JPS61191465A - Hand lifter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hand lifter configured to be able to ascend and descend stairs.

Conventional technology In general, when storing and taking out luggage in a light van or a vehicle exclusively for carrying luggage, a person directly stores and transports the luggage by hand, which requires a considerable amount of labor and is inefficient. For this reason, a hand lifter shown in FIG. 9 has been devised. This one has multiple wheels 10
1 and this straddle 102
a post 103 erected vertically at the rear position of the
It consists of a table 104 that can be raised and lowered using the post 103 as a guide member, and a manual operation section 105 that raises and lowers the table 1o4 via a rope.

Problems to be Solved by the Invention This hand lifter can lift and lower heavy objects on the table 104, so it is convenient for loading and unloading heavy objects onto trucks, etc.; The problem is that the hand lifter cannot be moved up and down stairs, which limits its transportation applications.

The present invention has been made in consideration of the above-mentioned problems, and an object thereof is to provide a hand lifter that can go up and down stairs and has a lifting function.

Means for Solving the Problems The technical means of the present invention for achieving the above object includes a chassis having main wheels at least at the rear, and a pair of left and right side frames that are erected at the rear of the chassis as main elements. a post, a subwheel that protrudes rearward from the post and serves as a fulcrum of a lever, an elevating body that uses the side frame as a guide and has a table member integrally, and a manual rotation mechanism that raises and lowers the elevating body. The hand lifter is constructed as follows.

Function: In normal transportation, the hand lifter with the above structure is used for loading and unloading heavy objects by raising and lowering the lifting body with a table member by operating the manual rotation mechanism, and when transporting heavy objects on stairs. The vehicle body is moved using the secondary wheels as a fulcrum of a lever, and the main wheels and secondary wheels are brought into contact with the stairs alternately to sequentially raise and lower the vehicle body, thereby making it possible to transport heavy objects with less effort.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 9.

In the figure, reference numeral 1 denotes a chassis, which has a plurality of main wheels 2, and a post 4 whose rear end is mainly composed of a pair of left and right side frames 3.
is erected, forming an L-shaped vehicle body when viewed from the side. The pair of rear main wheels 2a of the chassis 1 are provided with a freely switching type reverse prevention device, and in this embodiment, a ratchet type reverse prevention gear 5 commonly used for bicycles is used, and the post 4 is When the switching lever 6 provided above is operated to lock the locking member 14 to the reverse rotation stopper gear 6, the main wheel 2a is prevented from reversing.

A secondary wheel is provided at a position slightly above the lower end of the post 4. This secondary wheel 7 is supported by a support member 8 and the post 4
It is located in a prominent position at the rear. The support member 8 is provided to be slidable up and down with respect to a positioning member 9 provided on the post 4, and a pin (not shown) is engaged with a locking hole 11 of the positioning member 9 by operating an operating body 1Q. By aligning them, their positions can be fixed. The secondary wheel 7, like the main wheel 2a, is prevented from reversing by a freely switching type reversing prevention device. That is, it has a reverse rotation prevention gear 12, and the switching lever 13 locks the engaging member to the reverse rotation prevention gear 12, thereby preventing reverse rotation. Further, the support member 8 is formed by connecting two members 8a and 8b, and a rotation mechanism is provided at the connecting part,
The member 8b provided with the secondary wheel 7 is foldable.

The members 8a and 8b are provided with positioning means,
That is, the member 8a has locking recesses 1sa at two locations on the outer side.
. 15b so that it fits tightly.

The pair of left and right side frames 3 of the post 4 have a pair of upper and lower guide rollers 1 that sandwich the side frames 3.
7 is provided with an elevating body 18.

This elevating body 18 is provided with a sheep wheel 19 and integrally has a table member 20 that projects in front of the post 4.

Further, a bracket is attached to the horizontal rod of the post 4 at a position above the elevating body 18, and a manual rotation mechanism 24 consisting of a handle 21, a latch 22, and a sheep wheel 23 is provided on this bracket. A wire 25 is connected to the sheep wheel 19 of the lower elevating body 18.

When using the above configuration on a normal floor surface, etc., the main wheel 2 is brought into contact with the floor surface etc. as shown in FIG. 24 to move the table member 20 up and down, and place the heavy object on the table member 2o. Since the table member 20 can be raised and lowered manually, it has a simple structure and is easy to operate, allowing work to be performed with little effort. In this case, the secondary wheel 7 is folded as shown by the dotted line in Figure 1 so that it does not get in the way when pushing by hand. Further, the reverse rotation prevention means in the main wheel 2 is released.

Next, when moving the hand lifter on a staircase, the secondary wheel 7 is made to protrude behind the post 4, and
Adjust and fix the height position according to the height of the stairs. Note that the table member 2o is positioned at a low position so as to support a heavy object. First, as shown in FIG. 6, the vehicle body is tilted so that the secondary wheels 7 are placed on the stairs above.

In this case, a reverse rotation prevention device is operated on the main wheel 2a and the subwheel 7. In this state, by pushing down the upper part of the post 4 using the secondary wheel 7 as a fulcrum, the main wheel 2a will float as shown in Fig. 7, and by pulling the vehicle body while floating the height of one staircase, the main wheel 2a will float as shown in FIG. As shown in Figure 8, the vehicle body has climbed one staircase. Next, by causing the post 4 to fall down and pulling the vehicle body to the height of the staircase C that is one step above the secondary wheels 7, the vehicle body ascends the stairs one by one by performing the same operation as described above. It is something.

In this way, the vehicle body can be moved up and down stairs by operating the lever, and the transportation work can be carried out with little effort.

Effects of the Invention As is clear from the description of the above embodiments, the hand lifter of the present invention can load and unload heavy objects onto trucks, shelves, etc. with little effort by operating a manual lift, and can also be used in places with stairs. The vehicle body can also be raised and lowered for transportation, and this work can be done by one worker, which is of great practical value.

[Brief explanation of drawings]

FIG. 1 is a side view of a hand lifter according to an embodiment of the present invention;
Figure 2 is a front view of the same, Figure 3 is a side view of its secondary ring, and Figure 4 is a front view of the same.
The figure is a side view of the elevating body, FIG. 6 is a perspective view of the manual rotation mechanism, FIGS. 6, 7, and 8 are explanatory diagrams of the stair ascending and descending operation, and FIG. 9 is the conventional - It is a perspective view of the drifter. 1... Chassis, 2... Main wheels, 3...
...Side frame, 4...Post, 6...
...Reverse stop gear, OK...Secondary wheel, 8...
...Support member, 12...Reverse stop gear, 18.
...Elevating body, 24...Manual rotation mechanism. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure'@2 Figure 3 Figure 4 Figure 7 Figure 8 Section 0 U)

Claims (4)

[Claims] (1) a chassis having main wheels at least at the rear; a post that is erected at the rear of the chassis and has a pair of left and right side frames as main elements; and a post that projects rearward from the post;
A hand lifter comprising a subwheel that can serve as a fulcrum of a lever, an elevating body that uses the side frame as a guide and integrally includes a table member, and a manual rotation mechanism that raises and lowers the elevating body. (2) The hand lifter according to claim 1, wherein the secondary wheel is provided on a foldable support member. (3) The hand lifter according to claim 2, wherein the support member is provided on a positioning member provided on the post so as to be slidable up and down, and the position is adjustable. (4) The hand lifter according to claim 1, wherein the main wheel and the subwheel are controlled by a freely switching type reverse rotation prevention device.