JP7548210B2 - Separate platform for trolleys - Google Patents

Description

The present invention relates to a detachable platform for a trolley, and in particular to a detachable platform for a trolley suitable for transporting precision equipment.

When transporting precision equipment using a general cart, there is a risk of damaging the inside of the precision equipment. For this reason, in the past, separate precision equipment transport carts were used that were equipped with shock-absorbing materials and other vibration-proofing measures.

For example, Patent Document 1 discloses a transport cart with a shock absorbing device. This transport cart with a shock absorbing device can prevent damage caused by vibration when transporting products that are sensitive to vibration, such as electronic parts and precision equipment parts.
The applicant is aware of the following documents, including the above-mentioned documents, as being relevant to the present invention:

JP 2007-30858 A Japanese Patent Application Publication No. 5-170102

However, it is cost-inefficient to prepare a dedicated cart for transporting precision equipment in addition to a general cart in order to transport precision equipment.

This disclosure has been made to solve the problems described above, and aims to provide a detachable platform for a cart that can be easily attached and detached from a general cart and can be used in combination with a general cart to safely transport precision equipment.

The first aspect relates to a separate platform for a dolly.
The detachable platform for a trolley comprises a platform body, a tray installed on the platform body via a vibration-isolating member, and an openable/closable fixing device attached to a side portion of the platform body.
The opening/closing type fixing device can fix the platform body by sandwiching the platform of the cart between the opening/closing type fixing device and the platform body when the platform body is placed on the platform of the cart, and can release the fixed state.

The second aspect has the following features in addition to those of the first aspect.
The openable fixture includes a spring-loaded hinge and a fastener.
The spring hinge has a first wing attached to a side portion of the platform body and a second wing rotatably connected to the first wing via a spring. The spring hinge automatically closes by rotating the second wing toward the underside of the platform body by the restoring force of the spring.
The fastener can fix the position of the second wing portion when the spring hinge is opened and the spring is deformed.
When the fastening device is released, the spring-loaded hinge uses the restoring force of the spring to push up the platform of the trolley with the second wing portion, thereby clamping and fixing the platform of the trolley between the second wing portion and the platform main body.

The third aspect has the following features in addition to those of the second aspect.
The position at which the first blade portion is attached to the platform body can be changed in the vertical direction.

The fourth aspect has the same features as either the second or third aspect, as well as the following features.
The second wing portion has an anti-slip elastic member at a portion that comes into contact with the platform of the dolly.

A fifth aspect has the following features in addition to any one of the first to fourth aspects.
The dolly platform includes an acceleration recorder mounted on the tray for measuring and recording vibrations.

The detachable platform for carts according to the present disclosure is equipped with an anti-vibration mechanism and a detachable mechanism, and can be easily attached and detached (connected and separated) from a general cart. By using it in combination with a general cart, precision instruments can be safely transported. Since a general cart used for transporting items other than precision instruments can be used, there is no need to prepare a dedicated cart for transporting precision instruments, which has cost benefits. In addition, since the detachable platform for carts has an anti-vibration mechanism, the platform carrying the precision instruments can be separated from the cart and loaded onto the bed of a truck for transport. This eliminates the need to transfer the precision instruments. In addition, after the platform is separated from the cart, the precision instruments can be used with the precision instruments still loaded on the platform.

FIG. 2 is a perspective view for explaining a state in which the detachable platform for a dolly according to the embodiment is attached to the dolly. FIG. 2 is a perspective view for explaining a detachable platform for a dolly according to an embodiment. 10 is an enlarged view for explaining an opening/closing type fixing device of the detachable platform for a dolly according to the embodiment. FIG. 11 is an enlarged view for explaining the operation of the opening and closing type fixing device of the detachable platform for the dolly according to the embodiment. FIG.

The following describes in detail an embodiment of the present invention with reference to the drawings. Note that elements common to each drawing are given the same reference numerals and duplicated explanations are omitted.

Embodiment
FIG. 1 is a perspective view for explaining a state in which a detachable platform for a dolly according to an embodiment is attached to a dolly.
The dolly 1 includes a loading platform 10, a plurality of casters 11, and a handle 12. The loading platform 10 is, for example, a rectangular plate-like member. The plurality of casters 11 are attached to the bottom of the loading platform 10. The handle 12 is foldably attached to the rear end of the loading platform 10.

1. Separate Platform for Carriage The separate platform for carriage 20 will be described with reference to Figs.
The separate platform for a dolly 20 includes a platform body 21, a vibration-isolating member 22, a tray 23, and an opening/closing type fastener 30. The separate platform for a dolly 20 can be attached to and detached from the loading platform 10 by using the opening/closing type fastener 30.

The platform body 21 is a rectangular plate-like member whose width is approximately the same as that of the loading platform 10 and whose length is shorter than that of the loading platform 10. Preferably, an elastic member 24 with a high friction coefficient such as rubber that functions as an anti-slip material is attached to the underside of the platform body 21. In addition, the elastic member can reduce the effect of unevenness on the loading platform 10.

The vibration-proof member 22 is an elastic body capable of suppressing vibration, such as vibration-proof rubber or vibration-isolating rubber, or a vibration-proof mechanism or vibration-isolating mechanism made of a combination of a spring and a damper. The vibration-proof member 22 is provided on the upper surface of the platform body 21.

The tray 23 is installed on the platform body 21 via the vibration-isolating member 22. Precision equipment can be loaded onto the tray 23. The precision equipment includes, for example, measuring instruments (such as an oscilloscope, a memory recorder, and an analog meter). An acceleration recorder (not shown) that measures and records the acceleration of the tray 23 over time may be attached to the tray 23. By attaching an acceleration recorder to the tray 23, if an item loaded on the tray 23 is damaged, it is possible to investigate the point in time at which the damage occurred, which helps prevent recurrence. Furthermore, traceability is effective even when the platform body 21 is used separately as described below.

The opening/closing fixing device 30 is attached to the side of the platform body 21. When the platform body 21 is placed on the platform 10 of the trolley 1, the opening/closing fixing device 30 can clamp and fix the platform 10 of the trolley 1 between the opening/closing fixing device 30 and the platform body 21, and can also release the fixed state. In other words, the opening/closing fixing device 30 has the function of connecting the platform body 21 to the platform 10 and the function of separating the platform body 21 from the platform 10.

2. Structure of the Open-Close Fixture The structure of the open-close fixture 30 attached to the side of the platform body 21 will be described with reference to Fig. 3. Fig. 3(a) is a front view of the platform body 21 near the open-close fixture 30. Fig. 3(b) is a side view of the platform body 21 near the open-close fixture 30.

The open/close fixture 30 includes a spring hinge 31 and a fastener 32 such as a screw. In this specification, the spring hinge 31 includes a first wing portion 41, a second wing portion 42, and a spring 43.

The spring 43 is, for example, a torsion coil spring or a leaf spring. The spring 43 is configured to close the second wing 42 to a position where it contacts the underside of the platform body 21 by its restoring force. In other words, the spring hinge 31 automatically closes by rotating the second wing 42 toward the underside of the platform body 21 (the first wing 41) by the restoring force of the spring 43.

The first wing 41 is attached to the side of the platform body 21. The first wing 41 includes a first wing 41a and a first plate 41b. The upper part of the first plate 41b is fastened to the side of the platform body 21 by a fastener 44 such as a screw. As shown in FIG. 3B, the first plate 41b of the first wing 41 has a long hole 45 extending vertically, and the position at which the first wing 41 is attached to the platform body 21 can be changed in the vertical direction. This makes it possible to accommodate differences in the thickness of the platform 10 of the trolley 1. In addition, since the first plate 41b has two long holes 45 formed in parallel, fastening the first plate 41b at two points with the fastener 44 can reduce the rotation and loosening of the first plate 41b relative to the platform body 21.

The second blade portion 42 is rotatably connected to the first blade portion 41 via a spring 43. The second blade portion 42 includes a second blade 42a and a second plate material 42b. The second blade 42a is connected to the first blade 41a via a spring 43. Preferably, the second plate material 42b has an elastic member 47 with a high friction coefficient, such as rubber, that functions as an anti-slip material at the portion that comes into contact with the loading platform 10 of the trolley 1. In addition, the elastic member can reduce the effects of unevenness in the loading platform 10.

The fastener 32 can fix the position of the second blade 42 when the spring hinge 31 is opened and the spring 43 is deformed. As shown in FIG. 3(a), the plate 46 is fixed to the side of the first plate 41b and extends vertically downward to the side of the second plate 42b. The fastener 32 can fix the second blade 42 by fastening the plate 46 to the second plate 42b when the first blade 41 and the second blade 42 are aligned vertically in a row.

3. Operation of the Open-Close Fixture Next, the operation of the open-close fixture 30 attached to the side of the platform body 21 will be described with reference to Fig. 4. In Fig. 4, the platform body 21 is placed on the loading platform 10 of the dolly 1. Fig. 4(a) is a diagram showing a state in which the loading platform 10 of the dolly 1 and the platform body 21 can be separated. Fig. 4(b) is a diagram showing a state in which the platform body 21 is fixed to the loading platform 10 of the dolly 1 by the open-close fixture 30.

4A shows the state in which the spring hinge 31 is opened so that the first wing 41 and the second wing 42 are aligned vertically. When the fastener 32 is released in FIG. 4A, the second wing 42 rotates toward the underside of the platform body 21 (the first wing 41) due to the restoring force of the spring 43, as shown in FIG. 4B. The spring hinge 31 then pushes up the underside of the platform 10 of the cart 1 with the second wing 42 due to the restoring force of the spring 43. As a result, the spring hinge 31 clamps and fixes the platform 10 of the cart 1 between the second wing 42 and the platform body 21. At this time, the elastic member 47 of the second wing 42 pressed against the underside of the platform 10 functions as a non-slip member. In this way, with the platform body 21 fixed to the platform 10 of the cart 1, precision equipment can be placed on the tray 23 and transported safely.

In addition, the second wing portion 42 can be fixed by the fastener 44 at a position where it has been manually rotated from the state shown in FIG. 4(b) to the state shown in FIG. 4(a). This allows the platform body 21 to be separated from the platform 10 of the dolly 1. The separation is possible while the precision equipment is still placed on the tray 23.

1 and 2, two opening/closing fixtures 30 are provided on each of the left and right sides of the platform body 21, but if the fixing force of the opening/closing fixtures 30 is sufficient, one opening/closing fixture 30 may be provided on each of the left and right sides of the platform body 21. Alternatively, one opening/closing fixture 30 may be provided on each of the left and right sides of the platform body 21, and one opening/closing fixture 30 may be provided on the front side of the platform body 21, for a total of three opening/closing fixtures. By providing a total of three opening/closing fixtures 30 on the front and sides, rattling can be suppressed even if the loading platform 10 is distorted. Furthermore, the tray 23 may be provided with a belt or the like (not shown) for fixing a precision machine to be loaded on the tray 23, or a belt attachment (e.g., a through hole) (not shown) for easily attaching any belt may be provided.

4. Effects As described above, the separate platform 20 for a dolly according to the present embodiment is provided with an anti-vibration mechanism and a detachment mechanism, and is easily attached and detached (connected and separated) from a general dolly 1. By using the platform in combination with a general dolly 1, precision instruments can be safely transported. Since the general dolly 1 used for transporting instruments other than precision instruments can be used, there is no need to prepare a dedicated dolly for transporting precision instruments, which is cost-effective. In addition, since the separate platform 20 for a dolly has an anti-vibration mechanism, the platform carrying the precision instruments can be separated from the dolly 1 and transported by loading the platform on the truck bed. Therefore, it is not necessary to transfer the precision instruments. In addition, after the platform is separated from the dolly, the precision instruments can be used with the precision instruments loaded on the platform. In addition, since the platform can be used separately and the precision instruments can be transported with the tray 23 mounted on the transport vehicle, it is possible to transport the precision instruments by a general vehicle without using a vehicle with an anti-vibration function such as an air suspension vehicle, which contributes to reducing transportation costs.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the spirit of the present invention. When the numbers, quantities, amounts, ranges, etc. of each element are mentioned in the above-mentioned embodiments, the present invention is not limited to the mentioned numbers, unless otherwise specified or clearly specified in principle. Furthermore, the structures, etc. described in the above-mentioned embodiments are not necessarily essential to the present invention, unless otherwise specified or clearly specified in principle.

REFERENCE SIGNS LIST 1 Dolly 10 Loading platform 11 Caster 12 Handle 20 Separate platform for dolly 21 Platform body 22 Vibration-proof member 23 Tray 24, 47 Elastic member 30 Openable/closable fastener 31 Spring hinge 32, 44 Fastener 41 First blade 41a First blade 41b First plate 42 Second blade 42a Second blade 42b Second plate 43 Spring 45 Long hole 46 Plate

Claims (4)

The platform body,
A tray installed on the platform body via a vibration isolating member;
and an openable/closable fastener attached to a side portion of the platform body , capable of sandwiching and fastening the platform between the platform body and the platform body when the platform body is placed on the platform of the platform, and capable of releasing the fastened state ;
The opening and closing type fixture is
a spring hinge having a first wing portion attached to a side portion of the platform body and a second wing portion rotatably connected to the first wing portion via a spring, the second wing portion being rotated toward the underside of the platform body by the restoring force of the spring to automatically close;
a fastener capable of fixing the position of the second wing portion in a state in which the spring hinge is opened to deform the spring,
the spring-loaded hinge pushes up the platform of the dolly with the second wing portion by the restoring force of the spring when the fixation by the fastener is released, and fixes the platform of the dolly by sandwiching it between the second wing portion and the platform main body;
A detachable platform for trolleys characterized by the above. The position at which the first wing portion is attached to the platform body can be changed in the vertical direction;
The separate platform for a dolly according to claim 1 . the second wing portion has an anti-slip elastic member at a portion that comes into contact with the platform of the dolly;
The detachable platform for a trolley according to claim 1 or 2 , an acceleration recorder attached to the tray for measuring and recording vibrations;
The separate platform for a trolley according to any one of claims 1 to 3 ,

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