JPH0333581Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention relates to a vehicle for transporting products such as vegetables, fish, and meat used in supermarkets, restaurants, etc.

(Prior art) The present inventor wrote in Utility Model Publication No. 54-17945,
Front, rear, left and right tubular struts b with rolling wheels a mounted on the lower ends
The mantle parts d disposed at the four corners of the plurality of shelf boards c are fitted, and a spacing tube e is interposed between each mantle part d of the vertically adjacent shelf boards c. , the pillar b
We proposed a transport vehicle with a cap fitted on the top end.

(See Figures 9 and 10) (Problems to be solved by the invention) In workplaces of supermarkets and restaurants, the transport vehicle is frequently taken in and out of refrigerators and freezers. At this time, there is a large temperature difference between the refrigerator or freezer and the workplace.

In order to prevent the workers handling the transport vehicle from feeling cold and to reduce the weight of the transport vehicle, the shelf board and the spacing tube are made of synthetic resin.

However, since synthetic resin has low strength, it is necessary to make the tubular support made of synthetic resin to reinforce the shelf board and the spacing tube.

However, since the expansion coefficients of metals and synthetic resins are significantly different, the degree of expansion and contraction of the two differs when the transport vehicle is placed in and out of a refrigerator or freezer. A gap t is created between the shelf board c and the sleeve part d due to contraction,
The transport vehicle becomes loose. (See Figure 12) (Means for solving the problem) The present invention was proposed with the aim of solving the above problem. The mantle parts arranged at the four corners of the plurality of synthetic resin shelf boards are fitted into the metal supports, and synthetic resin spacing tubes are provided between the mantle parts of the vertically adjacent shelf boards. interposed in a nut held in a nut holder fitted to the upper end of the pillar,
In a transport vehicle formed by screwing a bolt inserted into an elastic cap fitted into a mantle part of the uppermost shelf board, the mantle part of the shelf board and a spacing tube adjacent to the mantle part; This relates to a transport vehicle characterized by having a tubular cushion material made of rubber interposed therebetween.

(Function) Since the transport vehicle according to the present invention is configured as described above, when it is in a hot workplace, the composite resin part expands more than the metal support.
A rubber tubular cushion material having elasticity interposed between the mantle part of the shelf board and the spacing tube adjacent to the mantle part is compressed between the two and elastically contracts. It absorbs the expansion difference between the resin part and the metal support.

Furthermore, when the transport vehicle is placed in a freezer or refrigerator, the synthetic resin parts will shrink more than the metal supports, but the rubber tubular cushion material will elastically stretch and the synthetic resin parts will shrink more than the metal supports. Absorbs the difference in shrinkage between metal struts.

(Effects of the invention) As described above, according to the invention, a telescopic rubber tube is installed between the mantle of the uppermost synthetic resin shelf board and the uppermost synthetic resin spacing tube in the transport vehicle. By interposing the tubular cushion material, it absorbs the difference in expansion and contraction that occurs between the synthetic resin part and the metal support of the transport vehicle, and prevents the transport vehicle from rattling or loosening. It is possible to do so.

(Example) The present invention will be described below with reference to the illustrated embodiments.

Reference numeral 1 denotes a tubular metal column on the front, rear, left and right sides with a rolling wheel 2 mounted on the lower end, and each column 1 is fitted with a mantle section 4 arranged at the four corners of a plurality of synthetic resin shelf boards 3. is,
A spacer tube 5 made of synthetic resin is fitted onto the support 1 between the mantle portions 4 of the vertically adjacent shelf boards 3. In the figure, 5' indicates the tube part 4 of the lowest shelf board 3 and the support column 1.
This is a synthetic resin spacing tube fitted into the support column 1 between the mounting frame piece 6 of the roller wheel 2 attached to the lower end of the column.

Furthermore, a rubber extensible tubular cushion member 7 is fitted onto the support column 1 between the sleeve portion 4 of the uppermost shelf board 3 and the uppermost spacing tube 5.

A nut holder 8 is fitted into the upper end of the pillar 1, and a locking tongue piece 10 cut and raised from the pillar 1 is engaged with an annular recess 9 provided on the outer peripheral surface of the holder 8. A nut holder 8 is fixed to 1.

A square nut 12 is installed in a vertical hole 11 provided along the axial direction of the nut holder 8, and an elastic cap 13 made of rubber or the like is fitted onto the sleeve portion 4 of the uppermost shelf board 3. A tightening adjustment bolt 14 loosely inserted into the nut 12 is screwed into the nut 12.

FIG. 6 shows details of the nut holder 8, in which a horizontal square hole 15 communicating with the vertical hole 11 is bored in the side surface of the holder, and a square nut 12 is inserted into the holder through the square hole 15. It's getting old. Further, a collar piece 16 is provided at the upper end of the nut holder 8 to be engaged with the upper edge of the support column 1.

The illustrated embodiment is configured as described above, so that when the transport vehicle is in a hot workplace, the synthetic resin spacing tube 5 and the mantle portion 4 of the shelf board 3 are When it expands significantly, the rubber cushion material 7 is compressed between the sleeve 4 of the uppermost shelf board 3 and the uppermost spacing tube 5, and elastically expands as shown in FIG. It contracts to absorb the difference in expansion between the metal support 1, the synthetic resin spacing tube 5, and the synthetic resin shelf board 3.

Furthermore, when the transport vehicle is inside a refrigerator or freezer and the synthetic resin spacing tube 5 and the synthetic resin shelf board 3 contract more than the tubular metal support 1, the rubber cushion material 7 that has contracted The compressive force is released or reduced, and the elastic force expands as shown in FIG. Absorb.

In addition, if loosening occurs between the assembly parts of the transport vehicle during use, the tightening adjustment bolt 14
This is to remove looseness by tightening and adjusting.

As described above, according to the embodiment, a rubber annular cushion material is provided between the mantle portion 4 of the uppermost synthetic resin shelf board 3 and the uppermost synthetic resin spacing tube 5 in the transport vehicle. 7 to tubular metal support 1
The cushion material 7 absorbs the difference in expansion and contraction that occurs between the synthetic resin part and the metal support of the transport vehicle, thereby preventing rattling and loosening of the transport vehicle. It's watery.

[Brief explanation of the drawing]

Fig. 1 is a slope view showing an embodiment of the carrier vehicle according to the present invention, Fig. 2 is a front view thereof, Fig. 3 is a plan view thereof, Fig. 4 is a partial slope view thereof, and Fig. 5 is a FIG. 6 is an exploded perspective view of the part shown in the figure, FIG. 6 is an oblique view of the nut holder, FIGS. 10 is a front view thereof, FIG. 11 is a partially enlarged longitudinal sectional view thereof, and FIG. 12 is an enlarged longitudinal sectional view showing the state of the portion shown in FIG. 11 when it is contracted. 1...Metal support, 2...Rolling wheels, 3...Shelf board,
4... sleeve tube section, 5... spacing tube, 7... tubular cushion material, 8... nut holder, 12... nut, 13... elastic cap, 14... bolt.

Claims (1)

[Scope of utility model registration request] The sleeves arranged at the four corners of the plurality of synthetic resin shelf boards are fitted into the front, rear, left and right tubular metal supports with rolling wheels mounted on the lower ends, and the above-mentioned shelf boards adjacent to each other above and below are fitted. A synthetic resin spacing tube is interposed between each of the cannula parts, and an elastic tube fitted in the cannula part of the uppermost shelf is attached to a nut held in a nut holder fitted to the upper end of the column. In a transport vehicle formed by screwing a bolt inserted into a cap, a rubber tubular cushion material is interposed between a mantle portion of the shelf plate and a spacing tube adjacent to the mantle portion. A transport vehicle characterized by: