JPH08175392A - Dolly - Google Patents

Abstract

PURPOSE: To provide a dolly which is easily transported, can be stored in smaller space than usual, maintained with ease, permits steering of its wheels with conventional handle operation, and permits the angle of a projector to be varied following the steering of the wheels by the handle operation. CONSTITUTION: An expansion column 2 having a handle 7 secured thereto is removably placed upright on a truck 1. When the expansion column 2 is removed from the truck 1, the dolly is divided into two members, i.e., the truck 1 and the handle-equipped expansion column 2 so that the dolly is easily transported and that it can be stored in smaller space than usual and maintained with ease. The expansion column 2 mounted on the truck 1 is supported in such a way as to freely turn in the horizontal direction, and a link mechanism is linked to the column in such a way as to follow the rotation of the column, so that wheels 1a can be steered by a handle operation similar to conventional handle operation, and so that the angle of a projector 3 can be varied following the wheels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand-held type mobile trolley for steering wheels by operating a handle, and more particularly, to a telescopic vehicle equipped with an arbitrary equipment such as a floodlight and a speaker at its upper end. The present invention relates to a mobile trolley in which props are set up on a trolley.

[0002]

2. Description of the Related Art Conventionally, as this type of moving carriage, those shown in FIGS. 8 and 9 have been known. This moving dolly will be described as follows: dolly 100 with wheels 101 on the front and rear, and dolly 10
Telescopic column 103 with optional equipment (flooder in this example) 102 attached to the uppermost tube column standing at 0
And a handle 105 rotatably supported with respect to the carriage 100 for operating the link mechanism 104. The handle 105 is rotatably supported by the carriage 100 so that the link mechanism 104 can be operated. While steering, handle 105
Push the button to move the trolley 100 to the specified position,
The telescopic column 105 is arranged at a predetermined position.
The telescopic column 105 is a base tube column 103a fixed vertically to the trolley 100.
At least one (two in this case) middle tube columns 103b, 103c having successively smaller inner diameters are loosely fitted successively to the base tube column 103a so as to be vertically slidable, and the middle tube columns 103b, 103c are It has a well-known structure in which the pillars are stretched when they are used to adjust the height of the equipment 102 when they are used, and the pillars are contracted when they are not used.

[0003]

In the above-mentioned conventional mobile trolley, the telescopic support 103 is contracted so that it can be easily transported and stored. There is a drawback that it is troublesome to carry because it needs to be placed on a luggage carrier and fixed immovably. In addition, especially as shown in the figure, if the floodlight 102 is mainly used for road construction at night as shown in the figure, the number of units stored in warehouses etc. will decrease due to the fact that demand will decrease sharply during the off-season of construction. Is increasing, and there is a demand for more space-saving storage.

To meet such requirements, the trolley 100
The telescopic support 103 and the handle 105 can be removed with respect to the trolley 100, the telescopic support 103 and the handle when not in use.
It may be possible to transport ordinary cars (passenger cars) by separating each 105, and the storage space will be much smaller than before, but in this case, the following new Problems arise. That is, when the telescopic column 103 and the handle 105 are removed, it is divided into three members including the trolley 100, so that it takes time and effort to manage during storage. In order to solve such a trouble, fixing the handle 105 to the telescopic support 103 is conceivable.
Steering operation of 101 becomes impossible, and dolly is used when changing direction.
Several people would have to lift 100.

Further, as a peculiar problem in the case where the equipment is a floodlight, the floodlight 102 can be arbitrarily adjusted in its angle by a mounting bracket 107. Since the angle is not adjusted, it is necessary to manually change the angle of the projector 102 toward the traveling direction when steering the trolley 100 at the site of use, and there is room for improvement in that respect as well. was there.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is,
The telescopic support and the handle can be separated separately for easier transportation and more space-saving storage than before. Furthermore, the storage operation is easier and the steering wheel operation is also conventional. (EN) Provided is a movable carriage which can be operated by the same handle operation and can change the angle of the light projector in accordance with the steering operation of the carriage when the equipment is a projector. is there.

[0007]

In order to achieve the above-mentioned object, a movable carriage equipped with a telescopic strut according to the present invention is a bogie having wheels on the front and rear, a telescopic strut that is erected on the carriage, and a wheel. In a moving carriage equipped with a link mechanism provided on a carriage for steering the vehicle and a handle for operating the link mechanism, the telescopic support is detachably installed on the carriage and is horizontal when mounted on the carriage. It is characterized in that it is rotatably supported in a direction, a handle is attached to the telescopic column, and the link mechanism is linked so as to follow the rotation of the telescopic column by the handle operation.

[0008]

[Advantages] According to the above construction, since the telescopic support can be attached to and detached from the carriage and the handle is fixed to the telescopic support, if the telescopic support is removed from the cart, it is divided into two parts, the cart and the telescopic support with handle. As a result, the occupied space becomes very small, making packing and storage convenient. Furthermore, the telescopic columns are
Since it is supported rotatably in the horizontal direction when mounted on a trolley, and the link mechanism is linked so as to follow the rotation of the telescopic column, the telescopic column rotates with the turning operation of the handle and follows it. Then, the link mechanism is operated to steer the carriage.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a mobile carriage according to the present invention will be described below with reference to FIGS. In this embodiment, FIG.
As shown in FIG. 2, a floodlight 3 as a facility device is attached to the upper end of the telescopic column 2 that has been erected on the trolley 1 via a mounting bracket 4, and a power source for the floodlight 3 is generated. The usage pattern which comprises the movable type light-projecting device which mounts the machine 5 on the trolley | bogie 1 is shown.

The trolley 1 has a structure in which left and right wheels 1a, 1a are rotatably supported in the front and rear directions. A link mechanism 6 is provided on the lower surface side, and a front wheel 1a is operated by operating a handle 7 described later. , 1a. The link mechanism 6 rotatably supports the left and right front wheels 1a, 1a by means of pivots 6a, 6b, and a second link connected to one end of a first link rod 6c slidably mounted on the lower surface of the carriage 1. A wheel 1 in which the rod 6d is linked to the pivot 6a and is supported by the pivot 6a as the first link rod 6c moves forward and backward.
a is inclined in a predetermined direction (right side or left side), and following this, the wheels 1a supported by the pivot 6b are inclined in the same direction so that the third, fourth, fifth link rods 6e, 6 are formed.
It has a well-known structure in this technical field in which pivots 6a and 6b are linked to each other by f and 6g. Incidentally, in the present invention, the link mechanism 6 and the telescopic column 2, more specifically, the sixth link rod 6 connected to the other end of the first link rod 6c.
The gist is that the h and the base tube column 2a of the telescopic column 2 are closely related, which will be described in detail later.

The telescopic column 2 has a base tube column 2a standing upright at the rear of the upper surface of the bogie 1, and at least one middle tube column whose inner diameter is successively reduced with respect to the base tube column 2a. In the present embodiment, two middle tube columns 2b and 2c are successively fitted in a vertically slidable manner, and these middle tube columns 2b and 2c are slid up and down with each other by an arbitrary elevating means so that the projector 3 can be moved. The height is adjusted appropriately. The means for vertically sliding the middle tube columns 2b and 2c is an appropriate number of pulleys and wires and a winding machine as disclosed in JP-A-63-189577, JP-A-63-189578 and the like. It is well known that, in this embodiment, in addition to adopting these well-known configurations, a commercially available gas damper is incorporated in the base pipe column 2a to effectively utilize the repulsive force of the gas damper. It is also possible to adopt a structure in which the middle tube columns 2b and 2c are directly raised and lowered and the columns can be expanded and contracted by a light operation with one hand.

In the following, the telescopic column 2 which is the gist of the present invention is detachably installed on the carriage 1 and is supported rotatably in the horizontal direction in the mounted state on the carriage 1, and the link mechanism 6 is expanded and contracted. A configuration in which the support 2 is linked to follow the rotation of the support 2 will be described in detail with reference to FIGS. 3 to 7.

In the figure, reference numeral 10 denotes a receiving portion provided at a position corresponding to the rear portion of the upper surface of the truck 1. The receiving portion 10 has a receiving tube 12 fitted and inserted into a hole 11 opened in the upper surface of the truck 1. On the inner peripheral surface of the receiving cylinder 12, cylindrical bearings 13, 13 made of a plate material (so-called oilless metal) having a self-lubricating property are arranged vertically, and the pedestal 15 is rotatable by the receiving portion 10. Supported.

The pedestal 15 has a circular shape in plan view as shown in FIG. 7, and a shaft 16 integrally provided at the central portion thereof is fitted and inserted into the bearings 13, 13 of the receiving portion 10,
It is rotatably supported on the upper surface of the carriage 1. The shaft 16 has a lower end portion 16a projecting from the receiving cylinder 12 that has a diameter smaller than that of the shaft 16 and is cut out at a predetermined position on the outer circumference, and the lower end portion 16a is provided at the other end of the sixth link rod 6h described above. The sixth link rod 6h is rotated integrally with the sixth link rod 6h by being inserted into and engaged with the 6i, whereby the sixth link rod 6h is rotated integrally with the pedestal 15 to reciprocate the first link rod 6c. Become so.

On the pedestal 15, a pair of left and right hinges 20, 20 are fixed in parallel to the outer periphery of one half side (right side in FIG. 7) of the center line L, and the other half side (left side in FIG. 7). Opens the hole 21 into which the hook 33 provided in the base tube column 2a is inserted.

The hinge 20 has its base end side fixed to the outer periphery of the pedestal 15 by means such as welding and extends to the outside of the pedestal. The hinge shaft 31 provided on the base tube column 2a is provided at the tip end side in the extending direction. A groove 22 that is freely rotatably inserted is provided along the width direction of the hinge 20. Further, as shown in FIG. 5B, the groove 22 is recessed so that the lower end 22b is inclined toward the center line L side (in other words, toward the hole 21) with respect to the upper end opening 22a.

The hole 21 is opened in a rectangular shape in plan view as shown in the drawing, and a locking plate 23 with which the hook 33 is releasably engaged is provided at the peripheral edge of the substantially central portion in the longitudinal direction thereof. . Further, both ends 21a, 21a of the hole 21 are made slightly wider so that a protection plate 40 described later can be loosely inserted therein. Inside the hole 21, the power source side electrodes 24, 24 are provided at positions opposite to the floodlight side electrodes 36, 36 provided in the base tube column 2a.
It is attached integrally to.

On the other hand, at the lower end of the base tube column 2a of the telescopic column 2,
A substrate 30 having a substantially same plane circular shape as the pedestal 15 is fixed by means such as welding, and the substrate 30 is detachably attached to the upper surface of the pedestal 15. That is, a hinge shaft 31 rotatably loosely inserted in the grooves 22 and 22 is fixed to the outer periphery of one half side (right side in FIG. 6) of the substrate 30 with the center line L as a reference, and the other half side. On the left side (in FIG. 6), the spring 32 is attached to the locking plate 23 provided in the hole 21.
Equipped with a hook 33 that engages and disengages freely with the elastic force of, and after both end portions of the hinge shaft 31 are loosely inserted into the grooves 22 and 22, the hook 33 is engaged with the locking plate 23. The support column 2 is detachably installed on the trolley 1, and is supported rotatably in the horizontal direction in a mounted state on the trolley 1, and the link mechanism 6 is linked so as to follow the rotation of the telescopic support column 2. . Further, since the groove 22 is inclined toward the hole 21 as described above, the hinge shaft 31 is prevented from coming off the groove 22 in the mounted state of the telescopic column 2, and the mounted state is reliably maintained ( (See FIG. 3). At the same time, the hook 33 is moved backward (the base column 2a) against the elastic force of the spring 32.
Direction) to release the engagement between the hook 33 and the locking plate 23, and tilt the pillar 2 around the hinge shaft 31 as a fulcrum to bring the hook 3 into contact with the hook 3.
When the hinge shaft 31 is removed from the groove 22 after removing 3 from the hole 21, the telescopic support column 2 can be removed from the carriage 1.

The hinge shaft 31 is fixedly supported on the outside of the substrate 30 in a protruding manner via a connecting plate 31a. The upper end portion 33b of the hook 33 is rotatably supported by a bearing 34 projecting at a predetermined position on the peripheral wall of the base pipe column 2a, and the lower end portion 33b having a hook shape is connected to the hole 21 described above so as to communicate with the substrate 30. The hook 33 and the locking plate 23 are engaged with each other when the board 30 is mounted on the pedestal 15 by passing through the hole 35 opened in the other half side and projecting to the lower surface side of the board 30. become. On the peripheral wall of the base tube column 2a, the electrodes 24,
Electrodes 36, 36 on the projector side are supported and fixed at positions opposed to 24, and the lower end portions of the electrodes 36, 36 pass through the holes 35 and project to the lower surface side of the substrate 30. When mounted on the upper side, the electrodes 24, 24 on the power supply side and the electrodes 36, 36 on the floodlight side come into contact with each other so that they can be electrically connected (wired).

40, 40 are electrodes 36, 36 and hook 3
It is a protective plate for protecting the electrode 3, and is fixed to the lower surface of the substrate 30 so as to be located on the left and right sides of the electrodes 36, 36. The protective plates 40, 40 prevent the electrodes 36, 36 and the hook 33 from being directly contacted with the ground or the like and damaged when the telescopic column 2 is started up with the trolley 2 removed from the trolley 1. These protective plates 40
When the substrate 30 is mounted on the pedestal 15, it is loosely inserted into the wide portions 21a, 21a at both ends of the hole 21. In this example, the protection plates 40, 40 are fixed to the substrate 30 separately from the support columns 2, but they may be configured by partially extending the lower end edge of the base tube column 2a. Further, it is possible to save the labor for separately manufacturing and fixing the protective plate 40, and it can be expected to reduce the manufacturing cost.

Further, in the figure, reference numeral 41 is a knock pin fixed to the lower surface of the substrate 30, and reference numeral 42 is a knock hole into which the knock pin 41 is inserted, for preventing alignment and rattling when the substrate 30 is mounted on the pedestal 15. It is designed to work.

As described above, the moving carriage of the present embodiment steers the carriage 1 provided with the wheels 1a on the front and rear, the telescopic support 2 raised on the carriage 1 and the wheels 1a. A moving carriage provided with a link mechanism 6 provided on the carriage 1 and a handle 7 for operating the link mechanism 6,
A pedestal 15 is rotatably provided at an appropriate place on the upper surface of the
The rotation of the pedestal 15 links the lower surface of the pedestal 15 to the link mechanism 6 so that the link mechanism 6 is operated and the wheels 1a are steered.
The base plate 30 is mounted on the upper surface of the base plate 30. The base plate 30 is provided with the hinge shaft 31 on one end side and the hook 33 on the other end side, while the hinge shaft 31 is removably engaged with the pedestal 15. A hinge 20 is provided, and a locking plate 23 with which the hook 33 is detachably engaged is provided, and the substrate 30 is detachably installed on the pedestal 15. Further, the handle 7 is attached to the telescopic column 2. As a result, the telescopic column 2 is detachably installed on the trolley 1 and is supported rotatably in the horizontal direction in the mounted state on the trolley 1, and the link mechanism 6 is rotated by the handle. Since the configuration is such that they are linked so as to follow, the actions and effects described below are achieved.

That is, when the telescopic support column 2 is mounted on the carriage 1 (the state shown in FIGS. 1 to 4), the base tube column 2a is provided.
The substrate 30 at the lower end is integrally attached to the pedestal 15 by the engagement between the hinge 20 and the hinge shaft 31 and the engagement between the locking plate 22 and the hook 33. Therefore, the support column 2 is supported on the trolley 1 so as to be rotatable in the horizontal direction, and the pedestal 1 is also supported.
The link mechanism 6 is linked via 5 and the link mechanism 6 operates following the rotation of the telescopic column 2. Therefore,
The telescopic support column 2 rotates in accordance with the rotation operation of the handle 7, and the link mechanism 6 operates following the rotation of the handle 7 to steer the carriage 1, and at the same time, follows the steering operation of the carriage 1. The projector 3 comes to face the moving direction of the carriage 1. Further, in this state, the electrodes 36, 36 on the projector side and the electrodes 24, 24 on the power source side are in contact with each other in the hole 21 to be connected to each other, and the projector 3 generates power. The electric power of the machine 5 is surely supplied.

From the above state, the substrate 30 is pedestal 15 by a very simple operation (one-touch operation) of pushing the hook 33, tilting the support pillar 2 around the hinge shaft 31 as a fulcrum, and removing the hinge shaft 31 from the groove 22. At the same time, the electrodes 36, 36 and 24, 24 are separated from each other to separate the connection between the projector side and the power source side, and the telescopic column 2 is disengaged from the carriage 1 (see FIG. 5A). When the telescopic column 2 is removed from the trolley 1, it is divided into two parts, the trolley 1 and the telescopic column 2 with a handle, and the space occupied by the trolley as a whole is very small, which greatly improves the convenience of packing and storing. To do. The telescopic support column 2 removed from the trolley 1 is inserted into the groove 22 with the hinge shaft 31 in a tilted state at a predetermined angle, and then the support column 2 is raised with the hinge shaft 31 as a fulcrum to hold the hook 33 in the hole 21 of the pedestal 15. The knock pin 41 is inserted into the knock hole 42 and the hook 33 engages with the locking plate 23 by a very simple operation (one-touch operation) of inserting it into the carriage 1 again.

Further, when the equipment is the projector 3 as in this example, it is necessary to be able to contact and separate in the middle of the connection between the projector side and the power source side, and the contacting / separating means simply using a connector. In the case of adopting, the contact and separation work must be performed one by one when attaching and detaching the telescopic column 2, which reduces the advantage that the telescopic column 2 can be attached and detached with one touch as described above. However, as described above, the electrodes 24, 2 on the power source side are attached to the dolly 1 side (pedestal 15).
4, and the electrodes 36, 36 on the side of the projector are provided on the side of the telescopic support 2 (substrate 30), and the electrodes 24, 24, 36, 36
By adopting a configuration in which the power supply side and the floodlight side are connected by contacting each other freely, it is possible to attach and detach the telescopic column 2 with one-touch, without the need to attach or detach the telescopic column 2 one by one. The effect that can be done can be made more effective.

The expandable support column 2 is not limited to the three-stage structure as described above, and it is optional to use an expandable support column having a two-stage structure or four or more stages. Further, the usage form of the pillar is not limited to that shown in the figure, and a speaker and other equipment may be installed in place of the floodlight 3 and the structure of the carriage 1 may be changed within a known range. Is.

[0027]

As described above, the movable carriage of the present invention has the telescopic column detachably attached to the bogie and rotatably supported in the horizontal direction when the telescopic column is mounted on the cart. The handle is attached and the link mechanism is linked so as to follow the rotation of the telescopic column by the handle operation.Therefore, if the telescopic column is removed from the dolly, it is divided into two parts, the trolley and the telescopic column with the handle. , The exclusive space becomes small and packing and storage becomes very convenient. Therefore, it is possible to put it on the trunk of a passenger car, etc., and the convenience of transportation is greatly improved, and it becomes possible to store it in a smaller space than before,
Moreover, since the handle and the telescopic column are integrated, management during storage is easy. Furthermore, the steering of the wheels can be performed by the same steering wheel operation as in the past, and when the equipment attached to the upper end of the column is a floodlight, the floodlight will follow the steering operation of the trolley. Is oriented in the moving direction of the trolley, and it is very useful when applied to a mobile lighting device used at a construction site at night or the like.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a moving carriage according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged cross-sectional view of a main part of FIG.

FIG. 4 is a sectional view taken along line (X)-(X) of FIG.

5A is a cross-sectional view of the detached state of FIG. (B)
FIG. 3 is a partially enlarged view showing a hinge part.

FIG. 6 is a bottom view of the telescopic column.

FIG. 7 is a plan view of a pedestal.

FIG. 8 is a side view showing a conventional moving carriage.

9 is a plan view of FIG.

[Explanation of symbols]

 1: Bogie 1a: Bogie 2: Telescopic support 3: Floodlight 6: Link mechanism 7: Handle

Claims (1)

[Claims] 1. A trolley having front and rear wheels, a telescopic support erected on the trolley, a link mechanism provided on the trolley for steering the wheels, and a handle for operating the link mechanism. In a mobile trolley, the telescopic support is detachably attached to the trolley, and is supported rotatably in a horizontal direction when mounted on the trolley, a handle is attached to the telescopic support, and a link mechanism is telescopically operated by a handle. A mobile trolley characterized by being linked so as to follow the rotation of the columns.