertical axis (230). Thus, the downward movement of the first vertical axis 220 is stopped. Then, the elastic force of the compressed second spring (S2) is transmitted to the brake pad 300 through the second vertical shaft 230, the brake pad 300 continues to press the ground (G) with a predetermined force The braking state of the truck is maintained by being pressed against the furnace ground G. In addition, as described above, since the lowered first vertical shaft 220 is locked by the locking lever 400, the foot brake unit 200 maintains the lowered state in the case 100.

Subsequently, when the locking lever 400 is pressed, the contact portion 411 of the locking lever 400, which is in contact with the first vertical shaft 210, is separated from the first vertical shaft 220, thereby compressing the second pressurized ground. The foot brake unit 200 and the brake pad 300 are raised to the state of FIG. 8 by the restoring force of the spring S2 and the 1st spring S1, and brake of a trolley | bogie is canceled | released.

As described above, when the brake braking device according to the present invention is pressed the brake footrest 213, the first spring (S1) is lowered only until the brake pad 300 is in contact with the ground (G) while being compressed, Thereafter, the first vertical axis 220 is lowered relative to the second vertical axis 230, so that the lower end portion of the first vertical axis 220 comes into contact with the upper end of the bolt portion 310 of the brake pad 300. The trolley is not lifted from the ground by the repulsive force, and the force that the brake pad 300 continuously presses the ground by the second spring S2 is maintained, and the foot brake unit ( 200 is easily locked in the lowered state.

1 is a side view schematically showing a state in which a brake device for a trolley according to the present invention is mounted on a trolley;

Figure 2 is an exploded perspective view showing the brake device for the balance according to the invention

Figure 3 is an assembled perspective view showing the brake device for the balance according to the invention

4 is a cross-sectional view taken along line A-A of FIG. 3 showing a bogie brake device according to the invention.

5 is an enlarged perspective view of the case;

6 is a cross-sectional view taken along line B-B of FIG. 3 showing a bogie brake device according to the invention.

7 is a perspective view schematically showing an example in which the first vertical shaft is fitted into the shaft hole of the locking lever while the locking lever is inclined;

8 and 9 are cross-sectional views showing the braking process of the brake device for the vehicle according to the invention

Claims (6)

When the foot brake unit 200 is mounted on the case 100 mounted on one side of the cart C, and the foot brake unit 200 is lowered relative to the case 100 fixed to the cart C, The first spring S1 disposed between the bottom surface 110 of the case 100 and the foot brake unit 200 is compressed, and the brake pad 300 connected to the lower portion of the foot brake unit 200 is grounded ( G) is pressed, the ground pressing state of the brake pad 300 is maintained by the elastic force of the second spring S2 mounted on the foot brake unit 200, and the lever hole 150 formed in the front of the case 100 The locking lever 400 is inserted into the case 100 through), and the first vertical shaft 220 of the foot brake unit 200 is fitted into the shaft hole 410 of the locking lever 400, thereby providing a locking lever. In a state in which 400 is disposed to intersect the first vertical axis 220, the lever of the locking lever 400 and the case 100. The locking lever 400 is inclined by the third spring S3 disposed between the lower surface of the yoke 150, and the first vertical shaft 220 of the foot brake unit 200 is configured to play the football of the locking lever 400. Brake braking device, characterized in that the locking by the circumference and the yoke (410) to maintain the down state. The method of claim 1, The case 100 has an upper opening 105 into which the foot brake unit 200 is fitted, and a shaft hole 115 through which the second vertical shaft 230 of the foot brake unit 200 penetrates the lower surface portion 110. ) Is formed, the back portion 121 in close contact with one side of the cart (C) is formed in the form of a five-sided column with a relatively long width compared to both side portions (122, 123), the center of the back portion 121 A horizontal support 131 is formed, side flanges 132 and 133 are formed at both side ends of the rear surface 121, and an upper opening 105 into which the foot brake unit 200 is fitted is provided in the cover 140. And a lever hole (150) formed in the front portion (124). The method of claim 2, The case 100 further comprises a guide rail (160, 165) formed therein. The method of claim 1, The foot brake unit 200 is mounted to the case 100 so that the brake pedal member 210 can be slid up and down, and the shaft fixing portion 214 is disposed on the lower surface of the footrest portion 213 of the brake pedal member 210. ) Is formed, an upper end of the first vertical axis 220 is mounted on the shaft fixing part 214, and the first vertical axis 220 is fitted to a hollow part of the second vertical axis 230, and the first vertical axis 220 is disposed. The lower protrusion 221 formed at the lower end of the second vertical shaft 230 is caught by the locking protrusion 231 formed on the upper inner circumferential surface of the second vertical axis 230, the spiral fastening portion 232 formed on the lower inner circumferential surface of the second vertical shaft 230 Since the first vertical shaft 200 is fastened to the bolt portion 310 of the brake pad 300, the distance between the locking protrusion 231 of the second vertical shaft 230 and the bolt portion 310 of the brake pad 300 is increased. (h1) can be raised and lowered relative to the second vertical axis 230, the first spring fitted to the second vertical axis 230 ( S1) is disposed between the lower surface 110 of the case 100 and the brake pedal member 210, and the second spring S2 fitted to the first vertical shaft 220 includes the upper end of the second vertical shaft 230 and the brake. Balanced braking device, characterized in that disposed between the pedal member (210). The method of claim 4, wherein The brake pedal member 210 has an upper end of the first guide rod 211 and an upper end of the second guide rod 212 vertically connected to a lower surface of the footrest 213, and a lower end of the first guide rod 211. And a lower end of the second guide rod 212 is connected by a lower support part 215, and a shaft hole 216 through which the first vertical axis 220 passes is formed in the lower support part 215. Bogie brake The method of claim 1, The first vertical shaft (220) is formed in a hexagon, and the bogie brake device, characterized in that the shaft hole (410) of the corresponding locking lever (400) is also formed in a hexagon.

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