JP3761279B2 - Buried pole - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a buried pole used for, for example, forming a parking stop of a parking lot or forming a partition on a floor surface of a factory or a warehouse.
[0002]
[Prior art]
Conventionally, this type of buried pole is described in Japanese Utility Model Publication No. 55-51868. In FIG. 6 showing the embedded pole, 61 is an outer cylinder embedded with the upper surface 62 representing the ground G, 63 is a cylindrical fitting fixedly fitted on the upper portion of the outer cylinder 61, and 64 is a cylindrical fitting 63. And a guide groove vertically provided in the diametrical direction in common with the inner surface of the outer cylinder 61, 65 is a hook groove continuously formed in a bowl shape at the upper end of the guide groove 64, and 66 is the cylindrical fitting 63 and the outer cylinder. It is an inner cylinder that is fitted from the upper part of 61 and fitted into the guide groove 64 so that both ends of a latching pin 67 inserted through the lower side surface in the diametrical direction can be moved up and down.
[0003]
Reference numeral 68 denotes a hole provided so as to communicate with the locking groove 65 from the upper surface 62 of the outer cylinder 61, and 69 denotes a stopper pin fitted in the hole 68 so as not to rotate and to be raised and lowered. The stopper pin 69 is screwed into a female screw hole 70 vertically perforated from the upper surface thereof, and a bolt 72 having a head 71 protruding from the upper surface 62 of the outer cylinder 61 is rotated. It is supposed to go up and down.
[0004]
In the buried pole configured as described above, the inner cylinder 66 is pulled up from the upper end of the outer cylinder 61, and the latch pin 67 integral with the inner cylinder 66 reaches the upper end of the guide groove 64 in the horizontal direction. When the cylinder 66 is rotated, the latch pin 67 moves into the latch groove 65, and the pulled-up state of the inner cylinder 66 is maintained via the latch pin 67 supported in the latch groove 65. . Next, the stopper pin 69, which has been previously lifted and retracted by rotating the bolt 72 in the slack direction, is lowered by rotating the bolt 72 in the reverse direction, and is located at the innermost part of the retaining groove 65. 67 is prevented from escaping, and the inner cylinder 66 cannot be rotated.
[0005]
[Problems to be solved by the invention]
However, the conventional buried pole has the following problems. That is, in order to extend the embedded pole in the retracted state to use it, it is necessary to pull up the inner tube 66 and rotate the inner tube 66 at that position, and the latch pin 67 is hooked during use. In order to prevent the inner cylinder 66 from being inadvertently lowered from the stop groove 65, it is necessary to lower the stopper pin 69 by turning the bolt 72, and the operation is complicated and troublesome. Therefore, for example, when a large number of embedded poles are arranged in parallel at a predetermined interval, a great deal of labor and time are required until all the poles are put into use. In the same manner, it takes a great deal of labor and time for the operation of retracting the buried pole in the used state to the retracted state.
[0006]
Further, since the structure is complicated and the number of parts is large, the manufacturing cost is high, and the latch pin 67 protrudes from the outer peripheral surface of the inner cylinder 66 in the diametrical direction. The diameter of the coil has to be considerably large, and there has also been a problem of taking up space when storing and transporting the buried pole for the thick outer cylinder 61.
[0007]
Further, when sand or the like entering between the inner cylinder 66 and the outer cylinder 61 from the upper end of the outer cylinder 61 is caught between the guide groove 64 or the retaining groove 65 and the retaining pin 67, There also arises a problem that the cylinder 66 cannot be lifted or rotated.
[0008]
The present invention has been made in view of the above problems, and can be expanded and contracted by an easy operation, can reliably hold the pulled-up state of the inner cylinder, and it becomes difficult to raise and lower the inner cylinder by biting sand or the like. In addition, it is an object of the present invention to provide an embedded pole that can minimize the difference in diameter between the inner cylinder and the outer cylinder.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises an outer cylinder embedded and fixed in a state where its upper end portion is exposed on a fixed surface, and one or a plurality of inner cylinders provided so as to be movable up and down in the outer cylinder. In the embedded pole, a locking member is provided in the vicinity of the lower end of the inner cylinder, the locking member is rotatably supported by a support shaft at a position eccentric from the center of gravity, and both end portions thereof are the inner cylinder. It is configured to rotate between a locking position projecting in a diametrical direction from the outer peripheral surface of the outer cylinder and being placed on the upper surface of the outer cylinder, and an accommodation position in which almost the whole is accommodated inside the inner cylinder. It is what.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embedded pole according to an embodiment of the present invention will be described with reference to FIGS.
In the drawing, an embedded pole generally indicated by reference numeral 1 is composed of an outer cylinder 2 and inner cylinders 3 and 4. The cylindrical outer cylinder 2 is embedded and fixed in the ground (fixed surface) G with its upper end exposed. The inner cylinder 3 is formed in a cylindrical shape having a smaller diameter than the outer cylinder 2 and is inserted into the outer cylinder 2 so as to be movable up and down. The inner cylinder 4 is formed in a cylindrical shape having a smaller diameter than the inner cylinder 3 and is inserted into the inner cylinder 3 so as to be movable up and down.
[0011]
A large-diameter portion 31 is formed at the lower end of the inner cylinder 3 to engage with the small-diameter portion 22 at the upper end of the outer cylinder 2 and prevent it from coming off (see FIGS. 3 to 5). Similarly, a large-diameter portion 41 is formed at the lower end of the inner cylinder 4 to engage with the small-diameter portion 32 at the upper end of the inner cylinder 3 and prevent it from coming off (see FIG. 5).
[0012]
In the vicinity of the lower end of the inner cylinder 3, a rectangular plate-like locking member 33 with rounded corners is supported by a support shaft 34 that extends in the diameter direction inside the inner cylinder 3. The locking member 33 rotates around the support shaft 34 at a position eccentric from the center of gravity C (see FIG. 3) so that one end side is long (ie, heavy) and the other end side is short (ie, light) with the support shaft 34 as a boundary. It is supported so as to be movable and not to move in the axial direction of the support shaft 34.
[0013]
Cutout holes 35 are formed on the left and right side surfaces of the inner cylinder 3 so as to face each other. The cutout hole 35 is formed in a groove shape that is slightly wider than the thickness of the locking member 33, and the end of the locking member 33 that extends longer is on the top as shown by the solid line in FIG. The passage of the locking member 33 is allowed only in the state. Further, the left and right cutout holes 35 are provided so that the locking member 33 does not impede the rotation of the lockup member 33 from the inside to the outside of the inner cylinder 3 by colliding with the side edge of the cutout hole 35. A pair of guide plates 35a are provided by connecting the side edges of each other (see FIGS. 2 and 3). Further, a groove 27 that is engaged with the locking member 33 and that prevents rotation is formed on the upper surface of the flange portion 26 formed at the upper end of the outer cylinder 2.
[0014]
Similarly to the case of the inner cylinder 3, a locking member 43 is supported on the support shaft 44 at a position deviated from the center of gravity in the vicinity of the lower end of the inner cylinder 4. A notch 45 for allowing the locking member 43 to pass therethrough is provided, and a guide plate (not shown) similar to the guide plate 35a is also provided. Further, a groove 37 that is engaged with the locking member 43 to prevent rotation is formed in the upper surface of the flange portion 36 formed at the upper end of the inner cylinder 3.
[0015]
An umbrella-shaped cap 48 is fixed to the upper end of the inner cylinder 4, and a handle 49 and a hook 50 for hooking a chain or a rope are fixed to the cap 48.
[0016]
When this buried pole 1 is installed outdoors, the lower end opening of the inner cylinder 3 is closed with a closing plate 3a as shown by a two-dot chain line in FIG. 3, and the lower end opening of the inner cylinder 4 is also a similar closing plate. If it is closed with (not shown), it is possible to prevent sand and the like from the cutout holes 35 and 45 from falling into the inside.
[0017]
In the embedded pole 1, in the retracted state shown in FIG. 5, the locking members 33, 43 are arranged in the inner cylinders 3, 4, respectively, with their long ends extending upward. In the storage position. Then, when the handle 49 is put on the handle 49 and the inner cylinders 4 and 3 are pulled up almost fully from this state, the locking member 33 is automatically rotated by gravity, as shown by a two-dot chain line in FIG. The end of the longer extending portion is in a state of projecting obliquely downward from the outer peripheral surface of the inner cylinder 3. Although not shown, similarly, the locking member 43 is also automatically rotated by gravity, and the end portion of the longer extension protrudes obliquely downward from the outer peripheral surface of the inner cylinder 4.
[0018]
When the inner cylinders 3 and 4 are slightly lowered from this state, the locking member 33 is locked at a position where both ends projecting in the diameter direction from the outer peripheral surface of the inner cylinder 3 are placed on the upper surface of the outer cylinder 2. Similarly, the locking member 43 is also rotated to a locking position where both ends protruding in the diametrical direction from the outer peripheral surface of the inner cylinder 4 are placed on the upper surface of the inner cylinder 3. Is in the use state shown in FIGS. Here, when the locking members 33 and 43 are not fitted in the grooves 27 and 37, the inner cylinders 3 and 4 are appropriately rotated if necessary so that the locking members 33 and 43 are moved into the grooves 27 and 37. To drop in.
[0019]
In order to change from the use state of FIG. 1 to the retracted state, first, when the inner cylinder 3 is slightly lifted, the locking member 33 is in the state shown by the two-dot chain line in FIG. The inner cylinder 3 is lowered to the lowest end while pushing it into the inner cylinder 3 by hand or foot, and then the inner cylinder 4 is pushed to the lowest end while pushing the locking member 43 into the inner cylinder 4 in the same manner as described above. Lower. As a result, the buried pole 1 is in the retracted state shown in FIG.
[0020]
As described above, according to the buried pole 1, when the buried pole 1 in the retracted state is extended and put into use, the inner cylinders 3, 4 can be simply moved up and down to be in the accommodation position. When the locking members 33 and 43 are automatically rotated to the locking position, and when the embedded pole 1 in use is contracted into the retracted state, the locking members 33 and 43 are moved to the inner cylinders 3 and 4. It is only necessary to lower the inner cylinders 3 and 4 while being pushed into the inside, and it is possible to extend and contract in a short time by an extremely simple operation.
[0021]
In use, both ends protrude from the outer peripheral surfaces of the inner cylinders 3 and 4 in the diametrical direction and are held by the locking members 33 and 34 mounted on the upper surfaces of the outer cylinder 2 and the inner cylinder 3, respectively. Therefore, the inner cylinders 3 and 4 are reliably held in the pulled-up state, and the inner cylinders 3 and 4 are not accidentally lowered during use.
[0022]
Further, since there are no irregularities such as a guide groove and a retaining groove as in the conventional example on the inner peripheral surface of the outer cylinder 2 and the inner cylinder 3, even when sand or the like enters the outer cylinder 2 or the inner cylinder 3, There is little risk that the inner cylinders 3 and 4 are difficult to be lifted by sand or the like.
[0023]
Further, the entire locking members 33 and 43 are accommodated inside the inner cylinders 3 and 4 at the storage position, and there is no protrusion protruding from the outer peripheral surface of the inner cylinders 3 and 4 like the latching pin in the conventional example. Therefore, the difference in diameter between the inner cylinders 3 and 4 and the outer cylinder 2 can be reduced, and the outer cylinder 2 can be made relatively thin. Accordingly, even when a large number of embedded poles 1 are stored or transported, a smaller space than that of the prior art is sufficient. Further, since the structure is simple and the number of parts is small compared to the buried pole of the conventional example, there is an advantage that the manufacturing cost can be reduced.
[0024]
Of course, the embedded pole of the present invention is not limited to the above description. For example, the above-described embedded pole has two inner cylinders having different diameters. It may be provided with only one inner cylinder as in the conventional example, or may be provided with three or more inner cylinders having different diameters.
[0025]
In the above description, the outer cylinder and the inner cylinder are formed in a cylindrical shape, but the outer cylinder and the inner cylinder may have, for example, an oval shape, an oval shape, or other cross-sectional shapes.
[0026]
In the above description, the locking member is formed in a substantially rectangular plate shape, but the shape of the locking member is arbitrary. For example, a wedge-shaped plate member or a round bar-shaped locking member may be used.
[0027]
Furthermore, the shape of details such as a cap, a handle, and a hook are not limited to the above, and are arbitrary.
[0028]
Furthermore, the fixing surface for fixing the outer cylinder may be other than the ground, such as a floor surface.
[0029]
【The invention's effect】
As described above, according to the buried pole according to the present invention, the locking member is rotatably supported by the support shaft at a position eccentric from the center of gravity, so that the buried pole in the retracted state is used. When the state is set, the locking member at the storage position is rotated to the locking position by gravity, and when the buried pole in the use state is set in the retracted state, the locking member is placed inside the inner cylinder. It is only necessary to lower the inner cylinder while pushing it in, and it can be expanded and contracted in a short time by an extremely simple operation. Further, in the state of use, the inner cylinder is held by the locking members that are diametrically protruded from the outer peripheral surface of the inner cylinder and placed on the upper surface of the outer cylinder. The holding is reliable and the inner cylinder does not fall inadvertently during use. In addition, since guide grooves and retaining grooves are not required on the inner peripheral surface of the outer cylinder, it is difficult to raise and lower the inner cylinder due to the biting of sand or the like even when sand or the like enters between the outer cylinder and the inner cylinder. The manufacturing cost can be reduced because the structure is simple and the risk is low. Furthermore, since almost the entire locking member is accommodated inside the inner cylinder at the storage position, the difference in diameter between the inner cylinder and the outer cylinder can be reduced, and the outer cylinder can be made relatively thin.
[Brief description of the drawings]
FIG. 1 is a front view of an embedded pole according to an embodiment of the present invention in use.
FIG. 2 is an enlarged side view of a main part of FIG.
3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view similar to FIG. 3 showing a turning state of the locking member.
FIG. 5 is a partially omitted cross-sectional view of the embedded pole in the retracted state.
FIG. 6 is a partially cutaway front view of a conventional buried pole.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Embedded pole 2 Outer cylinders 3, 4 Inner cylinders 33, 43 Locking members 34, 44 Support shaft G Ground (fixed surface)

Claims (1)

In an embedded pole composed of an outer cylinder that is embedded and fixed in a state where its upper end portion is exposed on a fixed surface, and one or a plurality of inner cylinders that are provided so as to be movable up and down in the outer cylinder,
A locking member is provided in the vicinity of the lower end of the inner cylinder, and the locking member is rotatably supported by a support shaft at a position eccentric from the center of gravity, and both end portions thereof have a diameter from the outer peripheral surface of the inner cylinder. It is configured to rotate between a locking position that protrudes in the direction and is placed on the upper surface of the outer cylinder, and an accommodation position in which almost the whole is accommodated inside the inner cylinder. An embedded pole.

Images