JPH0651471B2 - Folding trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a foldable trolley for carrying luggage, in particular, a pedestal can be folded in two, and handles before and after the pedestal can also be folded with respect to the pedestal. About the dolly.

[Conventional technology]

The conventional foldable carriage in which the base plate (base frame) and the handle are both foldable has a problem that the folding operation as a whole is quite troublesome and the operation cannot be performed smoothly.

[Problems to be solved by the invention]

The foldable carriage of the present invention is provided with a lock mechanism capable of reliably and automatically locking the handle to the base plate at any of the standing position and the fall position (folding position), and the mounting portion is fixed. By attaching auxiliary wheels, the handle and the base plate can be easily and smoothly folded.

[Means for solving problems]

In order to achieve the above object, the present invention is a pair of base plates, a connecting fitting for connecting the pair of base plates in a foldable manner,
A pair of quadrant brackets that are rotatably supported on both sides of the outer edge of each base plate and that have stopper grooves at two locations on the arcuate peripheral surface, and legs are respectively attached to the pair of brackets. A fixed gate-shaped handle, main wheels mounted on the bottom surface of each bracket, auxiliary wheels fixed to the outer edge of each base plate so as to be located inward of the main wheels, and each base plate A lock rod that is movably fitted to a pair of elongated holes provided on both sides of the base plate along the front-rear direction and is selectively engaged with one of two stopper grooves of the bracket, and the lock rod is a bracket. A lock spring that urges the pivot shaft in a direction toward the axial direction of the pivot shaft, and a trigger pedal that has a base end coupled to the central portion of the lock rod and a tip protruding from the outer end of each base plate. And

[Action]

In the folding carriage of the present invention, the handle and the base plate can be folded together from the use state shown in FIG. In the upright state of FIG. 5, each handle pushes the trigger pedal against the lock spring with its toes and moves the lock rod fixed to the trigger pedal along the long hole of the base plate to lock the lock rod. After the rod is removed from one of the stopper grooves of the bracket and then laid down on the base plate, the folded state when not in use is obtained. At this time, at the end of the fall of the handle, the lock rod that slides along the peripheral surface of the bracket automatically fits into the other stopper groove of the bracket due to the restoring force of the lock spring. Will be locked in.

Then, as shown in FIG. 6, when the handle which is laid down on the base plate is pulled up, the pair of base plates are bent at the connecting metal fittings, and the outer ends of the base plates are not oriented in the same direction. It is pulled by the rolling of auxiliary wheels that are grounded on the floor, regardless of the absence of the main wheels. The folded carts are either leaned against each other (Fig. 7) or laid sideways and stored.

In order to return the dolly to the use state, the reverse operation is performed according to the above, and the handle is automatically locked in the standing position.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 indicates a base plate, and the base plate 1 is composed of a first base plate 2 and a second base plate 3, both of which are folded by a connecting fitting 4. Connected as possible. The connecting fitting 4 is composed of a first hinge member 5 and a second hinge member 6, and is connected by a support shaft pin 7. A latch 8 is used to stably hold the usage state where the base plate 1 is deployed. As shown in FIGS. 2 and 3, the latch 8 is pivotally supported, for example, on the second hinge member 6 side. It is a plate-shaped member that is fitted in a locking hole 8a provided in the latch 8 on a locking pin 9 provided on the first hinge member 5 side.

Further, as shown in FIG. 4, the buffer rod 10 is guided to the joint edge portion of the first base plate 2 and the second base plate 3 so as to be movable in the longitudinal direction thereof. The buffer rod 10, which is provided, is housed in the guide frame 11 and is urged by the spring force of the buffer spring 12 as a compression coil spring so as to always project in the protruding direction. The buffer spring 1
One end of 2 is in contact with an engagement pin 13 protruding from the buffer rod.

Next, the main part of the present invention will be described. As shown in FIG. 1, FIG. 5 and FIG. 6, a total of four brackets 14, 14 are provided on both outer ends of the first base plate 2 and the second base plate 3.
14 are attached to be rotatable about a pivot 15 within a range of 90 degrees. The side shape of each bracket 14 is substantially a quadrant, and the arcuate circumferential surface 14a has a 2
Two stopper grooves 16 and 17 are formed. Further, on the lower surface of the bracket 14 in FIG.
The wheel receiver 18a of 8 is mounted so as to be rotatable about the vertical axis, and the base plates 2, 3 between the main wheels 18, 18 are mounted.
A pair of auxiliary wheels 19 and 19 are fixed to the outer end edge portion of the vehicle through, for example, a mounting plate having an L-shaped cross section. The rotation axis of the auxiliary wheel 19 is substantially parallel to the pivot 15 of the bracket 14.

On the other hand, leg portions of a gate-shaped handle 20 (see FIG. 8) are fixed to the pair of brackets 14 on both sides, respectively.

Further, locking means 21 is provided to regulate the standing position and the fall position of the handle 20. The lock means 21 has a lock rod 22 that engages with the stopper groove 16 or 17, and a trigger pedal 23 integrally connected to the central portion of the lock rod 22. In this locking means 21, as shown in FIG. 5, a lock rod 22 is installed in the lateral direction (width direction) of the base plate 1, and both ends thereof are elongated holes 24 opened along the front-back direction of the base plate 1. It is guided so as to be movable in the left-right direction in FIG. Biased in the direction.

To bring the folding cart of the present invention into use, as shown in FIG. 1, the two base plates 2 and 3 are unfolded, and the retaining holes 8a of the latch 8 are engaged with the pins 9. It was folded 2
When the two base plates 2 and 3 are deployed, the joint edge of the base plate 3 in FIG. 4 pushes the buffer rod 10 into the base plate 2,
At this time, since the buffer spring 12 is compressed and the energy is stored, the rapid expansion of the base plates 2 and 3 and the accompanying generation of noise are prevented. A plurality of the buffer rods 10 may be provided if necessary, or various conventionally known buffer devices can be adopted. Then, the handles 20, 20 on both sides are erected in the upright position, and the lock rod 22 is engaged with the one stopper groove 16 of the bracket 14. In this state, it can be used as a truck (see Fig. 1).

Next, the lock means 21 is used to fold the folding cart.
The trigger pedal 23 is pushed by, for example, the toes to release the engagement between the lock rod 22 and the one stopper groove 16, and the handle 20 is pushed down in the direction of arrow a in FIG. It is engaged with the stopper groove 17 by the elastic force shown in FIG. Next, as shown in FIG. 6, the latch 8 is removed and the tip of the handle 20 is pulled upward. Then, as shown in FIG. 7, the base plate 1 is bent in the middle and is pulled until the auxiliary wheels 19 and 19 come into contact with each other. At this time, the auxiliary wheels 19 and 19 fixed to the outer edge portions of the base plates 2 and 3 come into contact with the floor surface and roll with the rising of the tip of the handle 20, so that the main wheels 18 and 18 have any posture. Even in this case, the base plates 2 and 3 can be smoothly bent. The folding can be completed in this way.

〔The invention's effect〕

According to the foldable carriage of the present invention described above, in order to hold the handle at the upright position and the fall position with respect to the base plate, after the trigger pedal is displaced by the toe or the like and the lock rod is displaced, the handle is moved. If the handle is swung, the handle can be reliably and automatically locked, so that the raising and lowering operation of the handle can be performed very easily.

In addition, there is no risk that the locked state will be released when a force is applied to the handle when the dolly is used, and the laid state of the handle with respect to the base plate cannot be swung even when the dolly is not used. Since it is locked to, there is no need to worry about getting injured by putting your hand between the handle and the base plate when leaning or stacking the whole dolly.

Furthermore, when folding the pair of base plates or expanding the base plates into use, the auxiliary wheels provided on the outer edge of each base plate are used by pulling up or down the handle that has been laid down with respect to each base plate. Thus, there is also an advantage that the pair of base plates can be smoothly folded or unfolded.

[Brief description of drawings]

FIG. 1 is a side view showing the use state of the folding carriage of the present invention, FIG. 2 is an enlarged side view of a connecting portion of the carriage, FIG. 3 is an enlarged plan view thereof, and FIG. 4 is a buffer rod of the connecting portion. FIG. 5 is an enlarged vertical sectional side view showing an enlarged partial vertical side view, FIG. 5 is an enlarged vertical side view showing an essential part of the present invention, and FIG. 6 is a side view showing a state in which a handle is laid down and a dolly connecting portion is unlatched, Is a side view showing a folded state of the dolly, and FIG. 8 is a front view of the dolly in a used state. 1 ... Base plate, 14 ... Bracket, 14a ... Arc-shaped peripheral surface, 16, 17 ... Stopper groove, 18 ... Main wheel, 19
…… Auxiliary wheel, 20 …… Handle, 22 …… Lock rod,
24: long hole, 23: trigger pedal.

Claims (1)

[Claims] 1. A pair of base plates, a connecting metal fitting for connecting the pair of base plates to each other in a foldable manner, rotatably supported on both sides of an outer end of each base plate, and stoppers at two positions on an arcuate peripheral surface. Paired quadrant brackets with grooves, gate-shaped handles with legs fixed to these paired brackets, main wheels attached to the underside of each bracket, and Auxiliary wheels fixed to the outer edge of each base plate so as to be located inward, and movably fitted into a pair of long holes provided on both sides of each base plate along the front-back direction of the base plate, and a bracket. A lock rod selectively engaged with one of the two stopper grooves, a lock spring for biasing the lock rod in a direction toward the axis of the bracket pivot, and a base end coupled to the central portion of the lock rod. And a trigger pedal with the tip protruding from the outer end of each base plate. Folding trolley, characterized in that.