KR101830381B1

KR101830381B1 - Carring caster having braking device

Info

Publication number: KR101830381B1
Application number: KR1020150187808A
Authority: KR
Inventors: 문귀자
Original assignee: 주식회사 성도캐스터
Priority date: 2015-12-28
Filing date: 2015-12-28
Publication date: 2018-02-21
Also published as: KR20170077668A

Abstract

An arm (30) is connected to a yoke (20), which is rotatably pivotally supported by a bearing, on a foot plate (10) coupled to a bogie. The yoke (20) The wheel 50 is fixed to the arm 30 on the other side by a buffer spring 40 and the wheel 30 is connected to the same axis as the wheel 50, The braking means includes a braking means for preventing rotation of the wheel 50 by pedal operation on the braking bracket 60 whose one end is fixed on the line, One end of a braking pedal (70) is rotatably shaft-coupled to a lower end of the braking pedal (70), one end of a braking release pedal (80) is rotatably coupled to the other end of the braking pedal (80) and the braking bracket (60) The leaf spring 90 is provided so as to have elasticity to move the pedal 80 to the wheel 50 side while the leaf spring 90 is rotated from the one end rotatably and axially coupled to the brake release pedal 80 A portion of the braking bracket 70 extending from the side of the braking bracket 70 to the side of the braking bracket 70 is bent at a predetermined angle from the side of the braking bracket 70, The plate surface extending from the bending portion toward the braking release pedal 80 is partially protruded to the side of the wheel 50 and bent from the bending portion to the braking bracket 60, The plate surface extending to the upper side is partially cut so that the one end which is not cut out is projected upward by the shaft and the protruded end is brought into close contact with the plate surface of the braking bracket 60, With respect to the brake bracket 60 for the brake pedal 70 and the brake pedal (80) for release to that provided with elastic so as to be supported by the wheel 50 and the opposite side has a feature.

Description

{Carring caster having braking device}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transportation caster having a braking device, and more particularly, to a braking device having a braking pedal or a braking release pedal, And more particularly to a braking device having a braking device capable of releasing a braking force or releasing a braking force, thereby providing a more powerful and stable braking force and a convenience of operation.

Generally, the caster is provided at the lower end of the truck so that the truck can freely move while freely changing directions.

The caster is composed of a support plate for fastening and fixing to the carriage, a yoke rotatably connected to the central shaft at the bottom of the support plate, and a wheel fixed axially inside the yoke.

At this time, in order to alleviate the impact transmitted to the wheels due to the load of the bogie, the wheels are axially fixed to the arm rotatably connected to the yoke without axially fixing the wheels directly to the yoke, The spring may be provided.

On the other hand, bogies must not be moved for loading heavy objects or for lowering loaded objects.

To prevent the movement of the casters, it is a braking device, and in Japanese Patent No. 0630574 (September 26, 2006, name: Castor), a braking device in the casters is proposed.

The caster of the prior art is provided with a braking device for braking the wheel with a pressing force by a leaf spring on one side. When a leaf spring to which one side is fixed by a pin is pressed by a pedal, The pedal can not be rotated in the opposite direction due to the restoring force of the leaf spring at the moment when the first surface of the pedal comes into close contact with the leaf spring and comes into contact with the second surface of the pedal.

Thus, the outer peripheral surface of the wheel is pressed by the end of the leaf spring pressed by the second surface of the pedal, so that the rotation of the wheel is prevented so that the braking is performed.

However, when the interface between the first surface and the second surface during the operation of the pedal is in contact with the leaf spring, the most powerful operation force is required. In this case, the pressing force is most effective. However, The pressing force for pressing the leaf spring is considerably attenuated, so that a closure occurs in which the slip occurs on the contact surface between the wheel and the leaf spring.

If a separate stopper is connected to compensate for slippage in the leaf spring, a separate stopper must be provided, and a connection structure for connecting the stopper to the leaf spring is required.

Registration No. 0630574 (2006.09.26.)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a transportation caster having a braking device capable of exhibiting a stronger and more stable braking force by being brought into close contact with a wheel with a strongest elastic force by a leaf spring There is a main purpose.

Another object of the present invention is to provide a transportation caster having a braking device capable of easily and safely operating by separately providing a pedal for braking and a pedal for releasing brake.

In order to achieve the above-mentioned object, the present invention is characterized in that an arm is connected to a yoke which is rotatably pivotally supported by bearings on a support plate to be coupled to a bogie, and a buffer spring is provided on one side where the yoke and the arm are in close contact with each other, Wherein the braking means includes a braking means for preventing rotation of the wheel by a pedal operation on a braking bracket whose one end is fixed on the same axis line as the wheel on the arm, One end of a braking pedal is rotatably coupled to a lower end of the other end side of the braking bracket, one end of a braking release pedal is rotatably coupled to the other end of the braking pedal, Even when the leaf spring is provided so that the brake release pedal has elasticity to move to the wheel side over the brake bracket But,

The leaf spring

Wherein a plate surface is extended from one end rotatably and axially coupled to the braking release pedal to the braking bracket side and a portion where the plate surface is bent at a predetermined angle from the braking bracket side is fixed between both sides of the braking bracket The plate surface extending from the bending portion to the side of the braking release pedal is formed in such a manner that the plate surface thereof is partially projected to the side of the wheel and extends from the bent portion to the upper side of the braking bracket And the protruding end is brought into close contact with the plate surface of the braking bracket so that the braking pedal and the braking release pedal So as to be elastically supported on the opposite side of the wheel Feature.

The pressing surface formed to be curved toward the wheel side of the leaf spring is formed in a shape such that it is cut between the upper end portion and the lower end portion in the rotating direction of the wheel.

The slip prevention pad is attached to the pressing surface formed to be curved toward the wheel side of the leaf spring so as to prevent sliding when the wheel is closely contacted with the wheel.

On the other hand, the braking pedal and the braking release pedal are formed so that the lengths between the end portions of the pedal operation surfaces are the same, and the pedal operation surfaces are nipped so as not to overlap with each other.

A stable and stable braking force can be maintained simply by means of a plate spring simply by means of a castor having a braking device according to the present invention.

Further, the present invention makes it possible to more easily and safely operate the pedal operation force when braking or braking is to be released.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view illustrating a transportation caster having a braking device according to the present invention; Fig.
2 is a side view of a carrying caster with a braking device according to the present invention
3 is a side cross-sectional view illustrating a braking device of a transportation cast with a braking device according to the present invention.
FIG. 4 is a perspective view illustrating a leaf spring of a cast for transportation having a braking device according to the present invention.
FIG. 5 is an enlarged cross-sectional view of a main portion illustrating a configuration in which a plate spring of a casting for transportation having a braking device according to the present invention is provided with a non-
Fig. 6 is an operating state diagram illustrating a process of braking a wheel by a carrying casting with a braking device according to the present invention. Fig.
FIG. 7 is an operational state diagram illustrating a process of releasing a braking state of a wheel by a casting cast with a braking device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a carrying caster having a braking device according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a perspective view illustrating a transportation caster having a braking device according to the present invention, and Fig. 2 is a side view of a transportation caster having the braking device according to the present invention.

As shown in the drawings, the carrying caster of the present invention has a configuration in which the support plate 10, the yoke 20, the arm 30, the buffer spring 40, and the wheel 50 are in contradiction with the conventional configuration.

That is, the transporting caster is provided with a receiving plate 10 having a predetermined area so as to be stably fixed by bolting to a lower portion of a bogie (not shown), and a lower portion of the receiving plate 10 is rotatable So that the upper end of the yoke 20 is connected.

Although the yoke 20 is formed in various shapes, the yoke 20 is configured such that the sides thereof are spaced apart from each other by a predetermined distance from the end portion connected to the support plate 10.

However, the yoke 20 is extended to one side so that the extended ends of the yoke 20 are integrally connected horizontally.

On the other hand, a middle portion of the arm 30 is fixed to a lower portion of the yoke 20 under the support plate 10, and both side surfaces of one end of the arm 30 are connected horizontally in the same horizontal direction as the horizontal connection surface of the yoke 20, So that the buffer springs 40 are provided between the contact surfaces.

So that the wheel 50 is axially fixed to the end of the arm 30 corresponding to the end to which the buffer spring 40 is connected.

One end of the braking bracket 60 is axially fixed to a fixed shaft for axially fixing the wheel 50. The braking bracket 60 has both side surfaces extended to a position spaced apart from the outer circumferential surface of the wheel 50 The extended ends are integrally connected horizontally.

The braking bracket 60 is provided with braking means for preventing the wheel 50 from rotating.

The construction as described above is very similar to that of a carrying caster having a conventional braking device.

3 is a side cross-sectional view illustrating a braking device for a transportation cast with a braking device according to the present invention.

The braking pedal 70 is axially connected to the braking bracket 60 and the braking pedal 80 is axially connected to the braking pedal 70. In this way, The leaf spring 90 is connected to the braking bracket 60 and the braking release pedal 80.

The braking bracket 60 is fixed to the arm 30 on which the wheel 50 is axially fixed and the other end of the braking bracket 60 is spaced apart from the wheel 50 by a distance, And the opposite side end portions of the wheel 50 are integrally connected to each other.

In other words, the braking bracket 60 has a shape in which both sides of the braking bracket 60 are bent by an arm 30 on which the wheel 50 is axially fixed on the outer peripheral surface of the wheel 50.

One end of the braking bracket 60 is integrally connected to one side of the braking bracket 60, and one end of the braking pedal 70 is rotatably connected to the lower end of the upper surface.

One end of the braking release pedal 80 is rotatably connected to the other end of the braking pedal 70.

The braking bracket 60, the braking pedal 70, and the braking release pedal 80 are respectively inserted into both side surfaces of both sides of the plate so as to be bent downward at a constant height, So as to be rotatably fixed by fixed shafts.

More specifically, the first fixing shaft 61 is fixed to the intermediate position of the plate surface in the braking bracket 60, and the first fixing shaft 61 is fixed to the braking pedal 70 at one end side, (62) is axially fixed.

One end of the braking pedal 70 is simultaneously fixed to the second fixed shaft 62 of the braking bracket 60 and the third fixed shaft 71 is fixed to the other end of the braking pedal 70 , And one end of the braking release pedal (80) is simultaneously fixed to the third fixed shaft (71).

The braking release pedal 80 has a fourth fixed shaft 81 fixed to the third fixed shaft 71 and the other end corresponding to the end fixed to the shaft.

On the other hand, the braking pedal 70 and the braking release pedal 80, which are sequentially fixed from the braking bracket 60, are sequentially arranged while overlapping only the ends of the plate surface.

Particularly, the pedal operation surfaces 72 and 82 of the braking pedal 70 and the braking release pedal 80 are formed so as not to overlap with each other and to have the same or near-end lengths.

A leaf spring (90) is provided in a length from the braking bracket (60) to the braking release pedal (80).

The leaf spring 90 of the present invention is provided on the side of the wheel 50 over the brake bracket 60, the brake pedal 70 and the brake release pedal 80.

As shown in FIG. 4, the plate spring 90 is fixed to a fourth fixed shaft 81 formed at the other end of the braking release pedal 80 so that the middle portion of the plate surface is bent at a predetermined angle, .

The end of the leaf spring 90 fixed to the fourth fixed shaft 81 is projected in a ring shape at a predetermined height from the plate surface so that the plate surface is separated from the fourth fixed shaft 81 by a certain distance.

The bending portion of the leaf spring 90 is inserted so as to pass between the plate surface of the braking bracket 60 and the second fixed shaft 62 and the plate surface of the braking release pedal 80 side at the bending portion is inserted into the wheel 50 So that the pressing surface 91 is formed.

In the plate spring 90, the plate surface corresponding to the plate surface forming the pressurizing surface 91 is cut so that the plate surface is cut, and the end portion bent by cutting the cut surface 92 upwardly with the non- So that the plate surface of the leaf spring 90 has a repulsive force from the braking bracket 60 at a constant elastic force.

On the other hand, the pressing surface 91 formed to be curved so as to be in surface contact with the wheel 50 of the leaf spring 90 can be formed such that the curved surface is separated vertically in the rotating direction of the wheel 50, It is preferable that the anti-slip pad 93 is provided to prevent slipping due to close contact of the wheel 50 as shown in FIG.

In particular, it is more preferable that the pressing surface 91 is formed by a reinforcing plate having a predetermined thickness laminated on the leaf spring 90 as shown in the figure.

The braking and braking releasing operation using the carrying casting with the braking device according to the present invention will now be described.

FIG. 6 is an operational state diagram illustrating a process of braking a wheel by a transportation cast with a braking device according to the present invention.

The braking release pedal 80 is fixed by the leaf spring 90 whose one end is fixed to the braking release pedal 80 from the braking bracket 60 to the braking release pedal 80. [ The braking pedal 70 maintains a state in which the braking pedal 70 is bent at a predetermined angle from the outer peripheral surface side of the wheel 50. [

A second fixed shaft 62 for connecting the braking pedal 70 to the braking bracket 60 and a third fixed shaft 71 for connecting the braking release pedal 80 to the braking pedal 70, The fourth fixed shaft 81 connecting the leaf spring 90 to the braking release pedal 80 from the connection line is bent toward the wheel 50.

At this time, when the pedal operation surface 72 of the braking pedal 70 is stepped on, the braking pedal 70 is rotated toward the wheel 50 about the second fixed shaft 62.

The braking pedal 70 is rotated and the braking release pedal 80 connected to the braking pedal 70 and the third fixed shaft 71 simultaneously rotates.

The braking release pedal 80 is rotated so that the pressing surface 91 of the leaf spring 90 provided on the wheel 50 side of the braking release pedal 80 is first brought into close contact with the outer peripheral surface of the wheel 50, When the pedal operation surface 72 of the braking pedal 70 is further strongly pushed by the third fixed shaft 62 and the fourth fixed shaft 81, The first spring 71 is instantaneously moved toward the wheel 50 on a straight line connecting between the second fixed shaft 62 and the fourth fixed shaft 81 while the fourth spring 71 is moved to the wheel 50 side on the straight line connecting the second fixed shaft 62 and the fourth fixed shaft 81, The fixed shaft 81 is moved downward as shown in the drawing so that the pressing surface 91 of the leaf spring 90 is brought into tight contact with the wheel 50 with a strong elastic force.

The wheel 50 which is in close contact with the pressing surface 91 of the leaf spring 90 can no longer be rotated due to strong braking.

The adhesion force between the pressing surface 91 of the plate ring 90 and the outer peripheral surface of the wheel 50 due to the long use is larger than that of the second fixed shaft 62, The third fixed shaft 71 between the first fixed shaft 81 and the fourth fixed shaft 81 is gradually moved toward the wheel 50 by the elastic force of the leaf spring 80 so that the braking force can be stably maintained.

Therefore, according to the present invention, the braking force can be always maintained by the elasticity of the leaf spring 90, and the leaf spring 90 itself is tightly adhered to the wheel 50, so that the braking structure can be simply formed .

The pedal operation surface 72 of the braking pedal 70 is operated so that the wheel 50 can not be rotated and the transportation operation for getting off or riding the heavy object from the bogie can be safely performed.

When the heavy object transportation operation is completed, the pedal operation surface 82 of the braking release pedal 80 is kicked or depressed as shown in FIG.

When the pedal operation surface 82 of the braking release pedal 80 is operated using the foot, the third fixed shaft 62 and the fourth fixed shaft 81, which are located on the wheel 50 side, The shaft 71 finely moves the fourth fixed shaft 81 toward the wheel 50 by the operation of the braking release pedal 80 so as to move the second fixed shaft 62 toward the wheel 50, The third fixed shaft 71 is instantaneously repelled by the elasticity of the plate spring 90 at the moment the third fixed shaft 71 is positioned outside and the braking pedal 70 is operated The state is the same as before.

When the third fixed shaft 71 is moved toward the opposite side of the wheel 50 about the second fixed shaft 62 by the operation of the braking release pedal 80, The braking pedal 80 is also rotated by the rotation of the braking pedal 70 so that the pressing surface 91 which was in close contact with the wheel 50 is separated from the wheel 50 by a predetermined width, 50).

As described above, according to the present invention, the pedal operation surface 72 of the braking pedal 70 or the pedal operation surface 82 of the braking release pedal 80 is selectively pressed so that the braking and braking of the wheel 50 .

Particularly, in the present invention, since the elastic force of the leaf spring 90 acts on the wheel 50 when braking, the most powerful braking force can be maintained at all times.

10: base plate 20: yoke
30: arm 40: buffer spring
50: Wheel 60: Brake bracket
61: first fixed shaft 62: second fixed shaft
70: Brake pedal 71: Third fixed shaft
72: Pedal operating surface 80: Brake release pedal
81: fourth fixed shaft 82: pedal operating surface
90: leaf spring 91: pressing surface
92: incision surface 93: non-slip pad

Claims

The arm is connected to the yoke which is rotatably fixed to the support plate by a bearing coupling with the support plate to be coupled to the bogie, so that a buffer spring is provided on one side where the yoke and the arm are in close contact with each other, And a braking means for preventing rotation of the wheel by a pedal operation on the braking bracket whose one end is fixed on the same axis line as the wheel on the arm,
The braking means
One end of a braking pedal is rotatably coupled to a lower end of the other end side of the braking bracket, one end of a braking release pedal is rotatably coupled to the other end of the braking pedal, The leaf spring is provided so that the braking release pedal has elasticity to move to the wheel side over the brake bracket
The leaf spring
Wherein a plate surface is extended from one end rotatably and axially coupled to the braking release pedal to the braking bracket side and a portion where the plate surface is bent at a predetermined angle from the braking bracket side is fixed between both sides of the braking bracket And the braking force is transmitted from the bending portion to the braking release pedal through the first fixed shaft and the plate surface of the braking bracket, The plate surface extending toward the upper side of the bracket is partially cut so that the one end which is not cut out is projected upward by the shaft and the protruded end is brought into close contact with the plate surface of the brake bracket, and the braking pedal and the brake releasing So that the pedal is elastically supported on the opposite side of the wheel,
Wherein the pressing surface has a shape in which a reinforcing plate of a predetermined thickness is attached to the leaf spring, and an upper end portion and a lower end portion are cut in a rotating direction of the wheel.

The method according to claim 1,
Wherein the braking bracket is provided with a first fixed shaft and a second fixed shaft which are fixed to the intermediate and lower ends of the braking bracket in such a manner that one end of the braking pedal is fixed to the second fixed shaft, And a fourth fixed shaft is fixed to the other end of the braking release pedal, and a bent portion of the plate spring is fixed to the first fixed shaft and the second fixed shaft, And the other end side of the plate is partially cut so that the incised portion is bent in an upward direction with the unbraided end being bent upward, And the end portion is formed to be in surface-contact with the plate surface of the braking bracket.

delete

The method according to claim 1,
Wherein the leaf spring has a braking device for attaching a non-slip pad to the pressing surface formed to be curved toward the wheel so as to prevent sliding when the wheel is in close contact with the wheel.

The method according to claim 1,
Wherein the braking pedal and the braking release pedal have the same length between the end portions of the respective pressing surfaces pressed by the sole, and the pressing surfaces are formed so as to be divided so as not to overlap each other.