JPH0411558A - Hand truck for accommodating automobile - Google Patents

Abstract

PURPOSE:To secure the loading space equal to that in the conventional and transfer a load in an easy attitude by installing a means for urging four front and rear supporting legs installed in foldable manner on the undersurface of a table, always in erection direction, and a looking means in erection attitude. CONSTITUTION:When a hand truck 5 is used, a stopper plate 3 is turned to this side, and a handle 7 is pulled to this side, and turned upward, and locked in an erection attitude. The hand truck 5 is pulled out from an accommodation recessed part 5 by pulling out the handle 7 furthermore. If each length of the supporting legs 8 and 9 is set so that the upper surface height of a table 6 in the case where the supporting legs 8 and 9 are in erection becomes equal to the upper surface of a load carrying platform 1, transfer of a conveyed load from the load carrying platform 1 to the hand truck 5 can be carried out easily. When the hand truck 5 is accommodated into the accommodation recessed part 2 of the load carrying platform 1, the lock of the supporting legs 8 and 9 is released. When the hand truck 5 is pushed toward the accommodation recessed part 2, the supporting legs 8 and 9 are accommodated in folded state into the undersurface of the table 6. Accordingly, the table 6 can be utilized as a part of the load carrying platform 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a retractable handcart that can be stored in the cargo bed of a motor vehicle.

(Prior Art) When transporting cargo using a pan-type vehicle, a wagon, a light truck, etc., it often happens that the cargo needs to be transported to a place where it is difficult or impossible for a car to drive into. Therefore, conventionally, in preparation for such a case, a handcart is loaded onto a loading platform in advance, and the goods are transported to the location using the handcart.

(Means for solving the problem) However, since the loading platform of the above-mentioned vehicles generally does not have a storage space for a hand cart, if it is a pan-type vehicle or a wagon, it is necessary to If it is a light truck, it is loaded onto the platform or hooked onto the side panel, but these tend to get in the way of loading cargo and are difficult to handle. Moreover, because the general handcart has a low floor, it takes time and effort to transfer the cargo from the loading platform to the handcart, and the work requires bending over at the waist, which is extremely tiring. .

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a retractable hand truck for an automobile that can solve the above-mentioned conventional problems.

(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

That is, a rectangular storage recess for storing the handcart is formed in the loading platform of the vehicle, and in order to store the handcart in this storage recess, the handcart is equipped with a table formed in a rectangular flat shape and a table formed in the shape of a rectangular plate. four supporting legs in the front and rear that are foldably attached to the underside of the table; a handle that is foldably attached to the front side of the table; a means for always biasing each of the supporting legs in a standing direction; and locking means, and the supporting legs are configured to be folded by being pushed against the rear end of the storage recess of the loading platform in the unlocked state.

(Function) The handcart configured as described above is always stored in the storage recess of the loading platform with the support legs and handle folded, and in that state functions as a table or part of the loading platform,
The actual loading space of the loading platform is therefore not compromised. On the other hand, when the handle is raised from the retracted state to pull out the cart, the supporting legs, which are always subjected to a biasing force in the upright direction, rotate downward as they are pulled out from the cart or loading platform, and are locked in the upright position. At this time, by setting the length of the supporting legs so that the top surface of the table is aligned with the top surface of the loading platform, it is possible to provide a trolley with a raised floor, making it possible to transport cargo using a hand truck without much effort. becomes possible.

(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings.

FIG. 2 shows a vehicle in which a handcart is to be stored.

As shown in the figure, a substantially rectangular storage recess 2 for a handcart is formed by recessing the floor surface of the platform 1 at the center rear side thereof. The storage recess 2 has an open rear end, and a stopper plate 3 is attached to the open end via a hinge 4 so as to be openable and closable. so that it is held in the closed position.

Next, regarding the handcart 5, FIGS. 1, 3 to 7
This will be explained with reference to the figures.

As shown in FIG. 1, the handcart 5 schematically includes a table 6 for loading luggage, a foldable handle 7,
It consists of four foldable support legs 8°9 at the front and back. The table 6 is made of a rectangular flat plate having substantially the same shape as the storage recess 2 of the loading platform 1 of the vehicle, and a rectangular flange 10 is provided on the lower surface of the table 6. Further, the rear half of the table 6 is formed to be slightly narrower, and dovetail grooves 11 are provided on both sides thereof in the longitudinal direction.

The handle 7 is formed into a substantially gate shape and is arranged so as to straddle the rear side of the table 6, and both ends of the handle 7 slide into the dovetail grooves 11, respectively, as shown in FIG. The slider 12 is rotatably attached to the slider 12 through a pin 13. That is, the handle 7 is attached so that it can be raised and lowered by rotating around the pin 13, and the handle 7 can be raised and lowered together with the slider 12.
It is possible to move along 1. Therefore, handle 7
can be displaced between an upright state shown in FIG. 4 and a laid down state shown in FIG.

Further, as shown in FIG. 5, a lock pawl 15 is arranged on the four parts 14 formed on the inner surface of the handle 7, and this lock pawl 15 is supported by a pin 16 so that it can be rotated using its lower end as a fulcrum. installed. And lock claw 1
5 engages with the engagement recess 17 formed on the top surface of the platform 6 by rotating downward when the handle 7 is in the upright position, thereby locking the handle 7 in the upright position. ing.

Next, the mounting of the support legs 8 and 9 is mainly done by the structure of the sixth
This will be explained based on the diagram and FIG. 7. On the front side of the table 6 (opposite side of the handle 7), a hollow shaft 18 is horizontally suspended on the flange IO and rotatably supported via a bush 19, and a wheel is attached to the hollow shaft I8. A pair of left and right front support legs 8 having a support leg 8a are integrally attached. Thus, the front supporting leg 8 has a hollow shaft 18.
It can be folded by rotating together. Further, the supporting leg 8 is wound around the outside of the hollow shaft 18, and one end is hooked to a hooking piece 20 on the lower surface of the platform 6, and the other end is hooked to the supporting leg 8 by a torsion spring 21. It is always biased in the upright direction.

A solid shaft 22 with a smaller diameter passes through the hollow shaft 18 and is rotatably supported by a bushing 23, and a pair of left and right rear wheels are provided on the solid shaft 22 with wheels 9a. A support leg 9 is integrally attached. Note that this support leg 9 extends through an opening 18a formed in the hollow shaft 18 for avoiding interference. Thus, the rear support leg 9 can be folded by rotating together with the solid shaft 22. Further, the supporting leg 9 is arranged so as to wrap around the outer periphery of the hollow shaft I8, and one end is attached to a hooking piece 22 on the lower surface of the platform 6.
The torsion spring 25 is hooked to the support leg 9 and is always biased in the upright direction by a torsion spring 25 whose other end is hooked to the support leg 9.

Note that the front and rear support legs 8 and 9, which are made foldable as described above, have the same standing height when the front support leg 8 is in a straight state and when the rear support leg 9 is in an inclined state. The length is set so that In addition, in the case of this embodiment, the rear supporting leg 9 is connected to the flange 1 in the folded state.
In order to avoid interference, a relief notch 10a is formed in the interference part to avoid interference with the rear part of the support leg 9, but this can be omitted depending on how the length of the support leg 9 is set. .

Next, a locking mechanism for holding both the front and rear support legs 8, 9 in the upright position will be explained. As shown in FIGS. 1 and 4, one end of a pair of left and right links 26 is rotatably attached to the rear side of the flange 10 of the table 6 with a pin 27, and the other ends of both links 26 are locked. They are interconnected by rods 28. And lock rod 28
is a long hole 29 formed in the rear support leg 9 along the longitudinal direction.
When the supporting leg 9 is erected, the supporting leg 9 on the rear side is locked by being engaged with the four parts 29a formed at the lower end of the elongated hole 29. Note that at least one of the links 26 is provided with a handle 26a for unlocking operation.

Further, a slide rod 30 is rotatably connected to each upper end of the left and right links 26 via a small link 31,
This slide rod 30 is horizontally slidably supported by an appropriate number of guides 32 attached to the back surface of the table 6, and a lock piece 33 formed at the tip of the slide rod 30 is attached to the hollow shaft 1.
The front supporting leg 8 is locked in the upright position by being engaged with a notch 34 for engagement formed on the outer periphery of the end of the leg 8.

A pair of left and right auxiliary wheels 35 are attached to the lower surface of the front end of the table 6 to be used when moving the handcart 5 into and out of the storage recess 2, and these auxiliary wheels 35 preferably support the rotation of the support legs 8 and 9. It is installed in front of the center of motion.

As shown in FIG. 3, the hand truck 5 configured as described above is usually stored in the storage recess 2 of the vehicle loading platform 1 with the front and rear supporting legs 8, 9 and the handle 7 folded. It will be done. In this state, it is desirable to set the depth of the storage recess 2 and the folded height of the push cart 5 to be the same so that the top surface of the table 6 of the cart 5 is aligned with the top surface of the loading platform 1.

Now, when using the hand truck 5, that is, when transporting cargo to a place that cannot be accessed by a car, first remove the clasp of the stopper plate 3 of the storage recess 2, and then fold the stopper plate 3 toward you. When you grab the handle 7 and pull it toward you, the handle 7 moves toward you along the dovetail groove 11 together with the slider 12 and stops at the end of the dovetail groove 12, so you can then flip the handle 7 upward. The handle 7 is locked in the upright position by pivoting upward and taking the upright position, and then pulling down the lock pawl 13 to engage the engagement recess I7 of the table 6.

Subsequently, by further pulling the handle 7, the entire cart is pulled out from the storage recess 2. At this time, since the auxiliary wheel 35 rolls on the upper surface of the storage recess 2, it can be pulled out smoothly. As the front and rear supporting legs 8 and 9 come off the rear end of the loading platform 2 as the truck is pulled out, the supporting legs 8 and 9 are moved together with the hollow shaft 18 and the solid shaft 22 by the biasing force of the torsion springs 21 and 25. rotated in the standing direction,
Each wheel 8a, 9a lands on the ground.

Further, the link 26 rotates downward in conjunction with the upright action of the supporting leg 9, and the lock rod 28 moves along the elongated hole 29.
When the support leg 9 is erected to the normal position, the lock rod 28
engages with the recess 29a of the elongated hole 29 to lock the rear support leg 9 in the upright position.

On the other hand, in relation to the rotation of the link 26, the slide rod 30
is slid forward via the small link 31, and the lock piece 33 at the tip thereof is inserted into and engaged with the notch 34 on the outer periphery of the hollow shaft 18 to lock the front support leg 8 in the upright position.

In this way, by pulling out the hand truck 5 from the storage recess 2 of the loading platform 1, the four front and rear support legs 8, 9, which had been folded up until then, can be automatically erected. The support legs 8.9 are set so that the top surface of the table 6 is at the same height as the top surface of the loading platform l when the support legs 8゜9 are standing up.
By setting the length of 9, it becomes possible to transfer the cargo to be transported from the loading platform 1 to the push cart 5 side without bending down, and if necessary, It is also possible to move the baggage onto the handcart 5 in advance before starting the bow.

On the other hand, when storing the handcart 5 in the storage recess 2 of the loading platform L, move the handcart 5 to the front of the storage recess 2 and then lift the rear side of the cart 5 slightly. will come out from the recess 29a of the elongated hole 29, so if you hold the lock release handle 26a in that state and operate the link 26 to rotate slightly upward, the small link 3
1, the slide rod 30 is moved rearward, and its lock piece 33 is removed from the notch 34 of the hollow shaft 18.

That is, the front and rear supporting legs 8 and 9 are unlocked.

When pushing the handcart 5 toward the storage recess 2 in this state, the support legs 8 and 9 will hit the rear end of the storage recess 2, so
If you force it further in that state, those supporting legs 8,
9 is pushed upward against the torsion springs 21 and 25. Thus, the truck 5 is accommodated in the storage recess 2 with the support legs 8 and 9 folded onto the lower surface of the platform 6. Note that, at this time, since the trolley 5 moves on the upper surface of the storage recess 2 via the auxiliary wheels 35, the push-in is performed smoothly. Thereafter, the handle 7 is unlocked by flipping up the lock claw 15 of the handle 7 and disengaging from the engagement recess 17 of the platform 6, and then the handle is moved forward together with the slider 12 and folded. In this way, the handcart 5 is stored in the storage recess 2 in the initial posture, and after that, by raising the stopper plate 3 and securing it with the clasp, the work of storing the handcart 5 is completed.

Next, another embodiment of the present invention will be described based on FIG. This embodiment is a modification of the locking mechanism for the supporting legs 8 and 9. A lock arm 36 is installed on the lower surface of the center of the front end of the table 6 of the handcart 5, and this lock arm 36 is attached to a bracket 37 on the lower surface of the table 6 with a pin 3.
The support leg 8 is a substantially inverted arm rotatably attached to the supporting leg 8 by inserting the pin portion 36a at the tip thereof into the lock hole 39, 40 formed in the hollow shaft 18 and the solid shaft 22, respectively. , 9 are locked.

That is, the lock arm 36 is biased in the locking direction by a suitable spring 41, and in the unlocked state, the pin portion 36a is in contact with the outer circumferential surface of the hollow shaft 18, but the lock arm 36 is pushed from the storage recess 2 of the handcart 5. When the supporting legs 8 and 9 are erected and the double-ended hook holes 39 and 40 are aligned when the support legs 8 and 9 are pulled out, the pin portion 36a is inserted into the double-ended hook holes 39 and 40 and automatically locked.

On the other hand, a dog 42 for unlocking is installed at the center of the rear end on the storage recess 2 side. This dog 42 is attached so that it can rotate around a pin 43, and is prevented from rotating forward by a stopper 44. In other words, when the dock 42 pushes the handcart 5 into the storage recess 2, the lock arm 3
The support leg 8.9 is unlocked by abutting the lower end of the support leg 8.9 and rotating the pin part 36a and removing it from the lock hole 37.38. It's like running away.

Note that the dog 42 is biased by a suitable spring 45 so that it is always held in the upright position.

Therefore, in other embodiments employing such a configuration, the supporting legs 8 and 9 are automatically locked and released, so that the above-mentioned manual release action is not required.
It has the advantage of being easier to handle.

Although the present invention has been illustrated and described with reference to preferred embodiments, various modifications can be made without departing from the spirit of the invention, and the present invention is not necessarily limited to what is shown here. .

(Effects of the Invention) As described in detail above, according to the present invention, by storing the handcart in a dedicated storage recess formed in the loading platform, the table of the cart when stored is a part of the loading platform. Therefore, the same loading space as before can be obtained regardless of the presence of a trolley. In addition, when using a hand cart to transport cargo, it is possible to transfer the cargo from the platform to the cart or from the cart to the platform in a comfortable posture, and when storing and using the hand cart, Since the supporting legs are automatically folded and pulled out, handling is extremely simple.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a perspective view of a hand truck, FIG. 2 being a perspective view of a vehicle equipped with a recess for storing the hand truck, and FIG. 3 showing the hand truck in a stored state. Figure 4 is a side view of the handcart pulled out from the storage recess, Figure 5 is a sectional view showing the handle attachment section and lock section, and Figure 6 is the support leg attachment section. 7 is a sectional view taken along the line ■--■ in FIG. 6, and FIG. 8 is a sectional view showing a locking mechanism for a support leg according to another embodiment of the present invention. ■...Cargo platform 5...Handle 21.25...Talk 26...Link 30...Slide rod 36...Lock armed 2...Storage recess 6...・Table 8.9... Support leg spring 28... Lock rod 33... Lock single decal Applicant Toyota Industries Corporation Representative Patent attorney Hidehiko Okada (3 others)

Claims (1)

[Claims] This hand cart is stored in a rectangular storage recess formed in the loading platform of a vehicle, and includes a table formed in the shape of a rectangular flat plate, and four supporting legs in the front and rear that are foldably attached to the underside of the table. , comprising a handle foldably attached to the front side of the table, means for always biasing each of the supporting legs in the standing direction, and means for locking the supporting legs in the standing position, and the supporting legs are in an unlocked state. The automobile retractable handcart is configured to be folded by pressing it against the rear end of the storage recess of the loading platform.