JPH04314672A - Hand lifter - Google Patents

Abstract

PURPOSE:To provide a hand lifter whereby a carriage can be stably moved in a desired direction. CONSTITUTION:A hand lifter 2 contains a lift up main unit and a lift up means 12. At least a wheel 6 is provided in a lower end part of the lift up main unit, and a grip part 8 is provided in an upper end part. The lift up means is rotatably supported to an upper position provided with the above-mentioned wheel in the lift up main unit. An engaging part 36 engageable with partly a carriage, which is a conveyed unit, is formed in one end part of the lift up means.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand lifter used to move carts for transporting various workpieces on, for example, factory assembly lines.

0002

2. Description of the Related Art The above-mentioned cart (not shown) is required to have a high degree of freedom in its movement direction, so it is generally provided with four swivel casters so that it can freely turn and move. In order to move such a trolley, conventionally, for example, a tow bar A as shown in FIG.
is used. The tow bar A is configured by a bar member B having a grip portion C provided at one end and a bent portion D formed at the other end. Such a tow bar A can move the truck by engaging the bent portion D with a part of the truck and pulling the truck with the grip portion C.

0003

However, when moving a truck using the conventional tow bar A as described above, there are the following problems to be solved.

(1) As mentioned above, the trolley has a high degree of freedom in the direction of movement, so when moving it using the conventional tow rod A, depending on the position of the center of gravity of the trolley, the trolley may move during movement. rotates, making the cart's posture unstable. (2) Since all of the casters provided on the truck are swivel casters, the direction of pulling the truck is unstable and it is difficult to change direction. (3) Since the trolley is moved using the tow bar A, it is possible to pull the trolley, but it cannot be pushed.

[0005] Therefore, the main object of the present invention is to provide an improved hand lifter that can stably move a cart in a desired direction.

Other objects of the invention will become apparent from the following description, in which embodiments of a hand lifter constructed in accordance with the invention are described in detail with reference to the accompanying drawings.

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned main object, the present invention provides a lift-up main body having at least one wheel at its lower end and a gripping section at its upper end; Lift-up means is rotatably supported at a position above the wheels of the up-up main body, and one end of the lift-up means can engage with a part of the cart, which is the object to be transported. A hand lifter characterized in that an engaging portion is formed is provided.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hand lifter improved according to the present invention will be described in detail based on embodiments with reference to the accompanying drawings. In Figures 1 to 3, the entire number is 2.
The hand lifter shown in FIG. 1 includes a lift-up main body 10 having at least two wheels 4 and 6 at the lower end and a gripping part 8 at the upper end, and wheels 4 and 6 of the lift-up main body 10. The lift-up means 12 is rotatably provided at an upper position. At one end of the lift-up means 12, engaging portions 14 and 15 are formed that can engage with a portion of a truck (not shown) that is a transported object.

The lift-up main body 10 is composed of a bar member in this example, and in the state shown in FIG. an inclined portion 1 extending upward toward the left side of 1
8. The grip part 8 is a rod member 2 of a predetermined length.
0 is fixed to the upper end of the inclined part 18 so as to be perpendicular to the inclined part 18 in the horizontal direction. The engaging parts 14 and 15 of the lift-up means 12 are arranged in the other direction of movement of the wheels 4 and 6 of the lift-up means 12 (FIG.
The protrusions 17 and 19 are provided at the ends of the protrusions 17 and 19 that protrude to the right side).

A wheel support section 22 for supporting the wheels 4 and 6 is provided at the lower end of the lift-up main body 10. The wheel support section 22 is composed of a substantially rectangular plate member, and is fixed to the lower end of the lift-up main body 10 so as to be perpendicular to the lower end. Wheels 4 and 6 are provided below both ends of the wheel support section 22, respectively. Wheels 4 and 6 are constructed of fixed casters.

The lift-up means 12 is composed of a plate member, and the lift-up means 12 is a vertical portion 16 of the lift-up main body 10.
The rotary support part 24 is rotatably supported via a bearing. The rotation support part 24 is positioned horizontally in the illustrated state. The protruding parts 17 and 19 are composed of two leg parts 26 and 28 that protrude from both ends of the rotary support part 24 to the other side in the moving direction of the wheels 4 and 6 at a predetermined interval. The engaging portions 14 and 15 are provided at the ends of the leg portions 26 and 28, respectively. The ends of each of the leg portions 26 and 28 are attached to the rotation support portion 2.
It consists of lower horizontal portions 30 and 32 located at a lower position than 4. That is, the leg portions 26 and 28 include a horizontal portion extending horizontally from both ends of the rotation support portion 24, a vertical portion extending vertically downward from the horizontal portion, and a right side in the figure from the lower end of the vertical portion. The lower end horizontal portions 30 and 32 extend horizontally to each other. In this example, the engaging portions 14 and 15 are recessed portions 34 and 3 formed in the upper surfaces of the lower end horizontal portions 30 and 32, respectively.
It consists of 6.

Next, referring to FIG. 4, the rotation support structure of the rotation support portion 24 to the vertical portion 16 of the lift-up main body 10 will be described. The rotation support part 24 is fitted into the vertical part 16 through a through hole provided in the center thereof. A flange portion 17 having a circular outer periphery is fixed to the vertical portion 16.
The thrust bearing 38 is placed across the flange portion 17.
and 40 are press-fitted. A hole 25 having a larger diameter than the flange portion 17 is formed in the rotation support portion 24 . The rotation support part 24 is positioned with respect to the vertical part 16 so that its hole 25 is located on the radially outer side of the flange part 17, and the thrust bearing is supported by bearing holders 42 and 44 fixed to the rotation support part 24 with bolts. It is rotatably supported by the vertical portion 16 via 38 and 40. Vertical section 16
A stop ring 48 is fixed to a lower position of the bearing holder 44 with a bolt 49 via a plain washer 46 . Plain washer 46 has the function of a thrust bush. The stop ring 48 rotatably holds the rotary support portion 24 in a predetermined position on the vertical portion 16 . In addition, in FIGS. 1 to 3 and 5,
The illustration of the plain washer 46, stop ring 48, and bolt 49 is omitted.

Next, the operation of the hand lifter 2 constructed as above will be explained with reference to FIG. 5. wheels 4 and 6
is used to move the hand lifter 2 to position the lower end horizontal portions 30 and 32, which are the ends of the leg portions 26 and 28 of the lift-up means 12, below the frame 52 located on one side of the truck 50. As described above, the trolley 50 includes four swivel casters 51. frame 5
The peripheral edge portion of No. 2 is generally constituted by an edge plate 54 extending vertically downward. By pushing down the grip part 8 using the wheels 4 and 6 as fulcrums, the lower horizontal part 3
Recesses 34 and 36 which are engaging parts formed in 0 and 32
is engaged with the lower end of the edge plate 54, which is the engaged portion. By further pushing down the grip 8, one side of the truck 50 is lifted up. The hand lifter 2 of the trolley 50
The two swivel casters 51 on the sides float off the floor and become free. As a result, the hand lifter 2 of the trolley 50
One side is supported on the floor by the wheels 4 and 6 of the hand lifter 2, and the other side is supported on the floor by the other two swivel casters 51 of the truck 50. therefore,
The trolley 50 becomes easily movable by the hand lifter 2, and using the wheels 4 and 6 of the hand lifter 2,
It is stably moved in the pulling and pushing directions.

[0014]

[Effects of the Invention] According to the present invention described above based on one implementation, the following effects can be obtained. (1) One side of the cart can be easily lifted up to a predetermined height using the hand lifter with a single touch.Furthermore, the cart can be moved using the wheels of the hand lifter, so while moving The cart is also prevented from rotating, and the cart can be moved stably. (2) Even though the casters on which the trolley is installed are all swivel casters, the direction of pulling the trolley is stable;
It is also easy to change direction. (3) It is possible to not only pull the cart, but also push it. (4) Since the hand lifter is equipped with wheels, it can be moved freely, and the cart can be lifted up simply by inserting its protrusion below the cart, so the lift-up position of the cart can be adjusted. can be set arbitrarily, and the degree of freedom of the cart can be further utilized. (5) When the protruding portion provided with the engaging portion is composed of two leg portions, the moving direction of the truck is significantly stabilized. (6) Due to the effects (1) to (5) above, workpieces can be transported safely and efficiently using a trolley, and production efficiency can be improved.

Although the present invention has been described in detail above based on examples, this invention is not limited to the above-mentioned examples, and various modifications and changes can be made within the scope of this invention. be. For example, the hand lifter uses two wheels in the above embodiment, but one
Even individuals can achieve that goal. In that case, it is preferable to make the wheels wider to improve stability. Furthermore, although the protrusion is provided at two locations in the above embodiment, it can also be provided at one location. The shape of the engaging portion may also be formed as appropriate depending on the shape of the engaged portion of the bogie that is the other party to be engaged.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a hand lifter improved according to the present invention.

FIG. 2 is a plan view of FIG. 1.

FIG. 3 is a front view of FIG. 1 seen from the right side.

FIG. 4 is a sectional view taken along the line E-E in FIG. 2;

FIG. 5 is a schematic side view showing how the hand lifter shown in FIG. 1 is used.

FIG. 6 is a schematic perspective view showing an example of a conventional tow bar.

[Explanation of symbols]

2 Hand lifter 4 and 6 wheels 8 Gripping part 10 Lift up body 12 Lifting means 14 and 15 Engagement part 16 Vertical part 17 and 19 Protruding parts 18 Slope part 26 and 28 Leg part 34 and 36 recess

Claims (5)

[Claims] Claims: 1. A lift-up body having at least one wheel provided at a lower end and a grip portion provided at an upper end, the lift-up main body being rotatably supported at a position above where the wheel is provided. 1. A hand lifter comprising: a lift-up means, the lift-up means having an engaging portion formed at one end thereof to engage with a part of a cart, which is an object to be transported. 2. The lift-up main body includes a vertical portion on which the wheel is provided, and an inclined portion extending upward from the vertical portion toward one side in the moving direction of the wheel, and the grip portion includes: The engaging portion of the lift-up means is provided at the upper end of the inclined portion, and the engagement portion of the lift-up means is provided at an end of a protrusion of the lift-up means that protrudes to the other side in the moving direction of the wheel. The hand lifter according to claim 1. 3. A wheel support section for supporting the wheels is provided at the lower end of the lift-up main body, and the wheels are provided below both ends of the wheel support section. The hand lifter according to claim 1. 4. The lift-up means includes a rotation support part rotatably supported by the lift-up main body via a bearing, and the protrusion part is spaced apart from both ends of the rotation support part by a predetermined distance. 3. The hand lifter according to claim 2, wherein the hand lifter is comprised of two leg portions protruding toward the other side in the moving direction of the wheel, and the engaging portion is provided at each end of the leg portion. 5. The end portion of each of the leg portions includes a horizontal portion located at a lower position than the rotation support portion, and the engaging portion is formed on an upper surface of each of the horizontal portions. 5. The hand lifter according to claim 4, wherein the hand lifter includes a recess.