JP2017094904A - Carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carriage of which assembly work and disassembly work for a caster can be easily performed by one-touch operation.SOLUTION: A carriage which comprises a caster 200 on an under side of a block constituting the carriage via one set of fitting parts 102, 103, and in which a wheel support leg is connected to a midship part of a seat plate 201 constituting the caster 200. In the carriage, An upper front end of the fitting part 102, 103 has a stationery end part 104 in which one end side 205 of the seat plate 201 is inserted, and an upper rear end of the fitting part 102, 103 has a free end part 105 on which the other end side 207 of the seat plate 201 is loaded. The carriage has a detachable tool which is attached to and detached from a rear side wall surface 103a of the fitting part, a cross section claw part of a central wall surface part is engaged with a lower part opening end edge 107 of a lower part opening 106 of the fitting part 102, 103 when assembling, and a tongue-like wall surface part is pressed in a rear side wall surface direction of the fitting part 102, 103 thereby releasing the engaged cross section claw part.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cart that has a smaller number of parts than a conventional one when a caster is attached to a lower surface, and can be easily assembled and disassembled with one touch.

  Conventionally, this type of cart has a structure in which a caster is attached to the lower surface by using bolts or screws, or a caster seat plate that is slid and attached to a slide receiving portion (Patent Document 1). Are proposed through a connecting frame, and a caster is fixed to the load carrier block (Patent Document 2).

JP2006-062429 JP2008-120282

However, a dolly with a structure in which casters are attached with bolts and screws must have bolt holes and screw holes, and the bolt bolts and screw holes must be aligned with the screw holes and bolt holes of the caster seat plate. It must be tightened or screwed, which is very complicated in manufacturing the cart.
In this regard, Patent Documents 1 and 2 have simple operability because only the seat plate of the caster is slid on the slide receiving portion, but the mounting structure on the lower surface of the carriage is extremely complicated when sliding the seat plate of the caster. It consists of a structure. Moreover, since this slide structure is parallel to the traveling direction of the carriage, it is unstable when a heavy load is loaded.
An object of the present invention is to provide a stable carriage that can be assembled and disassembled with a single touch, with a reduced number of parts as compared with conventional ones when a caster is attached to the lower surface.

In order to solve the problem,
The present invention includes a caster on a lower surface of a base plate constituting a carriage via a set of attachment portions, and a wheel support leg connected to a central portion of a seat plate constituting the caster. In a cart having a structure in which wheels are rotatably held,
The upper front end of the mounting portion has a fixing groove for inserting one end side of the seat plate,
The upper rear end of the mounting portion has a free end portion on which the other end side of the seat plate is placed,
It has a detachable tool that can be attached and detached with one touch on the rear side wall surface of the mounting portion,
The attachment / detachment tool includes a set of cylindrical portions extending in a downward direction from a horizontal portion protruding to the front side,
A center provided with a cross-sectional claw portion that extends in a downward direction from the rear end portion of the horizontal portion in parallel with the cylindrical portion and longer than the cylindrical portion, and is bent at the extended end edge portion toward the cylindrical portion. A wall surface,
A tongue piece wall surface portion extending in a substantially V shape in a direction opposite to the cylindrical portion side from the extended end edge portion,
At the time of assembly, the cylindrical portion is fitted into a through hole provided in the attachment portion from a hole provided in the seat plate, and a lower opening of the attachment portion is applied while a cross-sectional claw portion of the central wall surface portion is applied to the attachment wall surface. Engages the edge,
At the time of disassembling, the carriage is characterized by releasing the cross-sectional claw portion engaged with the lower opening of the attachment portion by pushing the tongue piece portion toward the rear side wall surface of the attachment portion.

Therefore, when assembling the caster, first, one end side of the seat plate of the caster is inserted into the fixed end portion to fix the seat plate, and then the other end side of the seat plate is attached to the free end portion on the opposite side. After mounting, the cylindrical part of the detachable tool is fitted into the hole provided in the attachment part from the hole provided in the seat plate, and the cross-sectional claw part of the central wall surface part is applied to the attachment wall surface. Simply engaging with the lower opening edge of the mounting portion allows easy mounting.
Further, when disassembling, the claw cross-section engaged with the lower opening of the mounting portion can be released by pushing the tongue piece portion toward the rear side wall surface of the mounting portion, and then placed on the free end portion. If the insertion of the fixed end is released from the seat plate, it can be easily released.

  Therefore, as in the prior art, a bolt or screw through hole is drilled in the mounting portion on the lower surface of the base plate constituting the carriage from the mounting direction of the seat plate, and then a bolt or screw through hole is provided in the base plate. There is no need to fasten bolts or screws to these through holes. Moreover, since it is not the structure which slides the seat plate of a caster like the past, it is not necessary to take a complicated and unstable structure. Further, the cylindrical portion of the attachment / detachment tool is fitted into the hole provided in the attachment portion from the hole provided in the seat plate, and the lower opening of the attachment portion is opened while the cross-sectional claw portion of the central wall surface portion is applied to the attachment wall surface. By simply engaging with the lower opening edge of the part, the assembling operation or the disassembling operation can be made extremely simple with one touch, and attachment / detachment can be obtained very easily.

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is a perspective view of the bottom surface side. FIG. 3 is an enlarged bottom view of the main part showing a state in which one end side of the seat plate is inserted and fixed to the fixing groove and no detachable tool is attached. FIG. 4-1 is a perspective view of the attachment / detachment tool according to the present invention. FIG. 4-2 is a front view of the same. FIG. 4-3 is a plan view of the same. FIG. 4-4 is a bottom view of the same. FIG. 4-5 is a right side view of the same. FIG. 4-6 is a left side view of the same. FIG. 4-7 is a rear view of the same. FIG. 5 is an enlarged bottom view of the main part after completion of assembly with the attachment / detachment tool attached. FIG. 6 is an enlarged schematic longitudinal sectional view of the main part. FIG. 7 is an enlarged schematic cross-sectional view of the main part.

The present invention is not limited to this embodiment.
As shown in FIGS. 1 to 3, the cart 1 of this embodiment includes a plurality of casters 200 on the lower surface 101 of the platform 100. The caster 200 includes a wheel support leg 203 coupled to the lower surface center 202 of the seat plate 201, and has a structure in which the wheel 204 is rotatably held by the wheel support leg 203.

  The base plate 100 is an injection-molded product of synthetic resin and has a rectangular planar shape. A reinforcing rib 205 is stretched around the back of the part of the base plate 100 on which a load is placed.

  Reference numerals 102 and 103 denote attachment portions of casters 200 provided as reinforcing ribs on the lower surface 101 of the base plate 100, respectively. This one attachment portion 102 has a fixing groove 104 into which one end side 205 of the seat plate 201 of the caster 200 is inserted. The fixing groove 104 has a structure in which only the one end side 205 of the seat plate 201 is inserted and the end edge portion 205a is not sunk further. That is, the edge portion 205 a at the upper front end of the mounting portion 102 has a fixing groove 104 into which the one end side 205 of the seat plate 201 is inserted.

The other attachment portion 103 has a free end portion 105 on which the other end 207 of the seat plate 201 is placed. As shown in FIG. 7, the free end portion 105 has a hole 208 and a mounting portion 103, as shown in FIG. 7, in order to fix the seat plate 201 once inserted and fixed to the fixing groove 104. Holes 209 are provided. Therefore, at the time of assembling or disassembling, the carriage 1 has the attachment / detachment tool 300 that can be attached to and detached from the rear side wall surface 210 of the attachment portion 103 with a single touch, and therefore has excellent operability. In FIG. 3, reference numeral 106 denotes a lower opening, and 107 denotes a lower opening edge.

As shown in FIG. 4A, the detachable tool 300 includes a pair of cylindrical portions 301 and 302 extending downward from a horizontal portion 300a protruding to the front side, and the cylindrical portion from the rear end portion of the horizontal portion 300a. A central wall surface portion 305 provided with a cross-sectional claw portion 304 that extends in parallel with the cylindrical portions 301 and 302 and extends downward in the long direction as compared with the cylindrical portions 301 and 302, and is bent at the extended end portion 303 toward the cylindrical portion side. And a tongue-like wall surface portion 306 extending in a substantially V shape in the opposite direction to the cylindrical portions 301 and 302 from the extended end edge portion 303.

  That is, at the time of assembly, one end side 205 of the seat plate 201 of the caster 200 is fixed to the fixed end portion 104, and the other end side 207 of the seat plate 201 is placed on the free end portion 105, as shown in FIG. Similarly, the cylindrical portions 301 and 302 are fitted into the holes 209 provided in the mounting portion 103 from the holes 208 provided in the seat plate 201, and in FIG. If it engages with the lower opening edge 107 of the lower opening part 106 of the said attachment part 103, contacting with the said attachment wall surface 103a, it can fix very easily by one touch. Further, when disassembling, the cross-sectional claw engaged with the opening edge 107 of the lower opening 106 of the attachment portion 103 by pushing the tongue-like wall surface portion 306 of the attachment / detachment tool 300 toward the rear wall surface 210 of the attachment portion 103. The part 304 can be released and can be released very easily with one touch.

  Therefore, as in the prior art, a bolt or screw through hole is drilled in the mounting portion on the lower surface of the base plate constituting the carriage from the mounting direction of the seat plate, and then a bolt or screw through hole is provided in the base plate. There is no need to fasten bolts or screws to these through holes. Moreover, since it is not the structure which slides the seat plate of a caster like the past, it is not necessary to take a complicated and unstable structure. In addition, the attachment / detachment tool 300 can be attached very easily with one touch.

  In addition, this invention is not limited to said embodiment. For example, although the above example has a set of the same mounting structure on the rear side, the mounting structure of the present invention can be adopted for the front part or all casters. In addition, the cylindrical portions 301 and 302 of the detachable portion can have a shape other than a cylindrical shape such as a quadrangular prism or a triangular prism. In this case, the hole 209 of the mounting portion 103 on the receiver side of the main body and the hole of the seat plate 201 208 needs to have a similar shape. In any case, the present invention is not limited to the above embodiment.

1 bogie 100 base 101 lower surface 102 attachment portion 103 attachment portion 104 fixed end portion 105 free end portion 106 lower opening portion 107 lower opening edge 200 caster 201 seat plate 205 one end side 207 other end side 208 hole 209 hole 300 attachment / detachment tool 300a Horizontal portion 301 Cylindrical portion 302 Cylindrical portion 303 Extended edge portion 304 Cross-sectional claw portion 305 Central wall surface portion 306 Tongue piece wall surface portion

Claims (1)

A caster is provided on the lower surface of the base plate constituting the carriage via a set of attachment parts, and a wheel support leg is connected to the central part of the seat plate constituting the caster, and the wheel can be rotated on the wheel support leg. In the cart consisting of the structure held in
The upper front end of the mounting portion has a fixed end portion into which one end side of the seat plate is inserted,
The upper rear end of the mounting portion has a free end portion on which the other end side of the seat plate is placed,
It has a detachable tool that can be attached and detached with one touch on the rear side wall surface of the mounting portion,
The attachment / detachment tool includes a set of cylindrical portions extending in a downward direction from a horizontal portion protruding to the front side,
A center extending from the rear end portion of the horizontal portion in parallel to the cylindrical portion and extending downward in a longer direction than the cylindrical portion, and a claw cross-sectional portion that is bent toward the cylindrical portion side at the extended end edge portion. A wall surface,
A tongue piece wall surface portion extending in a substantially V shape in a direction opposite to the cylindrical portion side from the extended end edge portion,
When assembling, the cylindrical portion is fitted into the hole provided in the attachment portion from the hole provided in the seat plate, and the lower opening end of the attachment portion is applied while the cross-sectional claw portion of the central wall surface portion is applied to the attachment wall surface. Engage the rim,
A cart in which the claw portion engaged with the lower opening of the lower opening of the mounting portion is released by pushing the tongue-like wall surface portion toward the rear side wall surface of the mounting portion during disassembly.

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