KR100327784B1 - A caster - Google Patents

Abstract

The present invention relates to a caster that can be installed in a heavy object such as a truck to enable the role of a wheel as necessary to easily move the heavy object and to stably stop and level in a necessary position if necessary. In the related art, a separate tool such as a spanner is needed to stably stop the truck at a required position or vice versa, but the caster according to the present invention has a gear wheel and a gear wheel installed to be rotatable under the connecting member. Connected and protruded downward, when the cogwheel is rotated, it is connected to the bolt and bolt rotated together, so as to be lifted according to the degree of rotation of the cogwheel, if necessary, the base and the cogwheel to prevent the bogie, etc. to move below the wheel Is installed around the wheel and the gear Consists of a gear rotating mechanism that can selectively rotate in one direction, and is very easy to adjust the height of the pedestal, especially in the trolley equipped with a heavy load to move the pedestal lower than the wheels If the support is to be stable, it provides the effect that the pedestal can be easily raised and lowered without using a separate tool.

Description

Caster {A caster}

The present invention relates to a caster, and in particular, it is installed in a heavy material, such as to enable the role of the wheel as needed to facilitate the movement of the heavy material, and if necessary to make a stable stop in the required position, and It's about a caster that allows leveling.

In general, the caster is composed of a wheel and the body on which the wheel is installed and the connecting member is installed to be rotatable on the body to be coupled to the bottom of the heavy material. Such casters are further provided with pedestals which can be moved up and down so that heavy objects and the like can be stably stopped at a necessary position as required. In this regard, a general caster will be described.

1 is a perspective view showing a conventional caster.

As shown, the caster 100 has a body 110. The body 110 is mainly made of casting, the body 110 and the wheel 120 is formed with a connecting member 130 and a support that can be coupled to the wheel 120 and the bogie, which can be lifted and installed on the pedestal ( It consists of a circular handle 150 formed with a plurality of protrusions 152 on the outer circumferential surface in order to be able to elevate the 140 and the pedestal 140. In this caster 100, by turning the handle 150 to the left or right, the pedestal 140 is elevated. That is, if necessary, the pedestal 140 can be lowered further down than the wheel 120 so that the cart on which the caster 100 is installed can be stably stopped at a necessary position. However, when the caster 100 as shown in FIG. 1 is to be lowered further down the wheels 120 than the wheel 120 in a state in which the caster 100 is mounted on a trolley for carrying a weight of several tens to hundreds of kilograms, a large force is increased. It is inconvenient to use a separate tool such as a spanner because it is necessary. In other words, a tool such as a spanner should always be provided near the place where the vehicle is to be stably fixed. In addition, when turning the handle 150 without using a tool in the conventional caster 100 as shown in Figure 1, the operation is a slight finger, such as a thumb slightly into the side hole 116 of the body 110. There is also a disadvantage that it is very inconvenient to operate the handle 150 because it is performed in the pushed state.

It is an object of the present invention to provide a caster which can stably stop a truck or the like in a required position without leveling up a tool and level it, and which can easily raise and lower the pedestal and require less power.

1 is a perspective view showing a conventional caster,

2 is a perspective view of the caster according to the present invention,

3 is an exploded perspective view of the caster of Figure 2,

Figure 4 is an exploded perspective view showing the caster of Figure 3 from a different angle,

5 is an exploded perspective view for explaining a coupling configuration of the cog wheel and the cog wheel rotating mechanism of FIGS.

6 is a view for explaining a coupling state of the upper case and the first, second rotating member of FIG.

7 is a perspective view showing a bottom view of a cog wheel.

Explanation of symbols on the main parts of the drawings

200: caster 210: body

212: wheel mounting portion 214: through hole

216: side hole 220: wheel

230: connection member 240: gear

242: tooth 244: groove

250: gear turning mechanism 252: handle

253: first rotating member 254: second rotating member

255, 256: spring 257: cam member

258: switch 260: bolt

270: pedestal

The caster for achieving the object of the present invention has a wheel, a through hole formed up and down and the side hole formed to a predetermined angle to the side and one side of the body is formed with a wheel mounting portion, rotatably installed on the body and necessary parts such as the balance In the caster having a connecting member to be fixed to the gear, the gear is installed to be rotated to the lower portion of the connecting member, connected to the cog wheel protrudes downwards, when the gear is rotated, the bolt is rotated together, coupled to the gear wheel It is installed according to the degree of rotation and is installed around the pedestal and cog wheels to prevent the movement of trolleys, etc. by moving below the wheel as needed, so that the gear can be selectively rotated in any one direction according to the switch operation. It consists of a configuration that includes a gear wheel There.

The upper gear rotating mechanism is installed to be able to rotate around the gear and the first rotation member whose end is inclined or departed at a predetermined angle in the radial direction of the gear according to the rotation angle, is installed to be able to rotate around the gear and Accordingly, the second pivot member, the end of which is inclined at a predetermined angle in the radial direction of the cog wheels or deviates, a spring for pushing the first pivot member and the second pivot member in one direction, the first pivot member or the second according to the rotation angle The cam member pushes the rotating member to selectively disengage its end from the cog wheel, the switch to rotate the cam member in the desired direction, supports the first rotating member and the second rotating member, and the gear is operated with small force. It is preferable to set it as the structure provided with the handle for enabling it to rotate also.

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

Figure 2 is a perspective view of the caster according to the present invention, Figure 3 is an exploded perspective view of the caster of Figure 2, Figure 4 is an exploded perspective view showing the caster of Figure 3 from a different angle.

As shown in FIGS. 2-4, the caster 200 which concerns on this invention is provided with the body 210. As shown in FIG. The body 210 has a through hole 214 formed up and down and a side hole 216 formed to a predetermined angle on the side. Wheel mounting portion 212 is formed on one side of the body (210). Since the body 210 receives a large load, a metal casting is mainly used. The wheel 220 is installed in the wheel mounting portion 212 of the body 210. The wheel 220 is rotatably installed to receive the shaft support therein.

The connection member 230 is installed on the body 210. The connecting member 230 is rotatably coupled to the upper side of the through-hole 214, and is intended to be able to be fixed to the required portion, such as heavy objects. In the center portion of the connecting member 230, a hole 232 communicating with the lower portion is formed, and a spiral 234 is formed on the inner circumferential surface thereof, and fastening holes 236 are respectively formed near the corners to be coupled to the balance and the like. It is good to be able to. The lower side of the connection member 230 is a bearing mechanism 239 made of a bearing 237 and a bearing support 238 is coupled to the connection member 230 on the body 210 smoothly.

The caster 200 according to the present invention is provided with a cog wheel 240. The cog wheel 240 is rotatably installed at the lower side of the connecting member 230, and is supported inside the handle 252 described later, which will be described in more detail later.

As shown, a bolt 260 is installed at the bottom of the gear 240. The bolt 260 is protruded to the bottom of the cogwheel 240, and is rotated together when the cogwheel 240 is rotated. The bolt 260 is formed integrally with the cog wheel 240 or the groove 244 is formed on the bottom surface of the cog wheel 240 so as to receive the torque of the cog wheel 240, the hole 232 It may be to be fixed by a small screw 262 through.

A pedestal 270 is shown below the cogwheel 240 as shown. The pedestal 270 is to move to the bottom of the wheel 220, if necessary, so that the balance and the like can be stopped in a stable position at a predetermined position, and in some cases can be leveled in the stopped state, the bolt ( 260 is coupled to the lifting portion according to the degree of rotation of the gear (240).

Caster 200 according to the present invention is provided with a gear wheel rotation mechanism (250). This gear rotating mechanism 250 is a part of the core of the present invention is installed around the gear 242, so as to selectively rotate the gear 240 in any one direction according to the operation of the switch 258. To help. The gear turning mechanism 250 is to allow the gear wheel 240 to be easily rotated with a small force in a desired direction, and the end thereof can be folded to prevent protruding a lot outward. The cogwheel 240 and the cogwheel rotating mechanism 250 will be described in more detail with reference to FIGS. 5 to 7.

5 is an exploded perspective view for explaining a coupling configuration of the cog wheel and the cog wheel rotating mechanism of FIGS. 2 to 4, and FIG. 6 is a view for explaining a coupling state of the upper case of FIG. 5 and the first and second rotating members. 7 is a perspective view showing a bottom view of a cog wheel.

As can be seen in FIG. 5, the gear wheel 240 is installed inside the handle 252 including the lower plate 251a and the upper case 251b, and a plurality of teeth 242 are formed along the outer circumferential surface thereof. As the center portion, holes 246 are formed, and as shown in Fig. 7, hexagonal grooves 244 are formed in the bottom thereof, respectively. Hexagon groove 244 is a portion in which the head 261 of the bolt 260 shown in the lower portion is inserted, so that the torque can be transmitted to the bolt 260. The hexagonal groove 244 may be changed into a groove having a polygonal shape other than a circle, and in some cases, the bolt 260 may be integrally formed on the bottom surface of the gear wheel 240. Coupling hole 264 formed in the head 261 of the cog wheel 240 and the bolt 260 is fixed to the cog wheel 240 with the screw 262 shown in Figures 3 and 4 It is to. Here, the bolt 260 is for elevating the pedestal 270 described above as necessary. That is, the height of the pedestal 270 coupled to the bolt 260 is determined according to the degree of rotation of the gear 240. Pedestal 270 is formed with coupling holes 274 coupled to the anti-rotation groove 272 and the bolt 260, respectively.

As can be seen in Figures 5 and 6, the gear rotating mechanism 250 of the caster according to the present invention is provided with a first rotating member 253 and a second rotating member 254. The first and second pivot members 253 and 254 are selectively caught by the teeth 242 so as to rotate the gears 240 in any one selected direction. The installation state of the first rotating member 253 and the second rotating member 254 is shown in detail in FIG. That is, the end of the first rotating member 253 is inclined at a predetermined angle in the radial direction of the cog wheel 240 or separated according to the rotation angle. In addition, the second rotating member 254 is also installed to be rotatable around the cogwheel 240 so that the end thereof is inclined at a predetermined angle in the radial direction of the cogwheel 240 according to the rotating angle thereof, as opposed to the first rotating member 253. To be squeezed or dislocated The first rotating member 253 and the second rotating member 254 are disposed to be inclined at a predetermined angle toward the gear wheel 240 in the upper case 251b, and springs 255 and 256 are moved inward from both sides thereof. It's pushing. The springs 255 and 256 serve to push the first rotating member 253 and the second rotating member 254 in one direction.

As shown in FIG. 6, the cam member 257 is provided so that a predetermined angle rotation is possible between the 1st rotation member 253 and the 2nd rotation member 254. As shown in FIG. The cam member 257 pushes the pivot member on one side outwardly according to the rotation angle so that only one of the first pivot member 253 and the second pivot member 254 can be bitten by the teeth 242. It is to. The cam member 257 is coupled to a switch 258 installed outside the upper case 251 b and operated by operating the switch 258. That is, the cam member 257 pushes the first rotating member 253 or the second rotating member 254 according to the rotational angle thereof, and serves to selectively detach the end from the gear 240. The switch 258 is for allowing the cam member 257 to rotate in a desired direction.

As shown in FIG. 5, the gear turning mechanism 250 of the caster 200 according to the present invention includes a handle 252. As mentioned above, the handle 252 includes a lower plate 251a and an upper case 251b, wherein the first and second rotating members 253 and 254 and the cam member 257 can be rotated in place. Support holes 259 are inserted into each other so as to be formed. The handle 252 serves to protect and support the first rotating member 253, the second rotating member 254, and the cam member 257 therein, and to support the gear 240 with a small force. It also serves as a lever to allow for rotation. Such a handle 252 is preferably installed so that the folding piece (251c) of the rear end portion can be folded by the pin (251d). If the gear 240 is to be rotated, the rear end may be extended, and in other cases, the gear 240 may be folded so as not to be caught by other objects.

That is, the switch 258 is turned to one side in the state as shown in FIG. Then, the cam member 257 inside the upper case 251 b rotates to push the second pivot member 254 outward. Accordingly, the end of the first rotating member 253 maintains a state of being bitten by the tooth 242, and the second rotating member 254 maintains a state of being separated from the tooth 242. In such a state, when the handle 252 is unfolded and turned counterclockwise, the first pivot member 253 rides over the teeth 242, and the handle can rotate to a sufficient angle. In this state, when the handle 252 is rotated clockwise again, the end of the first rotating member 253 is caught by the teeth 242 to rotate the gear 240 in a clockwise direction, and thus the bolt 260. It is also rotated in the same direction as the cogwheel 240. Then, the pedestal 270 coupled to the bolt 260 is raised. By repeating this process, when the bottom reaches a higher position than the wheel 220, the wheel 220 supports the load of the bogie and the like, and the bogie can be easily moved even in the state of carrying the heavy load using the wheel 220. Will be.

On the other hand, when it is desired to stably stop the trolley and the like in the required position, the switch 258 is rotated in the opposite direction from the front. Accordingly, while the inner cam member 257 is rotated, the first pivot member 253 is pushed outward and the second pivot member 254 is released. Accordingly, the end of the first rotating member 253 is separated from the tooth 242, the second rotating member 254 is rotated by the force of the spring 256 so that the end is bitten by the tooth 242. In this state, when the handle 252 is unfolded and turned clockwise, the second pivot member 254 rides over the teeth 242. That is, only the handle 252 can be rotated clockwise to a desired angle without rotating the cog wheel 240. When the handle 252 is sufficiently rotated in the clockwise direction, if the force is applied in the opposite direction again, the end of the second pivot member 254 is caught by the teeth 242, and when the force is further applied, the gears 240 Rotates counterclockwise. Accordingly, the bolt 260 coupled to the gear wheel 240 is also rotated in the counterclockwise direction, and thus the pedestal 270 is lowered. After the knob 252 is sufficiently rotated counterclockwise, it is rotated clockwise again. At this time, the second rotating member 254 again rides over the teeth 242, and after fully rotating in the clockwise direction, rotating the gearwheel 240 while rotating again in the counterclockwise direction, the pedestal 270 is lowered again. Done. Repeating this process several times, lowering the lower end of the pedestal 270 to a lower position than the lower end of the wheel 220, the pedestal 270 to support the load, such as the bogie and the wheel 220 is floating in the air Becomes That is, if such measures are taken on all four corner wheels 220, such as a trolley | bogie, the trolley | bogie etc. will be stably stopped in a required position. Of course, this process can adjust the leveling of the weight.

As can be seen from the above description, using the caster according to the present invention is very easy to adjust the height of the pedestal, and in particular, if you want to stably support or level the heavy goods by moving the pedestal lower than the wheel in heavy goods, etc. The advantage is that the pedestal can be easily raised and lowered without using a separate tool. In addition, it is possible to adjust the direction of rotation of the gear wheel and the bolt with a simple switch operation has the advantage that the operation is very simple.

Claims (2)

It has a connection member for fixing to the trolley, and the body is formed with a wheel mounting portion for supporting the wheel to be rotated, the center of the body having a bolt that is pivotally installed on the body to lift the wheel from the ground A gear wheel is installed, and a caster is coupled to the lower part of the gear wheel and is lifted according to the rotational degree of the gear wheel, and a pedestal is fastened to prevent movement of the trolley, etc. by moving below the wheel as necessary. To It is installed around the cogwheel to selectively rotate the cogwheel in any one direction according to the switch operation, it is installed rotatably around the cogwheel and the end of the cogwheel in the radial direction of the cogwheel A first pivot member that is inclined or detached at a predetermined angle, the second pivot member being rotatably installed around the cogwheel, and whose end is inclined at a predetermined angle in a radial direction of the cog wheel or detached according to the rotation angle, the first A spring for pushing the rotating member and the second rotating member in one direction, a cam member for pushing the first rotating member or the second rotating member in accordance with the rotating angle and selectively disengaging the end of the rotating member from the cog wheel, and the cam member A switch for rotating in the direction and supporting the first rotating member and the second rotating member and Caster comprising a rotating mechanism made of a handle for allowing the gear to rotate even with a small force. delete