TWI465354B - Apparatus of trundle - Google Patents

Description

Caster device

The present invention relates to a caster device.

In general, carts or larger equipment such as server cabinets, etc., are often equipped with casters at the bottom for easy movement. However, after the casters are added, a new problem arises, that is, the stability is poor, and if the support surface is uneven or the devices are slightly impacted, the displacement is liable to be inconvenient for use.

In view of the above, it is necessary to provide a positionable caster device.

A caster device for mounting on a bottom of a box, the caster device comprising a support member, a connecting member and a roller fixed to the connecting member, the support member is provided with a receiving cavity, the connecting member and the supporting member thread The roller is received in the receiving cavity, and the supporting member moves relative to the connecting member to expose the roller or cover the roller.

A caster device for mounting on a bottom of a box, the caster device comprising a support member, a connecting member and a roller fixed to the connecting member, the support member is provided with a receiving cavity and a communicating with the receiving cavity a threaded hole, the connecting member includes a threaded rod, the threaded rod is fixed to the box through the threaded hole, and the roller is received in the receiving cavity, and the supporting member is along the supporting member when the guiding member rotates around the threaded rod The threaded rod is away from or close to the box.

The caster device of the present invention supports the support member on the ground by rotating the support member relative to the connecting member to stably position the case on the ground, or the support member is brought close to the case to expose the roller to move the case.

10‧‧‧ cabinet

20‧‧‧ caster unit

21‧‧‧ fixed plate

212‧‧‧ fastening holes

214‧‧‧Fixed holes

23‧‧‧Support

232‧‧‧ Ontology

234‧‧‧Splicing parts

235‧‧‧ containment chamber

236‧‧‧Threaded holes

237‧‧‧Operation hole

25‧‧‧Connecting parts

252‧‧‧ bracket

251‧‧‧ beams

253‧‧‧Extension arm

254‧‧‧Threaded rod

256‧‧‧ fixed end

257, 262‧‧‧through holes

26‧‧‧Roller

27‧‧‧fixed pin

272‧‧‧ head

274‧‧‧ pole

276‧‧‧ external thread

28‧‧‧ fixing nut

1 is a perspective view of a preferred embodiment of a caster device of the present invention mounted to a casing.

2 is an exploded perspective view of the caster device of FIG. 1.

3 is a partial cross-sectional view of the perspective assembly view of the caster device of FIG. 2.

Referring to Figures 1 and 2 together, the caster device 20 of the present invention is mounted to the bottom of a casing 10 for ease of movement and positioning of the casing 10. The cabinet 10 can be a server cabinet, a cart, or the like.

The preferred embodiment of the caster device 20 includes a fixing plate 21, a supporting member 23, a connecting member 25 threadedly connected to the supporting member 23, a roller 26, a fixing pin 27 and a fixing nut 28.

A fixing hole 212 is formed in the middle of the fixing plate 21. A fixing hole 214 is defined in each of the four corners of the fixing plate 21.

The support member 23 includes a bell-shaped body 232 and a screw member 234 welded to the top of the body 232. The body 232 is provided with a receiving cavity 235 (see FIG. 3) for receiving the connecting member 25 and the roller 26. The screw member 234 is provided with a threaded hole 236. The threaded hole 236 is in communication with the receiving cavity 235. The main body 232 is also provided with two operating portions. In the present embodiment, the operating portions are operating holes 237 that communicate with the receiving cavity 235. In other embodiments, the operating portions may also be tabs or lugs that protrude outwardly from the body 232.

The connector 25 includes a generally U-shaped bracket 252. The bracket 252 includes a beam 251 and two opposite arms 253 that are perpendicular to the beam 251. The beam 251 extends vertically upward to form a threaded rod 254. The end of the threaded rod 254 extends a fixed end 256 having a D-shaped cross section. Each of the extension arms 253 is provided with a through hole 257. In other embodiments, the threaded rod 254 can also be welded to the beam 251.

The roller 26 is provided with a through hole 262 in the axial direction.

The securing pin 27 includes a head 272 and a stem 274 extending from the head 272. The end of the rod portion 274 is provided with an external thread 276 for fixing with the fixing nut 28.

Referring to FIG. 3 together, when the caster device 20 is assembled, the roller 26 is located between the two extending arms 253 of the bracket 252. The fixing pin 27 passes through the through hole 257 of the bracket 252 and the through hole 262 of the roller 26. . The fixing nut 28 is then fixed to the external thread 276 of the fixing pin 27 to fix the roller 26 to the connecting member 25. The threaded rod 254 of the connecting member 25 is screwed into the threaded hole 236 of the supporting member 23, and the bracket 252 of the connecting member 25 and the roller 26 are received in the receiving cavity 235 of the supporting member 23. The fixed end 256 of the threaded rod 254 passes through the fastening hole 212 of the fixing plate 21 and is welded to the fixing plate 21. At this time, the fixing plate 21 is spaced apart from the tip end of the screwing member 234 of the connecting member 25. The roller 26 is located above the plane in which the bottom surface of the support member 23 is located.

In use, a plurality of screws (not shown) are respectively passed through the fixing holes 214 of the fixing plate 21 of the caster device 20, and screwed into the bottom of the casing 10 to mount the caster device 20 to the casing 10. A hand or tool extends into the operating hole 237 of the support member 23 of the caster device 20 to rotate the support member 23 about the threaded rod 254, and the support member 23 is brought toward the casing 10 until the roller of the caster device 20 26 is exposed from the receiving cavity 235 of the corresponding support member 23. At this time, the wheel 10 of the caster device 20 can be used to move the casing 10 to save labor and facilitate the operation of the casing 10.

When the casing 10 is to be positioned on the ground, the support member 23 is reversely rotated to move the support member 23 away from the casing 10 to retract the roller 26 into the support member 23. At this time, the support member 23 is covered on the roller 26, and the bottom of the support member 23 is supported on the ground to position the casing 10 on the ground.

In other embodiments, the caster device 20 may not be provided with the fixing plate 21, and the threaded rod 254 of the connecting member 25 may be directly fixed to the bottom of the casing 10.

In other embodiments, a threaded rod may be disposed on the support member 23, and one end of the threaded rod is fixed to the box body 10, and the other end extends to the receiving cavity 235. The connecting member 25 is provided with a threaded hole through which the threaded rod passes. The body of the support member 23 is provided with a perforation to facilitate the rotation of the connector member 25 relative to the support member 23.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

20‧‧‧ caster unit

21‧‧‧ fixed plate

23‧‧‧Support

234‧‧‧Splicing parts

235‧‧‧ containment chamber

237‧‧‧Operation hole

252‧‧‧ bracket

254‧‧‧Threaded rod

26‧‧‧Roller

27‧‧‧fixed pin

28‧‧‧ fixing nut

Claims (9)

A caster device for mounting on a bottom of a box body, the caster device comprising a fixing plate fixed to the bottom of the box body, a supporting member, a connecting member and a roller fixed to the connecting member, the middle portion of the fixing plate is provided a D-shaped fastening hole, the connecting member includes a threaded rod, the end of the threaded rod extends to a D-shaped fixed end, the fixed end of the threaded rod passes through the fastening hole of the fixing plate and is welded thereto The fixing plate is provided with a receiving cavity, the connecting member is screwed to the supporting member, the roller is received in the receiving cavity, and the supporting member moves relative to the connecting member to expose the roller or cover the roller. The caster device of claim 1, wherein the support member is provided with a threaded hole communicating with the receiving cavity, and the threaded rod passes through the threaded hole and is fixed to the fixing plate. The caster device of claim 1, wherein the support member is provided with a threaded rod, one end of the threaded rod is fixed to the box body, and the other end extends to the receiving cavity, the connecting piece is provided with a threaded hole, the thread is provided The other end of the rod passes through the threaded bore. A caster device for mounting on a bottom of a box body, the caster device comprising a fixing plate fixed to the bottom of the box body, a supporting member, a connecting member and a roller fixed to the connecting member, the middle portion of the fixing plate is provided The D-shaped fastening hole is provided with a receiving cavity and a threaded hole communicating with the receiving cavity, the connecting component comprises a threaded rod, and the end of the threaded rod extends a fixed end with a D-shaped cross section. After the threaded rod passes through the threaded hole, the fixed end of the threaded rod passes through the fastening hole of the fixing plate and is welded to the fixing plate to be fixed to the box body, and the roller is received in the receiving cavity, when the supporting member is wound When the threaded rod rotates, the support member moves away from or near the box along the threaded rod. The caster device of claim 4, wherein the support member comprises a body and a screwing member fixed to the body, the receiving cavity extending through the body, the threaded hole penetrating the screwing member. The caster device of claim 5, wherein the body is provided with two operating portions that are relatively easy to rotate the support member. The caster device of claim 6, wherein the connecting member comprises a U-shaped bracket, the bracket comprises a beam and two opposite extending arms of the beam, the threaded rod extending from the beam of the bracket The bracket is received in the receiving cavity, and the roller is fixed between the opposite extending arms of the bracket. The caster device of claim 7, further comprising a fixing pin and a fixing nut, wherein the roller is provided with a through hole, and each extending arm of the bracket is provided with a through hole, and the fixing pin sequentially passes through the through hole The arm and the through hole of the roller are extended, and the fixing nut is fixed to the end of the fixing pin. The caster device of claim 8, wherein the fixing pin comprises a head portion and a rod portion extending from the head portion, and an end of the rod portion is provided with an external thread that cooperates with the fixing nut.